-- merged file : c:/data/develop/context/sources/luatex-fonts-merged.lua
-- parent file : c:/data/develop/context/sources/luatex-fonts.lua
-- merge date  : 2020-04-30 11:10
-- patched on 2020-05-06 (colr-restore fix

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['l-lua']={
 version=1.001,
 comment="companion to luat-lib.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
local next,type,tonumber=next,type,tonumber
LUAMAJORVERSION,LUAMINORVERSION=string.match(_VERSION,"^[^%d]+(%d+)%.(%d+).*$")
LUAMAJORVERSION=tonumber(LUAMAJORVERSION) or 5
LUAMINORVERSION=tonumber(LUAMINORVERSION) or 1
LUAVERSION=LUAMAJORVERSION+LUAMINORVERSION/10
if LUAVERSION<5.2 and jit then
 MINORVERSION=2
 LUAVERSION=5.2
end
if not lpeg then
 lpeg=require("lpeg")
end
if loadstring then
 local loadnormal=load
 function load(first,...)
  if type(first)=="string" then
   return loadstring(first,...)
  else
   return loadnormal(first,...)
  end
 end
else
 loadstring=load
end
if not ipairs then
 local function iterate(a,i)
  i=i+1
  local v=a[i]
  if v~=nil then
   return i,v 
  end
 end
 function ipairs(a)
  return iterate,a,0
 end
end
if not pairs then
 function pairs(t)
  return next,t 
 end
end
if not table.unpack then
 table.unpack=_G.unpack
elseif not unpack then
 _G.unpack=table.unpack
end
if not package.loaders then 
 package.loaders=package.searchers
end
local print,select,tostring=print,select,tostring
local inspectors={}
function setinspector(kind,inspector) 
 inspectors[kind]=inspector
end
function inspect(...) 
 for s=1,select("#",...) do
  local value=select(s,...)
  if value==nil then
   print("nil")
  else
   local done=false
   local kind=type(value)
   local inspector=inspectors[kind]
   if inspector then
    done=inspector(value)
    if done then
     break
    end
   end
   for kind,inspector in next,inspectors do
    done=inspector(value)
    if done then
     break
    end
   end
   if not done then
    print(tostring(value))
   end
  end
 end
end
local dummy=function() end
function optionalrequire(...)
 local ok,result=xpcall(require,dummy,...)
 if ok then
  return result
 end
end
if lua then
 lua.mask=load([[τεχ = 1]]) and "utf" or "ascii"
end
local flush=io.flush
if flush then
 local execute=os.execute if execute then function os.execute(...) flush() return execute(...) end end
 local exec=os.exec if exec then function os.exec   (...) flush() return exec   (...) end end
 local spawn=os.spawn   if spawn   then function os.spawn  (...) flush() return spawn  (...) end end
 local popen=io.popen   if popen   then function io.popen  (...) flush() return popen  (...) end end
end
FFISUPPORTED=type(ffi)=="table" and ffi.os~="" and ffi.arch~="" and ffi.load
if not FFISUPPORTED then
 local okay;okay,ffi=pcall(require,"ffi")
 FFISUPPORTED=type(ffi)=="table" and ffi.os~="" and ffi.arch~="" and ffi.load
end
if not FFISUPPORTED then
 ffi=nil
elseif not ffi.number then
 ffi.number=tonumber
end
if LUAVERSION>5.3 then
end
if status and os.setenv then
 os.setenv("engine",string.lower(status.luatex_engine or "unknown"))
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['l-lpeg']={
 version=1.001,
 comment="companion to luat-lib.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
lpeg=require("lpeg") 
local lpeg=lpeg
if not lpeg.print then function lpeg.print(...) print(lpeg.pcode(...)) end end
local type,next,tostring=type,next,tostring
local byte,char,gmatch,format=string.byte,string.char,string.gmatch,string.format
local floor=math.floor
local P,R,S,V,Ct,C,Cs,Cc,Cp,Cmt=lpeg.P,lpeg.R,lpeg.S,lpeg.V,lpeg.Ct,lpeg.C,lpeg.Cs,lpeg.Cc,lpeg.Cp,lpeg.Cmt
local lpegtype,lpegmatch,lpegprint=lpeg.type,lpeg.match,lpeg.print
if setinspector then
 setinspector("lpeg",function(v) if lpegtype(v) then lpegprint(v) return true end end)
end
lpeg.patterns=lpeg.patterns or {} 
local patterns=lpeg.patterns
local anything=P(1)
local endofstring=P(-1)
local alwaysmatched=P(true)
patterns.anything=anything
patterns.endofstring=endofstring
patterns.beginofstring=alwaysmatched
patterns.alwaysmatched=alwaysmatched
local sign=S('+-')
local zero=P('0')
local digit=R('09')
local digits=digit^1
local octdigit=R("07")
local octdigits=octdigit^1
local lowercase=R("az")
local uppercase=R("AZ")
local underscore=P("_")
local hexdigit=digit+lowercase+uppercase
local hexdigits=hexdigit^1
local cr,lf,crlf=P("\r"),P("\n"),P("\r\n")
local newline=P("\r")*(P("\n")+P(true))+P("\n")  
local escaped=P("\\")*anything
local squote=P("'")
local dquote=P('"')
local space=P(" ")
local period=P(".")
local comma=P(",")
local utfbom_32_be=P('\000\000\254\255') 
local utfbom_32_le=P('\255\254\000\000') 
local utfbom_16_be=P('\254\255')   
local utfbom_16_le=P('\255\254')   
local utfbom_8=P('\239\187\191')  
local utfbom=utfbom_32_be+utfbom_32_le+utfbom_16_be+utfbom_16_le+utfbom_8
local utftype=utfbom_32_be*Cc("utf-32-be")+utfbom_32_le*Cc("utf-32-le")+utfbom_16_be*Cc("utf-16-be")+utfbom_16_le*Cc("utf-16-le")+utfbom_8*Cc("utf-8")+alwaysmatched*Cc("utf-8") 
local utfstricttype=utfbom_32_be*Cc("utf-32-be")+utfbom_32_le*Cc("utf-32-le")+utfbom_16_be*Cc("utf-16-be")+utfbom_16_le*Cc("utf-16-le")+utfbom_8*Cc("utf-8")
local utfoffset=utfbom_32_be*Cc(4)+utfbom_32_le*Cc(4)+utfbom_16_be*Cc(2)+utfbom_16_le*Cc(2)+utfbom_8*Cc(3)+Cc(0)
local utf8next=R("\128\191")
patterns.utfbom_32_be=utfbom_32_be
patterns.utfbom_32_le=utfbom_32_le
patterns.utfbom_16_be=utfbom_16_be
patterns.utfbom_16_le=utfbom_16_le
patterns.utfbom_8=utfbom_8
patterns.utf_16_be_nl=P("\000\r\000\n")+P("\000\r")+P("\000\n") 
patterns.utf_16_le_nl=P("\r\000\n\000")+P("\r\000")+P("\n\000") 
patterns.utf_32_be_nl=P("\000\000\000\r\000\000\000\n")+P("\000\000\000\r")+P("\000\000\000\n")
patterns.utf_32_le_nl=P("\r\000\000\000\n\000\000\000")+P("\r\000\000\000")+P("\n\000\000\000")
patterns.utf8one=R("\000\127")
patterns.utf8two=R("\194\223")*utf8next
patterns.utf8three=R("\224\239")*utf8next*utf8next
patterns.utf8four=R("\240\244")*utf8next*utf8next*utf8next
patterns.utfbom=utfbom
patterns.utftype=utftype
patterns.utfstricttype=utfstricttype
patterns.utfoffset=utfoffset
local utf8char=patterns.utf8one+patterns.utf8two+patterns.utf8three+patterns.utf8four
local validutf8char=utf8char^0*endofstring*Cc(true)+Cc(false)
local utf8character=P(1)*R("\128\191")^0 
patterns.utf8=utf8char
patterns.utf8char=utf8char
patterns.utf8character=utf8character 
patterns.validutf8=validutf8char
patterns.validutf8char=validutf8char
local eol=S("\n\r")
local spacer=S(" \t\f\v")  
local whitespace=eol+spacer
local nonspacer=1-spacer
local nonwhitespace=1-whitespace
patterns.eol=eol
patterns.spacer=spacer
patterns.whitespace=whitespace
patterns.nonspacer=nonspacer
patterns.nonwhitespace=nonwhitespace
local stripper=spacer^0*C((spacer^0*nonspacer^1)^0)  
local fullstripper=whitespace^0*C((whitespace^0*nonwhitespace^1)^0)
local collapser=Cs(spacer^0/""*nonspacer^0*((spacer^0/" "*nonspacer^1)^0))
local nospacer=Cs((whitespace^1/""+nonwhitespace^1)^0)
local b_collapser=Cs(whitespace^0/""*(nonwhitespace^1+whitespace^1/" ")^0)
local e_collapser=Cs((whitespace^1*endofstring/""+nonwhitespace^1+whitespace^1/" ")^0)
local m_collapser=Cs((nonwhitespace^1+whitespace^1/" ")^0)
local b_stripper=Cs(spacer^0/""*(nonspacer^1+spacer^1/" ")^0)
local e_stripper=Cs((spacer^1*endofstring/""+nonspacer^1+spacer^1/" ")^0)
local m_stripper=Cs((nonspacer^1+spacer^1/" ")^0)
patterns.stripper=stripper
patterns.fullstripper=fullstripper
patterns.collapser=collapser
patterns.nospacer=nospacer
patterns.b_collapser=b_collapser
patterns.m_collapser=m_collapser
patterns.e_collapser=e_collapser
patterns.b_stripper=b_stripper
patterns.m_stripper=m_stripper
patterns.e_stripper=e_stripper
patterns.lowercase=lowercase
patterns.uppercase=uppercase
patterns.letter=patterns.lowercase+patterns.uppercase
patterns.space=space
patterns.tab=P("\t")
patterns.spaceortab=patterns.space+patterns.tab
patterns.newline=newline
patterns.emptyline=newline^1
patterns.equal=P("=")
patterns.comma=comma
patterns.commaspacer=comma*spacer^0
patterns.period=period
patterns.colon=P(":")
patterns.semicolon=P(";")
patterns.underscore=underscore
patterns.escaped=escaped
patterns.squote=squote
patterns.dquote=dquote
patterns.nosquote=(escaped+(1-squote))^0
patterns.nodquote=(escaped+(1-dquote))^0
patterns.unsingle=(squote/"")*patterns.nosquote*(squote/"") 
patterns.undouble=(dquote/"")*patterns.nodquote*(dquote/"") 
patterns.unquoted=patterns.undouble+patterns.unsingle 
patterns.unspacer=((patterns.spacer^1)/"")^0
patterns.singlequoted=squote*patterns.nosquote*squote
patterns.doublequoted=dquote*patterns.nodquote*dquote
patterns.quoted=patterns.doublequoted+patterns.singlequoted
patterns.digit=digit
patterns.digits=digits
patterns.octdigit=octdigit
patterns.octdigits=octdigits
patterns.hexdigit=hexdigit
patterns.hexdigits=hexdigits
patterns.sign=sign
patterns.cardinal=digits
patterns.integer=sign^-1*digits
patterns.unsigned=digit^0*period*digits
patterns.float=sign^-1*patterns.unsigned
patterns.cunsigned=digit^0*comma*digits
patterns.cpunsigned=digit^0*(period+comma)*digits
patterns.cfloat=sign^-1*patterns.cunsigned
patterns.cpfloat=sign^-1*patterns.cpunsigned
patterns.number=patterns.float+patterns.integer
patterns.cnumber=patterns.cfloat+patterns.integer
patterns.cpnumber=patterns.cpfloat+patterns.integer
patterns.oct=zero*octdigits 
patterns.octal=patterns.oct
patterns.HEX=zero*P("X")*(digit+uppercase)^1
patterns.hex=zero*P("x")*(digit+lowercase)^1
patterns.hexadecimal=zero*S("xX")*hexdigits
patterns.hexafloat=sign^-1*zero*S("xX")*(hexdigit^0*period*hexdigits+hexdigits*period*hexdigit^0+hexdigits)*(S("pP")*sign^-1*hexdigits)^-1
patterns.decafloat=sign^-1*(digit^0*period*digits+digits*period*digit^0+digits)*S("eE")*sign^-1*digits
patterns.propername=(uppercase+lowercase+underscore)*(uppercase+lowercase+underscore+digit)^0*endofstring
patterns.somecontent=(anything-newline-space)^1 
patterns.beginline=#(1-newline)
patterns.longtostring=Cs(whitespace^0/""*((patterns.quoted+nonwhitespace^1+whitespace^1/""*(endofstring+Cc(" ")))^0))
local function anywhere(pattern) 
 return (1-P(pattern))^0*P(pattern)
end
lpeg.anywhere=anywhere
function lpeg.instringchecker(p)
 p=anywhere(p)
 return function(str)
  return lpegmatch(p,str) and true or false
 end
end
function lpeg.splitter(pattern,action)
 if action then
  return (((1-P(pattern))^1)/action+1)^0
 else
  return (Cs((1-P(pattern))^1)+1)^0
 end
end
function lpeg.tsplitter(pattern,action)
 if action then
  return Ct((((1-P(pattern))^1)/action+1)^0)
 else
  return Ct((Cs((1-P(pattern))^1)+1)^0)
 end
end
local splitters_s,splitters_m,splitters_t={},{},{}
local function splitat(separator,single)
 local splitter=(single and splitters_s[separator]) or splitters_m[separator]
 if not splitter then
  separator=P(separator)
  local other=C((1-separator)^0)
  if single then
   local any=anything
   splitter=other*(separator*C(any^0)+"") 
   splitters_s[separator]=splitter
  else
   splitter=other*(separator*other)^0
   splitters_m[separator]=splitter
  end
 end
 return splitter
end
local function tsplitat(separator)
 local splitter=splitters_t[separator]
 if not splitter then
  splitter=Ct(splitat(separator))
  splitters_t[separator]=splitter
 end
 return splitter
end
lpeg.splitat=splitat
lpeg.tsplitat=tsplitat
function string.splitup(str,separator)
 if not separator then
  separator=","
 end
 return lpegmatch(splitters_m[separator] or splitat(separator),str)
end
local cache={}
function lpeg.split(separator,str)
 local c=cache[separator]
 if not c then
  c=tsplitat(separator)
  cache[separator]=c
 end
 return lpegmatch(c,str)
end
function string.split(str,separator)
 if separator then
  local c=cache[separator]
  if not c then
   c=tsplitat(separator)
   cache[separator]=c
  end
  return lpegmatch(c,str)
 else
  return { str }
 end
end
local spacing=patterns.spacer^0*newline 
local empty=spacing*Cc("")
local nonempty=Cs((1-spacing)^1)*spacing^-1
local content=(empty+nonempty)^1
patterns.textline=content
local linesplitter=tsplitat(newline)
patterns.linesplitter=linesplitter
function string.splitlines(str)
 return lpegmatch(linesplitter,str)
end
local cache={}
function lpeg.checkedsplit(separator,str)
 local c=cache[separator]
 if not c then
  separator=P(separator)
  local other=C((1-separator)^1)
  c=Ct(separator^0*other*(separator^1*other)^0)
  cache[separator]=c
 end
 return lpegmatch(c,str)
end
function string.checkedsplit(str,separator)
 local c=cache[separator]
 if not c then
  separator=P(separator)
  local other=C((1-separator)^1)
  c=Ct(separator^0*other*(separator^1*other)^0)
  cache[separator]=c
 end
 return lpegmatch(c,str)
end
local function f2(s) local c1,c2=byte(s,1,2) return   c1*64+c2-12416 end
local function f3(s) local c1,c2,c3=byte(s,1,3) return  (c1*64+c2)*64+c3-925824 end
local function f4(s) local c1,c2,c3,c4=byte(s,1,4) return ((c1*64+c2)*64+c3)*64+c4-63447168 end
local utf8byte=patterns.utf8one/byte+patterns.utf8two/f2+patterns.utf8three/f3+patterns.utf8four/f4
patterns.utf8byte=utf8byte
local cache={}
function lpeg.stripper(str)
 if type(str)=="string" then
  local s=cache[str]
  if not s then
   s=Cs(((S(str)^1)/""+1)^0)
   cache[str]=s
  end
  return s
 else
  return Cs(((str^1)/""+1)^0)
 end
end
local cache={}
function lpeg.keeper(str)
 if type(str)=="string" then
  local s=cache[str]
  if not s then
   s=Cs((((1-S(str))^1)/""+1)^0)
   cache[str]=s
  end
  return s
 else
  return Cs((((1-str)^1)/""+1)^0)
 end
end
function lpeg.frontstripper(str) 
 return (P(str)+P(true))*Cs(anything^0)
end
function lpeg.endstripper(str) 
 return Cs((1-P(str)*endofstring)^0)
end
function lpeg.replacer(one,two,makefunction,isutf) 
 local pattern
 local u=isutf and utf8char or 1
 if type(one)=="table" then
  local no=#one
  local p=P(false)
  if no==0 then
   for k,v in next,one do
    p=p+P(k)/v
   end
   pattern=Cs((p+u)^0)
  elseif no==1 then
   local o=one[1]
   one,two=P(o[1]),o[2]
   pattern=Cs((one/two+u)^0)
  else
   for i=1,no do
    local o=one[i]
    p=p+P(o[1])/o[2]
   end
   pattern=Cs((p+u)^0)
  end
 else
  pattern=Cs((P(one)/(two or "")+u)^0)
 end
 if makefunction then
  return function(str)
   return lpegmatch(pattern,str)
  end
 else
  return pattern
 end
end
function lpeg.finder(lst,makefunction,isutf) 
 local pattern
 if type(lst)=="table" then
  pattern=P(false)
  if #lst==0 then
   for k,v in next,lst do
    pattern=pattern+P(k) 
   end
  else
   for i=1,#lst do
    pattern=pattern+P(lst[i])
   end
  end
 else
  pattern=P(lst)
 end
 if isutf then
  pattern=((utf8char or 1)-pattern)^0*pattern
 else
  pattern=(1-pattern)^0*pattern
 end
 if makefunction then
  return function(str)
   return lpegmatch(pattern,str)
  end
 else
  return pattern
 end
end
local splitters_f,splitters_s={},{}
function lpeg.firstofsplit(separator) 
 local splitter=splitters_f[separator]
 if not splitter then
  local pattern=P(separator)
  splitter=C((1-pattern)^0)
  splitters_f[separator]=splitter
 end
 return splitter
end
function lpeg.secondofsplit(separator) 
 local splitter=splitters_s[separator]
 if not splitter then
  local pattern=P(separator)
  splitter=(1-pattern)^0*pattern*C(anything^0)
  splitters_s[separator]=splitter
 end
 return splitter
end
local splitters_s,splitters_p={},{}
function lpeg.beforesuffix(separator) 
 local splitter=splitters_s[separator]
 if not splitter then
  local pattern=P(separator)
  splitter=C((1-pattern)^0)*pattern*endofstring
  splitters_s[separator]=splitter
 end
 return splitter
end
function lpeg.afterprefix(separator) 
 local splitter=splitters_p[separator]
 if not splitter then
  local pattern=P(separator)
  splitter=pattern*C(anything^0)
  splitters_p[separator]=splitter
 end
 return splitter
end
function lpeg.balancer(left,right)
 left,right=P(left),P(right)
 return P { left*((1-left-right)+V(1))^0*right }
end
function lpeg.counter(pattern,action)
 local n=0
 local pattern=(P(pattern)/function() n=n+1 end+anything)^0
 if action then
  return function(str) n=0;lpegmatch(pattern,str);action(n) end
 else
  return function(str) n=0;lpegmatch(pattern,str);return n end
 end
end
function lpeg.is_lpeg(p)
 return p and lpegtype(p)=="pattern"
end
function lpeg.oneof(list,...) 
 if type(list)~="table" then
  list={ list,... }
 end
 local p=P(list[1])
 for l=2,#list do
  p=p+P(list[l])
 end
 return p
end
local sort=table.sort
local function copyindexed(old)
 local new={}
 for i=1,#old do
  new[i]=old
 end
 return new
end
local function sortedkeys(tab)
 local keys,s={},0
 for key,_ in next,tab do
  s=s+1
  keys[s]=key
 end
 sort(keys)
 return keys
end
function lpeg.append(list,pp,delayed,checked)
 local p=pp
 if #list>0 then
  local keys=copyindexed(list)
  sort(keys)
  for i=#keys,1,-1 do
   local k=keys[i]
   if p then
    p=P(k)+p
   else
    p=P(k)
   end
  end
 elseif delayed then 
  local keys=sortedkeys(list)
  if p then
   for i=1,#keys,1 do
    local k=keys[i]
    local v=list[k]
    p=P(k)/list+p
   end
  else
   for i=1,#keys do
    local k=keys[i]
    local v=list[k]
    if p then
     p=P(k)+p
    else
     p=P(k)
    end
   end
   if p then
    p=p/list
   end
  end
 elseif checked then
  local keys=sortedkeys(list)
  for i=1,#keys do
   local k=keys[i]
   local v=list[k]
   if p then
    if k==v then
     p=P(k)+p
    else
     p=P(k)/v+p
    end
   else
    if k==v then
     p=P(k)
    else
     p=P(k)/v
    end
   end
  end
 else
  local keys=sortedkeys(list)
  for i=1,#keys do
   local k=keys[i]
   local v=list[k]
   if p then
    p=P(k)/v+p
   else
    p=P(k)/v
   end
  end
 end
 return p
end
local p_false=P(false)
local p_true=P(true)
local lower=utf and utf.lower or string.lower
local upper=utf and utf.upper or string.upper
function lpeg.setutfcasers(l,u)
 lower=l or lower
 upper=u or upper
end
local function make1(t,rest)
 local p=p_false
 local keys=sortedkeys(t)
 for i=1,#keys do
  local k=keys[i]
  if k~="" then
   local v=t[k]
   if v==true then
    p=p+P(k)*p_true
   elseif v==false then
   else
    p=p+P(k)*make1(v,v[""])
   end
  end
 end
 if rest then
  p=p+p_true
 end
 return p
end
local function make2(t,rest) 
 local p=p_false
 local keys=sortedkeys(t)
 for i=1,#keys do
  local k=keys[i]
  if k~="" then
   local v=t[k]
   if v==true then
    p=p+(P(lower(k))+P(upper(k)))*p_true
   elseif v==false then
   else
    p=p+(P(lower(k))+P(upper(k)))*make2(v,v[""])
   end
  end
 end
 if rest then
  p=p+p_true
 end
 return p
end
local function utfchartabletopattern(list,insensitive) 
 local tree={}
 local n=#list
 if n==0 then
  for s in next,list do
   local t=tree
   local p,pk
   for c in gmatch(s,".") do
    if t==true then
     t={ [c]=true,[""]=true }
     p[pk]=t
     p=t
     t=false
    elseif t==false then
     t={ [c]=false }
     p[pk]=t
     p=t
     t=false
    else
     local tc=t[c]
     if not tc then
      tc=false
      t[c]=false
     end
     p=t
     t=tc
    end
    pk=c
   end
   if t==false then
    p[pk]=true
   elseif t==true then
   else
    t[""]=true
   end
  end
 else
  for i=1,n do
   local s=list[i]
   local t=tree
   local p,pk
   for c in gmatch(s,".") do
    if t==true then
     t={ [c]=true,[""]=true }
     p[pk]=t
     p=t
     t=false
    elseif t==false then
     t={ [c]=false }
     p[pk]=t
     p=t
     t=false
    else
     local tc=t[c]
     if not tc then
      tc=false
      t[c]=false
     end
     p=t
     t=tc
    end
    pk=c
   end
   if t==false then
    p[pk]=true
   elseif t==true then
   else
    t[""]=true
   end
  end
 end
 return (insensitive and make2 or make1)(tree)
end
lpeg.utfchartabletopattern=utfchartabletopattern
function lpeg.utfreplacer(list,insensitive)
 local pattern=Cs((utfchartabletopattern(list,insensitive)/list+utf8character)^0)
 return function(str)
  return lpegmatch(pattern,str) or str
 end
end
patterns.containseol=lpeg.finder(eol)
local function nextstep(n,step,result)
 local m=n%step   
 local d=floor(n/step) 
 if d>0 then
  local v=V(tostring(step))
  local s=result.start
  for i=1,d do
   if s then
    s=v*s
   else
    s=v
   end
  end
  result.start=s
 end
 if step>1 and result.start then
  local v=V(tostring(step/2))
  result[tostring(step)]=v*v
 end
 if step>0 then
  return nextstep(m,step/2,result)
 else
  return result
 end
end
function lpeg.times(pattern,n)
 return P(nextstep(n,2^16,{ "start",["1"]=pattern }))
end
do
 local trailingzeros=zero^0*-digit 
 local stripper=Cs((
  digits*(
   period*trailingzeros/""+period*(digit-trailingzeros)^1*(trailingzeros/"")
  )+1
 )^0)
 lpeg.patterns.stripzeros=stripper 
 local nonzero=digit-zero
 local trailingzeros=zero^1*endofstring
 local stripper=Cs((1-period)^0*(
  period*trailingzeros/""+period*(nonzero^1+(trailingzeros/"")+zero^1)^0+endofstring
 ))
 lpeg.patterns.stripzero=stripper
end
local byte_to_HEX={}
local byte_to_hex={}
local byte_to_dec={} 
local hex_to_byte={}
for i=0,255 do
 local H=format("%02X",i)
 local h=format("%02x",i)
 local d=format("%03i",i)
 local c=char(i)
 byte_to_HEX[c]=H
 byte_to_hex[c]=h
 byte_to_dec[c]=d
 hex_to_byte[h]=c
 hex_to_byte[H]=c
end
local hextobyte=P(2)/hex_to_byte
local bytetoHEX=P(1)/byte_to_HEX
local bytetohex=P(1)/byte_to_hex
local bytetodec=P(1)/byte_to_dec
local hextobytes=Cs(hextobyte^0)
local bytestoHEX=Cs(bytetoHEX^0)
local bytestohex=Cs(bytetohex^0)
local bytestodec=Cs(bytetodec^0)
patterns.hextobyte=hextobyte
patterns.bytetoHEX=bytetoHEX
patterns.bytetohex=bytetohex
patterns.bytetodec=bytetodec
patterns.hextobytes=hextobytes
patterns.bytestoHEX=bytestoHEX
patterns.bytestohex=bytestohex
patterns.bytestodec=bytestodec
function string.toHEX(s)
 if not s or s=="" then
  return s
 else
  return lpegmatch(bytestoHEX,s)
 end
end
function string.tohex(s)
 if not s or s=="" then
  return s
 else
  return lpegmatch(bytestohex,s)
 end
end
function string.todec(s)
 if not s or s=="" then
  return s
 else
  return lpegmatch(bytestodec,s)
 end
end
function string.tobytes(s)
 if not s or s=="" then
  return s
 else
  return lpegmatch(hextobytes,s)
 end
end
local patterns={} 
local function containsws(what)
 local p=patterns[what]
 if not p then
  local p1=P(what)*(whitespace+endofstring)*Cc(true)
  local p2=whitespace*P(p1)
  p=P(p1)+P(1-p2)^0*p2+Cc(false)
  patterns[what]=p
 end
 return p
end
lpeg.containsws=containsws
function string.containsws(str,what)
 return lpegmatch(patterns[what] or containsws(what),str)
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['l-functions']={
 version=1.001,
 comment="companion to luat-lib.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
functions=functions or {}
function functions.dummy() end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['l-string']={
 version=1.001,
 comment="companion to luat-lib.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
local string=string
local sub,gmatch,format,char,byte,rep,lower=string.sub,string.gmatch,string.format,string.char,string.byte,string.rep,string.lower
local lpegmatch,patterns=lpeg.match,lpeg.patterns
local P,S,C,Ct,Cc,Cs=lpeg.P,lpeg.S,lpeg.C,lpeg.Ct,lpeg.Cc,lpeg.Cs
local unquoted=patterns.squote*C(patterns.nosquote)*patterns.squote+patterns.dquote*C(patterns.nodquote)*patterns.dquote
function string.unquoted(str)
 return lpegmatch(unquoted,str) or str
end
function string.quoted(str)
 return format("%q",str) 
end
function string.count(str,pattern) 
 local n=0
 for _ in gmatch(str,pattern) do 
  n=n+1
 end
 return n
end
function string.limit(str,n,sentinel) 
 if #str>n then
  sentinel=sentinel or "..."
  return sub(str,1,(n-#sentinel))..sentinel
 else
  return str
 end
end
local stripper=patterns.stripper
local fullstripper=patterns.fullstripper
local collapser=patterns.collapser
local nospacer=patterns.nospacer
local longtostring=patterns.longtostring
function string.strip(str)
 return str and lpegmatch(stripper,str) or ""
end
function string.fullstrip(str)
 return str and lpegmatch(fullstripper,str) or ""
end
function string.collapsespaces(str)
 return str and lpegmatch(collapser,str) or ""
end
function string.nospaces(str)
 return str and lpegmatch(nospacer,str) or ""
end
function string.longtostring(str)
 return str and lpegmatch(longtostring,str) or ""
end
local pattern=P(" ")^0*P(-1)
function string.is_empty(str)
 if not str or str=="" then
  return true
 else
  return lpegmatch(pattern,str) and true or false
 end
end
local anything=patterns.anything
local moreescapes=Cc("%")*S(".-+%?()[]*$^{}")
local allescapes=Cc("%")*S(".-+%?()[]*")   
local someescapes=Cc("%")*S(".-+%()[]")  
local matchescapes=Cc(".")*S("*?")     
local pattern_m=Cs ((moreescapes+anything )^0 )
local pattern_a=Cs ((allescapes+anything )^0 )
local pattern_b=Cs ((someescapes+matchescapes+anything )^0 )
local pattern_c=Cs (Cc("^")*(someescapes+matchescapes+anything )^0*Cc("$") )
function string.escapedpattern(str,simple)
 return lpegmatch(simple and pattern_b or pattern_a,str)
end
function string.topattern(str,lowercase,strict)
 if str=="" or type(str)~="string" then
  return ".*"
 elseif strict=="all" then
  str=lpegmatch(pattern_m,str)
 elseif strict then
  str=lpegmatch(pattern_c,str)
 else
  str=lpegmatch(pattern_b,str)
 end
 if lowercase then
  return lower(str)
 else
  return str
 end
end
function string.valid(str,default)
 return (type(str)=="string" and str~="" and str) or default or nil
end
string.itself=function(s) return s end
local pattern_c=Ct(C(1)^0) 
local pattern_b=Ct((C(1)/byte)^0)
function string.totable(str,bytes)
 return lpegmatch(bytes and pattern_b or pattern_c,str)
end
local replacer=lpeg.replacer("@","%%") 
function string.tformat(fmt,...)
 return format(lpegmatch(replacer,fmt),...)
end
string.quote=string.quoted
string.unquote=string.unquoted
if not string.bytetable then 
 local limit=5000 
 function string.bytetable(str) 
  local n=#str
  if n>limit then
   local t={ byte(str,1,limit) }
   for i=limit+1,n do
    t[i]=byte(str,i)
   end
   return t
  else
   return { byte(str,1,n) }
  end
 end
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['l-table']={
 version=1.001,
 comment="companion to luat-lib.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
local type,next,tostring,tonumber,select,rawget=type,next,tostring,tonumber,select,rawget
local table,string=table,string
local concat,sort=table.concat,table.sort
local format,lower,dump=string.format,string.lower,string.dump
local getmetatable,setmetatable=getmetatable,setmetatable
local lpegmatch,patterns=lpeg.match,lpeg.patterns
local floor=math.floor
local stripper=patterns.stripper
function table.getn(t)
 return t and #t 
end
function table.strip(tab)
 local lst={}
 local l=0
 for i=1,#tab do
  local s=lpegmatch(stripper,tab[i]) or ""
  if s=="" then
  else
   l=l+1
   lst[l]=s
  end
 end
 return lst
end
function table.keys(t)
 if t then
  local keys={}
  local k=0
  for key in next,t do
   k=k+1
   keys[k]=key
  end
  return keys
 else
  return {}
 end
end
local function compare(a,b)
 local ta=type(a) 
 if ta=="number" then
  local tb=type(b) 
  if ta==tb then
   return a<b
  elseif tb=="string" then
   return tostring(a)<b
  end
 elseif ta=="string" then
  local tb=type(b) 
  if ta==tb then
   return a<b
  else
   return a<tostring(b)
  end
 end
 return tostring(a)<tostring(b) 
end
local function sortedkeys(tab)
 if tab then
  local srt={}
  local category=0 
  local s=0
  for key in next,tab do
   s=s+1
   srt[s]=key
   if category~=3 then
    local tkey=type(key)
    if category==1 then
     if tkey~="string" then
      category=3
     end
    elseif category==2 then
     if tkey~="number" then
      category=3
     end
    else
     if tkey=="string" then
      category=1
     elseif tkey=="number" then
      category=2
     else
      category=3
     end
    end
   end
  end
  if s<2 then
  elseif category==3 then
   sort(srt,compare)
  else
   sort(srt)
  end
  return srt
 else
  return {}
 end
end
local function sortedhashonly(tab)
 if tab then
  local srt={}
  local s=0
  for key in next,tab do
   if type(key)=="string" then
    s=s+1
    srt[s]=key
   end
  end
  if s>1 then
   sort(srt)
  end
  return srt
 else
  return {}
 end
end
local function sortedindexonly(tab)
 if tab then
  local srt={}
  local s=0
  for key in next,tab do
   if type(key)=="number" then
    s=s+1
    srt[s]=key
   end
  end
  if s>1 then
   sort(srt)
  end
  return srt
 else
  return {}
 end
end
local function sortedhashkeys(tab,cmp) 
 if tab then
  local srt={}
  local s=0
  for key in next,tab do
   if key then
    s=s+1
    srt[s]=key
   end
  end
  if s>1 then
   sort(srt,cmp)
  end
  return srt
 else
  return {}
 end
end
function table.allkeys(t)
 local keys={}
 for k,v in next,t do
  for k in next,v do
   keys[k]=true
  end
 end
 return sortedkeys(keys)
end
table.sortedkeys=sortedkeys
table.sortedhashonly=sortedhashonly
table.sortedindexonly=sortedindexonly
table.sortedhashkeys=sortedhashkeys
local function nothing() end
local function sortedhash(t,cmp)
 if t then
  local s
  if cmp then
   s=sortedhashkeys(t,function(a,b) return cmp(t,a,b) end)
  else
   s=sortedkeys(t) 
  end
  local m=#s
  if m==1 then
   return next,t
  elseif m>0 then
   local n=0
   return function()
    if n<m then
     n=n+1
     local k=s[n]
     return k,t[k]
    end
   end
  end
 end
 return nothing
end
table.sortedhash=sortedhash
table.sortedpairs=sortedhash 
function table.append(t,list)
 local n=#t
 for i=1,#list do
  n=n+1
  t[n]=list[i]
 end
 return t
end
function table.prepend(t,list)
 local nl=#list
 local nt=nl+#t
 for i=#t,1,-1 do
  t[nt]=t[i]
  nt=nt-1
 end
 for i=1,#list do
  t[i]=list[i]
 end
 return t
end
function table.merge(t,...) 
 if not t then
  t={}
 end
 for i=1,select("#",...) do
  for k,v in next,(select(i,...)) do
   t[k]=v
  end
 end
 return t
end
function table.merged(...)
 local t={}
 for i=1,select("#",...) do
  for k,v in next,(select(i,...)) do
   t[k]=v
  end
 end
 return t
end
function table.imerge(t,...)
 local nt=#t
 for i=1,select("#",...) do
  local nst=select(i,...)
  for j=1,#nst do
   nt=nt+1
   t[nt]=nst[j]
  end
 end
 return t
end
function table.imerged(...)
 local tmp={}
 local ntmp=0
 for i=1,select("#",...) do
  local nst=select(i,...)
  for j=1,#nst do
   ntmp=ntmp+1
   tmp[ntmp]=nst[j]
  end
 end
 return tmp
end
local function fastcopy(old,metatabletoo) 
 if old then
  local new={}
  for k,v in next,old do
   if type(v)=="table" then
    new[k]=fastcopy(v,metatabletoo) 
   else
    new[k]=v
   end
  end
  if metatabletoo then
   local mt=getmetatable(old)
   if mt then
    setmetatable(new,mt)
   end
  end
  return new
 else
  return {}
 end
end
local function copy(t,tables) 
 if not tables then
  tables={}
 end
 local tcopy={}
 if not tables[t] then
  tables[t]=tcopy
 end
 for i,v in next,t do 
  if type(i)=="table" then
   if tables[i] then
    i=tables[i]
   else
    i=copy(i,tables)
   end
  end
  if type(v)~="table" then
   tcopy[i]=v
  elseif tables[v] then
   tcopy[i]=tables[v]
  else
   tcopy[i]=copy(v,tables)
  end
 end
 local mt=getmetatable(t)
 if mt then
  setmetatable(tcopy,mt)
 end
 return tcopy
end
table.fastcopy=fastcopy
table.copy=copy
function table.derive(parent) 
 local child={}
 if parent then
  setmetatable(child,{ __index=parent })
 end
 return child
end
function table.tohash(t,value)
 local h={}
 if t then
  if value==nil then value=true end
  for _,v in next,t do
   h[v]=value
  end
 end
 return h
end
function table.fromhash(t)
 local hsh={}
 local h=0
 for k,v in next,t do
  if v then
   h=h+1
   hsh[h]=k
  end
 end
 return hsh
end
local noquotes,hexify,handle,compact,inline,functions,metacheck,accurate
local reserved=table.tohash { 
 'and','break','do','else','elseif','end','false','for','function','if',
 'in','local','nil','not','or','repeat','return','then','true','until','while',
 'NaN','goto','const',
}
local function is_simple_table(t,hexify,accurate) 
 local nt=#t
 if nt>0 then
  local n=0
  for _,v in next,t do
   n=n+1
   if type(v)=="table" then
    return nil
   end
  end
  local haszero=rawget(t,0) 
  if n==nt then
   local tt={}
   for i=1,nt do
    local v=t[i]
    local tv=type(v)
    if tv=="number" then
     if hexify then
      tt[i]=format("0x%X",v)
     elseif accurate then
      tt[i]=format("%q",v)
     else
      tt[i]=v 
     end
    elseif tv=="string" then
     tt[i]=format("%q",v) 
    elseif tv=="boolean" then
     tt[i]=v and "true" or "false"
    else
     return nil
    end
   end
   return tt
  elseif haszero and (n==nt+1) then
   local tt={}
   for i=0,nt do
    local v=t[i]
    local tv=type(v)
    if tv=="number" then
     if hexify then
      tt[i+1]=format("0x%X",v)
     elseif accurate then
      tt[i+1]=format("%q",v)
     else
      tt[i+1]=v 
     end
    elseif tv=="string" then
     tt[i+1]=format("%q",v) 
    elseif tv=="boolean" then
     tt[i+1]=v and "true" or "false"
    else
     return nil
    end
   end
   tt[1]="[0] = "..tt[1]
   return tt
  end
 end
 return nil
end
table.is_simple_table=is_simple_table
local propername=patterns.propername 
local function dummy() end
local function do_serialize(root,name,depth,level,indexed)
 if level>0 then
  depth=depth.." "
  if indexed then
   handle(format("%s{",depth))
  else
   local tn=type(name)
   if tn=="number" then
    if hexify then
     handle(format("%s[0x%X]={",depth,name))
    else
     handle(format("%s[%s]={",depth,name))
    end
   elseif tn=="string" then
    if noquotes and not reserved[name] and lpegmatch(propername,name) then
     handle(format("%s%s={",depth,name))
    else
     handle(format("%s[%q]={",depth,name))
    end
   elseif tn=="boolean" then
    handle(format("%s[%s]={",depth,name and "true" or "false"))
   else
    handle(format("%s{",depth))
   end
  end
 end
 if root and next(root)~=nil then
  local first=nil
  local last=0
  if compact then
   last=#root
   for k=1,last do
    if rawget(root,k)==nil then
     last=k-1
     break
    end
   end
   if last>0 then
    first=1
   end
  end
  local sk=sortedkeys(root)
  for i=1,#sk do
   local k=sk[i]
   local v=root[k]
   local tv=type(v)
   local tk=type(k)
   if compact and first and tk=="number" and k>=first and k<=last then
    if tv=="number" then
     if hexify then
      handle(format("%s 0x%X,",depth,v))
     elseif accurate then
      handle(format("%s %q,",depth,v))
     else
      handle(format("%s %s,",depth,v)) 
     end
    elseif tv=="string" then
     handle(format("%s %q,",depth,v))
    elseif tv=="table" then
     if next(v)==nil then
      handle(format("%s {},",depth))
     elseif inline then 
      local st=is_simple_table(v,hexify,accurate)
      if st then
       handle(format("%s { %s },",depth,concat(st,", ")))
      else
       do_serialize(v,k,depth,level+1,true)
      end
     else
      do_serialize(v,k,depth,level+1,true)
     end
    elseif tv=="boolean" then
     handle(format("%s %s,",depth,v and "true" or "false"))
    elseif tv=="function" then
     if functions then
      handle(format('%s load(%q),',depth,dump(v))) 
     else
      handle(format('%s "function",',depth))
     end
    else
     handle(format("%s %q,",depth,tostring(v)))
    end
   elseif k=="__p__" then 
    if false then
     handle(format("%s __p__=nil,",depth))
    end
   elseif tv=="number" then
    if tk=="number" then
     if hexify then
      handle(format("%s [0x%X]=0x%X,",depth,k,v))
     elseif accurate then
      handle(format("%s [%s]=%q,",depth,k,v))
     else
      handle(format("%s [%s]=%s,",depth,k,v)) 
     end
    elseif tk=="boolean" then
     if hexify then
      handle(format("%s [%s]=0x%X,",depth,k and "true" or "false",v))
     elseif accurate then
      handle(format("%s [%s]=%q,",depth,k and "true" or "false",v))
     else
      handle(format("%s [%s]=%s,",depth,k and "true" or "false",v)) 
     end
    elseif tk~="string" then
    elseif noquotes and not reserved[k] and lpegmatch(propername,k) then
     if hexify then
      handle(format("%s %s=0x%X,",depth,k,v))
     elseif accurate then
      handle(format("%s %s=%q,",depth,k,v))
     else
      handle(format("%s %s=%s,",depth,k,v)) 
     end
    else
     if hexify then
      handle(format("%s [%q]=0x%X,",depth,k,v))
     elseif accurate then
      handle(format("%s [%q]=%q,",depth,k,v))
     else
      handle(format("%s [%q]=%s,",depth,k,v)) 
     end
    end
   elseif tv=="string" then
    if tk=="number" then
     if hexify then
      handle(format("%s [0x%X]=%q,",depth,k,v))
     elseif accurate then
      handle(format("%s [%q]=%q,",depth,k,v))
     else
      handle(format("%s [%s]=%q,",depth,k,v))
     end
    elseif tk=="boolean" then
     handle(format("%s [%s]=%q,",depth,k and "true" or "false",v))
    elseif tk~="string" then
    elseif noquotes and not reserved[k] and lpegmatch(propername,k) then
     handle(format("%s %s=%q,",depth,k,v))
    else
     handle(format("%s [%q]=%q,",depth,k,v))
    end
   elseif tv=="table" then
    if next(v)==nil then
     if tk=="number" then
      if hexify then
       handle(format("%s [0x%X]={},",depth,k))
      elseif accurate then
       handle(format("%s [%q]={},",depth,k))
      else
       handle(format("%s [%s]={},",depth,k))
      end
     elseif tk=="boolean" then
      handle(format("%s [%s]={},",depth,k and "true" or "false"))
     elseif tk~="string" then
     elseif noquotes and not reserved[k] and lpegmatch(propername,k) then
      handle(format("%s %s={},",depth,k))
     else
      handle(format("%s [%q]={},",depth,k))
     end
    elseif inline then
     local st=is_simple_table(v,hexify,accurate)
     if st then
      if tk=="number" then
       if hexify then
        handle(format("%s [0x%X]={ %s },",depth,k,concat(st,", ")))
       elseif accurate then
        handle(format("%s [%q]={ %s },",depth,k,concat(st,", ")))
       else
        handle(format("%s [%s]={ %s },",depth,k,concat(st,", ")))
       end
      elseif tk=="boolean" then
       handle(format("%s [%s]={ %s },",depth,k and "true" or "false",concat(st,", ")))
      elseif tk~="string" then
      elseif noquotes and not reserved[k] and lpegmatch(propername,k) then
       handle(format("%s %s={ %s },",depth,k,concat(st,", ")))
      else
       handle(format("%s [%q]={ %s },",depth,k,concat(st,", ")))
      end
     else
      do_serialize(v,k,depth,level+1)
     end
    else
     do_serialize(v,k,depth,level+1)
    end
   elseif tv=="boolean" then
    if tk=="number" then
     if hexify then
      handle(format("%s [0x%X]=%s,",depth,k,v and "true" or "false"))
     elseif accurate then
      handle(format("%s [%q]=%s,",depth,k,v and "true" or "false"))
     else
      handle(format("%s [%s]=%s,",depth,k,v and "true" or "false"))
     end
    elseif tk=="boolean" then
     handle(format("%s [%s]=%s,",depth,tostring(k),v and "true" or "false"))
    elseif tk~="string" then
    elseif noquotes and not reserved[k] and lpegmatch(propername,k) then
     handle(format("%s %s=%s,",depth,k,v and "true" or "false"))
    else
     handle(format("%s [%q]=%s,",depth,k,v and "true" or "false"))
    end
   elseif tv=="function" then
    if functions then
     local getinfo=debug and debug.getinfo
     if getinfo then
      local f=getinfo(v).what=="C" and dump(dummy) or dump(v)
      if tk=="number" then
       if hexify then
        handle(format("%s [0x%X]=load(%q),",depth,k,f))
       elseif accurate then
        handle(format("%s [%q]=load(%q),",depth,k,f))
       else
        handle(format("%s [%s]=load(%q),",depth,k,f))
       end
      elseif tk=="boolean" then
       handle(format("%s [%s]=load(%q),",depth,k and "true" or "false",f))
      elseif tk~="string" then
      elseif noquotes and not reserved[k] and lpegmatch(propername,k) then
       handle(format("%s %s=load(%q),",depth,k,f))
      else
       handle(format("%s [%q]=load(%q),",depth,k,f))
      end
     end
    end
   else
    if tk=="number" then
     if hexify then
      handle(format("%s [0x%X]=%q,",depth,k,tostring(v)))
     elseif accurate then
      handle(format("%s [%q]=%q,",depth,k,tostring(v)))
     else
      handle(format("%s [%s]=%q,",depth,k,tostring(v)))
     end
    elseif tk=="boolean" then
     handle(format("%s [%s]=%q,",depth,k and "true" or "false",tostring(v)))
    elseif tk~="string" then
    elseif noquotes and not reserved[k] and lpegmatch(propername,k) then
     handle(format("%s %s=%q,",depth,k,tostring(v)))
    else
     handle(format("%s [%q]=%q,",depth,k,tostring(v)))
    end
   end
  end
 end
 if level>0 then
  handle(format("%s},",depth))
 end
end
local function serialize(_handle,root,name,specification) 
 local tname=type(name)
 if type(specification)=="table" then
  noquotes=specification.noquotes
  hexify=specification.hexify
  accurate=specification.accurate
  handle=_handle or specification.handle or print
  functions=specification.functions
  compact=specification.compact
  inline=specification.inline and compact
  metacheck=specification.metacheck
  if functions==nil then
   functions=true
  end
  if compact==nil then
   compact=true
  end
  if inline==nil then
   inline=compact
  end
  if metacheck==nil then
   metacheck=true
  end
 else
  noquotes=false
  hexify=false
  handle=_handle or print
  compact=true
  inline=true
  functions=true
  metacheck=true
 end
 if tname=="string" then
  if name=="return" then
   handle("return {")
  else
   handle(name.."={")
  end
 elseif tname=="number" then
  if hexify then
   handle(format("[0x%X]={",name))
  else
   handle("["..name.."]={")
  end
 elseif tname=="boolean" then
  if name then
   handle("return {")
  else
   handle("{")
  end
 else
  handle("t={")
 end
 if root then
  if metacheck and getmetatable(root) then
   local dummy=root._w_h_a_t_e_v_e_r_
   root._w_h_a_t_e_v_e_r_=nil
  end
  if next(root)~=nil then
   do_serialize(root,name,"",0)
  end
 end
 handle("}")
end
function table.serialize(root,name,specification)
 local t={}
 local n=0
 local function flush(s)
  n=n+1
  t[n]=s
 end
 serialize(flush,root,name,specification)
 return concat(t,"\n")
end
table.tohandle=serialize
local maxtab=2*1024
function table.tofile(filename,root,name,specification)
 local f=io.open(filename,'w')
 if f then
  if maxtab>1 then
   local t={}
   local n=0
   local function flush(s)
    n=n+1
    t[n]=s
    if n>maxtab then
     f:write(concat(t,"\n"),"\n") 
     t={} 
     n=0
    end
   end
   serialize(flush,root,name,specification)
   f:write(concat(t,"\n"),"\n")
  else
   local function flush(s)
    f:write(s,"\n")
   end
   serialize(flush,root,name,specification)
  end
  f:close()
  io.flush()
 end
end
local function flattened(t,f,depth) 
 if f==nil then
  f={}
  depth=0xFFFF
 elseif tonumber(f) then
  depth=f
  f={}
 elseif not depth then
  depth=0xFFFF
 end
 for k,v in next,t do
  if type(k)~="number" then
   if depth>0 and type(v)=="table" then
    flattened(v,f,depth-1)
   else
    f[#f+1]=v
   end
  end
 end
 for k=1,#t do
  local v=t[k]
  if depth>0 and type(v)=="table" then
   flattened(v,f,depth-1)
  else
   f[#f+1]=v
  end
 end
 return f
end
table.flattened=flattened
local function collapsed(t,f,h)
 if f==nil then
  f={}
  h={}
 end
 for k=1,#t do
  local v=t[k]
  if type(v)=="table" then
   collapsed(v,f,h)
  elseif not h[v] then
   f[#f+1]=v
   h[v]=true
  end
 end
 return f
end
local function collapsedhash(t,h)
 if h==nil then
  h={}
 end
 for k=1,#t do
  local v=t[k]
  if type(v)=="table" then
   collapsedhash(v,h)
  else
   h[v]=true
  end
 end
 return h
end
table.collapsed=collapsed  
table.collapsedhash=collapsedhash
local function unnest(t,f) 
 if not f then    
  f={}   
 end
 for i=1,#t do
  local v=t[i]
  if type(v)=="table" then
   if type(v[1])=="table" then
    unnest(v,f)
   else
    f[#f+1]=v
   end
  else
   f[#f+1]=v
  end
 end
 return f
end
function table.unnest(t) 
 return unnest(t)
end
local function are_equal(a,b,n,m) 
 if a==b then
  return true
 elseif a and b and #a==#b then
  if not n then
   n=1
  end
  if not m then
   m=#a
  end
  for i=n,m do
   local ai,bi=a[i],b[i]
   if ai==bi then
   elseif type(ai)=="table" and type(bi)=="table" then
    if not are_equal(ai,bi) then
     return false
    end
   else
    return false
   end
  end
  return true
 else
  return false
 end
end
local function identical(a,b) 
 if a~=b then
  for ka,va in next,a do
   local vb=b[ka]
   if va==vb then
   elseif type(va)=="table" and  type(vb)=="table" then
    if not identical(va,vb) then
     return false
    end
   else
    return false
   end
  end
 end
 return true
end
table.identical=identical
table.are_equal=are_equal
local function sparse(old,nest,keeptables)
 local new={}
 for k,v in next,old do
  if not (v=="" or v==false) then
   if nest and type(v)=="table" then
    v=sparse(v,nest)
    if keeptables or next(v)~=nil then
     new[k]=v
    end
   else
    new[k]=v
   end
  end
 end
 return new
end
table.sparse=sparse
function table.compact(t)
 return sparse(t,true,true)
end
function table.contains(t,v)
 if t then
  for i=1,#t do
   if t[i]==v then
    return i
   end
  end
 end
 return false
end
function table.count(t)
 local n=0
 for k,v in next,t do
  n=n+1
 end
 return n
end
function table.swapped(t,s) 
 local n={}
 if s then
  for k,v in next,s do
   n[k]=v
  end
 end
 for k,v in next,t do
  n[v]=k
 end
 return n
end
function table.hashed(t) 
 for i=1,#t do
  t[t[i]]=i
 end
 return t
end
function table.mirrored(t) 
 local n={}
 for k,v in next,t do
  n[v]=k
  n[k]=v
 end
 return n
end
function table.reversed(t)
 if t then
  local tt={}
  local tn=#t
  if tn>0 then
   local ttn=0
   for i=tn,1,-1 do
    ttn=ttn+1
    tt[ttn]=t[i]
   end
  end
  return tt
 end
end
function table.reverse(t) 
 if t then
  local n=#t
  local m=n+1
  for i=1,floor(n/2) do 
   local j=m-i
   t[i],t[j]=t[j],t[i]
  end
  return t
 end
end
local function sequenced(t,sep,simple)
 if not t then
  return ""
 elseif type(t)~="table" then
  return t 
 end
 local n=#t
 local s={}
 if n>0 then
  for i=1,n do
   local v=t[i]
   if type(v)=="table" then
    s[i]="{"..sequenced(v,sep,simple).."}"
   else
    s[i]=tostring(t[i])
   end
  end
 else
  n=0
  for k,v in sortedhash(t) do
   if simple then
    if v==true then
     n=n+1
     s[n]=k
    elseif v and v~="" then
     n=n+1
     if type(v)=="table" then
      s[n]=k.."={"..sequenced(v,sep,simple).."}"
     else
      s[n]=k.."="..tostring(v)
     end
    end
   else
    n=n+1
    if type(v)=="table" then
     s[n]=k.."={"..sequenced(v,sep,simple).."}"
    else
     s[n]=k.."="..tostring(v)
    end
   end
  end
 end
 if sep==true then
  return "{ "..concat(s,", ").." }"
 else
  return concat(s,sep or " | ")
 end
end
table.sequenced=sequenced
function table.print(t,...)
 if type(t)~="table" then
  print(tostring(t))
 else
  serialize(print,t,...)
 end
end
if setinspector then
 setinspector("table",function(v) if type(v)=="table" then serialize(print,v,"table") return true end end)
end
function table.sub(t,i,j)
 return { unpack(t,i,j) }
end
function table.is_empty(t)
 return not t or next(t)==nil
end
function table.has_one_entry(t)
 return t and next(t,next(t))==nil
end
function table.loweredkeys(t) 
 local l={}
 for k,v in next,t do
  l[lower(k)]=v
 end
 return l
end
function table.unique(old)
 local hash={}
 local new={}
 local n=0
 for i=1,#old do
  local oi=old[i]
  if not hash[oi] then
   n=n+1
   new[n]=oi
   hash[oi]=true
  end
 end
 return new
end
function table.sorted(t,...)
 sort(t,...)
 return t 
end
function table.values(t,s) 
 if t then
  local values={}
  local keys={}
  local v=0
  for key,value in next,t do
   if not keys[value] then
    v=v+1
    values[v]=value
    keys[k]=key
   end
  end
  if s then
   sort(values)
  end
  return values
 else
  return {}
 end
end
function table.filtered(t,pattern,sort,cmp)
 if t and type(pattern)=="string" then
  if sort then
   local s
   if cmp then
    s=sortedhashkeys(t,function(a,b) return cmp(t,a,b) end)
   else
    s=sortedkeys(t) 
   end
   local n=0
   local m=#s
   local function kv(s)
    while n<m do
     n=n+1
     local k=s[n]
     if find(k,pattern) then
      return k,t[k]
     end
    end
   end
   return kv,s
  else
   local n=next(t)
   local function iterator()
    while n~=nil do
     local k=n
     n=next(t,k)
     if find(k,pattern) then
      return k,t[k]
     end
    end
   end
   return iterator,t
  end
 else
  return nothing
 end
end
if not table.move then
 function table.move(a1,f,e,t,a2)
  if a2 and a1~=a2 then
   for i=f,e do
    a2[t]=a1[i]
    t=t+1
   end
   return a2
  else
   t=t+e-f
   for i=e,f,-1 do
    a1[t]=a1[i]
    t=t-1
   end
   return a1
  end
 end
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['l-io']={
 version=1.001,
 comment="companion to luat-lib.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
local io=io
local open,flush,write,read=io.open,io.flush,io.write,io.read
local byte,find,gsub,format=string.byte,string.find,string.gsub,string.format
local concat=table.concat
local type=type
if string.find(os.getenv("PATH") or "",";",1,true) then
 io.fileseparator,io.pathseparator="\\",";"
else
 io.fileseparator,io.pathseparator="/",":"
end
local large=0x01000000 
local medium=0x00100000 
local small=0x00020000
local function readall(f)
 local size=f:seek("end")
 if size>0 then
  f:seek("set",0)
  return f:read(size)
 else
  return ""
 end
end
io.readall=readall
function io.loaddata(filename,textmode) 
 local f=open(filename,(textmode and 'r') or 'rb')
 if f then
  local size=f:seek("end")
  local data=nil
  if size>0 then
   f:seek("set",0)
   data=f:read(size)
  end
  f:close()
  return data
 end
end
function io.copydata(source,target,action)
 local f=open(source,"rb")
 if f then
  local g=open(target,"wb")
  if g then
   local size=f:seek("end")
   if size>0 then
    f:seek("set",0)
    local data=f:read(size)
    if action then
     data=action(data)
    end
    if data then
     g:write(data)
    end
   end
   g:close()
  end
  f:close()
  flush()
 end
end
function io.savedata(filename,data,joiner)
 local f=open(filename,"wb")
 if f then
  if type(data)=="table" then
   f:write(concat(data,joiner or ""))
  elseif type(data)=="function" then
   data(f)
  else
   f:write(data or "")
  end
  f:close()
  flush()
  return true
 else
  return false
 end
end
if fio and fio.readline then
 local readline=fio.readline
 function io.loadlines(filename,n) 
  local f=open(filename,'r')
  if not f then
  elseif n then
   local lines={}
   for i=1,n do
    local line=readline(f)
    if line then
     lines[i]=line
    else
     break
    end
   end
   f:close()
   lines=concat(lines,"\n")
   if #lines>0 then
    return lines
   end
  else
   local line=readline(f)
   f:close()
   if line and #line>0 then
    return line
   end
  end
 end
else
 function io.loadlines(filename,n) 
  local f=open(filename,'r')
  if not f then
  elseif n then
   local lines={}
   for i=1,n do
    local line=f:read("*lines")
    if line then
     lines[i]=line
    else
     break
    end
   end
   f:close()
   lines=concat(lines,"\n")
   if #lines>0 then
    return lines
   end
  else
   local line=f:read("*line") or ""
   f:close()
   if #line>0 then
    return line
   end
  end
 end
end
function io.loadchunk(filename,n)
 local f=open(filename,'rb')
 if f then
  local data=f:read(n or 1024)
  f:close()
  if #data>0 then
   return data
  end
 end
end
function io.exists(filename)
 local f=open(filename)
 if f==nil then
  return false
 else
  f:close()
  return true
 end
end
function io.size(filename)
 local f=open(filename)
 if f==nil then
  return 0
 else
  local s=f:seek("end")
  f:close()
  return s
 end
end
local function noflines(f)
 if type(f)=="string" then
  local f=open(filename)
  if f then
   local n=f and noflines(f) or 0
   f:close()
   return n
  else
   return 0
  end
 else
  local n=0
  for _ in f:lines() do
   n=n+1
  end
  f:seek('set',0)
  return n
 end
end
io.noflines=noflines
local nextchar={
 [ 4]=function(f)
  return f:read(1,1,1,1)
 end,
 [ 2]=function(f)
  return f:read(1,1)
 end,
 [ 1]=function(f)
  return f:read(1)
 end,
 [-2]=function(f)
  local a,b=f:read(1,1)
  return b,a
 end,
 [-4]=function(f)
  local a,b,c,d=f:read(1,1,1,1)
  return d,c,b,a
 end
}
function io.characters(f,n)
 if f then
  return nextchar[n or 1],f
 end
end
local nextbyte={
 [4]=function(f)
  local a,b,c,d=f:read(1,1,1,1)
  if d then
   return byte(a),byte(b),byte(c),byte(d)
  end
 end,
 [3]=function(f)
  local a,b,c=f:read(1,1,1)
  if b then
   return byte(a),byte(b),byte(c)
  end
 end,
 [2]=function(f)
  local a,b=f:read(1,1)
  if b then
   return byte(a),byte(b)
  end
 end,
 [1]=function (f)
  local a=f:read(1)
  if a then
   return byte(a)
  end
 end,
 [-2]=function (f)
  local a,b=f:read(1,1)
  if b then
   return byte(b),byte(a)
  end
 end,
 [-3]=function(f)
  local a,b,c=f:read(1,1,1)
  if b then
   return byte(c),byte(b),byte(a)
  end
 end,
 [-4]=function(f)
  local a,b,c,d=f:read(1,1,1,1)
  if d then
   return byte(d),byte(c),byte(b),byte(a)
  end
 end
}
function io.bytes(f,n)
 if f then
  return nextbyte[n or 1],f
 else
  return nil,nil
 end
end
function io.ask(question,default,options)
 while true do
  write(question)
  if options then
   write(format(" [%s]",concat(options,"|")))
  end
  if default then
   write(format(" [%s]",default))
  end
  write(format(" "))
  flush()
  local answer=read()
  answer=gsub(answer,"^%s*(.*)%s*$","%1")
  if answer=="" and default then
   return default
  elseif not options then
   return answer
  else
   for k=1,#options do
    if options[k]==answer then
     return answer
    end
   end
   local pattern="^"..answer
   for k=1,#options do
    local v=options[k]
    if find(v,pattern) then
     return v
    end
   end
  end
 end
end
local function readnumber(f,n,m) 
 if m then
  f:seek("set",n)
  n=m
 end
 if n==1 then
  return byte(f:read(1))
 elseif n==2 then
  local a,b=byte(f:read(2),1,2)
  return 0x100*a+b
 elseif n==3 then
  local a,b,c=byte(f:read(3),1,3)
  return 0x10000*a+0x100*b+c
 elseif n==4 then
  local a,b,c,d=byte(f:read(4),1,4)
  return 0x1000000*a+0x10000*b+0x100*c+d
 elseif n==8 then
  local a,b=readnumber(f,4),readnumber(f,4)
  return 0x100*a+b
 elseif n==12 then
  local a,b,c=readnumber(f,4),readnumber(f,4),readnumber(f,4)
  return 0x10000*a+0x100*b+c
 elseif n==-2 then
  local b,a=byte(f:read(2),1,2)
  return 0x100*a+b
 elseif n==-3 then
  local c,b,a=byte(f:read(3),1,3)
  return 0x10000*a+0x100*b+c
 elseif n==-4 then
  local d,c,b,a=byte(f:read(4),1,4)
  return 0x1000000*a+0x10000*b+0x100*c+d
 elseif n==-8 then
  local h,g,f,e,d,c,b,a=byte(f:read(8),1,8)
  return 0x100000000000000*a+0x1000000000000*b+0x10000000000*c+0x100000000*d+0x1000000*e+0x10000*f+0x100*g+h
 else
  return 0
 end
end
io.readnumber=readnumber
function io.readstring(f,n,m)
 if m then
  f:seek("set",n)
  n=m
 end
 local str=gsub(f:read(n),"\000","")
 return str
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['l-file']={
 version=1.001,
 comment="companion to luat-lib.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
file=file or {}
local file=file
if not lfs then
 lfs=optionalrequire("lfs")
end
local insert,concat=table.insert,table.concat
local match,find,gmatch=string.match,string.find,string.gmatch
local lpegmatch=lpeg.match
local getcurrentdir,attributes=lfs.currentdir,lfs.attributes
local checkedsplit=string.checkedsplit
local P,R,S,C,Cs,Cp,Cc,Ct=lpeg.P,lpeg.R,lpeg.S,lpeg.C,lpeg.Cs,lpeg.Cp,lpeg.Cc,lpeg.Ct
local attributes=lfs.attributes
function lfs.isdir(name)
 if name then
  return attributes(name,"mode")=="directory"
 end
end
function lfs.isfile(name)
 if name then
  local a=attributes(name,"mode")
  return a=="file" or a=="link" or nil
 end
end
function lfs.isfound(name)
 if name then
  local a=attributes(name,"mode")
  return (a=="file" or a=="link") and name or nil
 end
end
function lfs.modification(name)
 return name and attributes(name,"modification") or nil
end
if sandbox then
 sandbox.redefine(lfs.isfile,"lfs.isfile")
 sandbox.redefine(lfs.isdir,"lfs.isdir")
 sandbox.redefine(lfs.isfound,"lfs.isfound")
end
local colon=P(":")
local period=P(".")
local periods=P("..")
local fwslash=P("/")
local bwslash=P("\\")
local slashes=S("\\/")
local noperiod=1-period
local noslashes=1-slashes
local name=noperiod^1
local suffix=period/""*(1-period-slashes)^1*-1
local pattern=C((1-(slashes^1*noslashes^1*-1))^1)*P(1) 
local function pathpart(name,default)
 return name and lpegmatch(pattern,name) or default or ""
end
local pattern=(noslashes^0*slashes)^1*C(noslashes^1)*-1
local function basename(name)
 return name and lpegmatch(pattern,name) or name
end
local pattern=(noslashes^0*slashes^1)^0*Cs((1-suffix)^1)*suffix^0
local function nameonly(name)
 return name and lpegmatch(pattern,name) or name
end
local pattern=(noslashes^0*slashes)^0*(noperiod^1*period)^1*C(noperiod^1)*-1
local function suffixonly(name)
 return name and lpegmatch(pattern,name) or ""
end
local pattern=(noslashes^0*slashes)^0*noperiod^1*((period*C(noperiod^1))^1)*-1+Cc("")
local function suffixesonly(name)
 if name then
  return lpegmatch(pattern,name)
 else
  return ""
 end
end
file.pathpart=pathpart
file.basename=basename
file.nameonly=nameonly
file.suffixonly=suffixonly
file.suffix=suffixonly
file.suffixesonly=suffixesonly
file.suffixes=suffixesonly
file.dirname=pathpart   
file.extname=suffixonly
local drive=C(R("az","AZ"))*colon
local path=C((noslashes^0*slashes)^0)
local suffix=period*C(P(1-period)^0*P(-1))
local base=C((1-suffix)^0)
local rest=C(P(1)^0)
drive=drive+Cc("")
path=path+Cc("")
base=base+Cc("")
suffix=suffix+Cc("")
local pattern_a=drive*path*base*suffix
local pattern_b=path*base*suffix
local pattern_c=C(drive*path)*C(base*suffix) 
local pattern_d=path*rest
function file.splitname(str,splitdrive)
 if not str then
 elseif splitdrive then
  return lpegmatch(pattern_a,str) 
 else
  return lpegmatch(pattern_b,str) 
 end
end
function file.splitbase(str)
 if str then
  return lpegmatch(pattern_d,str) 
 else
  return "",str 
 end
end
function file.nametotable(str,splitdrive)
 if str then
  local path,drive,subpath,name,base,suffix=lpegmatch(pattern_c,str)
  if splitdrive then
   return {
    path=path,
    drive=drive,
    subpath=subpath,
    name=name,
    base=base,
    suffix=suffix,
   }
  else
   return {
    path=path,
    name=name,
    base=base,
    suffix=suffix,
   }
  end
 end
end
local pattern=Cs(((period*(1-period-slashes)^1*-1)/""+1)^1)
function file.removesuffix(name)
 return name and lpegmatch(pattern,name)
end
local suffix=period/""*(1-period-slashes)^1*-1
local pattern=Cs((noslashes^0*slashes^1)^0*((1-suffix)^1))*Cs(suffix)
function file.addsuffix(filename,suffix,criterium)
 if not filename or not suffix or suffix=="" then
  return filename
 elseif criterium==true then
  return filename.."."..suffix
 elseif not criterium then
  local n,s=lpegmatch(pattern,filename)
  if not s or s=="" then
   return filename.."."..suffix
  else
   return filename
  end
 else
  local n,s=lpegmatch(pattern,filename)
  if s and s~="" then
   local t=type(criterium)
   if t=="table" then
    for i=1,#criterium do
     if s==criterium[i] then
      return filename
     end
    end
   elseif t=="string" then
    if s==criterium then
     return filename
    end
   end
  end
  return (n or filename).."."..suffix
 end
end
local suffix=period*(1-period-slashes)^1*-1
local pattern=Cs((1-suffix)^0)
function file.replacesuffix(name,suffix)
 if name and suffix and suffix~="" then
  return lpegmatch(pattern,name).."."..suffix
 else
  return name
 end
end
local reslasher=lpeg.replacer(P("\\"),"/")
function file.reslash(str)
 return str and lpegmatch(reslasher,str)
end
if lfs.isreadablefile and lfs.iswritablefile then
 file.is_readable=lfs.isreadablefile
 file.is_writable=lfs.iswritablefile
else
 function file.is_writable(name)
  if not name then
  elseif lfs.isdir(name) then
   name=name.."/m_t_x_t_e_s_t.tmp"
   local f=io.open(name,"wb")
   if f then
    f:close()
    os.remove(name)
    return true
   end
  elseif lfs.isfile(name) then
   local f=io.open(name,"ab")
   if f then
    f:close()
    return true
   end
  else
   local f=io.open(name,"ab")
   if f then
    f:close()
    os.remove(name)
    return true
   end
  end
  return false
 end
 local readable=P("r")*Cc(true)
 function file.is_readable(name)
  if name then
   local a=attributes(name)
   return a and lpegmatch(readable,a.permissions) or false
  else
   return false
  end
 end
end
file.isreadable=file.is_readable 
file.iswritable=file.is_writable 
function file.size(name)
 if name then
  local a=attributes(name)
  return a and a.size or 0
 else
  return 0
 end
end
function file.splitpath(str,separator) 
 return str and checkedsplit(lpegmatch(reslasher,str),separator or io.pathseparator)
end
function file.joinpath(tab,separator) 
 return tab and concat(tab,separator or io.pathseparator) 
end
local someslash=S("\\/")
local stripper=Cs(P(fwslash)^0/""*reslasher)
local isnetwork=someslash*someslash*(1-someslash)+(1-fwslash-colon)^1*colon
local isroot=fwslash^1*-1
local hasroot=fwslash^1
local reslasher=lpeg.replacer(S("\\/"),"/")
local deslasher=lpeg.replacer(S("\\/")^1,"/")
function file.join(one,two,three,...)
 if not two then
  return one=="" and one or lpegmatch(reslasher,one)
 end
 if one=="" then
  return lpegmatch(stripper,three and concat({ two,three,... },"/") or two)
 end
 if lpegmatch(isnetwork,one) then
  local one=lpegmatch(reslasher,one)
  local two=lpegmatch(deslasher,three and concat({ two,three,... },"/") or two)
  if lpegmatch(hasroot,two) then
   return one..two
  else
   return one.."/"..two
  end
 elseif lpegmatch(isroot,one) then
  local two=lpegmatch(deslasher,three and concat({ two,three,... },"/") or two)
  if lpegmatch(hasroot,two) then
   return two
  else
   return "/"..two
  end
 else
  return lpegmatch(deslasher,concat({  one,two,three,... },"/"))
 end
end
local drivespec=R("az","AZ")^1*colon
local anchors=fwslash+drivespec
local untouched=periods+(1-period)^1*P(-1)
local mswindrive=Cs(drivespec*(bwslash/"/"+fwslash)^0)
local mswinuncpath=(bwslash+fwslash)*(bwslash+fwslash)*Cc("//")
local splitstarter=(mswindrive+mswinuncpath+Cc(false))*Ct(lpeg.splitat(S("/\\")^1))
local absolute=fwslash
function file.collapsepath(str,anchor) 
 if not str then
  return
 end
 if anchor==true and not lpegmatch(anchors,str) then
  str=getcurrentdir().."/"..str
 end
 if str=="" or str=="." then
  return "."
 elseif lpegmatch(untouched,str) then
  return lpegmatch(reslasher,str)
 end
 local starter,oldelements=lpegmatch(splitstarter,str)
 local newelements={}
 local i=#oldelements
 while i>0 do
  local element=oldelements[i]
  if element=='.' then
  elseif element=='..' then
   local n=i-1
   while n>0 do
    local element=oldelements[n]
    if element~='..' and element~='.' then
     oldelements[n]='.'
     break
    else
     n=n-1
    end
    end
   if n<1 then
      insert(newelements,1,'..')
   end
  elseif element~="" then
   insert(newelements,1,element)
  end
  i=i-1
 end
 if #newelements==0 then
  return starter or "."
 elseif starter then
  return starter..concat(newelements,'/')
 elseif lpegmatch(absolute,str) then
  return "/"..concat(newelements,'/')
 else
  newelements=concat(newelements,'/')
  if anchor=="." and find(str,"^%./") then
   return "./"..newelements
  else
   return newelements
  end
 end
end
local validchars=R("az","09","AZ","--","..")
local pattern_a=lpeg.replacer(1-validchars)
local pattern_a=Cs((validchars+P(1)/"-")^1)
local whatever=P("-")^0/""
local pattern_b=Cs(whatever*(1-whatever*-1)^1)
function file.robustname(str,strict)
 if str then
  str=lpegmatch(pattern_a,str) or str
  if strict then
   return lpegmatch(pattern_b,str) or str 
  else
   return str
  end
 end
end
local loaddata=io.loaddata
local savedata=io.savedata
file.readdata=loaddata
file.savedata=savedata
function file.copy(oldname,newname)
 if oldname and newname then
  local data=loaddata(oldname)
  if data and data~="" then
   savedata(newname,data)
  end
 end
end
local letter=R("az","AZ")+S("_-+")
local separator=P("://")
local qualified=period^0*fwslash+letter*colon+letter^1*separator+letter^1*fwslash
local rootbased=fwslash+letter*colon
lpeg.patterns.qualified=qualified
lpeg.patterns.rootbased=rootbased
function file.is_qualified_path(filename)
 return filename and lpegmatch(qualified,filename)~=nil
end
function file.is_rootbased_path(filename)
 return filename and lpegmatch(rootbased,filename)~=nil
end
function file.strip(name,dir)
 if name then
  local b,a=match(name,"^(.-)"..dir.."(.*)$")
  return a~="" and a or name
 end
end
function lfs.mkdirs(path)
 local full=""
 for sub in gmatch(path,"(/*[^\\/]+)") do 
  full=full..sub
  lfs.mkdir(full)
 end
end
function file.withinbase(path) 
 local l=0
 if not find(path,"^/") then
  path="/"..path
 end
 for dir in gmatch(path,"/([^/]+)") do
  if dir==".." then
   l=l-1
  elseif dir~="." then
   l=l+1
  end
  if l<0 then
   return false
  end
 end
 return true
end
local symlinkattributes=lfs.symlinkattributes
function lfs.readlink(name)
 return symlinkattributes(name,"target") or nil
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['l-boolean']={
 version=1.001,
 comment="companion to luat-lib.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
local type,tonumber=type,tonumber
boolean=boolean or {}
local boolean=boolean
function boolean.tonumber(b)
 if b then return 1 else return 0 end 
end
function toboolean(str,tolerant) 
 if  str==nil then
  return false
 elseif str==false then
  return false
 elseif str==true then
  return true
 elseif str=="true" then
  return true
 elseif str=="false" then
  return false
 elseif not tolerant then
  return false
 elseif str==0 then
  return false
 elseif (tonumber(str) or 0)>0 then
  return true
 else
  return str=="yes" or str=="on" or str=="t"
 end
end
string.toboolean=toboolean
function string.booleanstring(str)
 if str=="0" then
  return false
 elseif str=="1" then
  return true
 elseif str=="" then
  return false
 elseif str=="false" then
  return false
 elseif str=="true" then
  return true
 elseif (tonumber(str) or 0)>0 then
  return true
 else
  return str=="yes" or str=="on" or str=="t"
 end
end
function string.is_boolean(str,default,strict)
 if type(str)=="string" then
  if str=="true" or str=="yes" or str=="on" or str=="t" or (not strict and str=="1") then
   return true
  elseif str=="false" or str=="no" or str=="off" or str=="f" or (not strict and str=="0") then
   return false
  end
 end
 return default
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['l-math']={
 version=1.001,
 comment="companion to luat-lib.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
if not math.ceiling then
 math.ceiling=math.ceil
end
if not math.round then
 local floor=math.floor
 function math.round(x) return floor(x+0.5) end
end
if not math.div then
 local floor=math.floor
 function math.div(n,m) return floor(n/m) end
end
if not math.mod then
 function math.mod(n,m) return n%m end
end
if not math.sind then
 local sin,cos,tan=math.sin,math.cos,math.tan
 local pipi=2*math.pi/360
 function math.sind(d) return sin(d*pipi) end
 function math.cosd(d) return cos(d*pipi) end
 function math.tand(d) return tan(d*pipi) end
end
if not math.odd then
 function math.odd (n) return n%2~=0 end
 function math.even(n) return n%2==0 end
end
if not math.cosh then
 local exp=math.exp
 function math.cosh(x)
  local xx=exp(x)
  return (xx+1/xx)/2
 end
 function math.sinh(x)
  local xx=exp(x)
  return (xx-1/xx)/2
 end
 function math.tanh(x)
  local xx=exp(x)
  return (xx-1/xx)/(xx+1/xx)
 end
end
if not math.pow then
 function math.pow(x,y)
  return x^y
 end
end
if not math.atan2 then
 math.atan2=math.atan
end
if not math.ldexp then
 function math.ldexp(x,e)
  return x*2.0^e
 end
end
if not math.log10 then
 local log=math.log
 function math.log10(x)
  return log(x,10)
 end
end
if not math.type then
 function math.type()
  return "float"
 end
end
if not math.tointeger then
 math.mininteger=-0x4FFFFFFFFFFF
 math.maxinteger=0x4FFFFFFFFFFF
 local floor=math.floor
 function math.tointeger(n)
  local f=floor(n)
  return f==n and f or nil
 end
end
if not math.ult then
 local floor=math.floor
 function math.tointeger(m,n)
  return floor(m)<floor(n) 
 end
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['util-str']={
 version=1.001,
 comment="companion to luat-lib.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
utilities=utilities or {}
utilities.strings=utilities.strings or {}
local strings=utilities.strings
local format,gsub,rep,sub,find=string.format,string.gsub,string.rep,string.sub,string.find
local load,dump=load,string.dump
local tonumber,type,tostring,next,setmetatable=tonumber,type,tostring,next,setmetatable
local unpack,concat=table.unpack,table.concat
local P,V,C,S,R,Ct,Cs,Cp,Carg,Cc=lpeg.P,lpeg.V,lpeg.C,lpeg.S,lpeg.R,lpeg.Ct,lpeg.Cs,lpeg.Cp,lpeg.Carg,lpeg.Cc
local patterns,lpegmatch=lpeg.patterns,lpeg.match
local utfchar,utfbyte,utflen=utf.char,utf.byte,utf.len
local loadstripped=function(str,shortcuts)
 if shortcuts then
  return load(dump(load(str),true),nil,nil,shortcuts)
 else
  return load(dump(load(str),true))
 end
end
if not number then number={} end 
local stripzero=patterns.stripzero
local stripzeros=patterns.stripzeros
local newline=patterns.newline
local endofstring=patterns.endofstring
local anything=patterns.anything
local whitespace=patterns.whitespace
local space=patterns.space
local spacer=patterns.spacer
local spaceortab=patterns.spaceortab
local digit=patterns.digit
local sign=patterns.sign
local period=patterns.period
local ptf=1/65536
local bpf=(7200/7227)/65536
local function points(n)
 if n==0 then
  return "0pt"
 end
 n=tonumber(n)
 if not n or n==0 then
  return "0pt"
 end
 n=n*ptf
 if n%1==0 then
  return format("%ipt",n)
 end
 return lpegmatch(stripzeros,format("%.5fpt",n)) 
end
local function basepoints(n)
 if n==0 then
  return "0pt"
 end
 n=tonumber(n)
 if not n or n==0 then
  return "0pt"
 end
 n=n*bpf
 if n%1==0 then
  return format("%ibp",n)
 end
 return lpegmatch(stripzeros,format("%.5fbp",n)) 
end
number.points=points
number.basepoints=basepoints
local rubish=spaceortab^0*newline
local anyrubish=spaceortab+newline
local stripped=(spaceortab^1/"")*newline
local leading=rubish^0/""
local trailing=(anyrubish^1*endofstring)/""
local redundant=rubish^3/"\n"
local pattern=Cs(leading*(trailing+redundant+stripped+anything)^0)
function strings.collapsecrlf(str)
 return lpegmatch(pattern,str)
end
local repeaters={} 
function strings.newrepeater(str,offset)
 offset=offset or 0
 local s=repeaters[str]
 if not s then
  s={}
  repeaters[str]=s
 end
 local t=s[offset]
 if t then
  return t
 end
 t={}
 setmetatable(t,{ __index=function(t,k)
  if not k then
   return ""
  end
  local n=k+offset
  local s=n>0 and rep(str,n) or ""
  t[k]=s
  return s
 end })
 s[offset]=t
 return t
end
local extra,tab,start=0,0,4,0
local nspaces=strings.newrepeater(" ")
string.nspaces=nspaces
local pattern=Carg(1)/function(t)
  extra,tab,start=0,t or 7,1
 end*Cs((
   Cp()*patterns.tab/function(position)
    local current=(position-start+1)+extra
    local spaces=tab-(current-1)%tab
    if spaces>0 then
     extra=extra+spaces-1
     return nspaces[spaces] 
    else
     return ""
    end
   end+newline*Cp()/function(position)
    extra,start=0,position
   end+anything
  )^1)
function strings.tabtospace(str,tab)
 return lpegmatch(pattern,str,1,tab or 7)
end
function string.utfpadding(s,n)
 if not n or n==0 then
  return ""
 end
 local l=utflen(s)
 if n>0 then
  return nspaces[n-l]
 else
  return nspaces[-n-l]
 end
end
local optionalspace=spacer^0
local nospace=optionalspace/""
local endofline=nospace*newline
local stripend=(whitespace^1*endofstring)/""
local normalline=(nospace*((1-optionalspace*(newline+endofstring))^1)*nospace)
local stripempty=endofline^1/""
local normalempty=endofline^1
local singleempty=endofline*(endofline^0/"")
local doubleempty=endofline*endofline^-1*(endofline^0/"")
local stripstart=stripempty^0
local intospace=whitespace^1/" "
local noleading=whitespace^1/""
local notrailing=noleading*endofstring
local p_prune_normal=Cs (stripstart*(stripend+normalline+normalempty )^0 )
local p_prune_collapse=Cs (stripstart*(stripend+normalline+doubleempty )^0 )
local p_prune_noempty=Cs (stripstart*(stripend+normalline+singleempty )^0 )
local p_prune_intospace=Cs (noleading*(notrailing+intospace+1     )^0 )
local p_retain_normal=Cs ((normalline+normalempty )^0 )
local p_retain_collapse=Cs ((normalline+doubleempty )^0 )
local p_retain_noempty=Cs ((normalline+singleempty )^0 )
local striplinepatterns={
 ["prune"]=p_prune_normal,
 ["prune and collapse"]=p_prune_collapse,
 ["prune and no empty"]=p_prune_noempty,
 ["prune and to space"]=p_prune_intospace,
 ["retain"]=p_retain_normal,
 ["retain and collapse"]=p_retain_collapse,
 ["retain and no empty"]=p_retain_noempty,
 ["collapse"]=patterns.collapser,
}
setmetatable(striplinepatterns,{ __index=function(t,k) return p_prune_collapse end })
strings.striplinepatterns=striplinepatterns
function strings.striplines(str,how)
 return str and lpegmatch(striplinepatterns[how],str) or str
end
function strings.collapse(str) 
 return str and lpegmatch(p_prune_intospace,str) or str
end
strings.striplong=strings.striplines
function strings.nice(str)
 str=gsub(str,"[:%-+_]+"," ") 
 return str
end
local n=0
local sequenced=table.sequenced
function string.autodouble(s,sep)
 if s==nil then
  return '""'
 end
 local t=type(s)
 if t=="number" then
  return tostring(s) 
 end
 if t=="table" then
  return ('"'..sequenced(s,sep or ",")..'"')
 end
 return ('"'..tostring(s)..'"')
end
function string.autosingle(s,sep)
 if s==nil then
  return "''"
 end
 local t=type(s)
 if t=="number" then
  return tostring(s) 
 end
 if t=="table" then
  return ("'"..sequenced(s,sep or ",").."'")
 end
 return ("'"..tostring(s).."'")
end
local tracedchars={ [0]=
 "[null]","[soh]","[stx]","[etx]","[eot]","[enq]","[ack]","[bel]",
 "[bs]","[ht]","[lf]","[vt]","[ff]","[cr]","[so]","[si]",
 "[dle]","[dc1]","[dc2]","[dc3]","[dc4]","[nak]","[syn]","[etb]",
 "[can]","[em]","[sub]","[esc]","[fs]","[gs]","[rs]","[us]",
 "[space]",
}
string.tracedchars=tracedchars
strings.tracers=tracedchars
function string.tracedchar(b)
 if type(b)=="number" then
  return tracedchars[b] or (utfchar(b).." (U+"..format("%05X",b)..")")
 else
  local c=utfbyte(b)
  return tracedchars[c] or (b.." (U+"..(c and format("%05X",c) or "?????")..")")
 end
end
function number.signed(i)
 if i>0 then
  return "+",i
 else
  return "-",-i
 end
end
local two=digit*digit
local three=two*digit
local prefix=(Carg(1)*three)^1
local splitter=Cs (
 (((1-(three^1*period))^1+C(three))*prefix+C((1-period)^1))*(anything/""*Carg(2))*C(2)
)
local splitter3=Cs (
 three*prefix*endofstring+two*prefix*endofstring+digit*prefix*endofstring+three+two+digit
)
patterns.formattednumber=splitter
function number.formatted(n,sep1,sep2)
 if sep1==false then
  if type(n)=="number" then
   n=tostring(n)
  end
  return lpegmatch(splitter3,n,1,sep2 or ".")
 else
  if type(n)=="number" then
   n=format("%0.2f",n)
  end
  if sep1==true then
   return lpegmatch(splitter,n,1,".",",")
  elseif sep1=="." then
   return lpegmatch(splitter,n,1,sep1,sep2 or ",")
  elseif sep1=="," then
   return lpegmatch(splitter,n,1,sep1,sep2 or ".")
  else
   return lpegmatch(splitter,n,1,sep1 or ",",sep2 or ".")
  end
 end
end
local p=Cs(
  P("-")^0*(P("0")^1/"")^0*(1-period)^0*(period*P("0")^1*endofstring/""+period^0)*P(1-P("0")^1*endofstring)^0
 )
function number.compactfloat(n,fmt)
 if n==0 then
  return "0"
 elseif n==1 then
  return "1"
 end
 n=lpegmatch(p,format(fmt or "%0.3f",n))
 if n=="." or n=="" or n=="-" then
  return "0"
 end
 return n
end
local zero=P("0")^1/""
local plus=P("+")/""
local minus=P("-")
local separator=period
local trailing=zero^1*#S("eE")
local exponent=(S("eE")*(plus+Cs((minus*zero^0*endofstring)/"")+minus)*zero^0*(endofstring*Cc("0")+anything^1))
local pattern_a=Cs(minus^0*digit^1*(separator/""*trailing+separator*(trailing+digit)^0)*exponent)
local pattern_b=Cs((exponent+anything)^0)
function number.sparseexponent(f,n)
 if not n then
  n=f
  f="%e"
 end
 local tn=type(n)
 if tn=="string" then 
  local m=tonumber(n)
  if m then
   return lpegmatch((f=="%e" or f=="%E") and pattern_a or pattern_b,format(f,m))
  end
 elseif tn=="number" then
  return lpegmatch((f=="%e" or f=="%E") and pattern_a or pattern_b,format(f,n))
 end
 return tostring(n)
end
local hf={}
local hs={}
setmetatable(hf,{ __index=function(t,k)
 local v="%."..k.."f"
 t[k]=v
 return v
end } )
setmetatable(hs,{ __index=function(t,k)
 local v="%"..k.."s"
 t[k]=v
 return v
end } )
function number.formattedfloat(n,b,a)
 local s=format(hf[a],n)
 local l=(b or 0)+(a or 0)+1
 if #s<l then
  return format(hs[l],s)
 else
  return s
 end
end
local template=[[
%s
%s
return function(%s) return %s end
]]
local pattern=Cs(Cc('"')*(
 (1-S('"\\\n\r'))^1+P('"')/'\\"'+P('\\')/'\\\\'+P('\n')/'\\n'+P('\r')/'\\r'
)^0*Cc('"'))
patterns.escapedquotes=pattern
function string.escapedquotes(s)
 return lpegmatch(pattern,s)
end
local preamble=""
local environment={
 global=global or _G,
 lpeg=lpeg,
 type=type,
 tostring=tostring,
 tonumber=tonumber,
 format=string.format,
 concat=table.concat,
 signed=number.signed,
 points=number.points,
 basepoints=number.basepoints,
 utfchar=utf.char,
 utfbyte=utf.byte,
 lpegmatch=lpeg.match,
 nspaces=string.nspaces,
 utfpadding=string.utfpadding,
 tracedchar=string.tracedchar,
 autosingle=string.autosingle,
 autodouble=string.autodouble,
 sequenced=table.sequenced,
 formattednumber=number.formatted,
 sparseexponent=number.sparseexponent,
 formattedfloat=number.formattedfloat,
 stripzero=patterns.stripzero,
 stripzeros=patterns.stripzeros,
 escapedquotes=string.escapedquotes,
 FORMAT=string.f6,
}
local arguments={ "a1" } 
setmetatable(arguments,{ __index=function(t,k)
  local v=t[k-1]..",a"..k
  t[k]=v
  return v
 end
})
local prefix_any=C((sign+space+period+digit)^0)
local prefix_sub=(C((sign+digit)^0)+Cc(0))*period*(C((sign+digit)^0)+Cc(0))
local prefix_tab=P("{")*C((1-P("}"))^0)*P("}")+C((1-R("az","AZ","09","%%"))^0)
local format_s=function(f)
 n=n+1
 if f and f~="" then
  return format("format('%%%ss',a%s)",f,n)
 else 
  return format("(a%s or '')",n) 
 end
end
local format_S=function(f) 
 n=n+1
 if f and f~="" then
  return format("format('%%%ss',tostring(a%s))",f,n)
 else
  return format("tostring(a%s)",n)
 end
end
local format_right=function(f)
 n=n+1
 f=tonumber(f)
 if not f or f==0 then
  return format("(a%s or '')",n)
 elseif f>0 then
  return format("utfpadding(a%s,%i)..a%s",n,f,n)
 else
  return format("a%s..utfpadding(a%s,%i)",n,n,f)
 end
end
local format_left=function(f)
 n=n+1
 f=tonumber(f)
 if not f or f==0 then
  return format("(a%s or '')",n)
 end
 if f<0 then
  return format("utfpadding(a%s,%i)..a%s",n,-f,n)
 else
  return format("a%s..utfpadding(a%s,%i)",n,n,-f)
 end
end
local format_q=JITSUPPORTED and function()
 n=n+1
 return format("(a%s ~= nil and format('%%q',tostring(a%s)) or '')",n,n)
end or function()
 n=n+1
 return format("(a%s ~= nil and format('%%q',a%s) or '')",n,n)
end
local format_Q=function() 
 n=n+1
 return format("escapedquotes(tostring(a%s))",n)
end
local format_i=function(f)
 n=n+1
 if f and f~="" then
  return format("format('%%%si',a%s)",f,n)
 else
  return format("format('%%i',a%s)",n) 
 end
end
local format_d=format_i
local format_I=function(f)
 n=n+1
 return format("format('%%s%%%si',signed(a%s))",f,n)
end
local format_f=function(f)
 n=n+1
 return format("format('%%%sf',a%s)",f,n)
end
local format_F=function(f) 
 n=n+1
 if not f or f=="" then
  return format("(((a%s > -0.0000000005 and a%s < 0.0000000005) and '0') or format((a%s %% 1 == 0) and '%%i' or '%%.9f',a%s))",n,n,n,n)
 else
  return format("format((a%s %% 1 == 0) and '%%i' or '%%%sf',a%s)",n,f,n)
 end
end
local format_k=function(b,a) 
 n=n+1
 return format("formattedfloat(a%s,%s,%s)",n,b or 0,a or 0)
end
local format_g=function(f)
 n=n+1
 return format("format('%%%sg',a%s)",f,n)
end
local format_G=function(f)
 n=n+1
 return format("format('%%%sG',a%s)",f,n)
end
local format_e=function(f)
 n=n+1
 return format("format('%%%se',a%s)",f,n)
end
local format_E=function(f)
 n=n+1
 return format("format('%%%sE',a%s)",f,n)
end
local format_j=function(f)
 n=n+1
 return format("sparseexponent('%%%se',a%s)",f,n)
end
local format_J=function(f)
 n=n+1
 return format("sparseexponent('%%%sE',a%s)",f,n)
end
local format_x=function(f)
 n=n+1
 return format("format('%%%sx',a%s)",f,n)
end
local format_X=function(f)
 n=n+1
 return format("format('%%%sX',a%s)",f,n)
end
local format_o=function(f)
 n=n+1
 return format("format('%%%so',a%s)",f,n)
end
local format_c=function()
 n=n+1
 return format("utfchar(a%s)",n)
end
local format_C=function()
 n=n+1
 return format("tracedchar(a%s)",n)
end
local format_r=function(f)
 n=n+1
 return format("format('%%%s.0f',a%s)",f,n)
end
local format_h=function(f)
 n=n+1
 if f=="-" then
  f=sub(f,2)
  return format("format('%%%sx',type(a%s) == 'number' and a%s or utfbyte(a%s))",f=="" and "05" or f,n,n,n)
 else
  return format("format('0x%%%sx',type(a%s) == 'number' and a%s or utfbyte(a%s))",f=="" and "05" or f,n,n,n)
 end
end
local format_H=function(f)
 n=n+1
 if f=="-" then
  f=sub(f,2)
  return format("format('%%%sX',type(a%s) == 'number' and a%s or utfbyte(a%s))",f=="" and "05" or f,n,n,n)
 else
  return format("format('0x%%%sX',type(a%s) == 'number' and a%s or utfbyte(a%s))",f=="" and "05" or f,n,n,n)
 end
end
local format_u=function(f)
 n=n+1
 if f=="-" then
  f=sub(f,2)
  return format("format('%%%sx',type(a%s) == 'number' and a%s or utfbyte(a%s))",f=="" and "05" or f,n,n,n)
 else
  return format("format('u+%%%sx',type(a%s) == 'number' and a%s or utfbyte(a%s))",f=="" and "05" or f,n,n,n)
 end
end
local format_U=function(f)
 n=n+1
 if f=="-" then
  f=sub(f,2)
  return format("format('%%%sX',type(a%s) == 'number' and a%s or utfbyte(a%s))",f=="" and "05" or f,n,n,n)
 else
  return format("format('U+%%%sX',type(a%s) == 'number' and a%s or utfbyte(a%s))",f=="" and "05" or f,n,n,n)
 end
end
local format_p=function()
 n=n+1
 return format("points(a%s)",n)
end
local format_b=function()
 n=n+1
 return format("basepoints(a%s)",n)
end
local format_t=function(f)
 n=n+1
 if f and f~="" then
  return format("concat(a%s,%q)",n,f)
 else
  return format("concat(a%s)",n)
 end
end
local format_T=function(f)
 n=n+1
 if f and f~="" then
  return format("sequenced(a%s,%q)",n,f)
 else
  return format("sequenced(a%s)",n)
 end
end
local format_l=function()
 n=n+1
 return format("(a%s and 'true' or 'false')",n)
end
local format_L=function()
 n=n+1
 return format("(a%s and 'TRUE' or 'FALSE')",n)
end
local format_n=function() 
 n=n+1
 return format("((a%s %% 1 == 0) and format('%%i',a%s) or tostring(a%s))",n,n,n)
end
local format_N  if environment.FORMAT then
 format_N=function(f)
  n=n+1
  if not f or f=="" then
   return format("FORMAT(a%s,'%%.9f')",n)
  elseif f==".6" or f=="0.6" then
   return format("FORMAT(a%s)",n)
  else
   return format("FORMAT(a%s,'%%%sf')",n,f)
  end
 end
else
 format_N=function(f) 
  n=n+1
  if not f or f=="" then
   f=".9"
  end 
  return format("(((a%s %% 1 == 0) and format('%%i',a%s)) or lpegmatch(stripzero,format('%%%sf',a%s)))",n,n,f,n)
 end
end
local format_a=function(f)
 n=n+1
 if f and f~="" then
  return format("autosingle(a%s,%q)",n,f)
 else
  return format("autosingle(a%s)",n)
 end
end
local format_A=function(f)
 n=n+1
 if f and f~="" then
  return format("autodouble(a%s,%q)",n,f)
 else
  return format("autodouble(a%s)",n)
 end
end
local format_w=function(f) 
 n=n+1
 f=tonumber(f)
 if f then 
  return format("nspaces[%s+a%s]",f,n) 
 else
  return format("nspaces[a%s]",n) 
 end
end
local format_W=function(f) 
 return format("nspaces[%s]",tonumber(f) or 0)
end
local format_m=function(f)
 n=n+1
 if not f or f=="" then
  f=","
 end
 if f=="0" then
  return format([[formattednumber(a%s,false)]],n)
 else
  return format([[formattednumber(a%s,%q,".")]],n,f)
 end
end
local format_M=function(f)
 n=n+1
 if not f or f=="" then
  f="."
 end
 if f=="0" then
  return format([[formattednumber(a%s,false)]],n)
 else
  return format([[formattednumber(a%s,%q,",")]],n,f)
 end
end
local format_z=function(f)
 n=n+(tonumber(f) or 1)
 return "''" 
end
local format_rest=function(s)
 return format("%q",s) 
end
local format_extension=function(extensions,f,name)
 local extension=extensions[name] or "tostring(%s)"
 local f=tonumber(f) or 1
 local w=find(extension,"%.%.%.")
 if w then
  if f==0 then
   extension=gsub(extension,"%.%.%.","")
   return extension
  elseif f==1 then
   extension=gsub(extension,"%.%.%.","%%s")
   n=n+1
   local a="a"..n
   return format(extension,a,a) 
  elseif f<0 then
   local a="a"..(n+f+1)
   return format(extension,a,a)
  else
   extension=gsub(extension,"%.%.%.",rep("%%s,",f-1).."%%s")
   local t={}
   for i=1,f do
    n=n+1
    t[i]="a"..n
   end
   return format(extension,unpack(t))
  end
 else
  extension=gsub(extension,"%%s",function()
   n=n+1
   return "a"..n
  end)
  return extension
 end
end
local builder=Cs { "start",
 start=(
  (
   P("%")/""*(
    V("!") 
+V("s")+V("q")+V("i")+V("d")+V("f")+V("F")+V("g")+V("G")+V("e")+V("E")+V("x")+V("X")+V("o")
+V("c")+V("C")+V("S") 
+V("Q") 
+V("n") 
+V("N") 
+V("k")
+V("r")+V("h")+V("H")+V("u")+V("U")+V("p")+V("b")+V("t")+V("T")+V("l")+V("L")+V("I")+V("w") 
+V("W") 
+V("a") 
+V("A") 
+V("j")+V("J") 
+V("m")+V("M") 
+V("z")
+V(">") 
+V("<")
   )+V("*")
  )*(endofstring+Carg(1))
 )^0,
 ["s"]=(prefix_any*P("s"))/format_s,
 ["q"]=(prefix_any*P("q"))/format_q,
 ["i"]=(prefix_any*P("i"))/format_i,
 ["d"]=(prefix_any*P("d"))/format_d,
 ["f"]=(prefix_any*P("f"))/format_f,
 ["F"]=(prefix_any*P("F"))/format_F,
 ["g"]=(prefix_any*P("g"))/format_g,
 ["G"]=(prefix_any*P("G"))/format_G,
 ["e"]=(prefix_any*P("e"))/format_e,
 ["E"]=(prefix_any*P("E"))/format_E,
 ["x"]=(prefix_any*P("x"))/format_x,
 ["X"]=(prefix_any*P("X"))/format_X,
 ["o"]=(prefix_any*P("o"))/format_o,
 ["S"]=(prefix_any*P("S"))/format_S,
 ["Q"]=(prefix_any*P("Q"))/format_Q,
 ["n"]=(prefix_any*P("n"))/format_n,
 ["N"]=(prefix_any*P("N"))/format_N,
 ["k"]=(prefix_sub*P("k"))/format_k,
 ["c"]=(prefix_any*P("c"))/format_c,
 ["C"]=(prefix_any*P("C"))/format_C,
 ["r"]=(prefix_any*P("r"))/format_r,
 ["h"]=(prefix_any*P("h"))/format_h,
 ["H"]=(prefix_any*P("H"))/format_H,
 ["u"]=(prefix_any*P("u"))/format_u,
 ["U"]=(prefix_any*P("U"))/format_U,
 ["p"]=(prefix_any*P("p"))/format_p,
 ["b"]=(prefix_any*P("b"))/format_b,
 ["t"]=(prefix_tab*P("t"))/format_t,
 ["T"]=(prefix_tab*P("T"))/format_T,
 ["l"]=(prefix_any*P("l"))/format_l,
 ["L"]=(prefix_any*P("L"))/format_L,
 ["I"]=(prefix_any*P("I"))/format_I,
 ["w"]=(prefix_any*P("w"))/format_w,
 ["W"]=(prefix_any*P("W"))/format_W,
 ["j"]=(prefix_any*P("j"))/format_j,
 ["J"]=(prefix_any*P("J"))/format_J,
 ["m"]=(prefix_any*P("m"))/format_m,
 ["M"]=(prefix_any*P("M"))/format_M,
 ["z"]=(prefix_any*P("z"))/format_z,
 ["a"]=(prefix_any*P("a"))/format_a,
 ["A"]=(prefix_any*P("A"))/format_A,
 ["<"]=(prefix_any*P("<"))/format_left,
 [">"]=(prefix_any*P(">"))/format_right,
 ["*"]=Cs(((1-P("%"))^1+P("%%")/"%%")^1)/format_rest,
 ["?"]=Cs(((1-P("%"))^1      )^1)/format_rest,
 ["!"]=Carg(2)*prefix_any*P("!")*C((1-P("!"))^1)*P("!")/format_extension,
}
local xx=setmetatable({},{ __index=function(t,k) local v=format("%02x",k) t[k]=v return v end })
local XX=setmetatable({},{ __index=function(t,k) local v=format("%02X",k) t[k]=v return v end })
local preset={
 ["%02x"]=function(n) return xx[n] end,
 ["%02X"]=function(n) return XX[n] end,
}
local direct=P("%")*(sign+space+period+digit)^0*S("sqidfgGeExXo")*endofstring/[[local format = string.format return function(str) return format("%0",str) end]]
local function make(t,str)
 local f=preset[str]
 if f then
  return f
 end
 local p=lpegmatch(direct,str)
 if p then
  f=loadstripped(p)()
 else
  n=0
  p=lpegmatch(builder,str,1,t._connector_,t._extensions_) 
  if n>0 then
   p=format(template,preamble,t._preamble_,arguments[n],p)
   f=loadstripped(p,t._environment_)() 
  else
   f=function() return str end
  end
 end
 t[str]=f
 return f
end
local function use(t,fmt,...)
 return t[fmt](...)
end
strings.formatters={}
function strings.formatters.new(noconcat)
 local e={} 
 for k,v in next,environment do
  e[k]=v
 end
 local t={
  _type_="formatter",
  _connector_=noconcat and "," or "..",
  _extensions_={},
  _preamble_="",
  _environment_=e,
 }
 setmetatable(t,{ __index=make,__call=use })
 return t
end
local formatters=strings.formatters.new() 
string.formatters=formatters 
string.formatter=function(str,...) return formatters[str](...) end 
local function add(t,name,template,preamble)
 if type(t)=="table" and t._type_=="formatter" then
  t._extensions_[name]=template or "%s"
  if type(preamble)=="string" then
   t._preamble_=preamble.."\n"..t._preamble_ 
  elseif type(preamble)=="table" then
   for k,v in next,preamble do
    t._environment_[k]=v
   end
  end
 end
end
strings.formatters.add=add
patterns.xmlescape=Cs((P("<")/"&lt;"+P(">")/"&gt;"+P("&")/"&amp;"+P('"')/"&quot;"+anything)^0)
patterns.texescape=Cs((C(S("#$%\\{}"))/"\\%1"+anything)^0)
patterns.luaescape=Cs(((1-S('"\n'))^1+P('"')/'\\"'+P('\n')/'\\n"')^0) 
patterns.luaquoted=Cs(Cc('"')*((1-S('"\n'))^1+P('"')/'\\"'+P('\n')/'\\n"')^0*Cc('"'))
add(formatters,"xml",[[lpegmatch(xmlescape,%s)]],{ xmlescape=patterns.xmlescape })
add(formatters,"tex",[[lpegmatch(texescape,%s)]],{ texescape=patterns.texescape })
add(formatters,"lua",[[lpegmatch(luaescape,%s)]],{ luaescape=patterns.luaescape })
local dquote=patterns.dquote 
local equote=patterns.escaped+dquote/'\\"'+1
local cquote=Cc('"')
local pattern=Cs(dquote*(equote-P(-2))^0*dquote)     
+Cs(cquote*(equote-space)^0*space*equote^0*cquote) 
function string.optionalquoted(str)
 return lpegmatch(pattern,str) or str
end
local pattern=Cs((newline/(os.newline or "\r")+1)^0)
function string.replacenewlines(str)
 return lpegmatch(pattern,str)
end
function strings.newcollector()
 local result,r={},0
 return
  function(fmt,str,...) 
   r=r+1
   result[r]=str==nil and fmt or formatters[fmt](str,...)
  end,
  function(connector) 
   if result then
    local str=concat(result,connector)
    result,r={},0
    return str
   end
  end
end
local f_16_16=formatters["%0.5N"]
function number.to16dot16(n)
 return f_16_16(n/65536.0)
end
if not string.explode then
 local tsplitat=lpeg.tsplitat
 local p_utf=patterns.utf8character
 local p_check=C(p_utf)*(P("+")*Cc(true))^0
 local p_split=Ct(C(p_utf)^0)
 local p_space=Ct((C(1-P(" ")^1)+P(" ")^1)^0)
 function string.explode(str,symbol)
  if symbol=="" then
   return lpegmatch(p_split,str)
  elseif symbol then
   local a,b=lpegmatch(p_check,symbol)
   if b then
    return lpegmatch(tsplitat(P(a)^1),str)
   else
    return lpegmatch(tsplitat(a),str)
   end
  else
   return lpegmatch(p_space,str)
  end
 end
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['util-fil']={
 version=1.001,
 comment="companion to luat-lib.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
local tonumber=tonumber
local byte=string.byte
local char=string.char
utilities=utilities or {}
local files={}
utilities.files=files
local zerobased={}
function files.open(filename,zb)
 local f=io.open(filename,"rb")
 if f then
  zerobased[f]=zb or false
 end
 return f
end
function files.close(f)
 zerobased[f]=nil
 f:close()
end
function files.size(f)
 local current=f:seek()
 local size=f:seek("end")
 f:seek("set",current)
 return size
end
files.getsize=files.size
function files.setposition(f,n)
 if zerobased[f] then
  f:seek("set",n)
 else
  f:seek("set",n-1)
 end
end
function files.getposition(f)
 if zerobased[f] then
  return f:seek()
 else
  return f:seek()+1
 end
end
function files.look(f,n,chars)
 local p=f:seek()
 local s=f:read(n)
 f:seek("set",p)
 if chars then
  return s
 else
  return byte(s,1,#s)
 end
end
function files.skip(f,n)
 if n==1 then
  f:read(n)
 else
  f:seek("set",f:seek()+n)
 end
end
function files.readbyte(f)
 return byte(f:read(1))
end
function files.readbytes(f,n)
 return byte(f:read(n),1,n)
end
function files.readbytetable(f,n)
 local s=f:read(n or 1)
 return { byte(s,1,#s) } 
end
function files.readchar(f)
 return f:read(1)
end
function files.readstring(f,n)
 return f:read(n or 1)
end
function files.readinteger1(f)  
 local n=byte(f:read(1))
 if n>=0x80 then
  return n-0x100
 else
  return n
 end
end
files.readcardinal1=files.readbyte  
files.readcardinal=files.readcardinal1
files.readinteger=files.readinteger1
files.readsignedbyte=files.readinteger1
function files.readcardinal2(f)
 local a,b=byte(f:read(2),1,2)
 return 0x100*a+b
end
function files.readcardinal2le(f)
 local b,a=byte(f:read(2),1,2)
 return 0x100*a+b
end
function files.readinteger2(f)
 local a,b=byte(f:read(2),1,2)
 if a>=0x80 then
  return 0x100*a+b-0x10000
 else
  return 0x100*a+b
 end
end
function files.readinteger2le(f)
 local b,a=byte(f:read(2),1,2)
 if a>=0x80 then
  return 0x100*a+b-0x10000
 else
  return 0x100*a+b
 end
end
function files.readcardinal3(f)
 local a,b,c=byte(f:read(3),1,3)
 return 0x10000*a+0x100*b+c
end
function files.readcardinal3le(f)
 local c,b,a=byte(f:read(3),1,3)
 return 0x10000*a+0x100*b+c
end
function files.readinteger3(f)
 local a,b,c=byte(f:read(3),1,3)
 if a>=0x80 then
  return 0x10000*a+0x100*b+c-0x1000000
 else
  return 0x10000*a+0x100*b+c
 end
end
function files.readinteger3le(f)
 local c,b,a=byte(f:read(3),1,3)
 if a>=0x80 then
  return 0x10000*a+0x100*b+c-0x1000000
 else
  return 0x10000*a+0x100*b+c
 end
end
function files.readcardinal4(f)
 local a,b,c,d=byte(f:read(4),1,4)
 return 0x1000000*a+0x10000*b+0x100*c+d
end
function files.readcardinal4le(f)
 local d,c,b,a=byte(f:read(4),1,4)
 return 0x1000000*a+0x10000*b+0x100*c+d
end
function files.readinteger4(f)
 local a,b,c,d=byte(f:read(4),1,4)
 if a>=0x80 then
  return 0x1000000*a+0x10000*b+0x100*c+d-0x100000000
 else
  return 0x1000000*a+0x10000*b+0x100*c+d
 end
end
function files.readinteger4le(f)
 local d,c,b,a=byte(f:read(4),1,4)
 if a>=0x80 then
  return 0x1000000*a+0x10000*b+0x100*c+d-0x100000000
 else
  return 0x1000000*a+0x10000*b+0x100*c+d
 end
end
function files.readfixed2(f)
 local a,b=byte(f:read(2),1,2)
 if a>=0x80 then
  tonumber((a-0x100).."."..b)
 else
  tonumber((a    ).."."..b)
 end
end
function files.readfixed4(f)
 local a,b,c,d=byte(f:read(4),1,4)
 if a>=0x80 then
  tonumber((0x100*a+b-0x10000).."."..(0x100*c+d))
 else
  tonumber((0x100*a+b    ).."."..(0x100*c+d))
 end
end
if bit32 then
 local extract=bit32.extract
 local band=bit32.band
 function files.read2dot14(f)
  local a,b=byte(f:read(2),1,2)
  if a>=0x80 then
   local n=-(0x100*a+b)
   return-(extract(n,14,2)+(band(n,0x3FFF)/16384.0))
  else
   local n=0x100*a+b
   return   (extract(n,14,2)+(band(n,0x3FFF)/16384.0))
  end
 end
end
function files.skipshort(f,n)
 f:read(2*(n or 1))
end
function files.skiplong(f,n)
 f:read(4*(n or 1))
end
if bit32 then
 local rshift=bit32.rshift
 function files.writecardinal2(f,n)
  local a=char(n%256)
  n=rshift(n,8)
  local b=char(n%256)
  f:write(b,a)
 end
 function files.writecardinal4(f,n)
  local a=char(n%256)
  n=rshift(n,8)
  local b=char(n%256)
  n=rshift(n,8)
  local c=char(n%256)
  n=rshift(n,8)
  local d=char(n%256)
  f:write(d,c,b,a)
 end
 function files.writecardinal2le(f,n)
  local a=char(n%256)
  n=rshift(n,8)
  local b=char(n%256)
  f:write(a,b)
 end
 function files.writecardinal4le(f,n)
  local a=char(n%256)
  n=rshift(n,8)
  local b=char(n%256)
  n=rshift(n,8)
  local c=char(n%256)
  n=rshift(n,8)
  local d=char(n%256)
  f:write(a,b,c,d)
 end
else
 local floor=math.floor
 function files.writecardinal2(f,n)
  local a=char(n%256)
  n=floor(n/256)
  local b=char(n%256)
  f:write(b,a)
 end
 function files.writecardinal4(f,n)
  local a=char(n%256)
  n=floor(n/256)
  local b=char(n%256)
  n=floor(n/256)
  local c=char(n%256)
  n=floor(n/256)
  local d=char(n%256)
  f:write(d,c,b,a)
 end
 function files.writecardinal2le(f,n)
  local a=char(n%256)
  n=floor(n/256)
  local b=char(n%256)
  f:write(a,b)
 end
 function files.writecardinal4le(f,n)
  local a=char(n%256)
  n=floor(n/256)
  local b=char(n%256)
  n=floor(n/256)
  local c=char(n%256)
  n=floor(n/256)
  local d=char(n%256)
  f:write(a,b,c,d)
 end
end
function files.writestring(f,s)
 f:write(char(byte(s,1,#s)))
end
function files.writebyte(f,b)
 f:write(char(b))
end
if fio and fio.readcardinal1 then
 files.readcardinal1=fio.readcardinal1
 files.readcardinal2=fio.readcardinal2
 files.readcardinal3=fio.readcardinal3
 files.readcardinal4=fio.readcardinal4
 files.readcardinal1le=fio.readcardinal1le or files.readcardinal1le
 files.readcardinal2le=fio.readcardinal2le or files.readcardinal2le
 files.readcardinal3le=fio.readcardinal3le or files.readcardinal3le
 files.readcardinal4le=fio.readcardinal4le or files.readcardinal4le
 files.readinteger1=fio.readinteger1
 files.readinteger2=fio.readinteger2
 files.readinteger3=fio.readinteger3
 files.readinteger4=fio.readinteger4
 files.readinteger1le=fio.readinteger1le or files.readinteger1le
 files.readinteger2le=fio.readinteger2le or files.readinteger2le
 files.readinteger3le=fio.readinteger3le or files.readinteger3le
 files.readinteger4le=fio.readinteger4le or files.readinteger4le
 files.readfixed2=fio.readfixed2
 files.readfixed4=fio.readfixed4
 files.read2dot14=fio.read2dot14
 files.setposition=fio.setposition
 files.getposition=fio.getposition
 files.readbyte=files.readcardinal1
 files.readsignedbyte=files.readinteger1
 files.readcardinal=files.readcardinal1
 files.readinteger=files.readinteger1
 local skipposition=fio.skipposition
 files.skipposition=skipposition
 files.readbytes=fio.readbytes
 files.readbytetable=fio.readbytetable
 function files.skipshort(f,n)
  skipposition(f,2*(n or 1))
 end
 function files.skiplong(f,n)
  skipposition(f,4*(n or 1))
 end
end
if fio and fio.writecardinal1 then
 files.writecardinal1=fio.writecardinal1
 files.writecardinal2=fio.writecardinal2
 files.writecardinal3=fio.writecardinal3
 files.writecardinal4=fio.writecardinal4
 files.writecardinal1le=fio.writecardinal1le
 files.writecardinal2le=fio.writecardinal2le
 files.writecardinal3le=fio.writecardinal3le
 files.writecardinal4le=fio.writecardinal4le
 files.writeinteger1=fio.writeinteger1 or fio.writecardinal1
 files.writeinteger2=fio.writeinteger2 or fio.writecardinal2
 files.writeinteger3=fio.writeinteger3 or fio.writecardinal3
 files.writeinteger4=fio.writeinteger4 or fio.writecardinal4
 files.writeinteger1le=files.writeinteger1le or fio.writecardinal1le
 files.writeinteger2le=files.writeinteger2le or fio.writecardinal2le
 files.writeinteger3le=files.writeinteger3le or fio.writecardinal3le
 files.writeinteger4le=files.writeinteger4le or fio.writecardinal4le
end
if fio and fio.readcardinaltable then
 files.readcardinaltable=fio.readcardinaltable
 files.readintegertable=fio.readintegertable
else
 local readcardinal1=files.readcardinal1
 local readcardinal2=files.readcardinal2
 local readcardinal3=files.readcardinal3
 local readcardinal4=files.readcardinal4
 function files.readcardinaltable(f,n,b)
  local t={}
   if b==1 then for i=1,n do t[i]=readcardinal1(f) end
  elseif b==2 then for i=1,n do t[i]=readcardinal2(f) end
  elseif b==3 then for i=1,n do t[i]=readcardinal3(f) end
  elseif b==4 then for i=1,n do t[i]=readcardinal4(f) end end
  return t
 end
 local readinteger1=files.readinteger1
 local readinteger2=files.readinteger2
 local readinteger3=files.readinteger3
 local readinteger4=files.readinteger4
 function files.readintegertable(f,n,b)
  local t={}
   if b==1 then for i=1,n do t[i]=readinteger1(f) end
  elseif b==2 then for i=1,n do t[i]=readinteger2(f) end
  elseif b==3 then for i=1,n do t[i]=readinteger3(f) end
  elseif b==4 then for i=1,n do t[i]=readinteger4(f) end end
  return t
 end
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['luat-basics-gen']={
 version=1.100,
 comment="companion to luatex-*.tex",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
if context then
--removed

end
local match,gmatch,gsub,lower=string.match,string.gmatch,string.gsub,string.lower
local formatters,split,format,dump=string.formatters,string.split,string.format,string.dump
local loadfile,type=loadfile,type
local setmetatable,getmetatable,collectgarbage=setmetatable,getmetatable,collectgarbage
local floor=math.floor
local dummyfunction=function()
end
local dummyreporter=function(c)
 return function(f,...)
  local r=texio.reporter or texio.write_nl
  if f then
   r(c.." : "..(formatters or format)(f,...))
  else
   r("")
  end
 end
end
local dummyreport=function(c,f,...)
 local r=texio.reporter or texio.write_nl
 if f then
  r(c.." : "..(formatters or format)(f,...))
 else
  r("")
 end
end
statistics={
 register=dummyfunction,
 starttiming=dummyfunction,
 stoptiming=dummyfunction,
 elapsedtime=nil,
}
directives={
 register=dummyfunction,
 enable=dummyfunction,
 disable=dummyfunction,
}
trackers={
 register=dummyfunction,
 enable=dummyfunction,
 disable=dummyfunction,
}
experiments={
 register=dummyfunction,
 enable=dummyfunction,
 disable=dummyfunction,
}
storage={ 
 register=dummyfunction,
 shared={},
}
logs={
 new=dummyreporter,
 reporter=dummyreporter,
 messenger=dummyreporter,
 report=dummyreport,
}
callbacks={
 register=function(n,f)
  return callback.register(n,f)
 end,
}
utilities=utilities or {}
utilities.storage=utilities.storage or {
 allocate=function(t)
  return t or {}
 end,
 mark=function(t)
  return t or {}
 end,
}
utilities.parsers=utilities.parsers or {
 settings_to_array=function(s)
  return split(s,",")
 end,
 settings_to_hash=function(s)
  local t={}
  for k,v in gmatch(s,"([^%s,=]+)=([^%s,]+)") do
   t[k]=v
  end
  return t
 end,
 settings_to_hash_colon_too=function(s)
  local t={}
  for k,v in gmatch(s,"([^%s,=:]+)[=:]([^%s,]+)") do
   t[k]=v
  end
  return t
 end,
}
characters=characters or {
 data={}
}
texconfig.kpse_init=true
resolvers=resolvers or {} 
local remapper={
 otf="opentype fonts",
 ttf="truetype fonts",
 ttc="truetype fonts",
 cid="cid maps",
 cidmap="cid maps",
 pfb="type1 fonts",
 afm="afm",
 enc="enc files",
 lua="tex",
}
function resolvers.findfile(name,fileformat)
 name=gsub(name,"\\","/")
 if not fileformat or fileformat=="" then
  fileformat=file.suffix(name)
  if fileformat=="" then
   fileformat="tex"
  end
 end
 fileformat=lower(fileformat)
 fileformat=remapper[fileformat] or fileformat
 local found=kpse.find_file(name,fileformat)
 if not found or found=="" then
  found=kpse.find_file(name,"other text files")
 end
 return found
end
resolvers.findbinfile=resolvers.findfile
function resolvers.loadbinfile(filename,filetype)
 local data=io.loaddata(filename)
 return true,data,#data
end
function resolvers.resolve(s)
 return s
end
function resolvers.unresolve(s)
 return s
end
caches={}
local writable=nil
local readables={}
local usingjit=jit
if not caches.namespace or caches.namespace=="" or caches.namespace=="context" then
 caches.namespace='generic'
end
do
 local cachepaths=kpse.expand_var('$TEXMFCACHE') or ""
 if cachepaths=="" or cachepaths=="$TEXMFCACHE" then
  cachepaths=kpse.expand_var('$TEXMFVAR') or ""
 end
 if cachepaths=="" or cachepaths=="$TEXMFVAR" then
  cachepaths=kpse.expand_var('$VARTEXMF') or ""
 end
 if cachepaths=="" then
  local fallbacks={ "TMPDIR","TEMPDIR","TMP","TEMP","HOME","HOMEPATH" }
  for i=1,#fallbacks do
   cachepaths=os.getenv(fallbacks[i]) or ""
   if cachepath~="" and lfs.isdir(cachepath) then
    break
   end
  end
 end
 if cachepaths=="" then
  cachepaths="."
 end
 cachepaths=split(cachepaths,os.type=="windows" and ";" or ":")
 for i=1,#cachepaths do
  local cachepath=cachepaths[i]
  if not lfs.isdir(cachepath) then
   lfs.mkdirs(cachepath) 
   if lfs.isdir(cachepath) then
    logs.report("system","creating cache path '%s'",cachepath)
   end
  end
  if file.is_writable(cachepath) then
   writable=file.join(cachepath,"luatex-cache")
   lfs.mkdir(writable)
   writable=file.join(writable,caches.namespace)
   lfs.mkdir(writable)
   break
  end
 end
 for i=1,#cachepaths do
  if file.is_readable(cachepaths[i]) then
   readables[#readables+1]=file.join(cachepaths[i],"luatex-cache",caches.namespace)
  end
 end
 if not writable then
  logs.report("system","no writeable cache path, quiting")
  os.exit()
 elseif #readables==0 then
  logs.report("system","no readable cache path, quiting")
  os.exit()
 elseif #readables==1 and readables[1]==writable then
  logs.report("system","using cache '%s'",writable)
 else
  logs.report("system","using write cache '%s'",writable)
  logs.report("system","using read cache '%s'",table.concat(readables," "))
 end
end
function caches.getwritablepath(category,subcategory)
 local path=file.join(writable,category)
 lfs.mkdir(path)
 path=file.join(path,subcategory)
 lfs.mkdir(path)
 return path
end
function caches.getreadablepaths(category,subcategory)
 local t={}
 for i=1,#readables do
  t[i]=file.join(readables[i],category,subcategory)
 end
 return t
end
local function makefullname(path,name)
 if path and path~="" then
  return file.addsuffix(file.join(path,name),"lua"),file.addsuffix(file.join(path,name),usingjit and "lub" or "luc")
 end
end
function caches.is_writable(path,name)
 local fullname=makefullname(path,name)
 return fullname and file.is_writable(fullname)
end
function caches.loaddata(readables,name,writable)
 for i=1,#readables do
  local path=readables[i]
  local loader=false
  local luaname,lucname=makefullname(path,name)
  if lfs.isfile(lucname) then
   logs.report("system","loading luc file '%s'",lucname)
   loader=loadfile(lucname)
  end
  if not loader and lfs.isfile(luaname) then
   local luacrap,lucname=makefullname(writable,name)
   logs.report("system","compiling luc file '%s'",lucname)
   if lfs.isfile(lucname) then
    loader=loadfile(lucname)
   end
   caches.compile(data,luaname,lucname)
   if lfs.isfile(lucname) then
    logs.report("system","loading luc file '%s'",lucname)
    loader=loadfile(lucname)
   else
    logs.report("system","error in loading luc file '%s'",lucname)
   end
   if not loader then
    logs.report("system","loading lua file '%s'",luaname)
    loader=loadfile(luaname)
   else
    logs.report("system","error in loading lua file '%s'",luaname)
   end
  end
  if loader then
   loader=loader()
   collectgarbage("step")
   return loader
  end
 end
 return false
end
function caches.savedata(path,name,data)
 local luaname,lucname=makefullname(path,name)
 if luaname then
  logs.report("system","saving lua file '%s'",luaname)
  table.tofile(luaname,data,true)
  if lucname and type(caches.compile)=="function" then
   os.remove(lucname) 
   logs.report("system","saving luc file '%s'",lucname)
   caches.compile(data,luaname,lucname)
  end
 end
end
function caches.compile(data,luaname,lucname)
 local d=io.loaddata(luaname)
 if not d or d=="" then
  d=table.serialize(data,true) 
 end
 if d and d~="" then
  local f=io.open(lucname,'wb')
  if f then
   local s=loadstring(d)
   if s then
    f:write(dump(s,true))
   end
   f:close()
  end
 end
end
function table.setmetatableindex(t,f)
 if type(t)~="table" then
  f,t=t,{}
 end
 local m=getmetatable(t)
 if f=="table" then
  f=function(t,k) local v={} t[k]=v return v end
 end
 if m then
  m.__index=f
 else
  setmetatable(t,{ __index=f })
 end
 return t
end
function table.makeweak(t)
 local m=getmetatable(t)
 if m then
  m.__mode="v"
 else
  setmetatable(t,{ __mode="v" })
 end
 return t
end
arguments={}
if arg then
 for i=1,#arg do
  local k,v=match(arg[i],"^%-%-([^=]+)=?(.-)$")
  if k and v then
   arguments[k]=v
  end
 end
end
if not number.idiv then
 function number.idiv(i,d)
  return floor(i/d) 
 end
end
local u=unicode and unicode.utf8
if u then
 utf.lower=u.lower
 utf.upper=u.upper
 utf.char=u.char
 utf.byte=u.byte
 utf.len=u.len
 if lpeg.setutfcasers then
  lpeg.setutfcasers(u.lower,u.upper)
 end
 local bytepairs=string.bytepairs
 local utfchar=utf.char
 local concat=table.concat
 function utf.utf16_to_utf8_be(s)
  if not s then
   return nil
  elseif s=="" then
   return ""
  end
  local result,r,more={},0,0
  for left,right in bytepairs(s) do
   if right then
    local now=256*left+right
    if more>0 then
     now=(more-0xD800)*0x400+(now-0xDC00)+0x10000
     more=0
     r=r+1
     result[r]=utfchar(now)
    elseif now>=0xD800 and now<=0xDBFF then
     more=now
    else
     r=r+1
     result[r]=utfchar(now)
    end
   end
  end
  return concat(result)
 end
 local characters=string.utfcharacters
 function utf.split(str)
  local t,n={},0
  for s in characters(str) do
   n=n+1
   t[n]=s
  end
  return t
 end
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['data-con']={
 version=1.100,
 comment="companion to luat-lib.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
local setmetatable=setmetatable
local format,lower,gsub=string.format,string.lower,string.gsub
local trace_cache=false  trackers.register("resolvers.cache",function(v) trace_cache=v end)
local trace_containers=false  trackers.register("resolvers.containers",function(v) trace_containers=v end)
local trace_storage=false  trackers.register("resolvers.storage",function(v) trace_storage=v end)
containers=containers or {}
local containers=containers
containers.usecache=true
local getwritablepath=caches.getwritablepath
local getreadablepaths=caches.getreadablepaths
local cacheiswritable=caches.is_writable
local loaddatafromcache=caches.loaddata
local savedataincache=caches.savedata
local report_containers=logs.reporter("resolvers","containers")
local allocated={}
local mt={
 __index=function(t,k)
  if k=="writable" then
   local writable=getwritablepath(t.category,t.subcategory) or { "." }
   t.writable=writable
   return writable
  elseif k=="readables" then
   local readables=getreadablepaths(t.category,t.subcategory) or { "." }
   t.readables=readables
   return readables
  end
 end,
 __storage__=true
}
function containers.define(category,subcategory,version,enabled)
 if category and subcategory then
  local c=allocated[category]
  if not c then
   c={}
   allocated[category]=c
  end
  local s=c[subcategory]
  if not s then
   s={
    category=category,
    subcategory=subcategory,
    storage={},
    enabled=enabled,
    version=version or math.pi,
    trace=false,
   }
   setmetatable(s,mt)
   c[subcategory]=s
  end
  return s
 end
end
function containers.is_usable(container,name)
 return container.enabled and caches and cacheiswritable(container.writable,name)
end
function containers.is_valid(container,name)
 if name and name~="" then
  local storage=container.storage[name]
  return storage and storage.cache_version==container.version
 else
  return false
 end
end
function containers.read(container,name)
 local storage=container.storage
 local stored=storage[name]
 if not stored and container.enabled and caches and containers.usecache then
  stored=loaddatafromcache(container.readables,name,container.writable)
  if stored and stored.cache_version==container.version then
   if trace_cache or trace_containers then
    report_containers("action %a, category %a, name %a","load",container.subcategory,name)
   end
  else
   stored=nil
  end
  storage[name]=stored
 elseif stored then
  if trace_cache or trace_containers then
   report_containers("action %a, category %a, name %a","reuse",container.subcategory,name)
  end
 end
 return stored
end
function containers.write(container,name,data,fast)
 if data then
  data.cache_version=container.version
  if container.enabled and caches then
   local unique=data.unique
   local shared=data.shared
   data.unique=nil
   data.shared=nil
   savedataincache(container.writable,name,data,fast)
   if trace_cache or trace_containers then
    report_containers("action %a, category %a, name %a","save",container.subcategory,name)
   end
   data.unique=unique
   data.shared=shared
  end
  if trace_cache or trace_containers then
   report_containers("action %a, category %a, name %a","store",container.subcategory,name)
  end
  container.storage[name]=data
 end
 return data
end
function containers.content(container,name)
 return container.storage[name]
end
function containers.cleanname(name)
 return (gsub(lower(name),"[^%w\128-\255]+","-")) 
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['luatex-fonts-nod']={
 version=1.001,
 comment="companion to luatex-fonts.lua",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
if context then
--removed

end
if tex.attribute[0]~=0 then
 texio.write_nl("log","!")
 texio.write_nl("log","! Attribute 0 is reserved for ConTeXt's font feature management and has to be")
 texio.write_nl("log","! set to zero. Also, some attributes in the range 1-255 are used for special")
 texio.write_nl("log","! purposes so setting them at the TeX end might break the font handler.")
 texio.write_nl("log","!")
 tex.attribute[0]=0 
end
attributes=attributes or {}
attributes.unsetvalue=-0x7FFFFFFF
local numbers,last={},127
attributes.private=attributes.private or function(name)
 local number=numbers[name]
 if not number then
  if last<255 then
   last=last+1
  end
  number=last
  numbers[name]=number
 end
 return number
end
nodes={}
nodes.handlers={}
local nodecodes={}
local glyphcodes=node.subtypes("glyph")
local disccodes=node.subtypes("disc")
for k,v in next,node.types() do
 v=string.gsub(v,"_","")
 nodecodes[k]=v
 nodecodes[v]=k
end
for k,v in next,glyphcodes do
 glyphcodes[v]=k
end
for k,v in next,disccodes do
 disccodes[v]=k
end
nodes.nodecodes=nodecodes
nodes.glyphcodes=glyphcodes
nodes.disccodes=disccodes
nodes.handlers.protectglyphs=node.protect_glyphs   
nodes.handlers.unprotectglyphs=node.unprotect_glyphs
local direct=node.direct
local nuts={}
nodes.nuts=nuts
local tonode=direct.tonode
local tonut=direct.todirect
nodes.tonode=tonode
nodes.tonut=tonut
nuts.tonode=tonode
nuts.tonut=tonut
nuts.getattr=direct.get_attribute
nuts.getboth=direct.getboth
nuts.getchar=direct.getchar
nuts.getdirection=direct.getdirection
nuts.getdisc=direct.getdisc
nuts.getreplace=direct.getreplace
nuts.getfield=direct.getfield
nuts.getfont=direct.getfont
nuts.getid=direct.getid
nuts.getkern=direct.getkern
nuts.getlist=direct.getlist
nuts.getnext=direct.getnext
nuts.getoffsets=direct.getoffsets
nuts.getprev=direct.getprev
nuts.getsubtype=direct.getsubtype
nuts.getwidth=direct.getwidth
nuts.setattr=direct.setfield
nuts.setboth=direct.setboth
nuts.setchar=direct.setchar
nuts.setcomponents=direct.setcomponents
nuts.setdirection=direct.setdirection
nuts.setdisc=direct.setdisc
nuts.setreplace=direct.setreplace
nuts.setfield=setfield
nuts.setkern=direct.setkern
nuts.setlink=direct.setlink
nuts.setlist=direct.setlist
nuts.setnext=direct.setnext
nuts.setoffsets=direct.setoffsets
nuts.setprev=direct.setprev
nuts.setsplit=direct.setsplit
nuts.setsubtype=direct.setsubtype
nuts.setwidth=direct.setwidth
nuts.getglyphdata=nuts.getattr
nuts.setglyphdata=nuts.setattr
nuts.ischar=direct.is_char
nuts.isglyph=direct.is_glyph
nuts.copy=direct.copy
nuts.copy_list=direct.copy_list
nuts.copy_node=direct.copy
nuts.end_of_math=direct.end_of_math
nuts.flush=direct.flush
nuts.flush_list=direct.flush_list
nuts.flush_node=direct.flush_node
nuts.free=direct.free
nuts.insert_after=direct.insert_after
nuts.insert_before=direct.insert_before
nuts.is_node=direct.is_node
nuts.kerning=direct.kerning
nuts.ligaturing=direct.ligaturing
nuts.new=direct.new
nuts.remove=direct.remove
nuts.tail=direct.tail
nuts.traverse=direct.traverse
nuts.traverse_char=direct.traverse_char
nuts.traverse_glyph=direct.traverse_glyph
nuts.traverse_id=direct.traverse_id
local propertydata=direct.get_properties_table()
nodes.properties={ data=propertydata }
if direct.set_properties_mode then
 direct.set_properties_mode(true,true)
 function direct.set_properties_mode() end
end
nuts.getprop=function(n,k)
 local p=propertydata[n]
 if p then
  return p[k]
 end
end
nuts.setprop=function(n,k,v)
 if v then
  local p=propertydata[n]
  if p then
   p[k]=v
  else
   propertydata[n]={ [k]=v }
  end
 end
end
nodes.setprop=nodes.setproperty
nodes.getprop=nodes.getproperty
local setprev=nuts.setprev
local setnext=nuts.setnext
local getnext=nuts.getnext
local setlink=nuts.setlink
local getfield=nuts.getfield
local setfield=nuts.setfield
local getsubtype=nuts.getsubtype
local isglyph=nuts.isglyph
local find_tail=nuts.tail
local flush_list=nuts.flush_list
local flush_node=nuts.flush_node
local traverse_id=nuts.traverse_id
local copy_node=nuts.copy_node
local glyph_code=nodes.nodecodes.glyph
local ligature_code=nodes.glyphcodes.ligature
do
 local get_components=node.direct.getcomponents
 local set_components=node.direct.setcomponents
 local function copy_no_components(g,copyinjection)
  local components=get_components(g)
  if components then
   set_components(g)
   local n=copy_node(g)
   if copyinjection then
    copyinjection(n,g)
   end
   set_components(g,components)
   return n
  else
   local n=copy_node(g)
   if copyinjection then
    copyinjection(n,g)
   end
   return n
  end
 end
 local function copy_only_glyphs(current)
  local head=nil
  local previous=nil
  for n in traverse_id(glyph_code,current) do
   n=copy_node(n)
   if head then
    setlink(previous,n)
   else
    head=n
   end
   previous=n
  end
  return head
 end
 local function count_components(start,marks)
  local char=isglyph(start)
  if char then
   if getsubtype(start)==ligature_code then
    local n=0
    local components=get_components(start)
    while components do
     n=n+count_components(components,marks)
     components=getnext(components)
    end
    return n
   elseif not marks[char] then
    return 1
   end
  end
  return 0
 end
 nuts.set_components=set_components
 nuts.get_components=get_components
 nuts.copy_only_glyphs=copy_only_glyphs
 nuts.copy_no_components=copy_no_components
 nuts.count_components=count_components
end
nuts.uses_font=direct.uses_font
do
 local dummy=tonut(node.new("glyph"))
 nuts.traversers={
  glyph=nuts.traverse_id(nodecodes.glyph,dummy),
  glue=nuts.traverse_id(nodecodes.glue,dummy),
  disc=nuts.traverse_id(nodecodes.disc,dummy),
  boundary=nuts.traverse_id(nodecodes.boundary,dummy),
  char=nuts.traverse_char(dummy),
  node=nuts.traverse(dummy),
 }
end
if not nuts.setreplace then
 local getdisc=nuts.getdisc
 local setfield=nuts.setfield
 function nuts.getreplace(n)
  local _,_,h,_,_,t=getdisc(n,true)
  return h,t
 end
 function nuts.setreplace(n,h)
  setfield(n,"replace",h)
 end
end
do
 local getsubtype=nuts.getsubtype
 function nuts.start_of_par(n)
  local s=getsubtype(n)
  return s==0 or s==2 
 end
end

end -- closure

do -- begin closure to overcome local limits and interference


characters=characters or {}
characters.blockrange={}
characters.classifiers={
 [768]=5,
 [769]=5,
 [770]=5,
 [771]=5,
 [772]=5,
 [773]=5,
 [774]=5,
 [775]=5,
 [776]=5,
 [777]=5,
 [778]=5,
 [779]=5,
 [780]=5,
 [781]=5,
 [782]=5,
 [783]=5,
 [784]=5,
 [785]=5,
 [786]=5,
 [787]=5,
 [788]=5,
 [789]=5,
 [790]=5,
 [791]=5,
 [792]=5,
 [793]=5,
 [794]=5,
 [795]=5,
 [796]=5,
 [797]=5,
 [798]=5,
 [799]=5,
 [800]=5,
 [801]=5,
 [802]=5,
 [803]=5,
 [804]=5,
 [805]=5,
 [806]=5,
 [807]=5,
 [808]=5,
 [809]=5,
 [810]=5,
 [811]=5,
 [812]=5,
 [813]=5,
 [814]=5,
 [815]=5,
 [816]=5,
 [817]=5,
 [818]=5,
 [819]=5,
 [820]=5,
 [821]=5,
 [822]=5,
 [823]=5,
 [824]=5,
 [825]=5,
 [826]=5,
 [827]=5,
 [828]=5,
 [829]=5,
 [830]=5,
 [831]=5,
 [832]=5,
 [833]=5,
 [834]=5,
 [835]=5,
 [836]=5,
 [837]=5,
 [838]=5,
 [839]=5,
 [840]=5,
 [841]=5,
 [842]=5,
 [843]=5,
 [844]=5,
 [845]=5,
 [846]=5,
 [847]=5,
 [848]=5,
 [849]=5,
 [850]=5,
 [851]=5,
 [852]=5,
 [853]=5,
 [854]=5,
 [855]=5,
 [856]=5,
 [857]=5,
 [858]=5,
 [859]=5,
 [860]=5,
 [861]=5,
 [862]=5,
 [863]=5,
 [864]=5,
 [865]=5,
 [866]=5,
 [867]=5,
 [868]=5,
 [869]=5,
 [870]=5,
 [871]=5,
 [872]=5,
 [873]=5,
 [874]=5,
 [875]=5,
 [876]=5,
 [877]=5,
 [878]=5,
 [879]=5,
 [1155]=5,
 [1156]=5,
 [1157]=5,
 [1158]=5,
 [1159]=5,
 [1425]=5,
 [1426]=5,
 [1427]=5,
 [1428]=5,
 [1429]=5,
 [1430]=5,
 [1431]=5,
 [1432]=5,
 [1433]=5,
 [1434]=5,
 [1435]=5,
 [1436]=5,
 [1437]=5,
 [1438]=5,
 [1439]=5,
 [1440]=5,
 [1441]=5,
 [1442]=5,
 [1443]=5,
 [1444]=5,
 [1445]=5,
 [1446]=5,
 [1447]=5,
 [1448]=5,
 [1449]=5,
 [1450]=5,
 [1451]=5,
 [1452]=5,
 [1453]=5,
 [1454]=5,
 [1455]=5,
 [1456]=5,
 [1457]=5,
 [1458]=5,
 [1459]=5,
 [1460]=5,
 [1461]=5,
 [1462]=5,
 [1463]=5,
 [1464]=5,
 [1465]=5,
 [1466]=5,
 [1467]=5,
 [1468]=5,
 [1469]=5,
 [1471]=5,
 [1473]=5,
 [1474]=5,
 [1476]=5,
 [1477]=5,
 [1479]=5,
 [1536]=4,
 [1537]=4,
 [1538]=4,
 [1539]=4,
 [1540]=4,
 [1541]=4,
 [1542]=6,
 [1543]=6,
 [1544]=4,
 [1545]=6,
 [1546]=6,
 [1547]=4,
 [1548]=6,
 [1549]=6,
 [1550]=6,
 [1551]=6,
 [1552]=5,
 [1553]=5,
 [1554]=5,
 [1555]=5,
 [1556]=5,
 [1557]=5,
 [1558]=5,
 [1559]=5,
 [1560]=5,
 [1561]=5,
 [1562]=5,
 [1563]=6,
 [1564]=6,
 [1566]=6,
 [1567]=6,
 [1568]=2,
 [1569]=4,
 [1570]=3,
 [1571]=3,
 [1572]=3,
 [1573]=3,
 [1574]=2,
 [1575]=3,
 [1576]=2,
 [1577]=3,
 [1578]=2,
 [1579]=2,
 [1580]=2,
 [1581]=2,
 [1582]=2,
 [1583]=3,
 [1584]=3,
 [1585]=3,
 [1586]=3,
 [1587]=2,
 [1588]=2,
 [1589]=2,
 [1590]=2,
 [1591]=2,
 [1592]=2,
 [1593]=2,
 [1594]=2,
 [1595]=2,
 [1596]=2,
 [1597]=2,
 [1598]=2,
 [1599]=2,
 [1600]=2,
 [1601]=2,
 [1602]=2,
 [1603]=2,
 [1604]=2,
 [1605]=2,
 [1606]=2,
 [1607]=2,
 [1608]=3,
 [1609]=2,
 [1610]=2,
 [1611]=5,
 [1612]=5,
 [1613]=5,
 [1614]=5,
 [1615]=5,
 [1616]=5,
 [1617]=5,
 [1618]=5,
 [1619]=5,
 [1620]=5,
 [1621]=5,
 [1622]=5,
 [1623]=5,
 [1624]=5,
 [1625]=5,
 [1626]=5,
 [1627]=5,
 [1628]=5,
 [1629]=5,
 [1630]=5,
 [1631]=5,
 [1632]=6,
 [1633]=6,
 [1634]=6,
 [1635]=6,
 [1636]=6,
 [1637]=6,
 [1638]=6,
 [1639]=6,
 [1640]=6,
 [1641]=6,
 [1642]=6,
 [1643]=6,
 [1644]=6,
 [1645]=6,
 [1646]=2,
 [1647]=2,
 [1648]=5,
 [1649]=3,
 [1650]=3,
 [1651]=3,
 [1652]=4,
 [1653]=3,
 [1654]=3,
 [1655]=3,
 [1656]=2,
 [1657]=2,
 [1658]=2,
 [1659]=2,
 [1660]=2,
 [1661]=2,
 [1662]=2,
 [1663]=2,
 [1664]=2,
 [1665]=2,
 [1666]=2,
 [1667]=2,
 [1668]=2,
 [1669]=2,
 [1670]=2,
 [1671]=2,
 [1672]=3,
 [1673]=3,
 [1674]=3,
 [1675]=3,
 [1676]=3,
 [1677]=3,
 [1678]=3,
 [1679]=3,
 [1680]=3,
 [1681]=3,
 [1682]=3,
 [1683]=3,
 [1684]=3,
 [1685]=3,
 [1686]=3,
 [1687]=3,
 [1688]=3,
 [1689]=3,
 [1690]=2,
 [1691]=2,
 [1692]=2,
 [1693]=2,
 [1694]=2,
 [1695]=2,
 [1696]=2,
 [1697]=2,
 [1698]=2,
 [1699]=2,
 [1700]=2,
 [1701]=2,
 [1702]=2,
 [1703]=2,
 [1704]=2,
 [1705]=2,
 [1706]=2,
 [1707]=2,
 [1708]=2,
 [1709]=2,
 [1710]=2,
 [1711]=2,
 [1712]=2,
 [1713]=2,
 [1714]=2,
 [1715]=2,
 [1716]=2,
 [1717]=2,
 [1718]=2,
 [1719]=2,
 [1720]=2,
 [1721]=2,
 [1722]=2,
 [1723]=2,
 [1724]=2,
 [1725]=2,
 [1726]=2,
 [1727]=2,
 [1728]=3,
 [1729]=2,
 [1730]=2,
 [1731]=3,
 [1732]=3,
 [1733]=3,
 [1734]=3,
 [1735]=3,
 [1736]=3,
 [1737]=3,
 [1738]=3,
 [1739]=3,
 [1740]=2,
 [1741]=3,
 [1742]=2,
 [1743]=3,
 [1744]=2,
 [1745]=2,
 [1746]=3,
 [1747]=3,
 [1748]=6,
 [1749]=3,
 [1750]=5,
 [1751]=5,
 [1752]=5,
 [1753]=5,
 [1754]=5,
 [1755]=5,
 [1756]=5,
 [1757]=4,
 [1758]=6,
 [1759]=5,
 [1760]=5,
 [1761]=5,
 [1762]=5,
 [1763]=5,
 [1764]=5,
 [1765]=6,
 [1766]=6,
 [1767]=5,
 [1768]=5,
 [1769]=6,
 [1770]=5,
 [1771]=5,
 [1772]=5,
 [1773]=5,
 [1774]=3,
 [1775]=3,
 [1776]=6,
 [1777]=6,
 [1778]=6,
 [1779]=6,
 [1780]=6,
 [1781]=6,
 [1782]=6,
 [1783]=6,
 [1784]=6,
 [1785]=6,
 [1786]=2,
 [1787]=2,
 [1788]=2,
 [1789]=6,
 [1790]=6,
 [1791]=2,
 [1792]=6,
 [1793]=6,
 [1794]=6,
 [1795]=6,
 [1796]=6,
 [1797]=6,
 [1798]=6,
 [1799]=6,
 [1800]=6,
 [1801]=6,
 [1802]=6,
 [1803]=6,
 [1804]=6,
 [1805]=6,
 [1808]=3,
 [1809]=5,
 [1810]=2,
 [1811]=2,
 [1812]=2,
 [1813]=3,
 [1814]=3,
 [1815]=3,
 [1816]=3,
 [1817]=3,
 [1818]=2,
 [1819]=2,
 [1820]=2,
 [1821]=2,
 [1822]=3,
 [1823]=2,
 [1824]=2,
 [1825]=2,
 [1826]=2,
 [1827]=2,
 [1828]=2,
 [1829]=2,
 [1830]=2,
 [1831]=2,
 [1832]=3,
 [1833]=2,
 [1834]=3,
 [1835]=2,
 [1836]=3,
 [1837]=2,
 [1838]=2,
 [1839]=3,
 [1840]=5,
 [1841]=5,
 [1842]=5,
 [1843]=5,
 [1844]=5,
 [1845]=5,
 [1846]=5,
 [1847]=5,
 [1848]=5,
 [1849]=5,
 [1850]=5,
 [1851]=5,
 [1852]=5,
 [1853]=5,
 [1854]=5,
 [1855]=5,
 [1856]=5,
 [1857]=5,
 [1858]=5,
 [1859]=5,
 [1860]=5,
 [1861]=5,
 [1862]=5,
 [1863]=5,
 [1864]=5,
 [1865]=5,
 [1866]=5,
 [1869]=3,
 [1870]=2,
 [1871]=2,
 [1872]=2,
 [1873]=2,
 [1874]=2,
 [1875]=2,
 [1876]=2,
 [1877]=2,
 [1878]=2,
 [1879]=2,
 [1880]=2,
 [1881]=3,
 [1882]=3,
 [1883]=3,
 [1884]=2,
 [1885]=2,
 [1886]=2,
 [1887]=2,
 [1888]=2,
 [1889]=2,
 [1890]=2,
 [1891]=2,
 [1892]=2,
 [1893]=2,
 [1894]=2,
 [1895]=2,
 [1896]=2,
 [1897]=2,
 [1898]=2,
 [1899]=3,
 [1900]=3,
 [1901]=2,
 [1902]=2,
 [1903]=2,
 [1904]=2,
 [1905]=3,
 [1906]=2,
 [1907]=3,
 [1908]=3,
 [1909]=2,
 [1910]=2,
 [1911]=2,
 [1912]=3,
 [1913]=3,
 [1914]=2,
 [1915]=2,
 [1916]=2,
 [1917]=2,
 [1918]=2,
 [1919]=2,
 [1958]=5,
 [1959]=5,
 [1960]=5,
 [1961]=5,
 [1962]=5,
 [1963]=5,
 [1964]=5,
 [1965]=5,
 [1966]=5,
 [1967]=5,
 [1968]=5,
 [1984]=6,
 [1985]=6,
 [1986]=6,
 [1987]=6,
 [1988]=6,
 [1989]=6,
 [1990]=6,
 [1991]=6,
 [1992]=6,
 [1993]=6,
 [1994]=2,
 [1995]=2,
 [1996]=2,
 [1997]=2,
 [1998]=2,
 [1999]=2,
 [2000]=2,
 [2001]=2,
 [2002]=2,
 [2003]=2,
 [2004]=2,
 [2005]=2,
 [2006]=2,
 [2007]=2,
 [2008]=2,
 [2009]=2,
 [2010]=2,
 [2011]=2,
 [2012]=2,
 [2013]=2,
 [2014]=2,
 [2015]=2,
 [2016]=2,
 [2017]=2,
 [2018]=2,
 [2019]=2,
 [2020]=2,
 [2021]=2,
 [2022]=2,
 [2023]=2,
 [2024]=2,
 [2025]=2,
 [2026]=2,
 [2027]=5,
 [2028]=5,
 [2029]=5,
 [2030]=5,
 [2031]=5,
 [2032]=5,
 [2033]=5,
 [2034]=5,
 [2035]=5,
 [2036]=6,
 [2037]=6,
 [2038]=6,
 [2039]=6,
 [2040]=6,
 [2041]=6,
 [2042]=2,
 [2045]=5,
 [2046]=6,
 [2047]=6,
 [2070]=5,
 [2071]=5,
 [2072]=5,
 [2073]=5,
 [2075]=5,
 [2076]=5,
 [2077]=5,
 [2078]=5,
 [2079]=5,
 [2080]=5,
 [2081]=5,
 [2082]=5,
 [2083]=5,
 [2085]=5,
 [2086]=5,
 [2087]=5,
 [2089]=5,
 [2090]=5,
 [2091]=5,
 [2092]=5,
 [2093]=5,
 [2112]=3,
 [2113]=2,
 [2114]=2,
 [2115]=2,
 [2116]=2,
 [2117]=2,
 [2118]=3,
 [2119]=3,
 [2120]=2,
 [2121]=3,
 [2122]=2,
 [2123]=2,
 [2124]=2,
 [2125]=2,
 [2126]=2,
 [2127]=2,
 [2128]=2,
 [2129]=2,
 [2130]=2,
 [2131]=2,
 [2132]=3,
 [2133]=2,
 [2134]=4,
 [2135]=4,
 [2136]=4,
 [2137]=5,
 [2138]=5,
 [2139]=5,
 [2144]=2,
 [2145]=4,
 [2146]=2,
 [2147]=2,
 [2148]=2,
 [2149]=2,
 [2150]=4,
 [2151]=3,
 [2152]=2,
 [2153]=3,
 [2154]=3,
 [2208]=2,
 [2209]=2,
 [2210]=2,
 [2211]=2,
 [2212]=2,
 [2213]=2,
 [2214]=2,
 [2215]=2,
 [2216]=2,
 [2217]=2,
 [2218]=3,
 [2219]=3,
 [2220]=3,
 [2221]=4,
 [2222]=3,
 [2223]=2,
 [2224]=2,
 [2225]=3,
 [2226]=3,
 [2227]=2,
 [2228]=2,
 [2230]=2,
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 [2232]=2,
 [2233]=3,
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 [2235]=2,
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 [2259]=5,
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 [6176]=2,
 [6177]=2,
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 [6183]=2,
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 [6187]=2,
 [6188]=2,
 [6189]=2,
 [6190]=2,
 [6191]=2,
 [6192]=2,
 [6193]=2,
 [6194]=2,
 [6195]=2,
 [6196]=2,
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 [6198]=2,
 [6199]=2,
 [6200]=2,
 [6201]=2,
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 [6248]=2,
 [6249]=2,
 [6250]=2,
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 [6279]=2,
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 [6294]=2,
 [6295]=2,
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 [6310]=2,
 [6311]=2,
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 [6313]=5,
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 [43115]=2,
 [43116]=2,
 [43117]=2,
 [43118]=2,
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 [43120]=2,
 [43121]=2,
 [43122]=1,
 [43123]=4,
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 [68294]=4,
 [68295]=3,
 [68296]=4,
 [68297]=3,
 [68298]=3,
 [68299]=4,
 [68300]=4,
 [68301]=1,
 [68302]=3,
 [68303]=3,
 [68304]=3,
 [68305]=3,
 [68306]=3,
 [68307]=2,
 [68308]=2,
 [68309]=2,
 [68310]=2,
 [68311]=1,
 [68312]=2,
 [68313]=2,
 [68314]=2,
 [68315]=2,
 [68316]=2,
 [68317]=3,
 [68318]=2,
 [68319]=2,
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 [68321]=3,
 [68322]=4,
 [68323]=4,
 [68324]=3,
 [68325]=5,
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 [68331]=2,
 [68332]=2,
 [68333]=2,
 [68334]=2,
 [68335]=3,
 [68480]=2,
 [68481]=3,
 [68482]=2,
 [68483]=3,
 [68484]=3,
 [68485]=3,
 [68486]=2,
 [68487]=2,
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  [3020]={ 3014,3031 },
  [3144]={ 3142,3158 },
  [3264]={ 3263,3285 },
  [3271]={ 3270,3285 },
  [3272]={ 3270,3286 },
  [3274]={ 3270,3266 },
  [3275]={ 3274,3285 },
  [3402]={ 3398,3390 },
  [3403]={ 3399,3390 },
  [3404]={ 3398,3415 },
 },
 ["vowel_modifier"]={
  [2304]=true,
  [2305]=true,
  [2306]=true,
  [2307]=true,
  [2433]=true,
  [3330]=true,
  [3331]=true,
  [4150]=true,
  [4152]=true,
  [4153]=true,
  [4154]=true,
  [43232]=true,
  [43233]=true,
  [43234]=true,
  [43235]=true,
  [43236]=true,
  [43237]=true,
  [43238]=true,
  [43239]=true,
  [43240]=true,
  [43241]=true,
  [43242]=true,
  [43243]=true,
  [43244]=true,
  [43245]=true,
  [43246]=true,
  [43247]=true,
  [43249]=true,
 },
}

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['font-ini']={
 version=1.001,
 comment="companion to font-ini.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
local allocate=utilities.storage.allocate
local sortedhash=table.sortedhash
fonts=fonts or {}
local fonts=fonts
local identifiers=allocate()
fonts.hashes=fonts.hashes  or { identifiers=identifiers }
fonts.tables=fonts.tables  or {}
fonts.helpers=fonts.helpers or {}
fonts.tracers=fonts.tracers or {} 
fonts.specifiers=fonts.specifiers or {} 
fonts.analyzers={} 
fonts.readers={}
fonts.definers={ methods={} }
fonts.loggers={ register=function() end }
if context then

--removed

end
fonts.privateoffsets={
 textbase=0xF0000,
 textextrabase=0xFD000,
 mathextrabase=0xFE000,
 mathbase=0xFF000,
 keepnames=false,
}
if node and not tex.getfontoffamily then
 tex.getfontoffamily=node.family_font 
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['luatex-font-mis']={
 version=1.001,
 comment="companion to luatex-*.tex",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
if context then
--removed

end
local currentfont=font.current
local hashes=fonts.hashes
local identifiers=hashes.identifiers or {}
local marks=hashes.marks    or {}
hashes.identifiers=identifiers
hashes.marks=marks
table.setmetatableindex(marks,function(t,k)
 if k==true then
  return marks[currentfont()]
 else
  local resources=identifiers[k].resources or {}
  local marks=resources.marks or {}
  t[k]=marks
  return marks
 end
end)
function font.each()
 return table.sortedhash(fonts.hashes.identifiers)
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['font-con']={
 version=1.001,
 comment="companion to font-ini.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
local next,tostring,tonumber,rawget=next,tostring,tonumber,rawget
local format,match,lower,gsub,find=string.format,string.match,string.lower,string.gsub,string.find
local sort,insert,concat=table.sort,table.insert,table.concat
local sortedkeys,sortedhash,serialize,fastcopy=table.sortedkeys,table.sortedhash,table.serialize,table.fastcopy
local derivetable=table.derive
local ioflush=io.flush
local round=math.round
local setmetatable,getmetatable,rawget,rawset=setmetatable,getmetatable,rawget,rawset
local trace_defining=false  trackers.register("fonts.defining",function(v) trace_defining=v end)
local trace_scaling=false  trackers.register("fonts.scaling",function(v) trace_scaling=v end)
local report_defining=logs.reporter("fonts","defining")
local fonts=fonts
local constructors=fonts.constructors or {}
fonts.constructors=constructors
local handlers=fonts.handlers or {} 
fonts.handlers=handlers
local allocate=utilities.storage.allocate
local setmetatableindex=table.setmetatableindex
constructors.dontembed=allocate()
constructors.namemode="fullpath" 
constructors.version=1.01
constructors.cache=containers.define("fonts","constructors",constructors.version,false)
constructors.privateoffset=fonts.privateoffsets.textbase or 0xF0000
constructors.cacheintex=true 
constructors.addtounicode=true
constructors.fixprotrusion=true
local designsizes=allocate()
constructors.designsizes=designsizes
local loadedfonts=allocate()
constructors.loadedfonts=loadedfonts
local factors={
 pt=65536.0,
 bp=65781.8,
}
function constructors.setfactor(f)
 constructors.factor=factors[f or 'pt'] or factors.pt
end
constructors.setfactor()
function constructors.scaled(scaledpoints,designsize) 
 if scaledpoints<0 then
  local factor=constructors.factor
  if designsize then
   if designsize>factor then 
    return (- scaledpoints/1000)*designsize 
   else
    return (- scaledpoints/1000)*designsize*factor
   end
  else
   return (- scaledpoints/1000)*10*factor
  end
 else
  return scaledpoints
 end
end
function constructors.getprivate(tfmdata)
 local properties=tfmdata.properties
 local private=properties.private
 properties.private=private+1
 return private
end
function constructors.setmathparameter(tfmdata,name,value)
 local m=tfmdata.mathparameters
 local c=tfmdata.MathConstants
 if m then
  m[name]=value
 end
 if c and c~=m then
  c[name]=value
 end
end
function constructors.getmathparameter(tfmdata,name)
 local p=tfmdata.mathparameters or tfmdata.MathConstants
 if p then
  return p[name]
 end
end
function constructors.cleanuptable(tfmdata)
end
function constructors.calculatescale(tfmdata,scaledpoints)
 local parameters=tfmdata.parameters
 if scaledpoints<0 then
  scaledpoints=(- scaledpoints/1000)*(tfmdata.designsize or parameters.designsize) 
 end
 return scaledpoints,scaledpoints/(parameters.units or 1000) 
end
local unscaled={
 ScriptPercentScaleDown=true,
 ScriptScriptPercentScaleDown=true,
 RadicalDegreeBottomRaisePercent=true,
 NoLimitSupFactor=true,
 NoLimitSubFactor=true,
}
function constructors.assignmathparameters(target,original)
 local mathparameters=original.mathparameters
 if mathparameters and next(mathparameters) then
  local targetparameters=target.parameters
  local targetproperties=target.properties
  local targetmathparameters={}
  local factor=targetproperties.math_is_scaled and 1 or targetparameters.factor
  for name,value in next,mathparameters do
   if unscaled[name] then
    targetmathparameters[name]=value
   else
    targetmathparameters[name]=value*factor
   end
  end
  if not targetmathparameters.FractionDelimiterSize then
   targetmathparameters.FractionDelimiterSize=1.01*targetparameters.size
  end
  if not mathparameters.FractionDelimiterDisplayStyleSize then
   targetmathparameters.FractionDelimiterDisplayStyleSize=2.40*targetparameters.size
  end
  target.mathparameters=targetmathparameters
 end
end
function constructors.beforecopyingcharacters(target,original)
end
function constructors.aftercopyingcharacters(target,original)
end
constructors.sharefonts=false
constructors.nofsharedfonts=0
local sharednames={}
function constructors.trytosharefont(target,tfmdata)
 if constructors.sharefonts then 
  local characters=target.characters
  local n=1
  local t={ target.psname }
  local u=sortedkeys(characters)
  for i=1,#u do
   local k=u[i]
   n=n+1;t[n]=k
   n=n+1;t[n]=characters[k].index or k
  end
  local h=md5.HEX(concat(t," "))
  local s=sharednames[h]
  if s then
   if trace_defining then
    report_defining("font %a uses backend resources of font %a",target.fullname,s)
   end
   target.fullname=s
   constructors.nofsharedfonts=constructors.nofsharedfonts+1
   target.properties.sharedwith=s
  else
   sharednames[h]=target.fullname
  end
 end
end
local synonyms={
 exheight="x_height",
 xheight="x_height",
 ex="x_height",
 emwidth="quad",
 em="quad",
 spacestretch="space_stretch",
 stretch="space_stretch",
 spaceshrink="space_shrink",
 shrink="space_shrink",
 extraspace="extra_space",
 xspace="extra_space",
 slantperpoint="slant",
}
function constructors.enhanceparameters(parameters)
 local mt=getmetatable(parameters)
 local getter=function(t,k)
  if not k then
   return nil
  end
  local s=synonyms[k]
  if s then
   return rawget(t,s) or (mt and mt[s]) or nil
  end
  if k=="spacing" then
   return {
    width=t.space,
    stretch=t.space_stretch,
    shrink=t.space_shrink,
    extra=t.extra_space,
   }
  end
  return mt and mt[k] or nil
 end
 local setter=function(t,k,v)
  if not k then
   return 0
  end
  local s=synonyms[k]
  if s then
   rawset(t,s,v)
  elseif k=="spacing" then
   if type(v)=="table" then
    rawset(t,"space",v.width or 0)
    rawset(t,"space_stretch",v.stretch or 0)
    rawset(t,"space_shrink",v.shrink or 0)
    rawset(t,"extra_space",v.extra or 0)
   end
  else
   rawset(t,k,v)
  end
 end
 setmetatable(parameters,{
  __index=getter,
  __newindex=setter,
 })
end
local function mathkerns(v,vdelta)
 local k={}
 for i=1,#v do
  local entry=v[i]
  local height=entry.height
  local kern=entry.kern
  k[i]={
   height=height and vdelta*height or 0,
   kern=kern   and vdelta*kern   or 0,
  }
 end
 return k
end
local psfake=0
local function fixedpsname(psname,fallback)
 local usedname=psname
 if psname and psname~="" then
  if find(psname," ",1,true) then
   usedname=gsub(psname,"[%s]+","-")
  else
  end
 elseif not fallback or fallback=="" then
  psfake=psfake+1
  psname="fakename-"..psfake
 else
  psname=fallback
  usedname=gsub(psname,"[^a-zA-Z0-9]+","-")
 end
 return usedname,psname~=usedname
end
function constructors.scale(tfmdata,specification)
 local target={}
 if tonumber(specification) then
  specification={ size=specification }
 end
 target.specification=specification
 local scaledpoints=specification.size
 local relativeid=specification.relativeid
 local properties=tfmdata.properties  or {}
 local goodies=tfmdata.goodies  or {}
 local resources=tfmdata.resources   or {}
 local descriptions=tfmdata.descriptions   or {} 
 local characters=tfmdata.characters  or {} 
 local changed=tfmdata.changed  or {} 
 local shared=tfmdata.shared   or {}
 local parameters=tfmdata.parameters  or {}
 local mathparameters=tfmdata.mathparameters or {}
 local targetcharacters={}
 local targetdescriptions=derivetable(descriptions)
 local targetparameters=derivetable(parameters)
 local targetproperties=derivetable(properties)
 local targetgoodies=goodies      
 target.characters=targetcharacters
 target.descriptions=targetdescriptions
 target.parameters=targetparameters
 target.properties=targetproperties
 target.goodies=targetgoodies
 target.shared=shared
 target.resources=resources
 target.unscaled=tfmdata
 local mathsize=tonumber(specification.mathsize) or 0
 local textsize=tonumber(specification.textsize) or scaledpoints
 local forcedsize=tonumber(parameters.mathsize   ) or 0 
 local extrafactor=tonumber(specification.factor  ) or 1
 if (mathsize==2 or forcedsize==2) and parameters.scriptpercentage then
  scaledpoints=parameters.scriptpercentage*textsize/100
 elseif (mathsize==3 or forcedsize==3) and parameters.scriptscriptpercentage then
  scaledpoints=parameters.scriptscriptpercentage*textsize/100
 elseif forcedsize>1000 then 
  scaledpoints=forcedsize
 else
 end
 targetparameters.mathsize=mathsize 
 targetparameters.textsize=textsize 
 targetparameters.forcedsize=forcedsize  
 targetparameters.extrafactor=extrafactor
 local addtounicode=constructors.addtounicode
 local tounicode=fonts.mappings.tounicode
 local unknowncode=tounicode(0xFFFD)
 local defaultwidth=resources.defaultwidth  or 0
 local defaultheight=resources.defaultheight or 0
 local defaultdepth=resources.defaultdepth or 0
 local units=parameters.units or 1000
 targetproperties.language=properties.language or "dflt" 
 targetproperties.script=properties.script   or "dflt" 
 targetproperties.mode=properties.mode  or "base" 
 targetproperties.method=properties.method
 local askedscaledpoints=scaledpoints
 local scaledpoints,delta=constructors.calculatescale(tfmdata,scaledpoints,nil,specification)
 local hdelta=delta
 local vdelta=delta
 target.designsize=parameters.designsize 
 target.units=units
 target.units_per_em=units
 local direction=properties.direction or tfmdata.direction or 0 
 target.direction=direction
 properties.direction=direction
 target.size=scaledpoints
 target.encodingbytes=properties.encodingbytes or 1
 target.subfont=properties.subfont
 target.embedding=properties.embedding or "subset"
 target.tounicode=1
 target.cidinfo=properties.cidinfo
 target.format=properties.format
 target.cache=constructors.cacheintex and "yes" or "renew"
 local fontname=properties.fontname or tfmdata.fontname
 local fullname=properties.fullname or tfmdata.fullname
 local filename=properties.filename or tfmdata.filename
 local psname=properties.psname   or tfmdata.psname
 local name=properties.name  or tfmdata.name
 local psname,psfixed=fixedpsname(psname,fontname or fullname or file.nameonly(filename))
 target.fontname=fontname
 target.fullname=fullname
 target.filename=filename
 target.psname=psname
 target.name=name
 properties.fontname=fontname
 properties.fullname=fullname
 properties.filename=filename
 properties.psname=psname
 properties.name=name
 local expansion=parameters.expansion
 if expansion then
  target.stretch=expansion.stretch
  target.shrink=expansion.shrink
  target.step=expansion.step
 end
 local slantfactor=parameters.slantfactor or 0
 if slantfactor~=0 then
  target.slant=slantfactor*1000
 else
  target.slant=0
 end
 local extendfactor=parameters.extendfactor or 0
 if extendfactor~=0 and extendfactor~=1 then
  hdelta=hdelta*extendfactor
  target.extend=extendfactor*1000
 else
  target.extend=1000 
 end
 local squeezefactor=parameters.squeezefactor or 0
 if squeezefactor~=0 and squeezefactor~=1 then
  vdelta=vdelta*squeezefactor
  target.squeeze=squeezefactor*1000
 else
  target.squeeze=1000 
 end
 local mode=parameters.mode or 0
 if mode~=0 then
  target.mode=mode
 end
 local width=parameters.width or 0
 if width~=0 then
  target.width=width*delta*1000/655360
 end
 targetparameters.factor=delta
 targetparameters.hfactor=hdelta
 targetparameters.vfactor=vdelta
 targetparameters.size=scaledpoints
 targetparameters.units=units
 targetparameters.scaledpoints=askedscaledpoints
 targetparameters.mode=mode
 targetparameters.width=width
 local isvirtual=properties.virtualized or tfmdata.type=="virtual"
 local hasquality=parameters.expansion or parameters.protrusion
 local hasitalics=properties.hasitalics
 local autoitalicamount=properties.autoitalicamount
 local stackmath=not properties.nostackmath
 local haskerns=properties.haskerns  or properties.mode=="base" 
 local hasligatures=properties.hasligatures or properties.mode=="base" 
 local realdimensions=properties.realdimensions
 local writingmode=properties.writingmode or "horizontal"
 local identity=properties.identity or "horizontal"
 local vfonts=target.fonts
 if vfonts and #vfonts>0 then
  target.fonts=fastcopy(vfonts) 
 elseif isvirtual then
  target.fonts={ { id=0 } } 
 end
 if changed and not next(changed) then
  changed=false
 end
 target.type=isvirtual and "virtual" or "real"
 target.writingmode=writingmode=="vertical" and "vertical" or "horizontal"
 target.identity=identity=="vertical" and "vertical" or "horizontal"
 target.postprocessors=tfmdata.postprocessors
 local targetslant=(parameters.slant   or parameters[1] or 0)*factors.pt 
 local targetspace=(parameters.space   or parameters[2] or 0)*hdelta
 local targetspace_stretch=(parameters.space_stretch or parameters[3] or 0)*hdelta
 local targetspace_shrink=(parameters.space_shrink  or parameters[4] or 0)*hdelta
 local targetx_height=(parameters.x_height   or parameters[5] or 0)*vdelta
 local targetquad=(parameters.quad    or parameters[6] or 0)*hdelta
 local targetextra_space=(parameters.extra_space   or parameters[7] or 0)*hdelta
 targetparameters.slant=targetslant 
 targetparameters.space=targetspace
 targetparameters.space_stretch=targetspace_stretch
 targetparameters.space_shrink=targetspace_shrink
 targetparameters.x_height=targetx_height
 targetparameters.quad=targetquad
 targetparameters.extra_space=targetextra_space
 local ascender=parameters.ascender
 if ascender then
  targetparameters.ascender=delta*ascender
 end
 local descender=parameters.descender
 if descender then
  targetparameters.descender=delta*descender
 end
 constructors.enhanceparameters(targetparameters)
 local protrusionfactor=constructors.fixprotrusion and ((targetquad~=0 and 1000/targetquad) or 1) or 1
 local scaledwidth=defaultwidth*hdelta
 local scaledheight=defaultheight*vdelta
 local scaleddepth=defaultdepth*vdelta
 local hasmath=(properties.hasmath or next(mathparameters)) and true
 if hasmath then
  constructors.assignmathparameters(target,tfmdata) 
  properties.hasmath=true
  target.nomath=false
  target.MathConstants=target.mathparameters
 else
  properties.hasmath=false
  target.nomath=true
  target.mathparameters=nil 
 end
 if hasmath then
  local mathitalics=properties.mathitalics
  if mathitalics==false then
   if trace_defining then
    report_defining("%s italics %s for font %a, fullname %a, filename %a","math",hasitalics and "ignored" or "disabled",name,fullname,filename)
   end
   hasitalics=false
   autoitalicamount=false
  end
 else
  local textitalics=properties.textitalics
  if textitalics==false then
   if trace_defining then
    report_defining("%s italics %s for font %a, fullname %a, filename %a","text",hasitalics and "ignored" or "disabled",name,fullname,filename)
   end
   hasitalics=false
   autoitalicamount=false
  end
 end
 if trace_defining then
  report_defining("defining tfm, name %a, fullname %a, filename %a, %spsname %a, hscale %a, vscale %a, math %a, italics %a",
   name,fullname,filename,psfixed and "(fixed) " or "",psname,hdelta,vdelta,
   hasmath and "enabled" or "disabled",hasitalics and "enabled" or "disabled")
 end
 constructors.beforecopyingcharacters(target,tfmdata)
 local sharedkerns={}
 for unicode,character in next,characters do
  local chr,description,index
  if changed then
   local c=changed[unicode]
   if c and c~=unicode then
    if c then
     description=descriptions[c] or descriptions[unicode] or character
     character=characters[c] or character
     index=description.index or c
    else
     description=descriptions[unicode] or character
     index=description.index or unicode
    end
   else
    description=descriptions[unicode] or character
    index=description.index or unicode
   end
  else
   description=descriptions[unicode] or character
   index=description.index or unicode
  end
  local width=description.width
  local height=description.height
  local depth=description.depth
  local isunicode=description.unicode
  if realdimensions then
   if not height or height==0 then
    local bb=description.boundingbox
    local ht=bb[4]
    if ht~=0 then
     height=ht
    end
    if not depth or depth==0 then
     local dp=-bb[2]
     if dp~=0 then
      depth=dp
     end
    end
   elseif not depth or depth==0 then
    local dp=-description.boundingbox[2]
    if dp~=0 then
     depth=dp
    end
   end
  end
  if width  then width=hdelta*width  else width=scaledwidth  end
  if height then height=vdelta*height else height=scaledheight end
  if depth and depth~=0 then
   depth=delta*depth
   if isunicode then
    chr={
     index=index,
     height=height,
     depth=depth,
     width=width,
     unicode=isunicode,
    }
   else
    chr={
     index=index,
     height=height,
     depth=depth,
     width=width,
    }
   end
  else
   if isunicode then
    chr={
     index=index,
     height=height,
     width=width,
     unicode=isunicode,
    }
   else
    chr={
     index=index,
     height=height,
     width=width,
    }
   end
  end
  if addtounicode then
   chr.tounicode=isunicode and tounicode(isunicode) or unknowncode
  end
  if hasquality then
   local ve=character.expansion_factor
   if ve then
    chr.expansion_factor=ve*1000 
   end
   local vl=character.left_protruding
   if vl then
    chr.left_protruding=protrusionfactor*width*vl
   end
   local vr=character.right_protruding
   if vr then
    chr.right_protruding=protrusionfactor*width*vr
   end
  end
  if hasmath then
   local vn=character.next
   if vn then
    chr.next=vn
   else
    local vv=character.vert_variants
    if vv then
     local t={}
     for i=1,#vv do
      local vvi=vv[i]
      local s=vvi["start"]   or 0
      local e=vvi["end"]  or 0
      local a=vvi["advance"] or 0
      t[i]={ 
       ["start"]=s==0 and 0 or s*vdelta,
       ["end"]=e==0 and 0 or e*vdelta,
       ["advance"]=a==0 and 0 or a*vdelta,
       ["extender"]=vvi["extender"],
       ["glyph"]=vvi["glyph"],
      }
     end
     chr.vert_variants=t
    else
     local hv=character.horiz_variants
     if hv then
      local t={}
      for i=1,#hv do
       local hvi=hv[i]
       local s=hvi["start"]   or 0
       local e=hvi["end"]  or 0
       local a=hvi["advance"] or 0
       t[i]={ 
        ["start"]=s==0 and 0 or s*hdelta,
        ["end"]=e==0 and 0 or e*hdelta,
        ["advance"]=a==0 and 0 or a*hdelta,
        ["extender"]=hvi["extender"],
        ["glyph"]=hvi["glyph"],
       }
      end
      chr.horiz_variants=t
     end
    end
   end
   local vi=character.vert_italic
   if vi and vi~=0 then
    chr.vert_italic=vi*hdelta
   end
   local va=character.accent
   if va then
    chr.top_accent=vdelta*va
   end
   if stackmath then
    local mk=character.mathkerns
    if mk then
     local tr=mk.topright
     local tl=mk.topleft
     local br=mk.bottomright
     local bl=mk.bottomleft
     chr.mathkern={ 
      top_right=tr and mathkerns(tr,vdelta) or nil,
      top_left=tl and mathkerns(tl,vdelta) or nil,
      bottom_right=br and mathkerns(br,vdelta) or nil,
      bottom_left=bl and mathkerns(bl,vdelta) or nil,
     }
    end
   end
   if hasitalics then
    local vi=character.italic
    if vi and vi~=0 then
     chr.italic=vi*hdelta
    end
   end
  elseif autoitalicamount then 
   local vi=description.italic
   if not vi then
    local bb=description.boundingbox
    if bb then
     local vi=bb[3]-description.width+autoitalicamount
     if vi>0 then 
      chr.italic=vi*hdelta
     end
    else
    end
   elseif vi~=0 then
    chr.italic=vi*hdelta
   end
  elseif hasitalics then 
   local vi=character.italic
   if vi and vi~=0 then
    chr.italic=vi*hdelta
   end
  end
  if haskerns then
   local vk=character.kerns
   if vk then
    local s=sharedkerns[vk]
    if not s then
     s={}
     for k,v in next,vk do s[k]=v*hdelta end
     sharedkerns[vk]=s
    end
    chr.kerns=s
   end
  end
  if hasligatures then
   local vl=character.ligatures
   if vl then
    if true then
     chr.ligatures=vl 
    else
     local tt={}
     for i,l in next,vl do
      tt[i]=l
     end
     chr.ligatures=tt
    end
   end
  end
  if isvirtual then
   local vc=character.commands
   if vc then
    local ok=false
    for i=1,#vc do
     local key=vc[i][1]
     if key=="right" or key=="down" or key=="rule" then
      ok=true
      break
     end
    end
    if ok then
     local tt={}
     for i=1,#vc do
      local ivc=vc[i]
      local key=ivc[1]
      if key=="right" then
       tt[i]={ key,ivc[2]*hdelta }
      elseif key=="down" then
       tt[i]={ key,ivc[2]*vdelta }
      elseif key=="rule" then
       tt[i]={ key,ivc[2]*vdelta,ivc[3]*hdelta }
      else 
       tt[i]=ivc 
      end
     end
     chr.commands=tt
    else
     chr.commands=vc
    end
   end
  end
  targetcharacters[unicode]=chr
 end
 properties.setitalics=hasitalics
 constructors.aftercopyingcharacters(target,tfmdata)
 constructors.trytosharefont(target,tfmdata)
 local vfonts=target.fonts
 if isvirtual or target.type=="virtual" or properties.virtualized then
  properties.virtualized=true
  target.type="virtual"
  if not vfonts or #vfonts==0 then
   target.fonts={ { id=0 } }
  end
 elseif vfonts then
  properties.virtualized=true
  target.type="virtual"
  if #vfonts==0 then
   target.fonts={ { id=0 } }
  end
 end
 return target
end
function constructors.finalize(tfmdata)
 if tfmdata.properties and tfmdata.properties.finalized then
  return
 end
 if not tfmdata.characters then
  return nil
 end
 if not tfmdata.goodies then
  tfmdata.goodies={} 
 end
 local parameters=tfmdata.parameters
 if not parameters then
  return nil
 end
 if not parameters.expansion then
  parameters.expansion={
   stretch=tfmdata.stretch or 0,
   shrink=tfmdata.shrink  or 0,
   step=tfmdata.step or 0,
  }
 end
 if not parameters.size then
  parameters.size=tfmdata.size
 end
 if not parameters.mode then
  parameters.mode=0
 end
 if not parameters.width then
  parameters.width=0
 end
 if not parameters.slantfactor then
  parameters.slantfactor=(tfmdata.slant or 0)/1000
 end
 if not parameters.extendfactor then
  parameters.extendfactor=(tfmdata.extend or 1000)/1000
 end
 if not parameters.squeezefactor then
  parameters.squeezefactor=(tfmdata.squeeze or 1000)/1000
 end
 local designsize=parameters.designsize
 if designsize then
  parameters.minsize=tfmdata.minsize or designsize
  parameters.maxsize=tfmdata.maxsize or designsize
 else
  designsize=factors.pt*10
  parameters.designsize=designsize
  parameters.minsize=designsize
  parameters.maxsize=designsize
 end
 parameters.minsize=tfmdata.minsize or parameters.designsize
 parameters.maxsize=tfmdata.maxsize or parameters.designsize
 if not parameters.units then
  parameters.units=tfmdata.units or tfmdata.units_per_em or 1000
 end
 if not tfmdata.descriptions then
  local descriptions={} 
  setmetatableindex(descriptions,function(t,k) local v={} t[k]=v return v end)
  tfmdata.descriptions=descriptions
 end
 local properties=tfmdata.properties
 if not properties then
  properties={}
  tfmdata.properties=properties
 end
 if not properties.virtualized then
  properties.virtualized=tfmdata.type=="virtual"
 end
 properties.fontname=properties.fontname or tfmdata.fontname
 properties.filename=properties.filename or tfmdata.filename
 properties.fullname=properties.fullname or tfmdata.fullname
 properties.name=properties.name  or tfmdata.name
 properties.psname=properties.psname   or tfmdata.psname
 properties.encodingbytes=tfmdata.encodingbytes or 1
 properties.subfont=tfmdata.subfont    or nil
 properties.embedding=tfmdata.embedding  or "subset"
 properties.tounicode=tfmdata.tounicode  or 1
 properties.cidinfo=tfmdata.cidinfo    or nil
 properties.format=tfmdata.format  or "type1"
 properties.direction=tfmdata.direction  or 0
 properties.writingmode=tfmdata.writingmode   or "horizontal"
 properties.identity=tfmdata.identity   or "horizontal"
 properties.usedbitmap=tfmdata.usedbitmap
 if not tfmdata.resources then
  tfmdata.resources={}
 end
 if not tfmdata.shared then
  tfmdata.shared={}
 end
 if not properties.hasmath then
  properties.hasmath=not tfmdata.nomath
 end
 tfmdata.MathConstants=nil
 tfmdata.postprocessors=nil
 tfmdata.fontname=nil
 tfmdata.filename=nil
 tfmdata.fullname=nil
 tfmdata.name=nil 
 tfmdata.psname=nil
 tfmdata.encodingbytes=nil
 tfmdata.subfont=nil
 tfmdata.embedding=nil
 tfmdata.tounicode=nil
 tfmdata.cidinfo=nil
 tfmdata.format=nil
 tfmdata.direction=nil
 tfmdata.type=nil
 tfmdata.nomath=nil
 tfmdata.designsize=nil
 tfmdata.size=nil
 tfmdata.stretch=nil
 tfmdata.shrink=nil
 tfmdata.step=nil
 tfmdata.slant=nil
 tfmdata.extend=nil
 tfmdata.squeeze=nil
 tfmdata.mode=nil
 tfmdata.width=nil
 tfmdata.units=nil
 tfmdata.units_per_em=nil
 tfmdata.cache=nil
 properties.finalized=true
 return tfmdata
end
local hashmethods={}
constructors.hashmethods=hashmethods
function constructors.hashfeatures(specification) 
 local features=specification.features
 if features then
  local t,n={},0
  for category,list in sortedhash(features) do
   if next(list) then
    local hasher=hashmethods[category]
    if hasher then
     local hash=hasher(list)
     if hash then
      n=n+1
      t[n]=category..":"..hash
     end
    end
   end
  end
  if n>0 then
   return concat(t," & ")
  end
 end
 return "unknown"
end
hashmethods.normal=function(list)
 local s={}
 local n=0
 for k,v in next,list do
  if not k then
  elseif k=="number" or k=="features" then
  else
   n=n+1
   if type(v)=="table" then
    local t={}
    local m=0
    for k,v in next,v do
     m=m+1
     t[m]=k..'='..tostring(v)
    end
    sort(t)
    s[n]=k..'={'..concat(t,",").."}"
   else
    s[n]=k..'='..tostring(v)
   end
  end
 end
 if n>0 then
  sort(s)
  return concat(s,"+")
 end
end
function constructors.hashinstance(specification,force)
 local hash=specification.hash
 local size=specification.size
 local fallbacks=specification.fallbacks
 if force or not hash then
  hash=constructors.hashfeatures(specification)
  specification.hash=hash
 end
 if size<1000 and designsizes[hash] then
  size=round(constructors.scaled(size,designsizes[hash]))
 else
  size=round(size)
 end
 specification.size=size
 if fallbacks then
  return hash..' @ '..size..' @ '..fallbacks
 else
  return hash..' @ '..size
 end
end
function constructors.setname(tfmdata,specification) 
 if constructors.namemode=="specification" then
  local specname=specification.specification
  if specname then
   tfmdata.properties.name=specname
   if trace_defining then
    report_otf("overloaded fontname %a",specname)
   end
  end
 end
end
function constructors.checkedfilename(data)
 local foundfilename=data.foundfilename
 if not foundfilename then
  local askedfilename=data.filename or ""
  if askedfilename~="" then
   askedfilename=resolvers.resolve(askedfilename) 
   foundfilename=resolvers.findbinfile(askedfilename,"") or ""
   if foundfilename=="" then
    report_defining("source file %a is not found",askedfilename)
    foundfilename=resolvers.findbinfile(file.basename(askedfilename),"") or ""
    if foundfilename~="" then
     report_defining("using source file %a due to cache mismatch",foundfilename)
    end
   end
  end
  data.foundfilename=foundfilename
 end
 return foundfilename
end
local formats=allocate()
fonts.formats=formats
setmetatableindex(formats,function(t,k)
 local l=lower(k)
 if rawget(t,k) then
  t[k]=l
  return l
 end
 return rawget(t,file.suffix(l))
end)
do
 local function setindeed(mode,source,target,group,name,position)
  local action=source[mode]
  if not action then
   return
  end
  local t=target[mode]
  if not t then
   report_defining("fatal error in setting feature %a, group %a, mode %a",name,group,mode)
   os.exit()
  elseif position then
   insert(t,position,{ name=name,action=action })
  else
   for i=1,#t do
    local ti=t[i]
    if ti.name==name then
     ti.action=action
     return
    end
   end
   insert(t,{ name=name,action=action })
  end
 end
 local function set(group,name,target,source)
  target=target[group]
  if not target then
   report_defining("fatal target error in setting feature %a, group %a",name,group)
   os.exit()
  end
  local source=source[group]
  if not source then
   report_defining("fatal source error in setting feature %a, group %a",name,group)
   os.exit()
  end
  local position=source.position
  setindeed("node",source,target,group,name,position)
  setindeed("base",source,target,group,name,position)
  setindeed("plug",source,target,group,name,position)
 end
 local function register(where,specification)
  local name=specification.name
  if name and name~="" then
   local default=specification.default
   local description=specification.description
   local initializers=specification.initializers
   local processors=specification.processors
   local manipulators=specification.manipulators
   local modechecker=specification.modechecker
   if default then
    where.defaults[name]=default
   end
   if description and description~="" then
    where.descriptions[name]=description
   end
   if initializers then
    set('initializers',name,where,specification)
   end
   if processors then
    set('processors',name,where,specification)
   end
   if manipulators then
    set('manipulators',name,where,specification)
   end
   if modechecker then
      where.modechecker=modechecker
   end
  end
 end
 constructors.registerfeature=register
 function constructors.getfeatureaction(what,where,mode,name)
  what=handlers[what].features
  if what then
   where=what[where]
   if where then
    mode=where[mode]
    if mode then
     for i=1,#mode do
      local m=mode[i]
      if m.name==name then
       return m.action
      end
     end
    end
   end
  end
 end
 local newfeatures={}
 constructors.newfeatures=newfeatures 
 constructors.features=newfeatures
 local function setnewfeatures(what)
  local handler=handlers[what]
  local features=handler.features
  if not features then
   local tables=handler.tables  
   local statistics=handler.statistics 
   features=allocate {
    defaults={},
    descriptions=tables and tables.features or {},
    used=statistics and statistics.usedfeatures or {},
    initializers={ base={},node={},plug={} },
    processors={ base={},node={},plug={} },
    manipulators={ base={},node={},plug={} },
   }
   features.register=function(specification) return register(features,specification) end
   handler.features=features 
  end
  return features
 end
 setmetatable(newfeatures,{
  __call=function(t,k) local v=t[k] return v end,
  __index=function(t,k) local v=setnewfeatures(k) t[k]=v return v end,
 })
end
do
 local newhandler={}
 constructors.handlers=newhandler 
 constructors.newhandler=newhandler
 local function setnewhandler(what) 
  local handler=handlers[what]
  if not handler then
   handler={}
   handlers[what]=handler
  end
  return handler
 end
 setmetatable(newhandler,{
  __call=function(t,k) local v=t[k] return v end,
  __index=function(t,k) local v=setnewhandler(k) t[k]=v return v end,
 })
end
do
 local newenhancer={}
 constructors.enhancers=newenhancer
 constructors.newenhancer=newenhancer
 local function setnewenhancer(format)
  local handler=handlers[format]
  local enhancers=handler.enhancers
  if not enhancers then
   local actions=allocate() 
   local before=allocate()
   local after=allocate()
   local order=allocate()
   local known={}
   local nofsteps=0
   local patches={ before=before,after=after }
   local trace=false
   local report=logs.reporter("fonts",format.." enhancing")
   trackers.register(format..".loading",function(v) trace=v end)
   local function enhance(name,data,filename,raw)
    local enhancer=actions[name]
    if enhancer then
     if trace then
      report("apply enhancement %a to file %a",name,filename)
      ioflush()
     end
     enhancer(data,filename,raw)
    else
    end
   end
   local function apply(data,filename,raw)
    local basename=file.basename(lower(filename))
    if trace then
     report("%s enhancing file %a","start",filename)
    end
    ioflush() 
    for e=1,nofsteps do
     local enhancer=order[e]
     local b=before[enhancer]
     if b then
      for pattern,action in next,b do
       if find(basename,pattern) then
        action(data,filename,raw)
       end
      end
     end
     enhance(enhancer,data,filename,raw) 
     local a=after[enhancer]
     if a then
      for pattern,action in next,a do
       if find(basename,pattern) then
        action(data,filename,raw)
       end
      end
     end
     ioflush() 
    end
    if trace then
     report("%s enhancing file %a","stop",filename)
    end
    ioflush() 
   end
   local function register(what,action)
    if action then
     if actions[what] then
     else
      nofsteps=nofsteps+1
      order[nofsteps]=what
      known[what]=nofsteps
     end
     actions[what]=action
    else
     report("bad enhancer %a",what)
    end
   end
   local function patch(what,where,pattern,action)
    local pw=patches[what]
    if pw then
     local ww=pw[where]
     if ww then
      ww[pattern]=action
     else
      pw[where]={ [pattern]=action }
      if not known[where] then
       nofsteps=nofsteps+1
       order[nofsteps]=where
       known[where]=nofsteps
      end
     end
    end
   end
   enhancers={
    register=register,
    apply=apply,
    patch=patch,
    report=report,
    patches={
     register=patch,
     report=report,
    },
   }
   handler.enhancers=enhancers
  end
  return enhancers
 end
 setmetatable(newenhancer,{
  __call=function(t,k) local v=t[k] return v end,
  __index=function(t,k) local v=setnewenhancer(k) t[k]=v return v end,
 })
end
function constructors.checkedfeatures(what,features)
 local defaults=handlers[what].features.defaults
 if features and next(features) then
  features=fastcopy(features) 
  for key,value in next,defaults do
   if features[key]==nil then
    features[key]=value
   end
  end
  return features
 else
  return fastcopy(defaults) 
 end
end
function constructors.initializefeatures(what,tfmdata,features,trace,report)
 if features and next(features) then
  local properties=tfmdata.properties or {} 
  local whathandler=handlers[what]
  local whatfeatures=whathandler.features
  local whatmodechecker=whatfeatures.modechecker
  local mode=properties.mode or (whatmodechecker and whatmodechecker(tfmdata,features,features.mode)) or features.mode or "base"
  properties.mode=mode 
  features.mode=mode
  local done={}
  while true do
   local redo=false
   local initializers=whatfeatures.initializers[mode]
   if initializers then
    for i=1,#initializers do
     local step=initializers[i]
     local feature=step.name
     local value=features[feature]
     if not value then
     elseif done[feature] then
     else
      local action=step.action
      if trace then
       report("initializing feature %a to %a for mode %a for font %a",feature,
        value,mode,tfmdata.properties.fullname)
      end
      action(tfmdata,value,features) 
      if mode~=properties.mode or mode~=features.mode then
       if whatmodechecker then
        properties.mode=whatmodechecker(tfmdata,features,properties.mode) 
        features.mode=properties.mode
       end
       if mode~=properties.mode then
        mode=properties.mode
        redo=true
       end
      end
      done[feature]=true
     end
     if redo then
      break
     end
    end
    if not redo then
     break
    end
   else
    break
   end
  end
  properties.mode=mode 
  return true
 else
  return false
 end
end
function constructors.collectprocessors(what,tfmdata,features,trace,report)
 local processes={}
 local nofprocesses=0
 if features and next(features) then
  local properties=tfmdata.properties
  local whathandler=handlers[what]
  local whatfeatures=whathandler.features
  local whatprocessors=whatfeatures.processors
  local mode=properties.mode
  local processors=whatprocessors[mode]
  if processors then
   for i=1,#processors do
    local step=processors[i]
    local feature=step.name
    if features[feature] then
     local action=step.action
     if trace then
      report("installing feature processor %a for mode %a for font %a",feature,mode,tfmdata.properties.fullname)
     end
     if action then
      nofprocesses=nofprocesses+1
      processes[nofprocesses]=action
     end
    end
   end
  elseif trace then
   report("no feature processors for mode %a for font %a",mode,properties.fullname)
  end
 end
 return processes
end
function constructors.applymanipulators(what,tfmdata,features,trace,report)
 if features and next(features) then
  local properties=tfmdata.properties
  local whathandler=handlers[what]
  local whatfeatures=whathandler.features
  local whatmanipulators=whatfeatures.manipulators
  local mode=properties.mode
  local manipulators=whatmanipulators[mode]
  if manipulators then
   for i=1,#manipulators do
    local step=manipulators[i]
    local feature=step.name
    local value=features[feature]
    if value then
     local action=step.action
     if trace then
      report("applying feature manipulator %a for mode %a for font %a",feature,mode,properties.fullname)
     end
     if action then
      action(tfmdata,feature,value)
     end
    end
   end
  end
 end
end
function constructors.addcoreunicodes(unicodes) 
 if not unicodes then
  unicodes={}
 end
 unicodes.space=0x0020
 unicodes.hyphen=0x002D
 unicodes.zwj=0x200D
 unicodes.zwnj=0x200C
 return unicodes
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['luatex-font-enc']={
 version=1.001,
 comment="companion to luatex-*.tex",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
if context then
--removed

end
local fonts=fonts
local encodings={}
fonts.encodings=encodings
encodings.agl={}
encodings.known={}
setmetatable(encodings.agl,{ __index=function(t,k)
 if k=="unicodes" then
  logs.report("fonts","loading (extended) adobe glyph list")
  local unicodes=dofile(resolvers.findfile("font-age.lua"))
  encodings.agl={ unicodes=unicodes }
  return unicodes
 else
  return nil
 end
end })
encodings.cache=containers.define("fonts","enc",encodings.version,true)
function encodings.load(filename)
 local name=file.removesuffix(filename)
 local data=containers.read(encodings.cache,name)
 if data then
  return data
 end
 local vector,tag,hash,unicodes={},"",{},{}
 local foundname=resolvers.findfile(filename,'enc')
 if foundname and foundname~="" then
  local ok,encoding,size=resolvers.loadbinfile(foundname)
  if ok and encoding then
   encoding=string.gsub(encoding,"%%(.-)\n","")
   local unicoding=encodings.agl.unicodes
   local tag,vec=string.match(encoding,"/(%w+)%s*%[(.*)%]%s*def")
   local i=0
   for ch in string.gmatch(vec,"/([%a%d%.]+)") do
    if ch~=".notdef" then
     vector[i]=ch
     if not hash[ch] then
      hash[ch]=i
     else
     end
     local u=unicoding[ch]
     if u then
      unicodes[u]=i
     end
    end
    i=i+1
   end
  end
 end
 local data={
  name=name,
  tag=tag,
  vector=vector,
  hash=hash,
  unicodes=unicodes
 }
 return containers.write(encodings.cache,name,data)
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['font-cid']={
 version=1.001,
 comment="companion to font-ini.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
local format,match,lower=string.format,string.match,string.lower
local tonumber=tonumber
local P,S,R,C,V,lpegmatch=lpeg.P,lpeg.S,lpeg.R,lpeg.C,lpeg.V,lpeg.match
local fonts,logs,trackers=fonts,logs,trackers
local trace_loading=false  trackers.register("otf.loading",function(v) trace_loading=v end)
local report_otf=logs.reporter("fonts","otf loading")
local cid={}
fonts.cid=cid
local cidmap={}
local cidmax=10
local number=C(R("09","af","AF")^1)
local space=S(" \n\r\t")
local spaces=space^0
local period=P(".")
local periods=period*period
local name=P("/")*C((1-space)^1)
local unicodes,names={},{} 
local function do_one(a,b)
 unicodes[tonumber(a)]=tonumber(b,16)
end
local function do_range(a,b,c)
 c=tonumber(c,16)
 for i=tonumber(a),tonumber(b) do
  unicodes[i]=c
  c=c+1
 end
end
local function do_name(a,b)
 names[tonumber(a)]=b
end
local grammar=P { "start",
 start=number*spaces*number*V("series"),
 series=(spaces*(V("one")+V("range")+V("named")))^1,
 one=(number*spaces*number)/do_one,
 range=(number*periods*number*spaces*number)/do_range,
 named=(number*spaces*name)/do_name
}
local function loadcidfile(filename)
 local data=io.loaddata(filename)
 if data then
  unicodes,names={},{}
  lpegmatch(grammar,data)
  local supplement,registry,ordering=match(filename,"^(.-)%-(.-)%-()%.(.-)$")
  return {
   supplement=supplement,
   registry=registry,
   ordering=ordering,
   filename=filename,
   unicodes=unicodes,
   names=names,
  }
 end
end
cid.loadfile=loadcidfile 
local template="%s-%s-%s.cidmap"
local function locate(registry,ordering,supplement)
 local filename=format(template,registry,ordering,supplement)
 local hashname=lower(filename)
 local found=cidmap[hashname]
 if not found then
  if trace_loading then
   report_otf("checking cidmap, registry %a, ordering %a, supplement %a, filename %a",registry,ordering,supplement,filename)
  end
  local fullname=resolvers.findfile(filename,'cid') or ""
  if fullname~="" then
   found=loadcidfile(fullname)
   if found then
    if trace_loading then
     report_otf("using cidmap file %a",filename)
    end
    cidmap[hashname]=found
    found.usedname=file.basename(filename)
   end
  end
 end
 return found
end
function cid.getmap(specification)
 if not specification then
  report_otf("invalid cidinfo specification, table expected")
  return
 end
 local registry=specification.registry
 local ordering=specification.ordering
 local supplement=specification.supplement
 local filename=format(registry,ordering,supplement)
 local lowername=lower(filename)
 local found=cidmap[lowername]
 if found then
  return found
 end
 if ordering=="Identity" then
  local found={
   supplement=supplement,
   registry=registry,
   ordering=ordering,
   filename=filename,
   unicodes={},
   names={},
  }
  cidmap[lowername]=found
  return found
 end
 if trace_loading then
  report_otf("cidmap needed, registry %a, ordering %a, supplement %a",registry,ordering,supplement)
 end
 found=locate(registry,ordering,supplement)
 if not found then
  local supnum=tonumber(supplement)
  local cidnum=nil
  if supnum<cidmax then
   for s=supnum+1,cidmax do
    local c=locate(registry,ordering,s)
    if c then
     found,cidnum=c,s
     break
    end
   end
  end
  if not found and supnum>0 then
   for s=supnum-1,0,-1 do
    local c=locate(registry,ordering,s)
    if c then
     found,cidnum=c,s
     break
    end
   end
  end
  registry=lower(registry)
  ordering=lower(ordering)
  if found and cidnum>0 then
   for s=0,cidnum-1 do
    local filename=format(template,registry,ordering,s)
    if not cidmap[filename] then
     cidmap[filename]=found
    end
   end
  end
 end
 return found
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['font-map']={
 version=1.001,
 comment="companion to font-ini.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
local tonumber,next,type=tonumber,next,type
local match,format,find,concat,gsub,lower=string.match,string.format,string.find,table.concat,string.gsub,string.lower
local P,R,S,C,Ct,Cc,lpegmatch=lpeg.P,lpeg.R,lpeg.S,lpeg.C,lpeg.Ct,lpeg.Cc,lpeg.match
local formatters=string.formatters
local sortedhash,sortedkeys=table.sortedhash,table.sortedkeys
local idiv=number.idiv
local trace_loading=false  trackers.register("fonts.loading",function(v) trace_loading=v end)
local trace_mapping=false  trackers.register("fonts.mapping",function(v) trace_mapping=v end)
local report_fonts=logs.reporter("fonts","loading")
local force_ligatures=false  directives.register("fonts.mapping.forceligatures",function(v) force_ligatures=v end)
local fonts=fonts or {}
local mappings=fonts.mappings or {}
fonts.mappings=mappings
local allocate=utilities.storage.allocate
local hex=R("AF","af","09")
local hexfour=(hex*hex*hex^-2)/function(s) return tonumber(s,16) end
local hexsix=(hex*hex*hex^-4)/function(s) return tonumber(s,16) end
local dec=(R("09")^1)/tonumber
local period=P(".")
local unicode=(P("uni")+P("UNI"))*(hexfour*(period+P(-1))*Cc(false)+Ct(hexfour^1)*Cc(true)) 
local ucode=(P("u")+P("U")  )*(hexsix*(period+P(-1))*Cc(false)+Ct(hexsix^1)*Cc(true)) 
local index=P("index")*dec*Cc(false)
local parser=unicode+ucode+index
local parsers={}
local function makenameparser(str)
 if not str or str=="" then
  return parser
 else
  local p=parsers[str]
  if not p then
   p=P(str)*period*dec*Cc(false)
   parsers[str]=p
  end
  return p
 end
end
local f_single=formatters["%04X"]
local f_double=formatters["%04X%04X"]
local s_unknown="FFFD"
local function tounicode16(unicode)
 if unicode<0xD7FF or (unicode>0xDFFF and unicode<=0xFFFF) then
  return f_single(unicode)
 elseif unicode>=0x00E000 and unicode<=0x00F8FF then
  return s_unknown
 elseif unicode>=0x0F0000 and unicode<=0x0FFFFF then
  return s_unknown
 elseif unicode>=0x100000 and unicode<=0x10FFFF then
  return s_unknown
 elseif unicode>=0x00D800 and unicode<=0x00DFFF then
  return s_unknown
 else
  unicode=unicode-0x10000
  return f_double(idiv(k,0x400)+0xD800,unicode%0x400+0xDC00)
 end
end
local function tounicode16sequence(unicodes)
 local t={}
 for l=1,#unicodes do
  local u=unicodes[l]
  if u<0xD7FF or (u>0xDFFF and u<=0xFFFF) then
   t[l]=f_single(u)
  elseif unicode>=0x00E000 and unicode<=0x00F8FF then
   t[l]=s_unknown
  elseif unicode>=0x0F0000 and unicode<=0x0FFFFF then
   t[l]=s_unknown
  elseif unicode>=0x100000 and unicode<=0x10FFFF then
   t[l]=s_unknown
  elseif unicode>=0x00D7FF and unicode<=0x00DFFF then
   t[l]=s_unknown
  else
   u=u-0x10000
   t[l]=f_double(idiv(k,0x400)+0xD800,u%0x400+0xDC00)
  end
 end
 return concat(t)
end
local hash={}
local conc={}
table.setmetatableindex(hash,function(t,k)
 if k<0xD7FF or (k>0xDFFF and k<=0xFFFF) then
  v=f_single(k)
 else
  local k=k-0x10000
  v=f_double(idiv(k,0x400)+0xD800,k%0x400+0xDC00)
 end
 t[k]=v
 return v
end)
local function tounicode(k)
 if type(k)=="table" then
  local n=#k
  for l=1,n do
   conc[l]=hash[k[l]]
  end
  return concat(conc,"",1,n)
 elseif k>=0x00E000 and k<=0x00F8FF then
  return s_unknown
 elseif k>=0x0F0000 and k<=0x0FFFFF then
  return s_unknown
 elseif k>=0x100000 and k<=0x10FFFF then
  return s_unknown
 elseif k>=0x00D7FF and k<=0x00DFFF then
  return s_unknown
 else
  return hash[k]
 end
end
local function fromunicode16(str)
 if #str==4 then
  return tonumber(str,16)
 else
  local l,r=match(str,"(....)(....)")
  return 0x10000+(tonumber(l,16)-0xD800)*0x400+tonumber(r,16)-0xDC00
 end
end
mappings.makenameparser=makenameparser
mappings.tounicode=tounicode
mappings.tounicode16=tounicode16
mappings.tounicode16sequence=tounicode16sequence
mappings.fromunicode16=fromunicode16
local ligseparator=P("_")
local varseparator=P(".")
local namesplitter=Ct(C((1-ligseparator-varseparator)^1)*(ligseparator*C((1-ligseparator-varseparator)^1))^0)
do
 local overloads={
  IJ={ name="I_J",unicode={ 0x49,0x4A },mess=0x0132 },
  ij={ name="i_j",unicode={ 0x69,0x6A },mess=0x0133 },
  ff={ name="f_f",unicode={ 0x66,0x66 },mess=0xFB00 },
  fi={ name="f_i",unicode={ 0x66,0x69 },mess=0xFB01 },
  fl={ name="f_l",unicode={ 0x66,0x6C },mess=0xFB02 },
  ffi={ name="f_f_i",unicode={ 0x66,0x66,0x69 },mess=0xFB03 },
  ffl={ name="f_f_l",unicode={ 0x66,0x66,0x6C },mess=0xFB04 },
  fj={ name="f_j",unicode={ 0x66,0x6A } },
  fk={ name="f_k",unicode={ 0x66,0x6B } },
 }
 local o=allocate {}
 for k,v in next,overloads do
  local name=v.name
  local mess=v.mess
  if name then
   o[name]=v
  end
  if mess then
   o[mess]=v
  end
  o[k]=v
 end
 mappings.overloads=o
end
function mappings.addtounicode(data,filename,checklookups,forceligatures)
 local resources=data.resources
 local unicodes=resources.unicodes
 if not unicodes then
  if trace_mapping then
   report_fonts("no unicode list, quitting tounicode for %a",filename)
  end
  return
 end
 local properties=data.properties
 local descriptions=data.descriptions
 local overloads=mappings.overloads
 unicodes['space']=unicodes['space']  or 32
 unicodes['hyphen']=unicodes['hyphen'] or 45
 unicodes['zwj']=unicodes['zwj'] or 0x200D
 unicodes['zwnj']=unicodes['zwnj']   or 0x200C
 local private=fonts.constructors and fonts.constructors.privateoffset or 0xF0000 
 local unicodevector=fonts.encodings.agl.unicodes or {} 
 local contextvector=fonts.encodings.agl.ctxcodes or {} 
 local missing={}
 local nofmissing=0
 local oparser=nil
 local cidnames=nil
 local cidcodes=nil
 local cidinfo=properties.cidinfo
 local usedmap=cidinfo and fonts.cid.getmap(cidinfo)
 local uparser=makenameparser() 
 if usedmap then
    oparser=usedmap and makenameparser(cidinfo.ordering)
    cidnames=usedmap.names
    cidcodes=usedmap.unicodes
 end
 local ns=0
 local nl=0
 local dlist=sortedkeys(descriptions)
 for i=1,#dlist do
  local du=dlist[i]
  local glyph=descriptions[du]
  local name=glyph.name
  if name then
   local overload=overloads[name] or overloads[du]
   if overload then
    glyph.unicode=overload.unicode
   else
    local gu=glyph.unicode 
    if not gu or gu==-1 or du>=private or (du>=0xE000 and du<=0xF8FF) or du==0xFFFE or du==0xFFFF then
     local unicode=unicodevector[name] or contextvector[name]
     if unicode then
      glyph.unicode=unicode
      ns=ns+1
     end
     if (not unicode) and usedmap then
      local foundindex=lpegmatch(oparser,name)
      if foundindex then
       unicode=cidcodes[foundindex] 
       if unicode then
        glyph.unicode=unicode
        ns=ns+1
       else
        local reference=cidnames[foundindex] 
        if reference then
         local foundindex=lpegmatch(oparser,reference)
         if foundindex then
          unicode=cidcodes[foundindex]
          if unicode then
           glyph.unicode=unicode
           ns=ns+1
          end
         end
         if not unicode or unicode=="" then
          local foundcodes,multiple=lpegmatch(uparser,reference)
          if foundcodes then
           glyph.unicode=foundcodes
           if multiple then
            nl=nl+1
            unicode=true
           else
            ns=ns+1
            unicode=foundcodes
           end
          end
         end
        end
       end
      end
     end
     if not unicode or unicode=="" then
      local split=lpegmatch(namesplitter,name)
      local nsplit=split and #split or 0 
      if nsplit==0 then
      elseif nsplit==1 then
       local base=split[1]
       local u=unicodes[base] or unicodevector[base] or contextvector[name]
       if not u then
       elseif type(u)=="table" then
        if u[1]<private then
         unicode=u
         glyph.unicode=unicode
        end
       elseif u<private then
        unicode=u
        glyph.unicode=unicode
       end
      else
       local t={}
       local n=0
       for l=1,nsplit do
        local base=split[l]
        local u=unicodes[base] or unicodevector[base] or contextvector[name]
        if not u then
         break
        elseif type(u)=="table" then
         if u[1]>=private then
          break
         end
         n=n+1
         t[n]=u[1]
        else
         if u>=private then
          break
         end
         n=n+1
         t[n]=u
        end
       end
       if n>0 then
        if n==1 then
         unicode=t[1]
        else
         unicode=t
        end
        glyph.unicode=unicode
       end
      end
      nl=nl+1
     end
     if not unicode or unicode=="" then
      local foundcodes,multiple=lpegmatch(uparser,name)
      if foundcodes then
       glyph.unicode=foundcodes
       if multiple then
        nl=nl+1
        unicode=true
       else
        ns=ns+1
        unicode=foundcodes
       end
      end
     end
     local r=overloads[unicode]
     if r then
      unicode=r.unicode
      glyph.unicode=unicode
     end
     if not unicode then
      missing[du]=true
      nofmissing=nofmissing+1
     end
    else
    end
   end
  else
   local overload=overloads[du]
   if overload then
    glyph.unicode=overload.unicode
   elseif not glyph.unicode then
    missing[du]=true
    nofmissing=nofmissing+1
   end
  end
 end
 if type(checklookups)=="function" then
  checklookups(data,missing,nofmissing)
 end
 local unicoded=0
 local collected=fonts.handlers.otf.readers.getcomponents(data) 
 local function resolve(glyph,u)
  local n=#u
  for i=1,n do
   if u[i]>private then
    n=0
    break
   end
  end
  if n>0 then
   if n>1 then
    glyph.unicode=u
   else
    glyph.unicode=u[1]
   end
   unicoded=unicoded+1
  end
 end
 if not collected then
 elseif forceligatures or force_ligatures then
  for i=1,#dlist do
   local du=dlist[i]
   if du>=private or (du>=0xE000 and du<=0xF8FF) then
    local u=collected[du] 
    if u then
     resolve(descriptions[du],u)
    end
   end
  end
 else
  for i=1,#dlist do
   local du=dlist[i]
   if du>=private or (du>=0xE000 and du<=0xF8FF) then
    local glyph=descriptions[du]
    if glyph.class=="ligature" and not glyph.unicode then
     local u=collected[du] 
     if u then
       resolve(glyph,u)
     end
    end
   end
  end
 end
 if trace_mapping and unicoded>0 then
  report_fonts("%n ligature tounicode mappings deduced from gsub ligature features",unicoded)
 end
 if trace_mapping then
  for i=1,#dlist do
   local du=dlist[i]
   local glyph=descriptions[du]
   local name=glyph.name or "-"
   local index=glyph.index or 0
   local unicode=glyph.unicode
   if unicode then
    if type(unicode)=="table" then
     local unicodes={}
     for i=1,#unicode do
      unicodes[i]=formatters("%U",unicode[i])
     end
     report_fonts("internal slot %U, name %a, unicode %U, tounicode % t",index,name,du,unicodes)
    else
     report_fonts("internal slot %U, name %a, unicode %U, tounicode %U",index,name,du,unicode)
    end
   else
    report_fonts("internal slot %U, name %a, unicode %U",index,name,du)
   end
  end
 end
 if trace_loading and (ns>0 or nl>0) then
  report_fonts("%s tounicode entries added, ligatures %s",nl+ns,ns)
 end
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['luatex-fonts-syn']={
 version=1.001,
 comment="companion to luatex-*.tex",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
if context then
--removed

end
local fonts=fonts
fonts.names=fonts.names or {}
fonts.names.version=1.001 
fonts.names.basename="luatex-fonts-names"
fonts.names.cache=containers.define("fonts","data",fonts.names.version,true)
local data=nil
local loaded=false
local fileformats={ "lua","tex","other text files" }
function fonts.names.reportmissingbase()
 logs.report("fonts","missing font database, run: mtxrun --script fonts --reload --simple")
 fonts.names.reportmissingbase=nil
end
function fonts.names.reportmissingname()
 logs.report("fonts","unknown font in font database, run: mtxrun --script fonts --reload --simple")
 fonts.names.reportmissingname=nil
end
function fonts.names.resolve(name,sub)
 if not loaded then
  local basename=fonts.names.basename
  if basename and basename~="" then
   data=containers.read(fonts.names.cache,basename)
   if not data then
    basename=file.addsuffix(basename,"lua")
    for i=1,#fileformats do
     local format=fileformats[i]
     local foundname=resolvers.findfile(basename,format) or ""
     if foundname~="" then
      data=dofile(foundname)
      logs.report("fonts","font database '%s' loaded",foundname)
      break
     end
    end
   end
  end
  loaded=true
 end
 if type(data)=="table" and data.version==fonts.names.version then
  local condensed=string.gsub(string.lower(name),"[^%a%d]","")
  local found=data.mappings and data.mappings[condensed]
  if found then
   local fontname,filename,subfont=found[1],found[2],found[3]
   if subfont then
    return filename,fontname
   else
    return filename,false
   end
  elseif fonts.names.reportmissingname then
   fonts.names.reportmissingname()
   return name,false 
  end
 elseif fonts.names.reportmissingbase then
  fonts.names.reportmissingbase()
 end
end
fonts.names.resolvespec=fonts.names.resolve 
function fonts.names.getfilename(askedname,suffix)  
 return ""
end
function fonts.names.ignoredfile(filename) 
 return false 
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['font-vfc']={
 version=1.001,
 comment="companion to font-ini.mkiv and hand-ini.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
local select,type=select,type
local insert=table.insert
local fonts=fonts
local helpers=fonts.helpers
local setmetatableindex=table.setmetatableindex
local makeweak=table.makeweak
local push={ "push" }
local pop={ "pop" }
local dummy={ "comment" }
function helpers.prependcommands(commands,...)
 insert(commands,1,push)
 for i=select("#",...),1,-1 do
  local s=(select(i,...))
  if s then
   insert(commands,1,s)
  end
 end
 insert(commands,pop)
 return commands
end
function helpers.appendcommands(commands,...)
 insert(commands,1,push)
 insert(commands,pop)
 for i=1,select("#",...) do
  local s=(select(i,...))
  if s then
   insert(commands,s)
  end
 end
 return commands
end
function helpers.prependcommandtable(commands,t)
 insert(commands,1,push)
 for i=#t,1,-1 do
  local s=t[i]
  if s then
   insert(commands,1,s)
  end
 end
 insert(commands,pop)
 return commands
end
function helpers.appendcommandtable(commands,t)
 insert(commands,1,push)
 insert(commands,pop)
 for i=1,#t do
  local s=t[i]
  if s then
   insert(commands,s)
  end
 end
 return commands
end
local char=setmetatableindex(function(t,k)
 local v={ "slot",0,k }
 t[k]=v
 return v
end)
local right=setmetatableindex(function(t,k)
 local v={ "right",k }
 t[k]=v
 return v
end)
local left=setmetatableindex(function(t,k)
 local v={ "right",-k }
 t[k]=v
 return v
end)
local down=setmetatableindex(function(t,k)
 local v={ "down",k }
 t[k]=v
 return v
end)
local up=setmetatableindex(function(t,k)
 local v={ "down",-k }
 t[k]=v
 return v
end)
helpers.commands=utilities.storage.allocate {
 char=char,
 right=right,
 left=left,
 down=down,
 up=up,
 push=push,
 pop=pop,
 dummy=dummy,
}

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['font-otr']={
 version=1.001,
 comment="companion to font-ini.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
local next,type,tonumber,rawget=next,type,tonumber,rawget
local byte,lower,char,gsub=string.byte,string.lower,string.char,string.gsub
local fullstrip=string.fullstrip
local floor,round=math.floor,math.round
local P,R,S,C,Cs,Cc,Ct,Carg,Cmt=lpeg.P,lpeg.R,lpeg.S,lpeg.C,lpeg.Cs,lpeg.Cc,lpeg.Ct,lpeg.Carg,lpeg.Cmt
local lpegmatch=lpeg.match
local rshift=bit32.rshift
local setmetatableindex=table.setmetatableindex
local sortedkeys=table.sortedkeys
local sortedhash=table.sortedhash
local stripstring=string.nospaces
local utf16_to_utf8_be=utf.utf16_to_utf8_be
local report=logs.reporter("otf reader")
local report_cmap=logs.reporter("otf reader","cmap")
local trace_cmap=false  trackers.register("otf.cmap",function(v) trace_cmap=v end)
local trace_cmap_details=false  trackers.register("otf.cmap.details",function(v) trace_cmap_details=v end)
fonts=fonts or {}
local handlers=fonts.handlers or {}
fonts.handlers=handlers
local otf=handlers.otf or {}
handlers.otf=otf
local readers=otf.readers or {}
otf.readers=readers
local streamreader=utilities.files   
local streamwriter=utilities.files
readers.streamreader=streamreader
readers.streamwriter=streamwriter
local openfile=streamreader.open
local closefile=streamreader.close
local setposition=streamreader.setposition
local skipshort=streamreader.skipshort
local readbytes=streamreader.readbytes
local readstring=streamreader.readstring
local readbyte=streamreader.readcardinal1  
local readushort=streamreader.readcardinal2  
local readuint=streamreader.readcardinal3  
local readulong=streamreader.readcardinal4
local readshort=streamreader.readinteger2   
local readlong=streamreader.readinteger4   
local readfixed=streamreader.readfixed4
local read2dot14=streamreader.read2dot14  
local readfword=readshort       
local readufword=readushort      
local readoffset=readushort
local readcardinaltable=streamreader.readcardinaltable
local readintegertable=streamreader.readintegertable
function streamreader.readtag(f)
 return lower(stripstring(readstring(f,4)))
end
local short=2
local ushort=2
local ulong=4
directives.register("fonts.streamreader",function()
 streamreader=utilities.streams
 openfile=streamreader.open
 closefile=streamreader.close
 setposition=streamreader.setposition
 skipshort=streamreader.skipshort
 readbytes=streamreader.readbytes
 readstring=streamreader.readstring
 readbyte=streamreader.readcardinal1
 readushort=streamreader.readcardinal2
 readuint=streamreader.readcardinal3
 readulong=streamreader.readcardinal4
 readshort=streamreader.readinteger2
 readlong=streamreader.readinteger4
 readfixed=streamreader.readfixed4
 read2dot14=streamreader.read2dot14
 readfword=readshort
 readufword=readushort
 readoffset=readushort
 readcardinaltable=streamreader.readcardinaltable
 readintegertable=streamreader.readintegertable
 function streamreader.readtag(f)
  return lower(stripstring(readstring(f,4)))
 end
end)
local function readlongdatetime(f)
 local a,b,c,d,e,f,g,h=readbytes(f,8)
 return 0x100000000*d+0x1000000*e+0x10000*f+0x100*g+h
end
local tableversion=0.004
readers.tableversion=tableversion
local privateoffset=fonts.constructors and fonts.constructors.privateoffset or 0xF0000
local reservednames={ [0]="copyright",
 "family",
 "subfamily",
 "uniqueid",
 "fullname",
 "version",
 "postscriptname",
 "trademark",
 "manufacturer",
 "designer",
 "description",
 "vendorurl",
 "designerurl",
 "license",
 "licenseurl",
 "reserved",
 "typographicfamily",
 "typographicsubfamily",
 "compatiblefullname",
 "sampletext",
 "cidfindfontname",
 "wwsfamily",
 "wwssubfamily",
 "lightbackgroundpalette",
 "darkbackgroundpalette",
 "variationspostscriptnameprefix",
}
local platforms={ [0]="unicode",
 "macintosh",
 "iso",
 "windows",
 "custom",
}
local encodings={
 unicode={ [0]="unicode 1.0 semantics",
  "unicode 1.1 semantics",
  "iso/iec 10646",
  "unicode 2.0 bmp",
  "unicode 2.0 full",
  "unicode variation sequences",
  "unicode full repertoire",
 },
 macintosh={ [0]="roman","japanese","chinese (traditional)","korean","arabic","hebrew","greek","russian",
  "rsymbol","devanagari","gurmukhi","gujarati","oriya","bengali","tamil","telugu","kannada",
  "malayalam","sinhalese","burmese","khmer","thai","laotian","georgian","armenian",
  "chinese (simplified)","tibetan","mongolian","geez","slavic","vietnamese","sindhi",
  "uninterpreted",
 },
 iso={ [0]="7-bit ascii",
  "iso 10646",
  "iso 8859-1",
 },
 windows={ [0]="symbol",
  "unicode bmp",
  "shiftjis",
  "prc",
  "big5",
  "wansung",
  "johab",
  "reserved 7",
  "reserved 8",
  "reserved 9",
  "unicode ucs-4",
 },
 custom={
 }
}
local decoders={
 unicode={},
 macintosh={},
 iso={},
 windows={
  ["unicode semantics"]=utf16_to_utf8_be,
  ["unicode bmp"]=utf16_to_utf8_be,
  ["unicode full"]=utf16_to_utf8_be,
  ["unicode 1.0 semantics"]=utf16_to_utf8_be,
  ["unicode 1.1 semantics"]=utf16_to_utf8_be,
  ["unicode 2.0 bmp"]=utf16_to_utf8_be,
  ["unicode 2.0 full"]=utf16_to_utf8_be,
  ["unicode variation sequences"]=utf16_to_utf8_be,
  ["unicode full repertoire"]=utf16_to_utf8_be,
 },
 custom={},
}
local languages={
 unicode={
  [  0]="english",
 },
 macintosh={
  [  0]="english",
 },
 iso={},
 windows={
  [0x0409]="english - united states",
 },
 custom={},
}
local standardromanencoding={ [0]=
 "notdef",".null","nonmarkingreturn","space","exclam","quotedbl",
 "numbersign","dollar","percent","ampersand","quotesingle","parenleft",
 "parenright","asterisk","plus","comma","hyphen","period","slash",
 "zero","one","two","three","four","five","six","seven","eight",
 "nine","colon","semicolon","less","equal","greater","question","at",
 "A","B","C","D","E","F","G","H","I","J","K","L","M","N","O",
 "P","Q","R","S","T","U","V","W","X","Y","Z","bracketleft",
 "backslash","bracketright","asciicircum","underscore","grave","a","b",
 "c","d","e","f","g","h","i","j","k","l","m","n","o","p","q",
 "r","s","t","u","v","w","x","y","z","braceleft","bar",
 "braceright","asciitilde","Adieresis","Aring","Ccedilla","Eacute",
 "Ntilde","Odieresis","Udieresis","aacute","agrave","acircumflex",
 "adieresis","atilde","aring","ccedilla","eacute","egrave",
 "ecircumflex","edieresis","iacute","igrave","icircumflex","idieresis",
 "ntilde","oacute","ograve","ocircumflex","odieresis","otilde","uacute",
 "ugrave","ucircumflex","udieresis","dagger","degree","cent","sterling",
 "section","bullet","paragraph","germandbls","registered","copyright",
 "trademark","acute","dieresis","notequal","AE","Oslash","infinity",
 "plusminus","lessequal","greaterequal","yen","mu","partialdiff",
 "summation","product","pi","integral","ordfeminine","ordmasculine",
 "Omega","ae","oslash","questiondown","exclamdown","logicalnot",
 "radical","florin","approxequal","Delta","guillemotleft",
 "guillemotright","ellipsis","nonbreakingspace","Agrave","Atilde",
 "Otilde","OE","oe","endash","emdash","quotedblleft","quotedblright",
 "quoteleft","quoteright","divide","lozenge","ydieresis","Ydieresis",
 "fraction","currency","guilsinglleft","guilsinglright","fi","fl",
 "daggerdbl","periodcentered","quotesinglbase","quotedblbase",
 "perthousand","Acircumflex","Ecircumflex","Aacute","Edieresis","Egrave",
 "Iacute","Icircumflex","Idieresis","Igrave","Oacute","Ocircumflex",
 "apple","Ograve","Uacute","Ucircumflex","Ugrave","dotlessi",
 "circumflex","tilde","macron","breve","dotaccent","ring","cedilla",
 "hungarumlaut","ogonek","caron","Lslash","lslash","Scaron","scaron",
 "Zcaron","zcaron","brokenbar","Eth","eth","Yacute","yacute","Thorn",
 "thorn","minus","multiply","onesuperior","twosuperior","threesuperior",
 "onehalf","onequarter","threequarters","franc","Gbreve","gbreve",
 "Idotaccent","Scedilla","scedilla","Cacute","cacute","Ccaron","ccaron",
 "dcroat",
}
local weights={
 [100]="thin",
 [200]="extralight",
 [300]="light",
 [400]="normal",
 [500]="medium",
 [600]="semibold",
 [700]="bold",
 [800]="extrabold",
 [900]="black",
}
local widths={
 [1]="ultracondensed",
 [2]="extracondensed",
 [3]="condensed",
 [4]="semicondensed",
 [5]="normal",
 [6]="semiexpanded",
 [7]="expanded",
 [8]="extraexpanded",
 [9]="ultraexpanded",
}
setmetatableindex(weights,function(t,k)
 local r=floor((k+50)/100)*100
 local v=(r>900 and "black") or rawget(t,r) or "normal"
 return v
end)
setmetatableindex(widths,function(t,k)
 return "normal"
end)
local panoseweights={
 [ 0]="normal",
 [ 1]="normal",
 [ 2]="verylight",
 [ 3]="light",
 [ 4]="thin",
 [ 5]="book",
 [ 6]="medium",
 [ 7]="demi",
 [ 8]="bold",
 [ 9]="heavy",
 [10]="black",
}
local panosewidths={
 [ 0]="normal",
 [ 1]="normal",
 [ 2]="normal",
 [ 3]="normal",
 [ 4]="normal",
 [ 5]="expanded",
 [ 6]="condensed",
 [ 7]="veryexpanded",
 [ 8]="verycondensed",
 [ 9]="monospaced",
}
local helpers={}
readers.helpers=helpers
local function gotodatatable(f,fontdata,tag,criterium)
 if criterium and f then
  local tables=fontdata.tables
  if tables then
   local datatable=tables[tag]
   if datatable then
    local tableoffset=datatable.offset
    setposition(f,tableoffset)
    return tableoffset
   end
  else
   report("no tables")
  end
 end
end
local function reportskippedtable(f,fontdata,tag,criterium)
 if criterium and f then
  local tables=fontdata.tables
  if tables then
   local datatable=tables[tag]
   if datatable then
    report("loading of table %a skipped",tag)
   end
  else
   report("no tables")
  end
 end
end
local function setvariabledata(fontdata,tag,data)
 local variabledata=fontdata.variabledata
 if variabledata then
  variabledata[tag]=data
 else
  fontdata.variabledata={ [tag]=data }
 end
end
helpers.gotodatatable=gotodatatable
helpers.setvariabledata=setvariabledata
helpers.reportskippedtable=reportskippedtable
local platformnames={
 postscriptname=true,
 fullname=true,
 family=true,
 subfamily=true,
 typographicfamily=true,
 typographicsubfamily=true,
 compatiblefullname=true,
}
local platformextras={
 uniqueid=true,
 version=true,
 copyright=true,
 license=true,
 licenseurl=true,
 manufacturer=true,
 vendorurl=true,
}
function readers.name(f,fontdata,specification)
 local tableoffset=gotodatatable(f,fontdata,"name",true)
 if tableoffset then
  local format=readushort(f)
  local nofnames=readushort(f)
  local offset=readushort(f)
  local start=tableoffset+offset
  local namelists={
   unicode={},
   windows={},
   macintosh={},
  }
  for i=1,nofnames do
   local platform=platforms[readushort(f)]
   if platform then
    local namelist=namelists[platform]
    if namelist then
     local encoding=readushort(f)
     local language=readushort(f)
     local encodings=encodings[platform]
     local languages=languages[platform]
     if encodings and languages then
      local encoding=encodings[encoding]
      local language=languages[language]
      if encoding and language then
       local index=readushort(f)
       local name=reservednames[index]
       namelist[#namelist+1]={
        platform=platform,
        encoding=encoding,
        language=language,
        name=name,
        index=index,
        length=readushort(f),
        offset=start+readushort(f),
       }
      else
       skipshort(f,3)
      end
     else
      skipshort(f,3)
     end
    else
     skipshort(f,5)
    end
   else
    skipshort(f,5)
   end
  end
  local names={}
  local done={}
  local extras={}
  local function decoded(platform,encoding,content)
   local decoder=decoders[platform]
   if decoder then
    decoder=decoder[encoding]
   end
   if decoder then
    return decoder(content)
   else
    return content
   end
  end
  local function filter(platform,e,l)
   local namelist=namelists[platform]
   for i=1,#namelist do
    local name=namelist[i]
    local nametag=name.name
    local index=name.index
    if not done[nametag or i] then
     local encoding=name.encoding
     local language=name.language
     if (not e or encoding==e) and (not l or language==l) then
      setposition(f,name.offset)
      local content=decoded(platform,encoding,readstring(f,name.length))
      if nametag then
       names[nametag]={
        content=content,
        platform=platform,
        encoding=encoding,
        language=language,
       }
      end
      extras[index]=content
      done[nametag or i]=true
     end
    end
   end
  end
  filter("windows","unicode bmp","english - united states")
  filter("macintosh","roman","english")
  filter("windows")
  filter("macintosh")
  filter("unicode")
  fontdata.names=names
  fontdata.extras=extras
  if specification.platformnames then
   local collected={}
   local platformextras=specification.platformextras and platformextras
   for platform,namelist in next,namelists do
    local filtered=false
    for i=1,#namelist do
     local entry=namelist[i]
     local name=entry.name
     if platformnames[name] or (platformextras and platformextras[name]) then
      setposition(f,entry.offset)
      local content=decoded(platform,entry.encoding,readstring(f,entry.length))
      if filtered then
       filtered[name]=content
      else
       filtered={ [name]=content }
      end
     end
    end
    if filtered then
     collected[platform]=filtered
    end
   end
   fontdata.platformnames=collected
  end
 else
  fontdata.names={}
 end
end
local validutf=lpeg.patterns.validutf8
local function getname(fontdata,key)
 local names=fontdata.names
 if names then
  local value=names[key]
  if value then
   local content=value.content
   return lpegmatch(validutf,content) and content or nil
  end
 end
end
readers["os/2"]=function(f,fontdata)
 local tableoffset=gotodatatable(f,fontdata,"os/2",true)
 if tableoffset then
  local version=readushort(f)
  local windowsmetrics={
   version=version,
   averagewidth=readshort(f),
   weightclass=readushort(f),
   widthclass=readushort(f),
   fstype=readushort(f),
   subscriptxsize=readshort(f),
   subscriptysize=readshort(f),
   subscriptxoffset=readshort(f),
   subscriptyoffset=readshort(f),
   superscriptxsize=readshort(f),
   superscriptysize=readshort(f),
   superscriptxoffset=readshort(f),
   superscriptyoffset=readshort(f),
   strikeoutsize=readshort(f),
   strikeoutpos=readshort(f),
   familyclass=readshort(f),
   panose={ readbytes(f,10) },
   unicoderanges={ readulong(f),readulong(f),readulong(f),readulong(f) },
   vendor=readstring(f,4),
   fsselection=readushort(f),
   firstcharindex=readushort(f),
   lastcharindex=readushort(f),
   typoascender=readshort(f),
   typodescender=readshort(f),
   typolinegap=readshort(f),
   winascent=readushort(f),
   windescent=readushort(f),
  }
  if version>=1 then
   windowsmetrics.codepageranges={ readulong(f),readulong(f) }
  end
  if version>=2 then
   windowsmetrics.xheight=readshort(f)
   windowsmetrics.capheight=readshort(f)
   windowsmetrics.defaultchar=readushort(f)
   windowsmetrics.breakchar=readushort(f)
  end
  windowsmetrics.weight=windowsmetrics.weightclass and weights[windowsmetrics.weightclass]
  windowsmetrics.width=windowsmetrics.widthclass and  widths [windowsmetrics.widthclass]
  windowsmetrics.panoseweight=panoseweights[windowsmetrics.panose[3]]
  windowsmetrics.panosewidth=panosewidths [windowsmetrics.panose[4]]
  fontdata.windowsmetrics=windowsmetrics
 else
  fontdata.windowsmetrics={}
 end
end
readers.head=function(f,fontdata)
 local tableoffset=gotodatatable(f,fontdata,"head",true)
 if tableoffset then
  local version=readulong(f)
  local fontversion=readulong(f)
  local fontheader={
   version=version,
   fontversion=number.to16dot16(fontversion),
   fontversionnumber=fontversion,
   checksum=readushort(f)*0x10000+readushort(f),
   magic=readulong(f),
   flags=readushort(f),
   units=readushort(f),
   created=readlongdatetime(f),
   modified=readlongdatetime(f),
   xmin=readshort(f),
   ymin=readshort(f),
   xmax=readshort(f),
   ymax=readshort(f),
   macstyle=readushort(f),
   smallpixels=readushort(f),
   directionhint=readshort(f),
   indextolocformat=readshort(f),
   glyphformat=readshort(f),
  }
  fontdata.fontheader=fontheader
 else
  fontdata.fontheader={}
 end
 fontdata.nofglyphs=0
end
readers.hhea=function(f,fontdata,specification)
 local tableoffset=gotodatatable(f,fontdata,"hhea",specification.details)
 if tableoffset then
  fontdata.horizontalheader={
   version=readulong(f),
   ascender=readfword(f),
   descender=readfword(f),
   linegap=readfword(f),
   maxadvancewidth=readufword(f),
   minleftsidebearing=readfword(f),
   minrightsidebearing=readfword(f),
   maxextent=readfword(f),
   caretsloperise=readshort(f),
   caretsloperun=readshort(f),
   caretoffset=readshort(f),
   reserved_1=readshort(f),
   reserved_2=readshort(f),
   reserved_3=readshort(f),
   reserved_4=readshort(f),
   metricdataformat=readshort(f),
   nofmetrics=readushort(f),
  }
 else
  fontdata.horizontalheader={
   nofmetrics=0,
  }
 end
end
readers.vhea=function(f,fontdata,specification)
 local tableoffset=gotodatatable(f,fontdata,"vhea",specification.details)
 if tableoffset then
  fontdata.verticalheader={
   version=readulong(f),
   ascender=readfword(f),
   descender=readfword(f),
   linegap=readfword(f),
   maxadvanceheight=readufword(f),
   mintopsidebearing=readfword(f),
   minbottomsidebearing=readfword(f),
   maxextent=readfword(f),
   caretsloperise=readshort(f),
   caretsloperun=readshort(f),
   caretoffset=readshort(f),
   reserved_1=readshort(f),
   reserved_2=readshort(f),
   reserved_3=readshort(f),
   reserved_4=readshort(f),
   metricdataformat=readshort(f),
   nofmetrics=readushort(f),
  }
 else
  fontdata.verticalheader={
   nofmetrics=0,
  }
 end
end
readers.maxp=function(f,fontdata,specification)
 local tableoffset=gotodatatable(f,fontdata,"maxp",specification.details)
 if tableoffset then
  local version=readulong(f)
  local nofglyphs=readushort(f)
  fontdata.nofglyphs=nofglyphs
  if version==0x00005000 then
   fontdata.maximumprofile={
    version=version,
    nofglyphs=nofglyphs,
   }
  elseif version==0x00010000 then
   fontdata.maximumprofile={
    version=version,
    nofglyphs=nofglyphs,
    points=readushort(f),
    contours=readushort(f),
    compositepoints=readushort(f),
    compositecontours=readushort(f),
    zones=readushort(f),
    twilightpoints=readushort(f),
    storage=readushort(f),
    functiondefs=readushort(f),
    instructiondefs=readushort(f),
    stackelements=readushort(f),
    sizeofinstructions=readushort(f),
    componentelements=readushort(f),
    componentdepth=readushort(f),
   }
  else
   fontdata.maximumprofile={
    version=version,
    nofglyphs=0,
   }
  end
 end
end
readers.hmtx=function(f,fontdata,specification)
 local tableoffset=gotodatatable(f,fontdata,"hmtx",specification.glyphs)
 if tableoffset then
  local horizontalheader=fontdata.horizontalheader
  local nofmetrics=horizontalheader.nofmetrics
  local glyphs=fontdata.glyphs
  local nofglyphs=fontdata.nofglyphs
  local width=0 
  local leftsidebearing=0
  for i=0,nofmetrics-1 do
   local glyph=glyphs[i]
   width=readshort(f) 
   leftsidebearing=readshort(f)
   if width~=0 then
    glyph.width=width
   end
  end
  for i=nofmetrics,nofglyphs-1 do
   local glyph=glyphs[i]
   if width~=0 then
    glyph.width=width
   end
  end
 end
end
readers.vmtx=function(f,fontdata,specification)
 local tableoffset=gotodatatable(f,fontdata,"vmtx",specification.glyphs)
 if tableoffset then
  local verticalheader=fontdata.verticalheader
  local nofmetrics=verticalheader.nofmetrics
  local glyphs=fontdata.glyphs
  local nofglyphs=fontdata.nofglyphs
  local vheight=0
  local vdefault=verticalheader.ascender-verticalheader.descender
  local topsidebearing=0
  for i=0,nofmetrics-1 do
   local glyph=glyphs[i]
   vheight=readushort(f)
   topsidebearing=readshort(f)
   if vheight~=0 and vheight~=vdefault then
    glyph.vheight=vheight
   end
   if topsidebearing~=0 then
    glyph.tsb=topsidebearing
   end
  end
  for i=nofmetrics,nofglyphs-1 do
   local glyph=glyphs[i]
   if vheight~=0 and vheight~=vdefault then
    glyph.vheight=vheight
   end
  end
 end
end
readers.vorg=function(f,fontdata,specification)
 reportskippedtable(f,fontdata,"vorg",specification.glyphs)
end
readers.post=function(f,fontdata,specification)
 local tableoffset=gotodatatable(f,fontdata,"post",true)
 if tableoffset then
  local version=readulong(f)
  fontdata.postscript={
   version=version,
   italicangle=round(1000*readfixed(f))/1000,
   underlineposition=readfword(f),
   underlinethickness=readfword(f),
   monospaced=readulong(f),
   minmemtype42=readulong(f),
   maxmemtype42=readulong(f),
   minmemtype1=readulong(f),
   maxmemtype1=readulong(f),
  }
  if not specification.glyphs then
  elseif version==0x00010000 then
   for index=0,#standardromanencoding do
    glyphs[index].name=standardromanencoding[index]
   end
  elseif version==0x00020000 then
   local glyphs=fontdata.glyphs
   local nofglyphs=readushort(f)
   local indices={}
   local names={}
   local maxnames=0
   for i=0,nofglyphs-1 do
    local nameindex=readushort(f)
    if nameindex>=258 then
     maxnames=maxnames+1
     nameindex=nameindex-257
     indices[nameindex]=i
    else
     glyphs[i].name=standardromanencoding[nameindex]
    end
   end
   for i=1,maxnames do
    local mapping=indices[i]
    if not mapping then
     report("quit post name fetching at %a of %a: %s",i,maxnames,"no index")
     break
    else
     local length=readbyte(f)
     if length>0 then
      glyphs[mapping].name=readstring(f,length)
     else
      report("quit post name fetching at %a of %a: %s",i,maxnames,"overflow")
      break
     end
    end
   end
  end
 else
  fontdata.postscript={}
 end
end
readers.cff=function(f,fontdata,specification)
 reportskippedtable(f,fontdata,"cff",specification.glyphs)
end
local formatreaders={}
local duplicatestoo=true
local sequence={
 { 3,1,4 },
 { 3,10,12 },
 { 0,3,4 },
 { 0,3,12 },
 { 0,1,4 },
 { 0,1,12 },
 { 0,0,6 },
 { 3,0,6 },
 { 3,0,4 },
 { 0,5,14 },
 { 0,4,12 },
 { 3,10,13 },
}
local supported={}
for i=1,#sequence do
 local si=sequence[i]
 local sp,se,sf=si[1],si[2],si[3]
 local p=supported[sp]
 if not p then
  p={}
  supported[sp]=p
 end
 local e=p[se]
 if not e then
  e={}
  p[se]=e
 end
 e[sf]=true
end
formatreaders[4]=function(f,fontdata,offset)
 setposition(f,offset+2)
 local length=readushort(f) 
 local language=readushort(f)
 local nofsegments=readushort(f)/2
 skipshort(f,3)
 local mapping=fontdata.mapping
 local glyphs=fontdata.glyphs
 local duplicates=fontdata.duplicates
 local nofdone=0
 local endchars=readcardinaltable(f,nofsegments,ushort)
 local reserved=readushort(f) 
 local startchars=readcardinaltable(f,nofsegments,ushort)
 local deltas=readcardinaltable(f,nofsegments,ushort)
 local offsets=readcardinaltable(f,nofsegments,ushort)
 local size=(length-2*2-5*2-4*2*nofsegments)/2
 local indices=readcardinaltable(f,size-1,ushort)
 for segment=1,nofsegments do
  local startchar=startchars[segment]
  local endchar=endchars[segment]
  local offset=offsets[segment]
  local delta=deltas[segment]
  if startchar==0xFFFF and endchar==0xFFFF then
  elseif startchar==0xFFFF and offset==0 then
  elseif offset==0xFFFF then
  elseif offset==0 then
   if trace_cmap_details then
    report("format 4.%i segment %2i from %C upto %C at index %H",1,segment,startchar,endchar,(startchar+delta)%65536)
   end
   for unicode=startchar,endchar do
    local index=(unicode+delta)%65536
    if index and index>0 then
     local glyph=glyphs[index]
     if glyph then
      local gu=glyph.unicode
      if not gu then
       glyph.unicode=unicode
       nofdone=nofdone+1
      elseif gu~=unicode then
       if duplicatestoo then
        local d=duplicates[gu]
        if d then
         d[unicode]=true
        else
         duplicates[gu]={ [unicode]=true }
        end
       else
        report("duplicate case 1: %C %04i %s",unicode,index,glyphs[index].name)
       end
      end
      if not mapping[index] then
       mapping[index]=unicode
      end
     end
    end
   end
  else
   local shift=(segment-nofsegments+offset/2)-startchar
   if trace_cmap_details then
    report_cmap("format 4.%i segment %2i from %C upto %C at index %H",0,segment,startchar,endchar,(startchar+delta)%65536)
   end
   for unicode=startchar,endchar do
    local slot=shift+unicode
    local index=indices[slot]
    if index and index>0 then
     index=(index+delta)%65536
     local glyph=glyphs[index]
     if glyph then
      local gu=glyph.unicode
      if not gu then
       glyph.unicode=unicode
       nofdone=nofdone+1
      elseif gu~=unicode then
       if duplicatestoo then
        local d=duplicates[gu]
        if d then
         d[unicode]=true
        else
         duplicates[gu]={ [unicode]=true }
        end
       else
        report("duplicate case 2: %C %04i %s",unicode,index,glyphs[index].name)
       end
      end
      if not mapping[index] then
       mapping[index]=unicode
      end
     end
    end
   end
  end
 end
 return nofdone
end
formatreaders[6]=function(f,fontdata,offset)
 setposition(f,offset) 
 local format=readushort(f)
 local length=readushort(f)
 local language=readushort(f)
 local mapping=fontdata.mapping
 local glyphs=fontdata.glyphs
 local duplicates=fontdata.duplicates
 local start=readushort(f)
 local count=readushort(f)
 local stop=start+count-1
 local nofdone=0
 if trace_cmap_details then
  report_cmap("format 6 from %C to %C",2,start,stop)
 end
 for unicode=start,stop do
  local index=readushort(f)
  if index>0 then
   local glyph=glyphs[index]
   if glyph then
    local gu=glyph.unicode
    if not gu then
     glyph.unicode=unicode
     nofdone=nofdone+1
    elseif gu~=unicode then
    end
    if not mapping[index] then
     mapping[index]=unicode
    end
   end
  end
 end
 return nofdone
end
formatreaders[12]=function(f,fontdata,offset)
 setposition(f,offset+2+2+4+4) 
 local mapping=fontdata.mapping
 local glyphs=fontdata.glyphs
 local duplicates=fontdata.duplicates
 local nofgroups=readulong(f)
 local nofdone=0
 for i=1,nofgroups do
  local first=readulong(f)
  local last=readulong(f)
  local index=readulong(f)
  if trace_cmap_details then
   report_cmap("format 12 from %C to %C starts at index %i",first,last,index)
  end
  for unicode=first,last do
   local glyph=glyphs[index]
   if glyph then
    local gu=glyph.unicode
    if not gu then
     glyph.unicode=unicode
     nofdone=nofdone+1
    elseif gu~=unicode then
     local d=duplicates[gu]
     if d then
      d[unicode]=true
     else
      duplicates[gu]={ [unicode]=true }
     end
    end
    if not mapping[index] then
     mapping[index]=unicode
    end
   end
   index=index+1
  end
 end
 return nofdone
end
formatreaders[13]=function(f,fontdata,offset)
 setposition(f,offset+2+2+4+4) 
 local mapping=fontdata.mapping
 local glyphs=fontdata.glyphs
 local duplicates=fontdata.duplicates
 local nofgroups=readulong(f)
 local nofdone=0
 for i=1,nofgroups do
  local first=readulong(f)
  local last=readulong(f)
  local index=readulong(f)
  if first<privateoffset then
   if trace_cmap_details then
    report_cmap("format 13 from %C to %C get index %i",first,last,index)
   end
   local glyph=glyphs[index]
   local unicode=glyph.unicode
   if not unicode then
    unicode=first
    glyph.unicode=unicode
    first=first+1
   end
   local list=duplicates[unicode]
   mapping[index]=unicode
   if not list then
    list={}
    duplicates[unicode]=list
   end
   if last>=privateoffset then
    local limit=privateoffset-1
    report("format 13 from %C to %C pruned to %C",first,last,limit)
    last=limit
   end
   for unicode=first,last do
    list[unicode]=true
   end
   nofdone=nofdone+last-first+1
  else
   report("format 13 from %C to %C ignored",first,last)
  end
 end
 return nofdone
end
formatreaders[14]=function(f,fontdata,offset)
 if offset and offset~=0 then
  setposition(f,offset)
  local format=readushort(f)
  local length=readulong(f)
  local nofrecords=readulong(f)
  local records={}
  local variants={}
  local nofdone=0
  fontdata.variants=variants
  for i=1,nofrecords do
   records[i]={
    selector=readuint(f),
    default=readulong(f),
    other=readulong(f),
   }
  end
  for i=1,nofrecords do
   local record=records[i]
   local selector=record.selector
   local default=record.default
   local other=record.other
   local other=record.other
   if other~=0 then
    setposition(f,offset+other)
    local mapping={}
    local count=readulong(f)
    for i=1,count do
     mapping[readuint(f)]=readushort(f)
    end
    nofdone=nofdone+count
    variants[selector]=mapping
   end
  end
  return nofdone
 else
  return 0
 end
end
local function checkcmap(f,fontdata,records,platform,encoding,format)
 local pdata=records[platform]
 if not pdata then
  if trace_cmap_details then
   report_cmap("skipped, %s, p=%i e=%i f=%i","no platform",platform,encoding,format)
  end
  return 0
 end
 local edata=pdata[encoding]
 if not edata then
  if trace_cmap_details then
   report_cmap("skipped, %s, p=%i e=%i f=%i","no encoding",platform,encoding,format)
  end
  return 0
 end
 local fdata=edata[format]
 if not fdata then
  if trace_cmap_details then
   report_cmap("skipped, %s, p=%i e=%i f=%i","no format",platform,encoding,format)
  end
  return 0
 elseif type(fdata)~="number" then
  if trace_cmap_details then
   report_cmap("skipped, %s, p=%i e=%i f=%i","already done",platform,encoding,format)
  end
  return 0
 end
 edata[format]=true 
 local reader=formatreaders[format]
 if not reader then
  if trace_cmap_details then
   report_cmap("skipped, %s, p=%i e=%i f=%i","unsupported format",platform,encoding,format)
  end
  return 0
 end
 local n=reader(f,fontdata,fdata) or 0
 if trace_cmap_details or trace_cmap then
  local p=platforms[platform]
  local e=encodings[p]
  report_cmap("checked, platform %i (%s), encoding %i (%s), format %i, new unicodes %i",
   platform,p,encoding,e and e[encoding] or "?",format,n)
 end
 return n
end
function readers.cmap(f,fontdata,specification)
 local tableoffset=gotodatatable(f,fontdata,"cmap",specification.glyphs)
 if tableoffset then
  local version=readushort(f)
  local noftables=readushort(f)
  local records={}
  local unicodecid=false
  local variantcid=false
  local variants={}
  local duplicates=fontdata.duplicates or {}
  fontdata.duplicates=duplicates
  for i=1,noftables do
   local platform=readushort(f)
   local encoding=readushort(f)
   local offset=readulong(f)
   local record=records[platform]
   if not record then
    records[platform]={
     [encoding]={
      offsets={ offset },
      formats={},
     }
    }
   else
    local subtables=record[encoding]
    if not subtables then
     record[encoding]={
      offsets={ offset },
      formats={},
     }
    else
     local offsets=subtables.offsets
     offsets[#offsets+1]=offset
    end
   end
  end
  if trace_cmap then
   report("found cmaps:")
  end
  for platform,record in sortedhash(records) do
   local p=platforms[platform]
   local e=encodings[p]
   local sp=supported[platform]
   local ps=p or "?"
   if trace_cmap then
    if sp then
     report("  platform %i: %s",platform,ps)
    else
     report("  platform %i: %s (unsupported)",platform,ps)
    end
   end
   for encoding,subtables in sortedhash(record) do
    local se=sp and sp[encoding]
    local es=e and e[encoding] or "?"
    if trace_cmap then
     if se then
      report("    encoding %i: %s",encoding,es)
     else
      report("    encoding %i: %s (unsupported)",encoding,es)
     end
    end
    local offsets=subtables.offsets
    local formats=subtables.formats
    for i=1,#offsets do
     local offset=tableoffset+offsets[i]
     setposition(f,offset)
     formats[readushort(f)]=offset
    end
    record[encoding]=formats
    if trace_cmap then
     local list=sortedkeys(formats)
     for i=1,#list do
      if not (se and se[list[i]]) then
       list[i]=list[i].." (unsupported)"
      end
     end
     report("      formats: % t",list)
    end
   end
  end
  local ok=false
  for i=1,#sequence do
   local si=sequence[i]
   local sp,se,sf=si[1],si[2],si[3]
   if checkcmap(f,fontdata,records,sp,se,sf)>0 then
    ok=true
   end
  end
  if not ok then
   report("no useable unicode cmap found")
  end
  fontdata.cidmaps={
   version=version,
   noftables=noftables,
   records=records,
  }
 else
  fontdata.cidmaps={}
 end
end
function readers.loca(f,fontdata,specification)
 reportskippedtable(f,fontdata,"loca",specification.glyphs)
end
function readers.glyf(f,fontdata,specification) 
 reportskippedtable(f,fontdata,"glyf",specification.glyphs)
end
function readers.colr(f,fontdata,specification)
 reportskippedtable(f,fontdata,"colr",specification.glyphs)
end
function readers.cpal(f,fontdata,specification)
 reportskippedtable(f,fontdata,"cpal",specification.glyphs)
end
function readers.svg(f,fontdata,specification)
 reportskippedtable(f,fontdata,"svg",specification.glyphs)
end
function readers.sbix(f,fontdata,specification)
 reportskippedtable(f,fontdata,"sbix",specification.glyphs)
end
function readers.cbdt(f,fontdata,specification)
 reportskippedtable(f,fontdata,"cbdt",specification.glyphs)
end
function readers.cblc(f,fontdata,specification)
 reportskippedtable(f,fontdata,"cblc",specification.glyphs)
end
function readers.ebdt(f,fontdata,specification)
 reportskippedtable(f,fontdata,"ebdt",specification.glyphs)
end
function readers.ebsc(f,fontdata,specification)
 reportskippedtable(f,fontdata,"ebsc",specification.glyphs)
end
function readers.eblc(f,fontdata,specification)
 reportskippedtable(f,fontdata,"eblc",specification.glyphs)
end
function readers.kern(f,fontdata,specification)
 local tableoffset=gotodatatable(f,fontdata,"kern",specification.kerns)
 if tableoffset then
  local version=readushort(f)
  local noftables=readushort(f)
  for i=1,noftables do
   local version=readushort(f)
   local length=readushort(f)
   local coverage=readushort(f)
   local format=rshift(coverage,8) 
   if format==0 then
    local nofpairs=readushort(f)
    local searchrange=readushort(f)
    local entryselector=readushort(f)
    local rangeshift=readushort(f)
    local kerns={}
    local glyphs=fontdata.glyphs
    for i=1,nofpairs do
     local left=readushort(f)
     local right=readushort(f)
     local kern=readfword(f)
     local glyph=glyphs[left]
     local kerns=glyph.kerns
     if kerns then
      kerns[right]=kern
     else
      glyph.kerns={ [right]=kern }
     end
    end
   elseif format==2 then
    report("todo: kern classes")
   else
    report("todo: kerns")
   end
  end
 end
end
function readers.gdef(f,fontdata,specification)
 reportskippedtable(f,fontdata,"gdef",specification.details)
end
function readers.gsub(f,fontdata,specification)
 reportskippedtable(f,fontdata,"gsub",specification.details)
end
function readers.gpos(f,fontdata,specification)
 reportskippedtable(f,fontdata,"gpos",specification.details)
end
function readers.math(f,fontdata,specification)
 reportskippedtable(f,fontdata,"math",specification.details)
end
local function getinfo(maindata,sub,platformnames,rawfamilynames,metricstoo,instancenames)
 local fontdata=sub and maindata.subfonts and maindata.subfonts[sub] or maindata
 local names=fontdata.names
 local info=nil
 if names then
  local metrics=fontdata.windowsmetrics or {}
  local postscript=fontdata.postscript  or {}
  local fontheader=fontdata.fontheader  or {}
  local cffinfo=fontdata.cffinfo  or {}
  local verticalheader=fontdata.verticalheader or {}
  local filename=fontdata.filename
  local weight=getname(fontdata,"weight") or (cffinfo and cffinfo.weight) or (metrics and metrics.weight)
  local width=getname(fontdata,"width")  or (cffinfo and cffinfo.width ) or (metrics and metrics.width )
  local fontname=getname(fontdata,"postscriptname")
  local fullname=getname(fontdata,"fullname")
  local family=getname(fontdata,"family")
  local subfamily=getname(fontdata,"subfamily")
  local familyname=getname(fontdata,"typographicfamily")
  local subfamilyname=getname(fontdata,"typographicsubfamily")
  local compatiblename=getname(fontdata,"compatiblefullname") 
  if rawfamilynames then
  else
   if not familyname then familyname=family end
   if not subfamilyname then subfamilyname=subfamily end
  end
  if platformnames then
   platformnames=fontdata.platformnames
  end
  if instancenames then
   local variabledata=fontdata.variabledata
   if variabledata then
    local instances=variabledata and variabledata.instances
    if instances then
     instancenames={}
     for i=1,#instances do
      instancenames[i]=lower(stripstring(instances[i].subfamily))
     end
    else
     instancenames=nil
    end
   else
    instancenames=nil
   end
  end
  info={ 
   subfontindex=fontdata.subfontindex or sub or 0,
   version=getname(fontdata,"version"),
   fontname=fontname,
   fullname=fullname,
   family=family,
   subfamily=subfamily,
   familyname=familyname,
   subfamilyname=subfamilyname,
   compatiblename=compatiblename,
   weight=weight and lower(weight),
   width=width and lower(width),
   pfmweight=metrics.weightclass or 400,
   pfmwidth=metrics.widthclass or 5,
   panosewidth=metrics.panosewidth,
   panoseweight=metrics.panoseweight,
   italicangle=postscript.italicangle or 0,
   units=fontheader.units or 0,
   designsize=fontdata.designsize,
   minsize=fontdata.minsize,
   maxsize=fontdata.maxsize,
   boundingbox=fontheader and { fontheader.xmin or 0,fontheader.ymin or 0,fontheader.xmax or 0,fontheader.ymax or 0 } or nil,
   monospaced=(tonumber(postscript.monospaced or 0)>0) or metrics.panosewidth=="monospaced",
   averagewidth=metrics.averagewidth,
   xheight=metrics.xheight,
   capheight=metrics.capheight or fontdata.maxy,
   ascender=metrics.typoascender,
   descender=metrics.typodescender,
   platformnames=platformnames or nil,
   instancenames=instancenames or nil,
   tableoffsets=fontdata.tableoffsets,
   defaultvheight=(verticalheader.ascender or 0)-(verticalheader.descender or 0)
  }
  if metricstoo then
   local keys={
    "version",
    "ascender","descender","linegap",
    "maxadvancewidth","maxadvanceheight","maxextent",
    "minbottomsidebearing","mintopsidebearing",
   }
   local h=fontdata.horizontalheader or {}
   local v=fontdata.verticalheader   or {}
   if h then
    local th={}
    local tv={}
    for i=1,#keys do
     local key=keys[i]
     th[key]=h[key] or 0
     tv[key]=v[key] or 0
    end
    info.horizontalmetrics=th
    info.verticalmetrics=tv
   end
  end
 elseif n then
  info={
   filename=fontdata.filename,
   comment="there is no info for subfont "..n,
  }
 else
  info={
   filename=fontdata.filename,
   comment="there is no info",
  }
 end
 return info
end
local function loadtables(f,specification,offset)
 if offset then
  setposition(f,offset)
 end
 local tables={}
 local basename=file.basename(specification.filename)
 local filesize=specification.filesize
 local filetime=specification.filetime
 local fontdata={ 
  filename=basename,
  filesize=filesize,
  filetime=filetime,
  version=readstring(f,4),
  noftables=readushort(f),
  searchrange=readushort(f),
  entryselector=readushort(f),
  rangeshift=readushort(f),
  tables=tables,
  foundtables=false,
 }
 for i=1,fontdata.noftables do
  local tag=lower(stripstring(readstring(f,4)))
  local checksum=readushort(f)*0x10000+readushort(f)
  local offset=readulong(f)
  local length=readulong(f)
  if offset+length>filesize then
   report("bad %a table in file %a",tag,basename)
  end
  tables[tag]={
   checksum=checksum,
   offset=offset,
   length=length,
  }
 end
 fontdata.foundtables=sortedkeys(tables)
 if tables.cff or tables.cff2 then
  fontdata.format="opentype"
 else
  fontdata.format="truetype"
 end
 return fontdata,tables
end
local function prepareglyps(fontdata)
 local glyphs=setmetatableindex(function(t,k)
  local v={
   index=k,
  }
  t[k]=v
  return v
 end)
 fontdata.glyphs=glyphs
 fontdata.mapping={}
end
local function readtable(tag,f,fontdata,specification,...)
 local reader=readers[tag]
 if reader then
  reader(f,fontdata,specification,...)
 end
end
local variablefonts_supported=(context and true) or (logs and logs.application and true) or false
local function readdata(f,offset,specification)
 local fontdata,tables=loadtables(f,specification,offset)
 if specification.glyphs then
  prepareglyps(fontdata)
 end
 if not variablefonts_supported then
  specification.instance=nil
  specification.variable=nil
  specification.factors=nil
 end
 fontdata.temporary={}
 readtable("name",f,fontdata,specification)
 local askedname=specification.askedname
 if askedname then
  local fullname=getname(fontdata,"fullname") or ""
  local cleanname=gsub(askedname,"[^a-zA-Z0-9]","")
  local foundname=gsub(fullname,"[^a-zA-Z0-9]","")
  if lower(cleanname)~=lower(foundname) then
   return 
  end
 end
 readtable("stat",f,fontdata,specification)
 readtable("avar",f,fontdata,specification)
 readtable("fvar",f,fontdata,specification)
 if variablefonts_supported then
  local variabledata=fontdata.variabledata
  if variabledata then
   local instances=variabledata.instances
   local axis=variabledata.axis
   if axis and (not instances or #instances==0) then
    instances={}
    variabledata.instances=instances
    local function add(n,subfamily,value)
     local values={}
     for i=1,#axis do
      local a=axis[i]
      values[i]={
       axis=a.tag,
       value=i==n and value or a.default,
      }
     end
     instances[#instances+1]={
      subfamily=subfamily,
      values=values,
     }
    end
    for i=1,#axis do
     local a=axis[i]
     local tag=a.tag
     add(i,"default"..tag,a.default)
     add(i,"minimum"..tag,a.minimum)
     add(i,"maximum"..tag,a.maximum)
    end
   end
  end
  if not specification.factors then
   local instance=specification.instance
   if type(instance)=="string" then
    local factors=helpers.getfactors(fontdata,instance)
    if factors then
     specification.factors=factors
     fontdata.factors=factors
     fontdata.instance=instance
     report("user instance: %s, factors: % t",instance,factors)
    else
     report("user instance: %s, bad factors",instance)
    end
   end
  end
  if not fontdata.factors then
   if fontdata.variabledata then
    local factors=helpers.getfactors(fontdata,true)
    if factors then
     specification.factors=factors
     fontdata.factors=factors
    end
   else
   end
  end
 end
 readtable("os/2",f,fontdata,specification)
 readtable("head",f,fontdata,specification)
 readtable("maxp",f,fontdata,specification)
 readtable("hhea",f,fontdata,specification)
 readtable("vhea",f,fontdata,specification)
 readtable("hmtx",f,fontdata,specification)
 readtable("vmtx",f,fontdata,specification)
 readtable("vorg",f,fontdata,specification)
 readtable("post",f,fontdata,specification)
 readtable("mvar",f,fontdata,specification)
 readtable("hvar",f,fontdata,specification)
 readtable("vvar",f,fontdata,specification)
 readtable("gdef",f,fontdata,specification)
 readtable("cff",f,fontdata,specification)
 readtable("cff2",f,fontdata,specification)
 readtable("cmap",f,fontdata,specification)
 readtable("loca",f,fontdata,specification) 
 readtable("glyf",f,fontdata,specification) 
 readtable("colr",f,fontdata,specification)
 readtable("cpal",f,fontdata,specification)
 readtable("svg",f,fontdata,specification)
 readtable("sbix",f,fontdata,specification)
 readtable("cbdt",f,fontdata,specification)
 readtable("cblc",f,fontdata,specification)
 readtable("ebdt",f,fontdata,specification)
 readtable("eblc",f,fontdata,specification)
 readtable("kern",f,fontdata,specification)
 readtable("gsub",f,fontdata,specification)
 readtable("gpos",f,fontdata,specification)
 readtable("math",f,fontdata,specification)
 fontdata.locations=nil
 fontdata.cidmaps=nil
 fontdata.dictionaries=nil
 if specification.tableoffsets then
  fontdata.tableoffsets=tables
  setmetatableindex(tables,{
   version=fontdata.version,
   noftables=fontdata.noftables,
   searchrange=fontdata.searchrange,
   entryselector=fontdata.entryselector,
   rangeshift=fontdata.rangeshift,
  })
 end
 return fontdata
end
local function loadfontdata(specification)
 local filename=specification.filename
 local fileattr=lfs.attributes(filename)
 local filesize=fileattr and fileattr.size or 0
 local filetime=fileattr and fileattr.modification or 0
 local f=openfile(filename,true) 
 if not f then
  report("unable to open %a",filename)
 elseif filesize==0 then
  report("empty file %a",filename)
  closefile(f)
 else
  specification.filesize=filesize
  specification.filetime=filetime
  local version=readstring(f,4)
  local fontdata=nil
  if version=="OTTO" or version=="true" or version=="\0\1\0\0" then
   fontdata=readdata(f,0,specification)
  elseif version=="ttcf" then
   local subfont=tonumber(specification.subfont)
   local ttcversion=readulong(f)
   local nofsubfonts=readulong(f)
   local offsets=readcardinaltable(f,nofsubfonts,ulong)
   if subfont then 
    if subfont>=1 and subfont<=nofsubfonts then
     fontdata=readdata(f,offsets[subfont],specification)
    else
     report("no subfont %a in file %a",subfont,filename)
    end
   else
    subfont=specification.subfont
    if type(subfont)=="string" and subfont~="" then
     specification.askedname=subfont
     for i=1,nofsubfonts do
      fontdata=readdata(f,offsets[i],specification)
      if fontdata then
       fontdata.subfontindex=i
       report("subfont named %a has index %a",subfont,i)
       break
      end
     end
     if not fontdata then
      report("no subfont named %a",subfont)
     end
    else
     local subfonts={}
     fontdata={
      filename=filename,
      filesize=filesize,
      filetime=filetime,
      version=version,
      subfonts=subfonts,
      ttcversion=ttcversion,
      nofsubfonts=nofsubfonts,
     }
     for i=1,nofsubfonts do
      subfonts[i]=readdata(f,offsets[i],specification)
     end
    end
   end
  else
   report("unknown version %a in file %a",version,filename)
  end
  closefile(f)
  return fontdata or {}
 end
end
local function loadfont(specification,n,instance)
 if type(specification)=="string" then
  specification={
   filename=specification,
   info=true,
   details=true,
   glyphs=true,
   shapes=true,
   kerns=true,
   variable=true,
   globalkerns=true,
   lookups=true,
   subfont=n or true,
   tounicode=false,
   instance=instance
  }
 end
 if specification.shapes or specification.lookups or specification.kerns then
  specification.glyphs=true
 end
 if specification.glyphs then
  specification.details=true
 end
 if specification.details then
  specification.info=true 
 end
 if specification.platformnames then
  specification.platformnames=true 
 end
 if specification.instance or instance then
  specification.variable=true
  specification.instance=specification.instance or instance
 end
 local function message(str)
  report("fatal error in file %a: %s\n%s",specification.filename,str,debug and debug.traceback())
 end
 local ok,result=xpcall(loadfontdata,message,specification)
 if ok then
  return result
 end
end
function readers.loadshapes(filename,n,instance,streams)
 local fontdata=loadfont {
  filename=filename,
  shapes=true,
  streams=streams,
  variable=true,
  subfont=n,
  instance=instance,
 }
 if fontdata then
  for k,v in next,fontdata.glyphs do
   v.class=nil
   v.index=nil
   v.math=nil
  end
  local names=fontdata.names
  if names then
   for k,v in next,names do
    names[k]=fullstrip(v.content)
   end
  end
 end
 return fontdata and {
  filename=filename,
  format=fontdata.format,
  glyphs=fontdata.glyphs,
  units=fontdata.fontheader.units,
  cffinfo=fontdata.cffinfo,
  fontheader=fontdata.fontheader,
  horizontalheader=fontdata.horizontalheader,
  verticalheader=fontdata.verticalheader,
  maximumprofile=fontdata.maximumprofile,
  names=fontdata.names,
  postscript=fontdata.postscript,
 } or {
  filename=filename,
  format="unknown",
  glyphs={},
  units=0,
 }
end
function readers.loadfont(filename,n,instance)
 local fontdata=loadfont {
  filename=filename,
  glyphs=true,
  shapes=false,
  lookups=true,
  variable=true,
  subfont=n,
  instance=instance,
 }
 if fontdata then
  return {
   tableversion=tableversion,
   creator="context mkiv",
   size=fontdata.filesize,
   time=fontdata.filetime,
   glyphs=fontdata.glyphs,
   descriptions=fontdata.descriptions,
   format=fontdata.format,
   goodies={},
   metadata=getinfo(fontdata,n,false,false,true,true),
   properties={
    hasitalics=fontdata.hasitalics or false,
    maxcolorclass=fontdata.maxcolorclass,
    hascolor=fontdata.hascolor or false,
    instance=fontdata.instance,
    factors=fontdata.factors,
   },
   resources={
    filename=filename,
    private=privateoffset,
    duplicates=fontdata.duplicates  or {},
    features=fontdata.features or {},
    sublookups=fontdata.sublookups  or {},
    marks=fontdata.marks    or {},
    markclasses=fontdata.markclasses or {},
    marksets=fontdata.marksets or {},
    sequences=fontdata.sequences   or {},
    variants=fontdata.variants,
    version=getname(fontdata,"version"),
    cidinfo=fontdata.cidinfo,
    mathconstants=fontdata.mathconstants,
    colorpalettes=fontdata.colorpalettes,
    svgshapes=fontdata.svgshapes,
    pngshapes=fontdata.pngshapes,
    variabledata=fontdata.variabledata,
    foundtables=fontdata.foundtables,
   },
  }
 end
end
function readers.getinfo(filename,specification)
 local subfont=nil
 local platformnames=false
 local rawfamilynames=false
 local instancenames=true
 local tableoffsets=false
 if type(specification)=="table" then
  subfont=tonumber(specification.subfont)
  platformnames=specification.platformnames
  rawfamilynames=specification.rawfamilynames
  tableoffsets=specification.tableoffsets
 else
  subfont=tonumber(specification)
 end
 local fontdata=loadfont {
  filename=filename,
  details=true,
  platformnames=platformnames,
  instancenames=true,
  tableoffsets=tableoffsets,
 }
 if fontdata then
  local subfonts=fontdata.subfonts
  if not subfonts then
   return getinfo(fontdata,nil,platformnames,rawfamilynames,false,instancenames)
  elseif not subfont then
   local info={}
   for i=1,#subfonts do
    info[i]=getinfo(fontdata,i,platformnames,rawfamilynames,false,instancenames)
   end
   return info
  elseif subfont>=1 and subfont<=#subfonts then
   return getinfo(fontdata,subfont,platformnames,rawfamilynames,false,instancenames)
  else
   return {
    filename=filename,
    comment="there is no subfont "..subfont.." in this file"
   }
  end
 else
  return {
   filename=filename,
   comment="the file cannot be opened for reading",
  }
 end
end
function readers.rehash(fontdata,hashmethod)
 report("the %a helper is not yet implemented","rehash")
end
function readers.checkhash(fontdata)
 report("the %a helper is not yet implemented","checkhash")
end
function readers.pack(fontdata,hashmethod)
 report("the %a helper is not yet implemented","pack")
end
function readers.unpack(fontdata)
 report("the %a helper is not yet implemented","unpack")
end
function readers.expand(fontdata)
 report("the %a helper is not yet implemented","unpack")
end
function readers.compact(fontdata)
 report("the %a helper is not yet implemented","compact")
end
local extenders={}
function readers.registerextender(extender)
 extenders[#extenders+1]=extender
end
function readers.extend(fontdata)
 for i=1,#extenders do
  local extender=extenders[i]
  local name=extender.name or "unknown"
  local action=extender.action
  if action then
   action(fontdata)
  end
 end
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['font-oti']={
 version=1.001,
 comment="companion to font-ini.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
local lower=string.lower
local fonts=fonts
local constructors=fonts.constructors
local otf=constructors.handlers.otf
local otffeatures=constructors.features.otf
local registerotffeature=otffeatures.register
local otftables=otf.tables or {}
otf.tables=otftables
local allocate=utilities.storage.allocate
registerotffeature {
 name="features",
 description="initialization of feature handler",
 default=true,
}
local function setmode(tfmdata,value)
 if value then
  tfmdata.properties.mode=lower(value)
 end
end
otf.modeinitializer=setmode
local function setlanguage(tfmdata,value)
 if value then
  local cleanvalue=lower(value)
  local languages=otftables and otftables.languages
  local properties=tfmdata.properties
  if not languages then
   properties.language=cleanvalue
  elseif languages[value] then
   properties.language=cleanvalue
  else
   properties.language="dflt"
  end
 end
end
local function setscript(tfmdata,value)
 if value then
  local cleanvalue=lower(value)
  local scripts=otftables and otftables.scripts
  local properties=tfmdata.properties
  if not scripts then
   properties.script=cleanvalue
  elseif scripts[value] then
   properties.script=cleanvalue
  else
   properties.script="dflt"
  end
 end
end
registerotffeature {
 name="mode",
 description="mode",
 initializers={
  base=setmode,
  node=setmode,
  plug=setmode,
 }
}
registerotffeature {
 name="language",
 description="language",
 initializers={
  base=setlanguage,
  node=setlanguage,
  plug=setlanguage,
 }
}
registerotffeature {
 name="script",
 description="script",
 initializers={
  base=setscript,
  node=setscript,
  plug=setscript,
 }
}
otftables.featuretypes=allocate {
 gpos_single="position",
 gpos_pair="position",
 gpos_cursive="position",
 gpos_mark2base="position",
 gpos_mark2ligature="position",
 gpos_mark2mark="position",
 gpos_context="position",
 gpos_contextchain="position",
 gsub_single="substitution",
 gsub_multiple="substitution",
 gsub_alternate="substitution",
 gsub_ligature="substitution",
 gsub_context="substitution",
 gsub_contextchain="substitution",
 gsub_reversecontextchain="substitution",
 gsub_reversesub="substitution",
}
function otffeatures.checkeddefaultscript(featuretype,autoscript,scripts)
 if featuretype=="position" then
  local default=scripts.dflt
  if default then
   if autoscript=="position" or autoscript==true then
    return default
   else
    report_otf("script feature %s not applied, enable default positioning")
   end
  else
  end
 elseif featuretype=="substitution" then
  local default=scripts.dflt
  if default then
   if autoscript=="substitution" or autoscript==true then
    return default
   end
  end
 end
end
function otffeatures.checkeddefaultlanguage(featuretype,autolanguage,languages)
 if featuretype=="position" then
  local default=languages.dflt
  if default then
   if autolanguage=="position" or autolanguage==true then
    return default
   else
    report_otf("language feature %s not applied, enable default positioning")
   end
  else
  end
 elseif featuretype=="substitution" then
  local default=languages.dflt
  if default then
   if autolanguage=="substitution" or autolanguage==true then
    return default
   end
  end
 end
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ["font-ott"]={
 version=1.001,
 comment="companion to font-ini.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files",
}
local type,next,tonumber,tostring,rawget,rawset=type,next,tonumber,tostring,rawget,rawset
local gsub,lower,format,match,gmatch,find=string.gsub,string.lower,string.format,string.match,string.gmatch,string.find
local sequenced=table.sequenced
local is_boolean=string.is_boolean
local setmetatableindex=table.setmetatableindex
local setmetatablenewindex=table.setmetatablenewindex
local allocate=utilities.storage.allocate
local fonts=fonts
local otf=fonts.handlers.otf
local otffeatures=otf.features
local tables=otf.tables or {}
otf.tables=tables
local statistics=otf.statistics or {}
otf.statistics=statistics
local scripts=allocate {
 ["adlm"]="adlam",
 ["aghb"]="caucasian albanian",
 ["ahom"]="ahom",
 ["arab"]="arabic",
 ["armi"]="imperial aramaic",
 ["armn"]="armenian",
 ["avst"]="avestan",
 ["bali"]="balinese",
 ["bamu"]="bamum",
 ["bass"]="bassa vah",
 ["batk"]="batak",
 ["beng"]="bengali",
 ["bhks"]="bhaiksuki",
 ["bng2"]="bengali variant 2",
 ["bopo"]="bopomofo",
 ["brah"]="brahmi",
 ["brai"]="braille",
 ["bugi"]="buginese",
 ["buhd"]="buhid",
 ["byzm"]="byzantine music",
 ["cakm"]="chakma",
 ["cans"]="canadian syllabics",
 ["cari"]="carian",
 ["cham"]="cham",
 ["cher"]="cherokee",
 ["copt"]="coptic",
 ["cprt"]="cypriot syllabary",
 ["cyrl"]="cyrillic",
 ["dev2"]="devanagari variant 2",
 ["deva"]="devanagari",
 ["dogr"]="dogra",
 ["dsrt"]="deseret",
 ["dupl"]="duployan",
 ["egyp"]="egyptian heiroglyphs",
 ["elba"]="elbasan",
 ["ethi"]="ethiopic",
 ["geor"]="georgian",
 ["gjr2"]="gujarati variant 2",
 ["glag"]="glagolitic",
 ["gong"]="gunjala gondi",
 ["gonm"]="masaram gondi",
 ["goth"]="gothic",
 ["gran"]="grantha",
 ["grek"]="greek",
 ["gujr"]="gujarati",
 ["gur2"]="gurmukhi variant 2",
 ["guru"]="gurmukhi",
 ["hang"]="hangul",
 ["hani"]="cjk ideographic",
 ["hano"]="hanunoo",
 ["hatr"]="hatran",
 ["hebr"]="hebrew",
 ["hluw"]="anatolian hieroglyphs",
 ["hmng"]="pahawh hmong",
 ["hung"]="old hungarian",
 ["ital"]="old italic",
 ["jamo"]="hangul jamo",
 ["java"]="javanese",
 ["kali"]="kayah li",
 ["kana"]="hiragana and katakana",
 ["khar"]="kharosthi",
 ["khmr"]="khmer",
 ["khoj"]="khojki",
 ["knd2"]="kannada variant 2",
 ["knda"]="kannada",
 ["kthi"]="kaithi",
 ["lana"]="tai tham",
 ["lao" ]="lao",
 ["latn"]="latin",
 ["lepc"]="lepcha",
 ["limb"]="limbu",
 ["lina"]="linear a",
 ["linb"]="linear b",
 ["lisu"]="lisu",
 ["lyci"]="lycian",
 ["lydi"]="lydian",
 ["mahj"]="mahajani",
 ["maka"]="makasar",
 ["mand"]="mandaic and mandaean",
 ["mani"]="manichaean",
 ["marc"]="marchen",
 ["math"]="mathematical alphanumeric symbols",
 ["medf"]="medefaidrin",
 ["mend"]="mende kikakui",
 ["merc"]="meroitic cursive",
 ["mero"]="meroitic hieroglyphs",
 ["mlm2"]="malayalam variant 2",
 ["mlym"]="malayalam",
 ["modi"]="modi",
 ["mong"]="mongolian",
 ["mroo"]="mro",
 ["mtei"]="meitei Mayek",
 ["mult"]="multani",
 ["musc"]="musical symbols",
 ["mym2"]="myanmar variant 2",
 ["mymr"]="myanmar",
 ["narb"]="old north arabian",
 ["nbat"]="nabataean",
 ["newa"]="newa",
 ["nko" ]='n"ko',
 ["nshu"]="nüshu",
 ["ogam"]="ogham",
 ["olck"]="ol chiki",
 ["orkh"]="old turkic and orkhon runic",
 ["ory2"]="odia variant 2",
 ["orya"]="oriya",
 ["osge"]="osage",
 ["osma"]="osmanya",
 ["palm"]="palmyrene",
 ["pauc"]="pau cin hau",
 ["perm"]="old permic",
 ["phag"]="phags-pa",
 ["phli"]="inscriptional pahlavi",
 ["phlp"]="psalter pahlavi",
 ["phnx"]="phoenician",
 ["plrd"]="miao",
 ["prti"]="inscriptional parthian",
 ["rjng"]="rejang",
 ["rohg"]="hanifi rohingya",
 ["runr"]="runic",
 ["samr"]="samaritan",
 ["sarb"]="old south arabian",
 ["saur"]="saurashtra",
 ["sgnw"]="sign writing",
 ["shaw"]="shavian",
 ["shrd"]="sharada",
 ["sidd"]="siddham",
 ["sind"]="khudawadi",
 ["sinh"]="sinhala",
 ["sogd"]="sogdian",
 ["sogo"]="old sogdian",
 ["sora"]="sora sompeng",
 ["soyo"]="soyombo",
 ["sund"]="sundanese",
 ["sylo"]="syloti nagri",
 ["syrc"]="syriac",
 ["tagb"]="tagbanwa",
 ["takr"]="takri",
 ["tale"]="tai le",
 ["talu"]="tai lu",
 ["taml"]="tamil",
 ["tang"]="tangut",
 ["tavt"]="tai viet",
 ["tel2"]="telugu variant 2",
 ["telu"]="telugu",
 ["tfng"]="tifinagh",
 ["tglg"]="tagalog",
 ["thaa"]="thaana",
 ["thai"]="thai",
 ["tibt"]="tibetan",
 ["tirh"]="tirhuta",
 ["tml2"]="tamil variant 2",
 ["ugar"]="ugaritic cuneiform",
 ["vai" ]="vai",
 ["wara"]="warang citi",
 ["xpeo"]="old persian cuneiform",
 ["xsux"]="sumero-akkadian cuneiform",
 ["yi"  ]="yi",
 ["zanb"]="zanabazar square",
}
local languages=allocate {
 ["aba" ]="abaza",
 ["abk" ]="abkhazian",
 ["ach" ]="acholi",
 ["acr" ]="achi",
 ["ady" ]="adyghe",
 ["afk" ]="afrikaans",
 ["afr" ]="afar",
 ["agw" ]="agaw",
 ["aio" ]="aiton",
 ["aka" ]="akan",
 ["als" ]="alsatian",
 ["alt" ]="altai",
 ["amh" ]="amharic",
 ["ang" ]="anglo-saxon",
 ["apph"]="phonetic transcription—americanist conventions",
 ["ara" ]="arabic",
 ["arg" ]="aragonese",
 ["ari" ]="aari",
 ["ark" ]="rakhine",
 ["asm" ]="assamese",
 ["ast" ]="asturian",
 ["ath" ]="athapaskan",
 ["avr" ]="avar",
 ["awa" ]="awadhi",
 ["aym" ]="aymara",
 ["azb" ]="torki",
 ["aze" ]="azerbaijani",
 ["bad" ]="badaga",
 ["bad0"]="banda",
 ["bag" ]="baghelkhandi",
 ["bal" ]="balkar",
 ["ban" ]="balinese",
 ["bar" ]="bavarian",
 ["bau" ]="baulé",
 ["bbc" ]="batak toba",
 ["bbr" ]="berber",
 ["bch" ]="bench",
 ["bcr" ]="bible cree",
 ["bdy" ]="bandjalang",
 ["bel" ]="belarussian",
 ["bem" ]="bemba",
 ["ben" ]="bengali",
 ["bgc" ]="haryanvi",
 ["bgq" ]="bagri",
 ["bgr" ]="bulgarian",
 ["bhi" ]="bhili",
 ["bho" ]="bhojpuri",
 ["bik" ]="bikol",
 ["bil" ]="bilen",
 ["bis" ]="bislama",
 ["bjj" ]="kanauji",
 ["bkf" ]="blackfoot",
 ["bli" ]="baluchi",
 ["blk" ]="pa'o karen",
 ["bln" ]="balante",
 ["blt" ]="balti",
 ["bmb" ]="bambara (bamanankan)",
 ["bml" ]="bamileke",
 ["bos" ]="bosnian",
 ["bpy" ]="bishnupriya manipuri",
 ["bre" ]="breton",
 ["brh" ]="brahui",
 ["bri" ]="braj bhasha",
 ["brm" ]="burmese",
 ["brx" ]="bodo",
 ["bsh" ]="bashkir",
 ["bsk" ]="burushaski",
 ["bti" ]="beti",
 ["bts" ]="batak simalungun",
 ["bug" ]="bugis",
 ["byv" ]="medumba",
 ["cak" ]="kaqchikel",
 ["cat" ]="catalan",
 ["cbk" ]="zamboanga chavacano",
 ["cchn"]="chinantec",
 ["ceb" ]="cebuano",
 ["cgg" ]="chiga",
 ["cha" ]="chamorro",
 ["che" ]="chechen",
 ["chg" ]="chaha gurage",
 ["chh" ]="chattisgarhi",
 ["chi" ]="chichewa (chewa, nyanja)",
 ["chk" ]="chukchi",
 ["chk0"]="chuukese",
 ["cho" ]="choctaw",
 ["chp" ]="chipewyan",
 ["chr" ]="cherokee",
 ["chu" ]="chuvash",
 ["chy" ]="cheyenne",
 ["cja" ]="western cham",
 ["cjm" ]="eastern cham",
 ["cmr" ]="comorian",
 ["cop" ]="coptic",
 ["cor" ]="cornish",
 ["cos" ]="corsican",
 ["cpp" ]="creoles",
 ["cre" ]="cree",
 ["crr" ]="carrier",
 ["crt" ]="crimean tatar",
 ["csb" ]="kashubian",
 ["csl" ]="church slavonic",
 ["csy" ]="czech",
 ["ctg" ]="chittagonian",
 ["cuk" ]="san blas kuna",
 ["dan" ]="danish",
 ["dar" ]="dargwa",
 ["dax" ]="dayi",
 ["dcr" ]="woods cree",
 ["deu" ]="german",
 ["dgo" ]="dogri",
 ["dgr" ]="dogri",
 ["dhg" ]="dhangu",
 ["dhv" ]="divehi (dhivehi, maldivian)",
 ["diq" ]="dimli",
 ["div" ]="divehi (dhivehi, maldivian)",
 ["djr" ]="zarma",
 ["djr0"]="djambarrpuyngu",
 ["dng" ]="dangme",
 ["dnj" ]="dan",
 ["dnk" ]="dinka",
 ["dri" ]="dari",
 ["duj" ]="dhuwal",
 ["dun" ]="dungan",
 ["dzn" ]="dzongkha",
 ["ebi" ]="ebira",
 ["ecr" ]="eastern cree",
 ["edo" ]="edo",
 ["efi" ]="efik",
 ["ell" ]="greek",
 ["emk" ]="eastern maninkakan",
 ["eng" ]="english",
 ["erz" ]="erzya",
 ["esp" ]="spanish",
 ["esu" ]="central yupik",
 ["eti" ]="estonian",
 ["euq" ]="basque",
 ["evk" ]="evenki",
 ["evn" ]="even",
 ["ewe" ]="ewe",
 ["fan" ]="french antillean",
 ["fan0"]=" fang",
 ["far" ]="persian",
 ["fat" ]="fanti",
 ["fin" ]="finnish",
 ["fji" ]="fijian",
 ["fle" ]="dutch (flemish)",
 ["fmp" ]="fe’fe’",
 ["fne" ]="forest nenets",
 ["fon" ]="fon",
 ["fos" ]="faroese",
 ["fra" ]="french",
 ["frc" ]="cajun french",
 ["fri" ]="frisian",
 ["frl" ]="friulian",
 ["frp" ]="arpitan",
 ["fta" ]="futa",
 ["ful" ]="fulah",
 ["fuv" ]="nigerian fulfulde",
 ["gad" ]="ga",
 ["gae" ]="scottish gaelic (gaelic)",
 ["gag" ]="gagauz",
 ["gal" ]="galician",
 ["gar" ]="garshuni",
 ["gaw" ]="garhwali",
 ["gez" ]="ge'ez",
 ["gih" ]="githabul",
 ["gil" ]="gilyak",
 ["gil0"]="kiribati (gilbertese)",
 ["gkp" ]="kpelle (guinea)",
 ["glk" ]="gilaki",
 ["gmz" ]="gumuz",
 ["gnn" ]="gumatj",
 ["gog" ]="gogo",
 ["gon" ]="gondi",
 ["grn" ]="greenlandic",
 ["gro" ]="garo",
 ["gua" ]="guarani",
 ["guc" ]="wayuu",
 ["guf" ]="gupapuyngu",
 ["guj" ]="gujarati",
 ["guz" ]="gusii",
 ["hai" ]="haitian (haitian creole)",
 ["hal" ]="halam",
 ["har" ]="harauti",
 ["hau" ]="hausa",
 ["haw" ]="hawaiian",
 ["hay" ]="haya",
 ["haz" ]="hazaragi",
 ["hbn" ]="hammer-banna",
 ["her" ]="herero",
 ["hil" ]="hiligaynon",
 ["hin" ]="hindi",
 ["hma" ]="high mari",
 ["hmn" ]="hmong",
 ["hmo" ]="hiri motu",
 ["hnd" ]="hindko",
 ["ho"  ]="ho",
 ["hri" ]="harari",
 ["hrv" ]="croatian",
 ["hun" ]="hungarian",
 ["hye" ]="armenian",
 ["hye0"]="armenian east",
 ["iba" ]="iban",
 ["ibb" ]="ibibio",
 ["ibo" ]="igbo",
 ["ido" ]="ido",
 ["ijo" ]="ijo languages",
 ["ile" ]="interlingue",
 ["ilo" ]="ilokano",
 ["ina" ]="interlingua",
 ["ind" ]="indonesian",
 ["ing" ]="ingush",
 ["inu" ]="inuktitut",
 ["ipk" ]="inupiat",
 ["ipph"]="phonetic transcription—ipa conventions",
 ["iri" ]="irish",
 ["irt" ]="irish traditional",
 ["isl" ]="icelandic",
 ["ism" ]="inari sami",
 ["ita" ]="italian",
 ["iwr" ]="hebrew",
 ["jam" ]="jamaican creole",
 ["jan" ]="japanese",
 ["jav" ]="javanese",
 ["jbo" ]="lojban",
 ["jct" ]="krymchak",
 ["jii" ]="yiddish",
 ["jud" ]="ladino",
 ["jul" ]="jula",
 ["kab" ]="kabardian",
 ["kab0"]="kabyle",
 ["kac" ]="kachchi",
 ["kal" ]="kalenjin",
 ["kan" ]="kannada",
 ["kar" ]="karachay",
 ["kat" ]="georgian",
 ["kaz" ]="kazakh",
 ["kde" ]="makonde",
 ["kea" ]="kabuverdianu (crioulo)",
 ["keb" ]="kebena",
 ["kek" ]="kekchi",
 ["kge" ]="khutsuri georgian",
 ["kha" ]="khakass",
 ["khk" ]="khanty-kazim",
 ["khm" ]="khmer",
 ["khs" ]="khanty-shurishkar",
 ["kht" ]="khamti shan",
 ["khv" ]="khanty-vakhi",
 ["khw" ]="khowar",
 ["kik" ]="kikuyu (gikuyu)",
 ["kir" ]="kirghiz (kyrgyz)",
 ["kis" ]="kisii",
 ["kiu" ]="kirmanjki",
 ["kjd" ]="southern kiwai",
 ["kjp" ]="eastern pwo karen",
 ["kjz" ]="bumthangkha",
 ["kkn" ]="kokni",
 ["klm" ]="kalmyk",
 ["kmb" ]="kamba",
 ["kmn" ]="kumaoni",
 ["kmo" ]="komo",
 ["kms" ]="komso",
 ["kmz" ]="khorasani turkic",
 ["knr" ]="kanuri",
 ["kod" ]="kodagu",
 ["koh" ]="korean old hangul",
 ["kok" ]="konkani",
 ["kom" ]="komi",
 ["kon" ]="kikongo",
 ["kon0"]="kongo",
 ["kop" ]="komi-permyak",
 ["kor" ]="korean",
 ["kos" ]="kosraean",
 ["koz" ]="komi-zyrian",
 ["kpl" ]="kpelle",
 ["kri" ]="krio",
 ["krk" ]="karakalpak",
 ["krl" ]="karelian",
 ["krm" ]="karaim",
 ["krn" ]="karen",
 ["krt" ]="koorete",
 ["ksh" ]="kashmiri",
 ["ksh0"]="ripuarian",
 ["ksi" ]="khasi",
 ["ksm" ]="kildin sami",
 ["ksw" ]="s’gaw karen",
 ["kua" ]="kuanyama",
 ["kui" ]="kui",
 ["kul" ]="kulvi",
 ["kum" ]="kumyk",
 ["kur" ]="kurdish",
 ["kuu" ]="kurukh",
 ["kuy" ]="kuy",
 ["kyk" ]="koryak",
 ["kyu" ]="western kayah",
 ["lad" ]="ladin",
 ["lah" ]="lahuli",
 ["lak" ]="lak",
 ["lam" ]="lambani",
 ["lao" ]="lao",
 ["lat" ]="latin",
 ["laz" ]="laz",
 ["lcr" ]="l-cree",
 ["ldk" ]="ladakhi",
 ["lez" ]="lezgi",
 ["lij" ]="ligurian",
 ["lim" ]="limburgish",
 ["lin" ]="lingala",
 ["lis" ]="lisu",
 ["ljp" ]="lampung",
 ["lki" ]="laki",
 ["lma" ]="low mari",
 ["lmb" ]="limbu",
 ["lmo" ]="lombard",
 ["lmw" ]="lomwe",
 ["lom" ]="loma",
 ["lrc" ]="luri",
 ["lsb" ]="lower sorbian",
 ["lsm" ]="lule sami",
 ["lth" ]="lithuanian",
 ["ltz" ]="luxembourgish",
 ["lua" ]="luba-lulua",
 ["lub" ]="luba-katanga",
 ["lug" ]="ganda",
 ["luh" ]="luyia",
 ["luo" ]="luo",
 ["lvi" ]="latvian",
 ["mad" ]="madura",
 ["mag" ]="magahi",
 ["mah" ]="marshallese",
 ["maj" ]="majang",
 ["mak" ]="makhuwa",
 ["mal" ]="malayalam reformed",
 ["mam" ]="mam",
 ["man" ]="mansi",
 ["map" ]="mapudungun",
 ["mar" ]="marathi",
 ["maw" ]="marwari",
 ["mbn" ]="mbundu",
 ["mbo" ]="mbo",
 ["mch" ]="manchu",
 ["mcr" ]="moose cree",
 ["mde" ]="mende",
 ["mdr" ]="mandar",
 ["men" ]="me'en",
 ["mer" ]="meru",
 ["mfa" ]="pattani malay",
 ["mfe" ]="morisyen",
 ["min" ]="minangkabau",
 ["miz" ]="mizo",
 ["mkd" ]="macedonian",
 ["mkr" ]="makasar",
 ["mkw" ]="kituba",
 ["mle" ]="male",
 ["mlg" ]="malagasy",
 ["mln" ]="malinke",
 ["mlr" ]="malayalam reformed",
 ["mly" ]="malay",
 ["mnd" ]="mandinka",
 ["mng" ]="mongolian",
 ["mni" ]="manipuri",
 ["mnk" ]="maninka",
 ["mnx" ]="manx",
 ["moh" ]="mohawk",
 ["mok" ]="moksha",
 ["mol" ]="moldavian",
 ["mon" ]="mon",
 ["mor" ]="moroccan",
 ["mos" ]="mossi",
 ["mri" ]="maori",
 ["mth" ]="maithili",
 ["mts" ]="maltese",
 ["mun" ]="mundari",
 ["mus" ]="muscogee",
 ["mwl" ]="mirandese",
 ["mww" ]="hmong daw",
 ["myn" ]="mayan",
 ["mzn" ]="mazanderani",
 ["nag" ]="naga-assamese",
 ["nah" ]="nahuatl",
 ["nan" ]="nanai",
 ["nap" ]="neapolitan",
 ["nas" ]="naskapi",
 ["nau" ]="nauruan",
 ["nav" ]="navajo",
 ["ncr" ]="n-cree",
 ["ndb" ]="ndebele",
 ["ndc" ]="ndau",
 ["ndg" ]="ndonga",
 ["nds" ]="low saxon",
 ["nep" ]="nepali",
 ["new" ]="newari",
 ["nga" ]="ngbaka",
 ["ngr" ]="nagari",
 ["nhc" ]="norway house cree",
 ["nis" ]="nisi",
 ["niu" ]="niuean",
 ["nkl" ]="nyankole",
 ["nko" ]="n'ko",
 ["nld" ]="dutch",
 ["noe" ]="nimadi",
 ["nog" ]="nogai",
 ["nor" ]="norwegian",
 ["nov" ]="novial",
 ["nsm" ]="northern sami",
 ["nso" ]="sotho, northern",
 ["nta" ]="northern tai",
 ["nto" ]="esperanto",
 ["nym" ]="nyamwezi",
 ["nyn" ]="norwegian nynorsk",
 ["nza" ]="mbembe tigon",
 ["oci" ]="occitan",
 ["ocr" ]="oji-cree",
 ["ojb" ]="ojibway",
 ["ori" ]="odia",
 ["oro" ]="oromo",
 ["oss" ]="ossetian",
 ["paa" ]="palestinian aramaic",
 ["pag" ]="pangasinan",
 ["pal" ]="pali",
 ["pam" ]="pampangan",
 ["pan" ]="punjabi",
 ["pap" ]="palpa",
 ["pap0"]="papiamentu",
 ["pas" ]="pashto",
 ["pau" ]="palauan",
 ["pcc" ]="bouyei",
 ["pcd" ]="picard",
 ["pdc" ]="pennsylvania german",
 ["pgr" ]="polytonic greek",
 ["phk" ]="phake",
 ["pih" ]="norfolk",
 ["pil" ]="filipino",
 ["plg" ]="palaung",
 ["plk" ]="polish",
 ["pms" ]="piemontese",
 ["pnb" ]="western panjabi",
 ["poh" ]="pocomchi",
 ["pon" ]="pohnpeian",
 ["pro" ]="provencal",
 ["ptg" ]="portuguese",
 ["pwo" ]="western pwo karen",
 ["qin" ]="chin",
 ["quc" ]="k’iche’",
 ["quh" ]="quechua (bolivia)",
 ["quz" ]="quechua",
 ["qvi" ]="quechua (ecuador)",
 ["qwh" ]="quechua (peru)",
 ["raj" ]="rajasthani",
 ["rar" ]="rarotongan",
 ["rbu" ]="russian buriat",
 ["rcr" ]="r-cree",
 ["rej" ]="rejang",
 ["ria" ]="riang",
 ["rif" ]="tarifit",
 ["rit" ]="ritarungo",
 ["rkw" ]="arakwal",
 ["rms" ]="romansh",
 ["rmy" ]="vlax romani",
 ["rom" ]="romanian",
 ["roy" ]="romany",
 ["rsy" ]="rusyn",
 ["rtm" ]="rotuman",
 ["rua" ]="kinyarwanda",
 ["run" ]="rundi",
 ["rup" ]="aromanian",
 ["rus" ]="russian",
 ["sad" ]="sadri",
 ["san" ]="sanskrit",
 ["sas" ]="sasak",
 ["sat" ]="santali",
 ["say" ]="sayisi",
 ["scn" ]="sicilian",
 ["sco" ]="scots",
 ["scs" ]="north slavey",
 ["sek" ]="sekota",
 ["sel" ]="selkup",
 ["sga" ]="old irish",
 ["sgo" ]="sango",
 ["sgs" ]="samogitian",
 ["shi" ]="tachelhit",
 ["shn" ]="shan",
 ["sib" ]="sibe",
 ["sid" ]="sidamo",
 ["sig" ]="silte gurage",
 ["sks" ]="skolt sami",
 ["sky" ]="slovak",
 ["sla" ]="slavey",
 ["slv" ]="slovenian",
 ["sml" ]="somali",
 ["smo" ]="samoan",
 ["sna" ]="sena",
 ["sna0"]="shona",
 ["snd" ]="sindhi",
 ["snh" ]="sinhala (sinhalese)",
 ["snk" ]="soninke",
 ["sog" ]="sodo gurage",
 ["sop" ]="songe",
 ["sot" ]="sotho, southern",
 ["sqi" ]="albanian",
 ["srb" ]="serbian",
 ["srd" ]="sardinian",
 ["srk" ]="saraiki",
 ["srr" ]="serer",
 ["ssl" ]="south slavey",
 ["ssm" ]="southern sami",
 ["stq" ]="saterland frisian",
 ["suk" ]="sukuma",
 ["sun" ]="sundanese",
 ["sur" ]="suri",
 ["sva" ]="svan",
 ["sve" ]="swedish",
 ["swa" ]="swadaya aramaic",
 ["swk" ]="swahili",
 ["swz" ]="swati",
 ["sxt" ]="sutu",
 ["sxu" ]="upper saxon",
 ["syl" ]="sylheti",
 ["syr" ]="syriac",
 ["syre"]="estrangela syriac",
 ["syrj"]="western syriac",
 ["syrn"]="eastern syriac",
 ["szl" ]="silesian",
 ["tab" ]="tabasaran",
 ["taj" ]="tajiki",
 ["tam" ]="tamil",
 ["tat" ]="tatar",
 ["tcr" ]="th-cree",
 ["tdd" ]="dehong dai",
 ["tel" ]="telugu",
 ["tet" ]="tetum",
 ["tgl" ]="tagalog",
 ["tgn" ]="tongan",
 ["tgr" ]="tigre",
 ["tgy" ]="tigrinya",
 ["tha" ]="thai",
 ["tht" ]="tahitian",
 ["tib" ]="tibetan",
 ["tiv" ]="tiv",
 ["tkm" ]="turkmen",
 ["tmh" ]="tamashek",
 ["tmn" ]="temne",
 ["tna" ]="tswana",
 ["tne" ]="tundra nenets",
 ["tng" ]="tonga",
 ["tod" ]="todo",
 ["tod0"]="toma",
 ["tpi" ]="tok pisin",
 ["trk" ]="turkish",
 ["tsg" ]="tsonga",
 ["tsj" ]="tshangla",
 ["tua" ]="turoyo aramaic",
 ["tul" ]="tulu",
 ["tum" ]="tulu",
 ["tuv" ]="tuvin",
 ["tvl" ]="tuvalu",
 ["twi" ]="twi",
 ["tyz" ]="tày",
 ["tzm" ]="tamazight",
 ["tzo" ]="tzotzil",
 ["udm" ]="udmurt",
 ["ukr" ]="ukrainian",
 ["umb" ]="umbundu",
 ["urd" ]="urdu",
 ["usb" ]="upper sorbian",
 ["uyg" ]="uyghur",
 ["uzb" ]="uzbek",
 ["vec" ]="venetian",
 ["ven" ]="venda",
 ["vit" ]="vietnamese",
 ["vol" ]="volapük",
 ["vro" ]="võro",
 ["wa"  ]="wa",
 ["wag" ]="wagdi",
 ["war" ]="waray-waray",
 ["wcr" ]="west-cree",
 ["wel" ]="welsh",
 ["wlf" ]="wolof",
 ["wln" ]="walloon",
 ["wtm" ]="mewati",
 ["xbd" ]="lü",
 ["xhs" ]="xhosa",
 ["xjb" ]="minjangbal",
 ["xkf" ]="khengkha",
 ["xog" ]="soga",
 ["xpe" ]="kpelle (liberia)",
 ["yak" ]="sakha",
 ["yao" ]="yao",
 ["yap" ]="yapese",
 ["yba" ]="yoruba",
 ["ycr" ]="y-cree",
 ["yic" ]="yi classic",
 ["yim" ]="yi modern",
 ["zea" ]="zealandic",
 ["zgh" ]="standard morrocan tamazigh",
 ["zha" ]="zhuang",
 ["zhh" ]="chinese, hong kong sar",
 ["zhp" ]="chinese phonetic",
 ["zhs" ]="chinese simplified",
 ["zht" ]="chinese traditional",
 ["znd" ]="zande",
 ["zul" ]="zulu",
 ["zza" ]="zazaki",
}
local features=allocate {
 ["aalt"]="access all alternates",
 ["abvf"]="above-base forms",
 ["abvm"]="above-base mark positioning",
 ["abvs"]="above-base substitutions",
 ["afrc"]="alternative fractions",
 ["akhn"]="akhands",
 ["blwf"]="below-base forms",
 ["blwm"]="below-base mark positioning",
 ["blws"]="below-base substitutions",
 ["c2pc"]="petite capitals from capitals",
 ["c2sc"]="small capitals from capitals",
 ["calt"]="contextual alternates",
 ["case"]="case-sensitive forms",
 ["ccmp"]="glyph composition/decomposition",
 ["cfar"]="conjunct form after ro",
 ["cjct"]="conjunct forms",
 ["clig"]="contextual ligatures",
 ["cpct"]="centered cjk punctuation",
 ["cpsp"]="capital spacing",
 ["cswh"]="contextual swash",
 ["curs"]="cursive positioning",
 ["dflt"]="default processing",
 ["dist"]="distances",
 ["dlig"]="discretionary ligatures",
 ["dnom"]="denominators",
 ["dtls"]="dotless forms",
 ["expt"]="expert forms",
 ["falt"]="final glyph alternates",
 ["fin2"]="terminal forms #2",
 ["fin3"]="terminal forms #3",
 ["fina"]="terminal forms",
 ["flac"]="flattened accents over capitals",
 ["frac"]="fractions",
 ["fwid"]="full width",
 ["half"]="half forms",
 ["haln"]="halant forms",
 ["halt"]="alternate half width",
 ["hist"]="historical forms",
 ["hkna"]="horizontal kana alternates",
 ["hlig"]="historical ligatures",
 ["hngl"]="hangul",
 ["hojo"]="hojo kanji forms",
 ["hwid"]="half width",
 ["init"]="initial forms",
 ["isol"]="isolated forms",
 ["ital"]="italics",
 ["jalt"]="justification alternatives",
 ["jp04"]="jis2004 forms",
 ["jp78"]="jis78 forms",
 ["jp83"]="jis83 forms",
 ["jp90"]="jis90 forms",
 ["kern"]="kerning",
 ["lfbd"]="left bounds",
 ["liga"]="standard ligatures",
 ["ljmo"]="leading jamo forms",
 ["lnum"]="lining figures",
 ["locl"]="localized forms",
 ["ltra"]="left-to-right alternates",
 ["ltrm"]="left-to-right mirrored forms",
 ["mark"]="mark positioning",
 ["med2"]="medial forms #2",
 ["medi"]="medial forms",
 ["mgrk"]="mathematical greek",
 ["mkmk"]="mark to mark positioning",
 ["mset"]="mark positioning via substitution",
 ["nalt"]="alternate annotation forms",
 ["nlck"]="nlc kanji forms",
 ["nukt"]="nukta forms",
 ["numr"]="numerators",
 ["onum"]="old style figures",
 ["opbd"]="optical bounds",
 ["ordn"]="ordinals",
 ["ornm"]="ornaments",
 ["palt"]="proportional alternate width",
 ["pcap"]="petite capitals",
 ["pkna"]="proportional kana",
 ["pnum"]="proportional figures",
 ["pref"]="pre-base forms",
 ["pres"]="pre-base substitutions",
 ["pstf"]="post-base forms",
 ["psts"]="post-base substitutions",
 ["pwid"]="proportional widths",
 ["qwid"]="quarter widths",
 ["rand"]="randomize",
 ["rclt"]="required contextual alternates",
 ["rkrf"]="rakar forms",
 ["rlig"]="required ligatures",
 ["rphf"]="reph form",
 ["rtbd"]="right bounds",
 ["rtla"]="right-to-left alternates",
 ["rtlm"]="right to left mirrored forms",
 ["rvrn"]="required variation alternates",
 ["ruby"]="ruby notation forms",
 ["salt"]="stylistic alternates",
 ["sinf"]="scientific inferiors",
 ["size"]="optical size",
 ["smcp"]="small capitals",
 ["smpl"]="simplified forms",
 ["ssty"]="script style",
 ["stch"]="stretching glyph decomposition",
 ["subs"]="subscript",
 ["sups"]="superscript",
 ["swsh"]="swash",
 ["titl"]="titling",
 ["tjmo"]="trailing jamo forms",
 ["tnam"]="traditional name forms",
 ["tnum"]="tabular figures",
 ["trad"]="traditional forms",
 ["twid"]="third widths",
 ["unic"]="unicase",
 ["valt"]="alternate vertical metrics",
 ["vatu"]="vattu variants",
 ["vert"]="vertical writing",
 ["vhal"]="alternate vertical half metrics",
 ["vjmo"]="vowel jamo forms",
 ["vkna"]="vertical kana alternates",
 ["vkrn"]="vertical kerning",
 ["vpal"]="proportional alternate vertical metrics",
 ["vrtr"]="vertical alternates for rotation",
 ["vrt2"]="vertical rotation",
 ["zero"]="slashed zero",
 ["trep"]="traditional tex replacements",
 ["tlig"]="traditional tex ligatures",
 ["ss.."]="stylistic set ..",
 ["cv.."]="character variant ..",
 ["js.."]="justification ..",
 ["dv.."]="devanagari ..",
 ["ml.."]="malayalam ..",
}
local baselines=allocate {
 ["hang"]="hanging baseline",
 ["icfb"]="ideographic character face bottom edge baseline",
 ["icft"]="ideographic character face tope edige baseline",
 ["ideo"]="ideographic em-box bottom edge baseline",
 ["idtp"]="ideographic em-box top edge baseline",
 ["math"]="mathematical centered baseline",
 ["romn"]="roman baseline"
}
tables.scripts=scripts
tables.languages=languages
tables.features=features
tables.baselines=baselines
local acceptscripts=true  directives.register("otf.acceptscripts",function(v) acceptscripts=v end)
local acceptlanguages=true  directives.register("otf.acceptlanguages",function(v) acceptlanguages=v end)
local report_checks=logs.reporter("fonts","checks")
if otffeatures.features then
 for k,v in next,otffeatures.features do
  features[k]=v
 end
 otffeatures.features=features
end
local function swapped(h)
 local r={}
 for k,v in next,h do
  r[gsub(v,"[^a-z0-9]","")]=k 
 end
 return r
end
local verbosescripts=allocate(swapped(scripts  ))
local verboselanguages=allocate(swapped(languages))
local verbosefeatures=allocate(swapped(features ))
local verbosebaselines=allocate(swapped(baselines))
local function resolve(t,k)
 if k then
  k=gsub(lower(k),"[^a-z0-9]","")
  local v=rawget(t,k)
  if v then
   return v
  end
 end
end
setmetatableindex(verbosescripts,resolve)
setmetatableindex(verboselanguages,resolve)
setmetatableindex(verbosefeatures,resolve)
setmetatableindex(verbosebaselines,resolve)
setmetatableindex(scripts,function(t,k)
 if k then
  k=lower(k)
  if k=="dflt" then
   return k
  end
  local v=rawget(t,k)
  if v then
   return v
  end
  k=gsub(k," ","")
  v=rawget(t,v)
  if v then
   return v
  elseif acceptscripts then
   report_checks("registering extra script %a",k)
   rawset(t,k,k)
   return k
  end
 end
 return "dflt"
end)
setmetatableindex(languages,function(t,k)
 if k then
  k=lower(k)
  if k=="dflt" then
   return k
  end
  local v=rawget(t,k)
  if v then
   return v
  end
  k=gsub(k," ","")
  v=rawget(t,v)
  if v then
   return v
  elseif acceptlanguages then
   report_checks("registering extra language %a",k)
   rawset(t,k,k)
   return k
  end
 end
 return "dflt"
end)
if setmetatablenewindex then
 setmetatablenewindex(languages,"ignore")
 setmetatablenewindex(scripts,"ignore")
 setmetatablenewindex(baselines,"ignore")
end
local function resolve(t,k)
 if k then
  k=lower(k)
  local v=rawget(t,k)
  if v then
   return v
  end
  k=gsub(k," ","")
  local v=rawget(t,k)
  if v then
   return v
  end
  local tag,dd=match(k,"(..)(%d+)")
  if tag and dd then
   local v=rawget(t,tag)
   if v then
    return v 
   else
    local v=rawget(t,tag.."..") 
    if v then
     return (gsub(v,"%.%.",tonumber(dd))) 
    end
   end
  end
 end
 return k 
end
setmetatableindex(features,resolve)
local function assign(t,k,v)
 if k and v then
  v=lower(v)
  rawset(t,k,v)
 end
end
if setmetatablenewindex then
 setmetatablenewindex(features,assign)
end
local checkers={
 rand=function(v)
  return v==true and "random" or v
 end
}
if not storage then
 return
end
local usedfeatures=statistics.usedfeatures or {}
statistics.usedfeatures=usedfeatures
table.setmetatableindex(usedfeatures,function(t,k) if k then local v={} t[k]=v return v end end) 
storage.register("fonts/otf/usedfeatures",usedfeatures,"fonts.handlers.otf.statistics.usedfeatures" )
local normalizedaxis=otf.readers.helpers.normalizedaxis or function(s) return s end
function otffeatures.normalize(features,wrap) 
 if features then
  local h={}
  for key,value in next,features do
   local k=lower(key)
   if k=="language" then
    local v=gsub(lower(value),"[^a-z0-9]","")
    h.language=rawget(verboselanguages,v) or (languages[v] and v) or "dflt" 
   elseif k=="script" then
    local v=gsub(lower(value),"[^a-z0-9]","")
    h.script=rawget(verbosescripts,v) or (scripts[v] and v) or "dflt" 
   elseif k=="axis" then
    h[k]=normalizedaxis(value)
    if not callbacks.supported.glyph_stream_provider then
     h.variableshapes=true 
    end
   else
    local uk=usedfeatures[key]
    local uv=uk[value]
    if uv then
    else
     uv=tonumber(value) 
     if uv then
     elseif type(value)=="string" then
      local b=is_boolean(value)
      if type(b)=="nil" then
       if wrap and find(value,",") then
        uv="{"..lower(value).."}"
       else
        uv=lower(value)
       end
      else
       uv=b
      end
     elseif type(value)=="table" then
      uv=sequenced(t,",")
     else
      uv=value
     end
     if not rawget(features,k) then
      k=rawget(verbosefeatures,k) or k
     end
     local c=checkers[k]
     if c then
      uv=c(uv) or vc
     end
     uk[value]=uv
    end
    h[k]=uv
   end
  end
  return h
 end
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['font-cff']={
 version=1.001,
 comment="companion to font-ini.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
local next,type,tonumber,rawget=next,type,tonumber,rawget
local byte,char,gmatch,sub=string.byte,string.char,string.gmatch,string.sub
local concat,remove,unpack=table.concat,table.remove,table.unpack
local floor,abs,round,ceil,min,max=math.floor,math.abs,math.round,math.ceil,math.min,math.max
local P,C,R,S,C,Cs,Ct=lpeg.P,lpeg.C,lpeg.R,lpeg.S,lpeg.C,lpeg.Cs,lpeg.Ct
local lpegmatch=lpeg.match
local formatters=string.formatters
local bytetable=string.bytetable
local idiv=number.idiv
local rshift,band,extract=bit32.rshift,bit32.band,bit32.extract
local readers=fonts.handlers.otf.readers
local streamreader=readers.streamreader
local readstring=streamreader.readstring
local readbyte=streamreader.readcardinal1  
local readushort=streamreader.readcardinal2  
local readuint=streamreader.readcardinal3  
local readulong=streamreader.readcardinal4  
local setposition=streamreader.setposition
local getposition=streamreader.getposition
local readbytetable=streamreader.readbytetable
directives.register("fonts.streamreader",function()
 streamreader=utilities.streams
 readstring=streamreader.readstring
 readbyte=streamreader.readcardinal1
 readushort=streamreader.readcardinal2
 readuint=streamreader.readcardinal3
 readulong=streamreader.readcardinal4
 setposition=streamreader.setposition
 getposition=streamreader.getposition
 readbytetable=streamreader.readbytetable
end)
local setmetatableindex=table.setmetatableindex
local trace_charstrings=false trackers.register("fonts.cff.charstrings",function(v) trace_charstrings=v end)
local report=logs.reporter("otf reader","cff")
local parsedictionaries
local parsecharstring
local parsecharstrings
local resetcharstrings
local parseprivates
local startparsing
local stopparsing
local defaultstrings={ [0]=
 ".notdef","space","exclam","quotedbl","numbersign","dollar","percent",
 "ampersand","quoteright","parenleft","parenright","asterisk","plus",
 "comma","hyphen","period","slash","zero","one","two","three","four",
 "five","six","seven","eight","nine","colon","semicolon","less",
 "equal","greater","question","at","A","B","C","D","E","F","G","H",
 "I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W",
 "X","Y","Z","bracketleft","backslash","bracketright","asciicircum",
 "underscore","quoteleft","a","b","c","d","e","f","g","h","i","j",
 "k","l","m","n","o","p","q","r","s","t","u","v","w","x","y",
 "z","braceleft","bar","braceright","asciitilde","exclamdown","cent",
 "sterling","fraction","yen","florin","section","currency",
 "quotesingle","quotedblleft","guillemotleft","guilsinglleft",
 "guilsinglright","fi","fl","endash","dagger","daggerdbl",
 "periodcentered","paragraph","bullet","quotesinglbase","quotedblbase",
 "quotedblright","guillemotright","ellipsis","perthousand","questiondown",
 "grave","acute","circumflex","tilde","macron","breve","dotaccent",
 "dieresis","ring","cedilla","hungarumlaut","ogonek","caron","emdash",
 "AE","ordfeminine","Lslash","Oslash","OE","ordmasculine","ae",
 "dotlessi","lslash","oslash","oe","germandbls","onesuperior",
 "logicalnot","mu","trademark","Eth","onehalf","plusminus","Thorn",
 "onequarter","divide","brokenbar","degree","thorn","threequarters",
 "twosuperior","registered","minus","eth","multiply","threesuperior",
 "copyright","Aacute","Acircumflex","Adieresis","Agrave","Aring",
 "Atilde","Ccedilla","Eacute","Ecircumflex","Edieresis","Egrave",
 "Iacute","Icircumflex","Idieresis","Igrave","Ntilde","Oacute",
 "Ocircumflex","Odieresis","Ograve","Otilde","Scaron","Uacute",
 "Ucircumflex","Udieresis","Ugrave","Yacute","Ydieresis","Zcaron",
 "aacute","acircumflex","adieresis","agrave","aring","atilde",
 "ccedilla","eacute","ecircumflex","edieresis","egrave","iacute",
 "icircumflex","idieresis","igrave","ntilde","oacute","ocircumflex",
 "odieresis","ograve","otilde","scaron","uacute","ucircumflex",
 "udieresis","ugrave","yacute","ydieresis","zcaron","exclamsmall",
 "Hungarumlautsmall","dollaroldstyle","dollarsuperior","ampersandsmall",
 "Acutesmall","parenleftsuperior","parenrightsuperior","twodotenleader",
 "onedotenleader","zerooldstyle","oneoldstyle","twooldstyle",
 "threeoldstyle","fouroldstyle","fiveoldstyle","sixoldstyle",
 "sevenoldstyle","eightoldstyle","nineoldstyle","commasuperior",
 "threequartersemdash","periodsuperior","questionsmall","asuperior",
 "bsuperior","centsuperior","dsuperior","esuperior","isuperior",
 "lsuperior","msuperior","nsuperior","osuperior","rsuperior","ssuperior",
 "tsuperior","ff","ffi","ffl","parenleftinferior","parenrightinferior",
 "Circumflexsmall","hyphensuperior","Gravesmall","Asmall","Bsmall",
 "Csmall","Dsmall","Esmall","Fsmall","Gsmall","Hsmall","Ismall",
 "Jsmall","Ksmall","Lsmall","Msmall","Nsmall","Osmall","Psmall",
 "Qsmall","Rsmall","Ssmall","Tsmall","Usmall","Vsmall","Wsmall",
 "Xsmall","Ysmall","Zsmall","colonmonetary","onefitted","rupiah",
 "Tildesmall","exclamdownsmall","centoldstyle","Lslashsmall",
 "Scaronsmall","Zcaronsmall","Dieresissmall","Brevesmall","Caronsmall",
 "Dotaccentsmall","Macronsmall","figuredash","hypheninferior",
 "Ogoneksmall","Ringsmall","Cedillasmall","questiondownsmall","oneeighth",
 "threeeighths","fiveeighths","seveneighths","onethird","twothirds",
 "zerosuperior","foursuperior","fivesuperior","sixsuperior",
 "sevensuperior","eightsuperior","ninesuperior","zeroinferior",
 "oneinferior","twoinferior","threeinferior","fourinferior",
 "fiveinferior","sixinferior","seveninferior","eightinferior",
 "nineinferior","centinferior","dollarinferior","periodinferior",
 "commainferior","Agravesmall","Aacutesmall","Acircumflexsmall",
 "Atildesmall","Adieresissmall","Aringsmall","AEsmall","Ccedillasmall",
 "Egravesmall","Eacutesmall","Ecircumflexsmall","Edieresissmall",
 "Igravesmall","Iacutesmall","Icircumflexsmall","Idieresissmall",
 "Ethsmall","Ntildesmall","Ogravesmall","Oacutesmall","Ocircumflexsmall",
 "Otildesmall","Odieresissmall","OEsmall","Oslashsmall","Ugravesmall",
 "Uacutesmall","Ucircumflexsmall","Udieresissmall","Yacutesmall",
 "Thornsmall","Ydieresissmall","001.000","001.001","001.002","001.003",
 "Black","Bold","Book","Light","Medium","Regular","Roman","Semibold",
}
local standardnames={ [0]=
 false,false,false,false,false,false,false,false,false,false,false,
 false,false,false,false,false,false,false,false,false,false,false,
 false,false,false,false,false,false,false,false,false,false,
 "space","exclam","quotedbl","numbersign","dollar","percent",
 "ampersand","quoteright","parenleft","parenright","asterisk","plus",
 "comma","hyphen","period","slash","zero","one","two","three","four",
 "five","six","seven","eight","nine","colon","semicolon","less",
 "equal","greater","question","at","A","B","C","D","E","F","G","H",
 "I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W",
 "X","Y","Z","bracketleft","backslash","bracketright","asciicircum",
 "underscore","quoteleft","a","b","c","d","e","f","g","h","i","j",
 "k","l","m","n","o","p","q","r","s","t","u","v","w","x","y",
 "z","braceleft","bar","braceright","asciitilde",false,false,false,
 false,false,false,false,false,false,false,false,false,false,false,
 false,false,false,false,false,false,false,false,false,false,false,
 false,false,false,false,false,false,false,false,false,"exclamdown",
 "cent","sterling","fraction","yen","florin","section","currency",
 "quotesingle","quotedblleft","guillemotleft","guilsinglleft",
 "guilsinglright","fi","fl",false,"endash","dagger","daggerdbl",
 "periodcentered",false,"paragraph","bullet","quotesinglbase",
 "quotedblbase","quotedblright","guillemotright","ellipsis","perthousand",
 false,"questiondown",false,"grave","acute","circumflex","tilde",
 "macron","breve","dotaccent","dieresis",false,"ring","cedilla",false,
 "hungarumlaut","ogonek","caron","emdash",false,false,false,false,
 false,false,false,false,false,false,false,false,false,false,false,
 false,"AE",false,"ordfeminine",false,false,false,false,"Lslash",
 "Oslash","OE","ordmasculine",false,false,false,false,false,"ae",
 false,false,false,"dotlessi",false,false,"lslash","oslash","oe",
 "germandbls",false,false,false,false
}
local cffreaders={
 readbyte,
 readushort,
 readuint,
 readulong,
}
directives.register("fonts.streamreader",function()
 cffreaders={
  readbyte,
  readushort,
  readuint,
  readulong,
 }
end)
local function readheader(f)
 local offset=getposition(f)
 local major=readbyte(f)
 local header={
  offset=offset,
  major=major,
  minor=readbyte(f),
  size=readbyte(f),
 }
 if major==1 then
  header.dsize=readbyte(f)   
 elseif major==2 then
  header.dsize=readushort(f) 
 else
 end
 setposition(f,offset+header.size)
 return header
end
local function readlengths(f,longcount)
 local count=longcount and readulong(f) or readushort(f)
 if count==0 then
  return {}
 end
 local osize=readbyte(f)
 local read=cffreaders[osize]
 if not read then
  report("bad offset size: %i",osize)
  return {}
 end
 local lengths={}
 local previous=read(f)
 for i=1,count do
  local offset=read(f)
  local length=offset-previous
  if length<0 then
   report("bad offset: %i",length)
   length=0
  end
  lengths[i]=length
  previous=offset
 end
 return lengths
end
local function readfontnames(f)
 local names=readlengths(f)
 for i=1,#names do
  names[i]=readstring(f,names[i])
 end
 return names
end
local function readtopdictionaries(f)
 local dictionaries=readlengths(f)
 for i=1,#dictionaries do
  dictionaries[i]=readstring(f,dictionaries[i])
 end
 return dictionaries
end
local function readstrings(f)
 local lengths=readlengths(f)
 local strings=setmetatableindex({},defaultstrings)
 local index=#defaultstrings
 for i=1,#lengths do
  index=index+1
  strings[index]=readstring(f,lengths[i])
 end
 return strings
end
do
 local stack={}
 local top=0
 local result={}
 local strings={}
 local p_single=P("\00")/function()
   result.version=strings[stack[top]] or "unset"
   top=0
  end+P("\01")/function()
   result.notice=strings[stack[top]] or "unset"
   top=0
  end+P("\02")/function()
   result.fullname=strings[stack[top]] or "unset"
   top=0
  end+P("\03")/function()
   result.familyname=strings[stack[top]] or "unset"
   top=0
  end+P("\04")/function()
   result.weight=strings[stack[top]] or "unset"
   top=0
  end+P("\05")/function()
   result.fontbbox={ unpack(stack,1,4) }
   top=0
  end+P("\06")/function()
   result.bluevalues={ unpack(stack,1,top) }
   top=0
  end+P("\07")/function()
   result.otherblues={ unpack(stack,1,top) }
   top=0
  end+P("\08")/function()
   result.familyblues={ unpack(stack,1,top) }
   top=0
  end+P("\09")/function()
   result.familyotherblues={ unpack(stack,1,top) }
   top=0
  end+P("\10")/function()
   result.strhw=stack[top]
   top=0
  end+P("\11")/function()
   result.strvw=stack[top]
   top=0
  end+P("\13")/function()
   result.uniqueid=stack[top]
   top=0
  end+P("\14")/function()
   result.xuid=concat(stack,"",1,top)
   top=0
  end+P("\15")/function()
   result.charset=stack[top]
   top=0
  end+P("\16")/function()
   result.encoding=stack[top]
   top=0
  end+P("\17")/function() 
   result.charstrings=stack[top]
   top=0
  end+P("\18")/function()
   result.private={
    size=stack[top-1],
    offset=stack[top],
   }
   top=0
  end+P("\19")/function()
   result.subroutines=stack[top]
   top=0 
  end+P("\20")/function()
   result.defaultwidthx=stack[top]
   top=0 
  end+P("\21")/function()
   result.nominalwidthx=stack[top]
   top=0 
  end
+P("\24")/function() 
   result.vstore=stack[top]
   top=0
  end+P("\25")/function() 
   result.maxstack=stack[top]
   top=0
  end
 local p_double=P("\12")*(
  P("\00")/function()
   result.copyright=stack[top]
   top=0
  end+P("\01")/function()
   result.monospaced=stack[top]==1 and true or false 
   top=0
  end+P("\02")/function()
   result.italicangle=stack[top]
   top=0
  end+P("\03")/function()
   result.underlineposition=stack[top]
   top=0
  end+P("\04")/function()
   result.underlinethickness=stack[top]
   top=0
  end+P("\05")/function()
   result.painttype=stack[top]
   top=0
  end+P("\06")/function()
   result.charstringtype=stack[top]
   top=0
  end+P("\07")/function() 
   result.fontmatrix={ unpack(stack,1,6) }
   top=0
  end+P("\08")/function()
   result.strokewidth=stack[top]
   top=0
  end+P("\09")/function()
   result.bluescale=stack[top]
   top=0
  end+P("\10")/function()
   result.bluesnap=stack[top]
   top=0
  end+P("\11")/function()
   result.bluefuzz=stack[top]
   top=0
  end+P("\12")/function()
   result.stemsnaph={ unpack(stack,1,top) }
   top=0
  end+P("\13")/function()
   result.stemsnapv={ unpack(stack,1,top) }
   top=0
  end+P("\20")/function()
   result.syntheticbase=stack[top]
   top=0
  end+P("\21")/function()
   result.postscript=strings[stack[top]] or "unset"
   top=0
  end+P("\22")/function()
   result.basefontname=strings[stack[top]] or "unset"
   top=0
  end+P("\21")/function()
   result.basefontblend=stack[top]
   top=0
  end+P("\30")/function()
   result.cid.registry=strings[stack[top-2]] or "unset"
   result.cid.ordering=strings[stack[top-1]] or "unset"
   result.cid.supplement=stack[top]
   top=0
  end+P("\31")/function()
   result.cid.fontversion=stack[top]
   top=0
  end+P("\32")/function()
   result.cid.fontrevision=stack[top]
   top=0
  end+P("\33")/function()
   result.cid.fonttype=stack[top]
   top=0
  end+P("\34")/function()
   result.cid.count=stack[top]
   top=0
  end+P("\35")/function()
   result.cid.uidbase=stack[top]
   top=0
  end+P("\36")/function() 
   result.cid.fdarray=stack[top]
   top=0
  end+P("\37")/function() 
   result.cid.fdselect=stack[top]
   top=0
  end+P("\38")/function()
   result.cid.fontname=strings[stack[top]] or "unset"
   top=0
  end
 )
 local remap={
  ["\x00"]="00",["\x01"]="01",["\x02"]="02",["\x03"]="03",["\x04"]="04",["\x05"]="05",["\x06"]="06",["\x07"]="07",["\x08"]="08",["\x09"]="09",["\x0A"]="0.",["\x0B"]="0E",["\x0C"]="0E-",["\x0D"]="0",["\x0E"]="0-",["\x0F"]="0",
  ["\x10"]="10",["\x11"]="11",["\x12"]="12",["\x13"]="13",["\x14"]="14",["\x15"]="15",["\x16"]="16",["\x17"]="17",["\x18"]="18",["\x19"]="19",["\x1A"]="1.",["\x1B"]="1E",["\x1C"]="1E-",["\x1D"]="1",["\x1E"]="1-",["\x1F"]="1",
  ["\x20"]="20",["\x21"]="21",["\x22"]="22",["\x23"]="23",["\x24"]="24",["\x25"]="25",["\x26"]="26",["\x27"]="27",["\x28"]="28",["\x29"]="29",["\x2A"]="2.",["\x2B"]="2E",["\x2C"]="2E-",["\x2D"]="2",["\x2E"]="2-",["\x2F"]="2",
  ["\x30"]="30",["\x31"]="31",["\x32"]="32",["\x33"]="33",["\x34"]="34",["\x35"]="35",["\x36"]="36",["\x37"]="37",["\x38"]="38",["\x39"]="39",["\x3A"]="3.",["\x3B"]="3E",["\x3C"]="3E-",["\x3D"]="3",["\x3E"]="3-",["\x3F"]="3",
  ["\x40"]="40",["\x41"]="41",["\x42"]="42",["\x43"]="43",["\x44"]="44",["\x45"]="45",["\x46"]="46",["\x47"]="47",["\x48"]="48",["\x49"]="49",["\x4A"]="4.",["\x4B"]="4E",["\x4C"]="4E-",["\x4D"]="4",["\x4E"]="4-",["\x4F"]="4",
  ["\x50"]="50",["\x51"]="51",["\x52"]="52",["\x53"]="53",["\x54"]="54",["\x55"]="55",["\x56"]="56",["\x57"]="57",["\x58"]="58",["\x59"]="59",["\x5A"]="5.",["\x5B"]="5E",["\x5C"]="5E-",["\x5D"]="5",["\x5E"]="5-",["\x5F"]="5",
  ["\x60"]="60",["\x61"]="61",["\x62"]="62",["\x63"]="63",["\x64"]="64",["\x65"]="65",["\x66"]="66",["\x67"]="67",["\x68"]="68",["\x69"]="69",["\x6A"]="6.",["\x6B"]="6E",["\x6C"]="6E-",["\x6D"]="6",["\x6E"]="6-",["\x6F"]="6",
  ["\x70"]="70",["\x71"]="71",["\x72"]="72",["\x73"]="73",["\x74"]="74",["\x75"]="75",["\x76"]="76",["\x77"]="77",["\x78"]="78",["\x79"]="79",["\x7A"]="7.",["\x7B"]="7E",["\x7C"]="7E-",["\x7D"]="7",["\x7E"]="7-",["\x7F"]="7",
  ["\x80"]="80",["\x81"]="81",["\x82"]="82",["\x83"]="83",["\x84"]="84",["\x85"]="85",["\x86"]="86",["\x87"]="87",["\x88"]="88",["\x89"]="89",["\x8A"]="8.",["\x8B"]="8E",["\x8C"]="8E-",["\x8D"]="8",["\x8E"]="8-",["\x8F"]="8",
  ["\x90"]="90",["\x91"]="91",["\x92"]="92",["\x93"]="93",["\x94"]="94",["\x95"]="95",["\x96"]="96",["\x97"]="97",["\x98"]="98",["\x99"]="99",["\x9A"]="9.",["\x9B"]="9E",["\x9C"]="9E-",["\x9D"]="9",["\x9E"]="9-",["\x9F"]="9",
  ["\xA0"]=".0",["\xA1"]=".1",["\xA2"]=".2",["\xA3"]=".3",["\xA4"]=".4",["\xA5"]=".5",["\xA6"]=".6",["\xA7"]=".7",["\xA8"]=".8",["\xA9"]=".9",["\xAA"]="..",["\xAB"]=".E",["\xAC"]=".E-",["\xAD"]=".",["\xAE"]=".-",["\xAF"]=".",
  ["\xB0"]="E0",["\xB1"]="E1",["\xB2"]="E2",["\xB3"]="E3",["\xB4"]="E4",["\xB5"]="E5",["\xB6"]="E6",["\xB7"]="E7",["\xB8"]="E8",["\xB9"]="E9",["\xBA"]="E.",["\xBB"]="EE",["\xBC"]="EE-",["\xBD"]="E",["\xBE"]="E-",["\xBF"]="E",
  ["\xC0"]="E-0",["\xC1"]="E-1",["\xC2"]="E-2",["\xC3"]="E-3",["\xC4"]="E-4",["\xC5"]="E-5",["\xC6"]="E-6",["\xC7"]="E-7",["\xC8"]="E-8",["\xC9"]="E-9",["\xCA"]="E-.",["\xCB"]="E-E",["\xCC"]="E-E-",["\xCD"]="E-",["\xCE"]="E--",["\xCF"]="E-",
  ["\xD0"]="-0",["\xD1"]="-1",["\xD2"]="-2",["\xD3"]="-3",["\xD4"]="-4",["\xD5"]="-5",["\xD6"]="-6",["\xD7"]="-7",["\xD8"]="-8",["\xD9"]="-9",["\xDA"]="-.",["\xDB"]="-E",["\xDC"]="-E-",["\xDD"]="-",["\xDE"]="--",["\xDF"]="-",
 }
 local p_last=S("\x0F\x1F\x2F\x3F\x4F\x5F\x6F\x7F\x8F\x9F\xAF\xBF")+R("\xF0\xFF")
 local p_nibbles=P("\30")*Cs(((1-p_last)/remap)^0*(P(1)/remap))/function(n)
  top=top+1
  stack[top]=tonumber(n) or 0
 end
 local p_byte=C(R("\32\246"))/function(b0)
  top=top+1
  stack[top]=byte(b0)-139
 end
 local p_positive=C(R("\247\250"))*C(1)/function(b0,b1)
  top=top+1
  stack[top]=(byte(b0)-247)*256+byte(b1)+108
 end
 local p_negative=C(R("\251\254"))*C(1)/function(b0,b1)
  top=top+1
  stack[top]=-(byte(b0)-251)*256-byte(b1)-108
 end
 local p_short=P("\28")*C(1)*C(1)/function(b1,b2)
  top=top+1
  local n=0x100*byte(b1)+byte(b2)
  if n>=0x8000 then
   stack[top]=n-0xFFFF-1
  else
   stack[top]=n
  end
 end
 local p_long=P("\29")*C(1)*C(1)*C(1)*C(1)/function(b1,b2,b3,b4)
  top=top+1
  local n=0x1000000*byte(b1)+0x10000*byte(b2)+0x100*byte(b3)+byte(b4)
  if n>=0x8000000 then
   stack[top]=n-0xFFFFFFFF-1
  else
   stack[top]=n
  end
 end
 local p_unsupported=P(1)/function(detail)
  top=0
 end
 local p_dictionary=(
  p_byte+p_positive+p_negative+p_short+p_long+p_nibbles+p_single+p_double+p_unsupported
 )^1
 parsedictionaries=function(data,dictionaries,what)
  stack={}
  strings=data.strings
  for i=1,#dictionaries do
   top=0
   result=what=="cff" and {
    monospaced=false,
    italicangle=0,
    underlineposition=-100,
    underlinethickness=50,
    painttype=0,
    charstringtype=2,
    fontmatrix={ 0.001,0,0,0.001,0,0 },
    fontbbox={ 0,0,0,0 },
    strokewidth=0,
    charset=0,
    encoding=0,
    cid={
     fontversion=0,
     fontrevision=0,
     fonttype=0,
     count=8720,
    }
   } or {
    charstringtype=2,
    charset=0,
    vstore=0,
    cid={
    },
   }
   lpegmatch(p_dictionary,dictionaries[i])
   dictionaries[i]=result
  end
  result={}
  top=0
  stack={}
 end
 parseprivates=function(data,dictionaries)
  stack={}
  strings=data.strings
  for i=1,#dictionaries do
   local private=dictionaries[i].private
   if private and private.data then
    top=0
    result={
     forcebold=false,
     languagegroup=0,
     expansionfactor=0.06,
     initialrandomseed=0,
     subroutines=0,
     defaultwidthx=0,
     nominalwidthx=0,
     cid={
     },
    }
    lpegmatch(p_dictionary,private.data)
    private.data=result
   end
  end
  result={}
  top=0
  stack={}
 end
 local x=0
 local y=0
 local width=false
 local lsb=0
 local r=0
 local stems=0
 local globalbias=0
 local localbias=0
 local nominalwidth=0
 local defaultwidth=0
 local charset=false
 local globals=false
 local locals=false
 local depth=1
 local xmin=0
 local xmax=0
 local ymin=0
 local ymax=0
 local checked=false
 local keepcurve=false
 local version=2
 local regions=false
 local nofregions=0
 local region=false
 local factors=false
 local axis=false
 local vsindex=0
 local justpass=false
 local seacs={}
 local procidx=nil
 local function showstate(where)
  report("%w%-10s : [%s] n=%i",depth*2,where,concat(stack," ",1,top),top)
 end
 local function showvalue(where,value,showstack)
  if showstack then
   report("%w%-10s : %s : [%s] n=%i",depth*2,where,tostring(value),concat(stack," ",1,top),top)
  else
   report("%w%-10s : %s",depth*2,where,tostring(value))
  end
 end
 local function xymoveto()
  if keepcurve then
   r=r+1
   result[r]={ x,y,"m" }
  end
  if checked then
   if x>xmax then xmax=x elseif x<xmin then xmin=x end
   if y>ymax then ymax=y elseif y<ymin then ymin=y end
  else
   xmin=x
   ymin=y
   xmax=x
   ymax=y
   checked=true
  end
 end
 local function xmoveto() 
  if keepcurve then
   r=r+1
   result[r]={ x,y,"m" }
  end
  if not checked then
   xmin=x
   ymin=y
   xmax=x
   ymax=y
   checked=true
  elseif x>xmax then
   xmax=x
  elseif x<xmin then
   xmin=x
  end
 end
 local function ymoveto() 
  if keepcurve then
   r=r+1
   result[r]={ x,y,"m" }
  end
  if not checked then
   xmin=x
   ymin=y
   xmax=x
   ymax=y
   checked=true
  elseif y>ymax then
   ymax=y
  elseif y<ymin then
   ymin=y
  end
 end
 local function moveto()
  if trace_charstrings then
   showstate("moveto")
  end
  top=0 
  xymoveto()
 end
 local function xylineto() 
  if keepcurve then
   r=r+1
   result[r]={ x,y,"l" }
  end
  if checked then
   if x>xmax then xmax=x elseif x<xmin then xmin=x end
   if y>ymax then ymax=y elseif y<ymin then ymin=y end
  else
   xmin=x
   ymin=y
   xmax=x
   ymax=y
   checked=true
  end
 end
 local function xlineto() 
  if keepcurve then
   r=r+1
   result[r]={ x,y,"l" }
  end
  if not checked then
   xmin=x
   ymin=y
   xmax=x
   ymax=y
   checked=true
  elseif x>xmax then
   xmax=x
  elseif x<xmin then
   xmin=x
  end
 end
 local function ylineto() 
  if keepcurve then
   r=r+1
   result[r]={ x,y,"l" }
  end
  if not checked then
   xmin=x
   ymin=y
   xmax=x
   ymax=y
   checked=true
  elseif y>ymax then
   ymax=y
  elseif y<ymin then
   ymin=y
  end
 end
 local function xycurveto(x1,y1,x2,y2,x3,y3) 
  if trace_charstrings then
   showstate("curveto")
  end
  if keepcurve then
   r=r+1
   result[r]={ x1,y1,x2,y2,x3,y3,"c" }
  end
  if checked then
   if x1>xmax then xmax=x1 elseif x1<xmin then xmin=x1 end
   if y1>ymax then ymax=y1 elseif y1<ymin then ymin=y1 end
  else
   xmin=x1
   ymin=y1
   xmax=x1
   ymax=y1
   checked=true
  end
  if x2>xmax then xmax=x2 elseif x2<xmin then xmin=x2 end
  if y2>ymax then ymax=y2 elseif y2<ymin then ymin=y2 end
  if x3>xmax then xmax=x3 elseif x3<xmin then xmin=x3 end
  if y3>ymax then ymax=y3 elseif y3<ymin then ymin=y3 end
 end
 local function rmoveto()
  if not width then
   if top>2 then
    width=stack[1]
    if trace_charstrings then
     showvalue("backtrack width",width)
    end
   else
    width=true
   end
  end
  if trace_charstrings then
   showstate("rmoveto")
  end
  x=x+stack[top-1] 
  y=y+stack[top]   
  top=0
  xymoveto()
 end
 local function hmoveto()
  if not width then
   if top>1 then
    width=stack[1]
    if trace_charstrings then
     showvalue("backtrack width",width)
    end
   else
    width=true
   end
  end
  if trace_charstrings then
   showstate("hmoveto")
  end
  x=x+stack[top] 
  top=0
  xmoveto()
 end
 local function vmoveto()
  if not width then
   if top>1 then
    width=stack[1]
    if trace_charstrings then
     showvalue("backtrack width",width)
    end
   else
    width=true
   end
  end
  if trace_charstrings then
   showstate("vmoveto")
  end
  y=y+stack[top] 
  top=0
  ymoveto()
 end
 local function rlineto()
  if trace_charstrings then
   showstate("rlineto")
  end
  for i=1,top,2 do
   x=x+stack[i]   
   y=y+stack[i+1] 
   xylineto()
  end
  top=0
 end
 local function hlineto() 
  if trace_charstrings then
   showstate("hlineto")
  end
  if top==1 then
   x=x+stack[1]
   xlineto()
  else
   local swap=true
   for i=1,top do
    if swap then
     x=x+stack[i]
     xlineto()
     swap=false
    else
     y=y+stack[i]
     ylineto()
     swap=true
    end
   end
  end
  top=0
 end
 local function vlineto() 
  if trace_charstrings then
   showstate("vlineto")
  end
  if top==1 then
   y=y+stack[1]
   ylineto()
  else
   local swap=false
   for i=1,top do
    if swap then
     x=x+stack[i]
     xlineto()
     swap=false
    else
     y=y+stack[i]
     ylineto()
     swap=true
    end
   end
  end
  top=0
 end
 local function rrcurveto()
  if trace_charstrings then
   showstate("rrcurveto")
  end
  for i=1,top,6 do
   local ax=x+stack[i]   
   local ay=y+stack[i+1] 
   local bx=ax+stack[i+2] 
   local by=ay+stack[i+3] 
   x=bx+stack[i+4]  
   y=by+stack[i+5]  
   xycurveto(ax,ay,bx,by,x,y)
  end
  top=0
 end
 local function hhcurveto()
  if trace_charstrings then
   showstate("hhcurveto")
  end
  local s=1
  if top%2~=0 then
   y=y+stack[1]     
   s=2
  end
  for i=s,top,4 do
   local ax=x+stack[i] 
   local ay=y
   local bx=ax+stack[i+1] 
   local by=ay+stack[i+2] 
   x=bx+stack[i+3]  
   y=by
   xycurveto(ax,ay,bx,by,x,y)
  end
  top=0
 end
 local function vvcurveto()
  if trace_charstrings then
   showstate("vvcurveto")
  end
  local s=1
  local d=0
  if top%2~=0 then
   d=stack[1]      
   s=2
  end
  for i=s,top,4 do
   local ax=x+d
   local ay=y+stack[i] 
   local bx=ax+stack[i+1] 
   local by=ay+stack[i+2] 
   x=bx
   y=by+stack[i+3]  
   xycurveto(ax,ay,bx,by,x,y)
   d=0
  end
  top=0
 end
 local function xxcurveto(swap)
  local last=top%4~=0 and stack[top]
  if last then
   top=top-1
  end
  for i=1,top,4 do
   local ax,ay,bx,by
   if swap then
    ax=x+stack[i]
    ay=y
    bx=ax+stack[i+1]
    by=ay+stack[i+2]
    y=by+stack[i+3]
    if last and i+3==top then
     x=bx+last
    else
     x=bx
    end
    swap=false
   else
    ax=x
    ay=y+stack[i]
    bx=ax+stack[i+1]
    by=ay+stack[i+2]
    x=bx+stack[i+3]
    if last and i+3==top then
     y=by+last
    else
     y=by
    end
    swap=true
   end
   xycurveto(ax,ay,bx,by,x,y)
  end
  top=0
 end
 local function hvcurveto()
  if trace_charstrings then
   showstate("hvcurveto")
  end
  xxcurveto(true)
 end
 local function vhcurveto()
  if trace_charstrings then
   showstate("vhcurveto")
  end
  xxcurveto(false)
 end
 local function rcurveline()
  if trace_charstrings then
   showstate("rcurveline")
  end
  for i=1,top-2,6 do
   local ax=x+stack[i]   
   local ay=y+stack[i+1] 
   local bx=ax+stack[i+2] 
   local by=ay+stack[i+3] 
   x=bx+stack[i+4] 
   y=by+stack[i+5] 
   xycurveto(ax,ay,bx,by,x,y)
  end
  x=x+stack[top-1] 
  y=y+stack[top]   
  xylineto()
  top=0
 end
 local function rlinecurve()
  if trace_charstrings then
   showstate("rlinecurve")
  end
  if top>6 then
   for i=1,top-6,2 do
    x=x+stack[i]
    y=y+stack[i+1]
    xylineto()
   end
  end
  local ax=x+stack[top-5]
  local ay=y+stack[top-4]
  local bx=ax+stack[top-3]
  local by=ay+stack[top-2]
  x=bx+stack[top-1]
  y=by+stack[top]
  xycurveto(ax,ay,bx,by,x,y)
  top=0
 end
 local function flex() 
  if trace_charstrings then
   showstate("flex")
  end
  local ax=x+stack[1]  
  local ay=y+stack[2]  
  local bx=ax+stack[3]  
  local by=ay+stack[4]  
  local cx=bx+stack[5]  
  local cy=by+stack[6]  
  xycurveto(ax,ay,bx,by,cx,cy)
  local dx=cx+stack[7]  
  local dy=cy+stack[8]  
  local ex=dx+stack[9]  
  local ey=dy+stack[10] 
  x=ex+stack[11]  
  y=ey+stack[12]  
  xycurveto(dx,dy,ex,ey,x,y)
  top=0
 end
 local function hflex()
  if trace_charstrings then
   showstate("hflex")
  end
  local ax=x+stack[1] 
  local ay=y
  local bx=ax+stack[2] 
  local by=ay+stack[3] 
  local cx=bx+stack[4] 
  local cy=by
  xycurveto(ax,ay,bx,by,cx,cy)
  local dx=cx+stack[5] 
  local dy=by
  local ex=dx+stack[6] 
  local ey=y
  x=ex+stack[7]  
  xycurveto(dx,dy,ex,ey,x,y)
  top=0
 end
 local function hflex1()
  if trace_charstrings then
   showstate("hflex1")
  end
  local ax=x+stack[1] 
  local ay=y+stack[2] 
  local bx=ax+stack[3] 
  local by=ay+stack[4] 
  local cx=bx+stack[5] 
  local cy=by
  xycurveto(ax,ay,bx,by,cx,cy)
  local dx=cx+stack[6] 
  local dy=by
  local ex=dx+stack[7] 
  local ey=dy+stack[8] 
  x=ex+stack[9]  
  xycurveto(dx,dy,ex,ey,x,y)
  top=0
 end
 local function flex1()
  if trace_charstrings then
   showstate("flex1")
  end
  local ax=x+stack[1]  
  local ay=y+stack[2]  
  local bx=ax+stack[3]  
  local by=ay+stack[4]  
  local cx=bx+stack[5]  
  local cy=by+stack[6]  
  xycurveto(ax,ay,bx,by,cx,cy)
  local dx=cx+stack[7]  
  local dy=cy+stack[8]  
  local ex=dx+stack[9]  
  local ey=dy+stack[10] 
  if abs(ex-x)>abs(ey-y) then 
   x=ex+stack[11]
  else
   y=ey+stack[11]
  end
  xycurveto(dx,dy,ex,ey,x,y)
  top=0
 end
 local function getstem()
  if top==0 then
  elseif top%2~=0 then
   if width then
    remove(stack,1)
   else
    width=remove(stack,1)
    if trace_charstrings then
     showvalue("width",width)
    end
   end
   top=top-1
  end
  if trace_charstrings then
   showstate("stem")
  end
  stems=stems+idiv(top,2)
  top=0
 end
 local function getmask()
  if top==0 then
  elseif top%2~=0 then
   if width then
    remove(stack,1)
   else
    width=remove(stack,1)
    if trace_charstrings then
     showvalue("width",width)
    end
   end
   top=top-1
  end
  if trace_charstrings then
   showstate(operator==19 and "hintmark" or "cntrmask")
  end
  stems=stems+idiv(top,2)
  top=0
  if stems==0 then
  elseif stems<=8 then
   return 1
  else
   return idiv(stems+7,8)
  end
 end
 local function unsupported(t)
  if trace_charstrings then
   showstate("unsupported "..t)
  end
  top=0
 end
 local function unsupportedsub(t)
  if trace_charstrings then
   showstate("unsupported sub "..t)
  end
  top=0
 end
 local function getstem3()
  if trace_charstrings then
   showstate("stem3")
  end
  top=0
 end
 local function divide()
  if version=="cff" then
   local d=stack[top]
   top=top-1
   stack[top]=stack[top]/d
  end
 end
 local function closepath()
  if version=="cff" then
   if trace_charstrings then
    showstate("closepath")
   end
  end
  top=0
 end
 local function hsbw()
  if version=="cff" then
   if trace_charstrings then
    showstate("hsbw")
   end
   lsb=stack[top-1] or 0
   width=stack[top]
  end
  top=0
 end
 local function sbw()
  if version=="cff" then
   if trace_charstrings then
    showstate("sbw")
   end
   lsb=stack[top-3]
   width=stack[top-1]
  end
  top=0
 end
 local function seac()
  if version=="cff" then
   if trace_charstrings then
    showstate("seac")
   end
  end
  top=0
 end
 local popped=3
 local hints=3
 local function callothersubr()
  if version=="cff" then
   if trace_charstrings then
    showstate("callothersubr")
   end
   if stack[top]==hints then
    popped=stack[top-2]
   else
    popped=3
   end
   local t=stack[top-1]
   if t then
    top=top-(t+2)
    if top<0 then
     top=0
    end
   else
    top=0
   end
  else
   top=0
  end
 end
 local function pop()
  if version=="cff" then
   if trace_charstrings then
    showstate("pop")
   end
   top=top+1
   stack[top]=popped
  else
   top=0
  end
 end
 local function setcurrentpoint()
  if version=="cff" then
   if trace_charstrings then
    showstate("setcurrentpoint (unsupported)")
   end
   x=x+stack[top-1]
   y=y+stack[top]
  end
  top=0
 end
 local reginit=false
 local function updateregions(n) 
  if regions then
   local current=regions[n] or regions[1]
   nofregions=#current
   if axis and n~=reginit then
    factors={}
    for i=1,nofregions do
     local region=current[i]
     local s=1
     for j=1,#axis do
      local f=axis[j]
      local r=region[j]
      local start=r.start
      local peak=r.peak
      local stop=r.stop
      if start>peak or peak>stop then
      elseif start<0 and stop>0 and peak~=0 then
      elseif peak==0 then
      elseif f<start or f>stop then
       s=0
       break
      elseif f<peak then
       s=s*(f-start)/(peak-start)
      elseif f>peak then
       s=s*(stop-f)/(stop-peak)
      else
      end
     end
     factors[i]=s
    end
   end
  end
  reginit=n
 end
 local function setvsindex()
  local vsindex=stack[top]
  if trace_charstrings then
   showstate(formatters["vsindex %i"](vsindex))
  end
  updateregions(vsindex)
  top=top-1
 end
 local function blend()
  local n=stack[top]
  top=top-1
  if axis then
   if trace_charstrings then
    local t=top-nofregions*n
    local m=t-n
    for i=1,n do
     local k=m+i
     local d=m+n+(i-1)*nofregions
     local old=stack[k]
     local new=old
     for r=1,nofregions do
      new=new+stack[d+r]*factors[r]
     end
     stack[k]=new
     showstate(formatters["blend %i of %i: %s -> %s"](i,n,old,new))
    end
    top=t
   elseif n==1 then
    top=top-nofregions
    local v=stack[top]
    for r=1,nofregions do
     v=v+stack[top+r]*factors[r]
    end
    stack[top]=v
   else
    top=top-nofregions*n
    local d=top
    local k=top-n
    for i=1,n do
     k=k+1
     local v=stack[k]
     for r=1,nofregions do
      v=v+stack[d+r]*factors[r]
     end
     stack[k]=v
     d=d+nofregions
    end
   end
  else
  end
 end
 local actions={ [0]=unsupported,
  getstem,
  unsupported,
  getstem,
  vmoveto,
  rlineto,
  hlineto,
  vlineto,
  rrcurveto,
  unsupported,
  unsupported,
  unsupported,
  unsupported,
  hsbw,
  unsupported,
  setvsindex,
  blend,
  unsupported,
  getstem,
  getmask,
  getmask,
  rmoveto,
  hmoveto,
  getstem,
  rcurveline,
  rlinecurve,
  vvcurveto,
  hhcurveto,
  unsupported,
  unsupported,
  vhcurveto,
  hvcurveto,
 }
 local reverse={ [0]="unsupported",
  "getstem",
  "unsupported",
  "getstem",
  "vmoveto",
  "rlineto",
  "hlineto",
  "vlineto",
  "rrcurveto",
  "unsupported",
  "unsupported",
  "unsupported",
  "unsupported",
  "hsbw",
  "unsupported",
  "setvsindex",
  "blend",
  "unsupported",
  "getstem",
  "getmask",
  "getmask",
  "rmoveto",
  "hmoveto",
  "getstem",
  "rcurveline",
  "rlinecurve",
  "vvcurveto",
  "hhcurveto",
  "unsupported",
  "unsupported",
  "vhcurveto",
  "hvcurveto",
 }
 local subactions={
  [000]=dotsection,
  [001]=getstem3,
  [002]=getstem3,
  [006]=seac,
  [007]=sbw,
  [012]=divide,
  [016]=callothersubr,
  [017]=pop,
  [033]=setcurrentpoint,
  [034]=hflex,
  [035]=flex,
  [036]=hflex1,
  [037]=flex1,
 }
 local chars=setmetatableindex(function (t,k)
  local v=char(k)
  t[k]=v
  return v
 end)
 local c_endchar=chars[14]
 local encode={}
 setmetatableindex(encode,function(t,i)
  for i=-2048,-1130 do
   t[i]=char(28,band(rshift(i,8),0xFF),band(i,0xFF))
  end
  for i=-1131,-108 do
   local v=0xFB00-i-108
   t[i]=char(band(rshift(v,8),0xFF),band(v,0xFF))
  end
  for i=-107,107 do
   t[i]=chars[i+139]
  end
  for i=108,1131 do
   local v=0xF700+i-108
   t[i]=char(extract(v,8,8),extract(v,0,8))
  end
  for i=1132,2048 do
   t[i]=char(28,band(rshift(i,8),0xFF),band(i,0xFF))
  end
  setmetatableindex(encode,function(t,k)
   local r=round(k)
   local v=rawget(t,r)
   if v then
    return v
   end
   local v1=floor(k)
   local v2=floor((k-v1)*0x10000)
   return char(255,extract(v1,8,8),extract(v1,0,8),extract(v2,8,8),extract(v2,0,8))
  end)
  return t[i]
 end)
 readers.cffencoder=encode
 local function p_setvsindex()
  local vsindex=stack[top]
  updateregions(vsindex)
  top=top-1
 end
 local function p_blend()
  local n=stack[top]
  top=top-1
  if not axis then
  elseif n==1 then
   top=top-nofregions
   local v=stack[top]
   for r=1,nofregions do
    v=v+stack[top+r]*factors[r]
   end
   stack[top]=round(v)
  else
   top=top-nofregions*n
   local d=top
   local k=top-n
   for i=1,n do
    k=k+1
    local v=stack[k]
    for r=1,nofregions do
     v=v+stack[d+r]*factors[r]
    end
    stack[k]=round(v)
    d=d+nofregions
   end
  end
 end
 local function p_getstem()
  local n=0
  if top%2~=0 then
   n=1
  end
  if top>n then
   stems=stems+idiv(top-n,2)
  end
 end
 local function p_getmask()
  local n=0
  if top%2~=0 then
   n=1
  end
  if top>n then
   stems=stems+idiv(top-n,2)
  end
  if stems==0 then
   return 0
  elseif stems<=8 then
   return 1
  else
   return idiv(stems+7,8)
  end
 end
 local process
 local function call(scope,list,bias) 
  depth=depth+1
  if top==0 then
   showstate(formatters["unknown %s call %s, case %s"](scope,"?",1))
   top=0
  else
   local index=stack[top]+bias
   top=top-1
   if trace_charstrings then
    showvalue(scope,index,true)
   end
   local tab=list[index]
   if tab then
    process(tab)
   else
    showstate(formatters["unknown %s call %s, case %s"](scope,index,2))
    top=0
   end
  end
  depth=depth-1
 end
 process=function(tab)
  local i=1
  local n=#tab
  while i<=n do
   local t=tab[i]
   if t>=32 then
    top=top+1
    if t<=246 then
     stack[top]=t-139
     i=i+1
    elseif t<=250 then
     stack[top]=t*256-63124+tab[i+1]
     i=i+2
    elseif t<=254 then
     stack[top]=-t*256+64148-tab[i+1]
     i=i+2
    else
     local n=0x100*tab[i+1]+tab[i+2]
     if n>=0x8000 then
      stack[top]=n-0x10000+(0x100*tab[i+3]+tab[i+4])/0xFFFF
     else
      stack[top]=n+(0x100*tab[i+3]+tab[i+4])/0xFFFF
     end
     i=i+5
    end
   elseif t==28 then
    top=top+1
    local n=0x100*tab[i+1]+tab[i+2]
    if n>=0x8000 then
     stack[top]=n-0x10000
    else
     stack[top]=n
    end
    i=i+3
   elseif t==11 then 
    if trace_charstrings then
     showstate("return")
    end
    return
   elseif t==10 then
    call("local",locals,localbias) 
    i=i+1
   elseif t==14 then 
    if width then
    elseif top>0 then
     width=stack[1]
     if trace_charstrings then
      showvalue("width",width)
     end
    else
     width=true
    end
    if trace_charstrings then
     showstate("endchar")
    end
    return
   elseif t==29 then
    call("global",globals,globalbias) 
    i=i+1
   elseif t==12 then
    i=i+1
    local t=tab[i]
    if justpass then
     if t>=34 and t<=37 then 
      for i=1,top do
       r=r+1;result[r]=encode[stack[i]]
      end
      r=r+1;result[r]=chars[12]
      r=r+1;result[r]=chars[t]
      top=0
     elseif t==6 then
      seacs[procidx]={
       asb=stack[1],
       adx=stack[2],
       ady=stack[3],
       base=stack[4],
       accent=stack[5],
       width=width,
       lsb=lsb,
      }
      top=0
     else
      local a=subactions[t]
      if a then
       a(t)
      else
       top=0
      end
     end
    else
     local a=subactions[t]
     if a then
      a(t)
     else
      if trace_charstrings then
       showvalue("<subaction>",t)
      end
      top=0
     end
    end
    i=i+1
   elseif justpass then
    if t==15 then
     p_setvsindex()
     i=i+1
    elseif t==16 then
     local s=p_blend() or 0
     i=i+s+1
    elseif t==1 or t==3 or t==18 or operation==23 then
     p_getstem() 
     if true then
      if top>0 then
       for i=1,top do
        r=r+1;result[r]=encode[stack[i]]
       end
       top=0
      end
      r=r+1;result[r]=chars[t]
     else
      top=0
     end
     i=i+1
    elseif t==19 or t==20 then
     local s=p_getmask() or 0 
     if true then
      if top>0 then
       for i=1,top do
        r=r+1;result[r]=encode[stack[i]]
       end
       top=0
      end
      r=r+1;result[r]=chars[t]
      for j=1,s do
       i=i+1
       r=r+1;result[r]=chars[tab[i]]
      end
     else
      i=i+s
      top=0
     end
     i=i+1
    elseif t==9 then
     top=0
     i=i+1
    elseif t==13 then
     hsbw()
     if version=="cff" then
      r=r+1;result[r]=encode[lsb]
      r=r+1;result[r]=chars[22]
     else
     end
     i=i+1
    else
     if trace_charstrings then
      showstate(reverse[t] or "<action>")
     end
     if top>0 then
      for i=1,top do
       r=r+1;result[r]=encode[stack[i]]
      end
      top=0
     end
     r=r+1;result[r]=chars[t]
     i=i+1
    end
   else
    local a=actions[t]
    if a then
     local s=a(t)
     if s then
      i=i+s+1
     else
      i=i+1
     end
    else
     if trace_charstrings then
      showstate(reverse[t] or "<action>")
     end
     top=0
     i=i+1
    end
   end
  end
 end
 local function setbias(globals,locals,nobias)
  if nobias then
   return 0,0
  else
   local g=#globals
   local l=#locals
   return
    ((g<1240 and 107) or (g<33900 and 1131) or 32768)+1,
    ((l<1240 and 107) or (l<33900 and 1131) or 32768)+1
  end
 end
 local function processshape(tab,index,hack)
  if not tab then
   glyphs[index]={
    boundingbox={ 0,0,0,0 },
    width=0,
    name=charset and charset[index] or nil,
   }
   return
  end
  tab=bytetable(tab)
  x=0
  y=0
  width=false
  lsb=0
  r=0
  top=0
  stems=0
  result={} 
  popped=3
  procidx=index
  xmin=0
  xmax=0
  ymin=0
  ymax=0
  checked=false
  if trace_charstrings then
   report("glyph: %i",index)
   report("data : % t",tab)
  end
  if regions then
   updateregions(vsindex)
  end
  process(tab)
  if hack then
   return x,y
  end
  local boundingbox={
   round(xmin),
   round(ymin),
   round(xmax),
   round(ymax),
  }
  if width==true or width==false then
   width=defaultwidth
  else
   width=nominalwidth+width
  end
  local glyph=glyphs[index] 
  if justpass then
   r=r+1
   result[r]=c_endchar
   local stream=concat(result)
   if glyph then
    glyph.stream=stream
   else
    glyphs[index]={ stream=stream }
   end
  elseif glyph then
   glyph.segments=keepcurve~=false and result or nil
   glyph.boundingbox=boundingbox
   if not glyph.width then
    glyph.width=width
   end
   if charset and not glyph.name then
    glyph.name=charset[index]
   end
  elseif keepcurve then
   glyphs[index]={
    segments=result,
    boundingbox=boundingbox,
    width=width,
    name=charset and charset[index] or nil,
   }
  else
   glyphs[index]={
    boundingbox=boundingbox,
    width=width,
    name=charset and charset[index] or nil,
   }
  end
  if trace_charstrings then
   report("width      : %s",tostring(width))
   report("boundingbox: % t",boundingbox)
  end
 end
 startparsing=function(fontdata,data,streams)
  reginit=false
  axis=false
  regions=data.regions
  justpass=streams==true
  popped=3
  seacs={}
  if regions then
   regions={ regions } 
   axis=data.factors or false
  end
 end
 stopparsing=function(fontdata,data)
  stack={}
  glyphs=false
  result={}
  top=0
  locals=false
  globals=false
  strings=false
  popped=3
  seacs={}
 end
 local function setwidths(private)
  if not private then
   return 0,0
  end
  local privatedata=private.data
  if not privatedata then
   return 0,0
  end
  return privatedata.nominalwidthx or 0,privatedata.defaultwidthx or 0
 end
 parsecharstrings=function(fontdata,data,glphs,doshapes,tversion,streams,nobias)
  local dictionary=data.dictionaries[1]
  local charstrings=dictionary.charstrings
  keepcurve=doshapes
  version=tversion
  strings=data.strings
  globals=data.routines or {}
  locals=dictionary.subroutines or {}
  charset=dictionary.charset
  vsindex=dictionary.vsindex or 0
  glyphs=glphs or {}
  globalbias,localbias=setbias(globals,locals,nobias)
  nominalwidth,defaultwidth=setwidths(dictionary.private)
  if charstrings then
   startparsing(fontdata,data,streams)
   for index=1,#charstrings do
    processshape(charstrings[index],index-1)
   end
   if justpass and next(seacs) then
    local charset=data.dictionaries[1].charset
    if charset then
     local lookup=table.swapped(charset)
     for index,v in next,seacs do
      local bindex=lookup[standardnames[v.base]]
      local aindex=lookup[standardnames[v.accent]]
      local bglyph=bindex and glyphs[bindex]
      local aglyph=aindex and glyphs[aindex]
      if bglyph and aglyph then
       local jp=justpass
       justpass=false
       local x,y=processshape(charstrings[bindex+1],bindex,true)
       justpass=jp
       local base=bglyph.stream
       local accent=aglyph.stream
       local moveto=encode[-x-v.asb+v.adx]..chars[22]..encode[-y+v.ady]..chars[ 4]
       base=sub(base,1,#base-1)
       glyphs[index].stream=base..moveto..accent
      end
     end
    end
   end
   stopparsing(fontdata,data)
  else
   report("no charstrings")
  end
  return glyphs
 end
 parsecharstring=function(fontdata,data,dictionary,tab,glphs,index,doshapes,tversion,streams)
  keepcurve=doshapes
  version=tversion
  strings=data.strings
  globals=data.routines or {}
  locals=dictionary.subroutines or {}
  charset=false
  vsindex=dictionary.vsindex or 0
  glyphs=glphs or {}
  justpass=streams==true
  seacs={}
  globalbias,localbias=setbias(globals,locals,nobias)
  nominalwidth,defaultwidth=setwidths(dictionary.private)
  processshape(tab,index-1)
 end
end
local function readglobals(f,data)
 local routines=readlengths(f)
 for i=1,#routines do
  routines[i]=readbytetable(f,routines[i])
 end
 data.routines=routines
end
local function readencodings(f,data)
 data.encodings={}
end
local function readcharsets(f,data,dictionary)
 local header=data.header
 local strings=data.strings
 local nofglyphs=data.nofglyphs
 local charsetoffset=dictionary.charset
 if charsetoffset and charsetoffset~=0 then
  setposition(f,header.offset+charsetoffset)
  local format=readbyte(f)
  local charset={ [0]=".notdef" }
  dictionary.charset=charset
  if format==0 then
   for i=1,nofglyphs do
    charset[i]=strings[readushort(f)]
   end
  elseif format==1 or format==2 then
   local readcount=format==1 and readbyte or readushort
   local i=1
   while i<=nofglyphs do
    local sid=readushort(f)
    local n=readcount(f)
    for s=sid,sid+n do
     charset[i]=strings[s]
     i=i+1
     if i>nofglyphs then
      break
     end
    end
   end
  else
   report("cff parser: unsupported charset format %a",format)
  end
 else
  dictionary.nocharset=true
  dictionary.charset=nil
 end
end
local function readprivates(f,data)
 local header=data.header
 local dictionaries=data.dictionaries
 local private=dictionaries[1].private
 if private then
  setposition(f,header.offset+private.offset)
  private.data=readstring(f,private.size)
 end
end
local function readlocals(f,data,dictionary)
 local header=data.header
 local private=dictionary.private
 if private then
  local subroutineoffset=private.data.subroutines
  if subroutineoffset~=0 then
   setposition(f,header.offset+private.offset+subroutineoffset)
   local subroutines=readlengths(f)
   for i=1,#subroutines do
    subroutines[i]=readbytetable(f,subroutines[i])
   end
   dictionary.subroutines=subroutines
   private.data.subroutines=nil
  else
   dictionary.subroutines={}
  end
 else
  dictionary.subroutines={}
 end
end
local function readcharstrings(f,data,what)
 local header=data.header
 local dictionaries=data.dictionaries
 local dictionary=dictionaries[1]
 local stringtype=dictionary.charstringtype
 local offset=dictionary.charstrings
 if type(offset)~="number" then
 elseif stringtype==2 then
  setposition(f,header.offset+offset)
  local charstrings=readlengths(f,what=="cff2")
  local nofglyphs=#charstrings
  for i=1,nofglyphs do
   charstrings[i]=readstring(f,charstrings[i])
  end
  data.nofglyphs=nofglyphs
  dictionary.charstrings=charstrings
 else
  report("unsupported charstr type %i",stringtype)
  data.nofglyphs=0
  dictionary.charstrings={}
 end
end
local function readcidprivates(f,data)
 local header=data.header
 local dictionaries=data.dictionaries[1].cid.dictionaries
 for i=1,#dictionaries do
  local dictionary=dictionaries[i]
  local private=dictionary.private
  if private then
   setposition(f,header.offset+private.offset)
   private.data=readstring(f,private.size)
  end
 end
 parseprivates(data,dictionaries)
end
readers.parsecharstrings=parsecharstrings 
local function readnoselect(f,fontdata,data,glyphs,doshapes,version,streams)
 local dictionaries=data.dictionaries
 local dictionary=dictionaries[1]
 readglobals(f,data)
 readcharstrings(f,data,version)
 if version=="cff2" then
  dictionary.charset=nil
 else
  readencodings(f,data)
  readcharsets(f,data,dictionary)
 end
 readprivates(f,data)
 parseprivates(data,data.dictionaries)
 readlocals(f,data,dictionary)
 startparsing(fontdata,data,streams)
 parsecharstrings(fontdata,data,glyphs,doshapes,version,streams)
 stopparsing(fontdata,data)
end
local function readfdselect(f,fontdata,data,glyphs,doshapes,version,streams)
 local header=data.header
 local dictionaries=data.dictionaries
 local dictionary=dictionaries[1]
 local cid=dictionary.cid
 local cidselect=cid and cid.fdselect
 readglobals(f,data)
 readcharstrings(f,data,version)
 if version~="cff2" then
  readencodings(f,data)
 end
 local charstrings=dictionary.charstrings
 local fdindex={}
 local nofglyphs=data.nofglyphs
 local maxindex=-1
 setposition(f,header.offset+cidselect)
 local format=readbyte(f)
 if format==1 then
  for i=0,nofglyphs do 
   local index=readbyte(f)
   fdindex[i]=index
   if index>maxindex then
    maxindex=index
   end
  end
 elseif format==3 then
  local nofranges=readushort(f)
  local first=readushort(f)
  local index=readbyte(f)
  while true do
   local last=readushort(f)
   if index>maxindex then
    maxindex=index
   end
   for i=first,last do
    fdindex[i]=index
   end
   if last>=nofglyphs then
    break
   else
    first=last+1
    index=readbyte(f)
   end
  end
 else
 end
 if maxindex>=0 then
  local cidarray=cid.fdarray
  if cidarray then
   setposition(f,header.offset+cidarray)
   local dictionaries=readlengths(f)
   for i=1,#dictionaries do
    dictionaries[i]=readstring(f,dictionaries[i])
   end
   parsedictionaries(data,dictionaries)
   cid.dictionaries=dictionaries
   readcidprivates(f,data)
   for i=1,#dictionaries do
    readlocals(f,data,dictionaries[i])
   end
   startparsing(fontdata,data,streams)
   for i=1,#charstrings do
    parsecharstring(fontdata,data,dictionaries[fdindex[i]+1],charstrings[i],glyphs,i,doshapes,version,streams)
   end
   stopparsing(fontdata,data)
  else
   report("no cid array")
  end
 end
end
local gotodatatable=readers.helpers.gotodatatable
local function cleanup(data,dictionaries)
end
function readers.cff(f,fontdata,specification)
 local tableoffset=gotodatatable(f,fontdata,"cff",specification.details or specification.glyphs)
 if tableoffset then
  local header=readheader(f)
  if header.major~=1 then
   report("only version %s is supported for table %a",1,"cff")
   return
  end
  local glyphs=fontdata.glyphs
  local names=readfontnames(f)
  local dictionaries=readtopdictionaries(f)
  local strings=readstrings(f)
  local data={
   header=header,
   names=names,
   dictionaries=dictionaries,
   strings=strings,
   nofglyphs=fontdata.nofglyphs,
  }
  parsedictionaries(data,dictionaries,"cff")
  local dic=dictionaries[1]
  local cid=dic.cid
  local cffinfo={
   familyname=dic.familyname,
   fullname=dic.fullname,
   boundingbox=dic.boundingbox,
   weight=dic.weight,
   italicangle=dic.italicangle,
   underlineposition=dic.underlineposition,
   underlinethickness=dic.underlinethickness,
   defaultwidth=dic.defaultwidthx,
   nominalwidth=dic.nominalwidthx,
   monospaced=dic.monospaced,
  }
  fontdata.cidinfo=cid and {
   registry=cid.registry,
   ordering=cid.ordering,
   supplement=cid.supplement,
  }
  fontdata.cffinfo=cffinfo
  local all=specification.shapes or specification.streams or false
  if specification.glyphs or all then
   if cid and cid.fdselect then
    readfdselect(f,fontdata,data,glyphs,all,"cff",specification.streams)
   else
    readnoselect(f,fontdata,data,glyphs,all,"cff",specification.streams)
   end
  end
  local private=dic.private
  if private then
   local data=private.data
   if type(data)=="table" then
    cffinfo.defaultwidth=data.defaultwidthx or cffinfo.defaultwidth
    cffinfo.nominalwidth=data.nominalwidthx or cffinfo.nominalwidth
    cffinfo.bluevalues=data.bluevalues
    cffinfo.otherblues=data.otherblues
    cffinfo.familyblues=data.familyblues
    cffinfo.familyotherblues=data.familyotherblues
    cffinfo.bluescale=data.bluescale
    cffinfo.blueshift=data.blueshift
    cffinfo.bluefuzz=data.bluefuzz
    cffinfo.stdhw=data.stdhw
    cffinfo.stdvw=data.stdvw
   end
  end
  cleanup(data,dictionaries)
 end
end
function readers.cff2(f,fontdata,specification)
 local tableoffset=gotodatatable(f,fontdata,"cff2",specification.glyphs)
 if tableoffset then
  local header=readheader(f)
  if header.major~=2 then
   report("only version %s is supported for table %a",2,"cff2")
   return
  end
  local glyphs=fontdata.glyphs
  local dictionaries={ readstring(f,header.dsize) }
  local data={
   header=header,
   dictionaries=dictionaries,
   nofglyphs=fontdata.nofglyphs,
  }
  parsedictionaries(data,dictionaries,"cff2")
  local offset=dictionaries[1].vstore
  if offset>0 then
   local storeoffset=dictionaries[1].vstore+data.header.offset+2 
   local regions,deltas=readers.helpers.readvariationdata(f,storeoffset,factors)
   data.regions=regions
   data.deltas=deltas
  else
   data.regions={}
   data.deltas={}
  end
  data.factors=specification.factors
  local cid=data.dictionaries[1].cid
  local all=specification.shapes or specification.streams or false
  if cid and cid.fdselect then
   readfdselect(f,fontdata,data,glyphs,all,"cff2",specification.streams)
  else
   readnoselect(f,fontdata,data,glyphs,all,"cff2",specification.streams)
  end
  cleanup(data,dictionaries)
 end
end
function readers.cffcheck(filename)
 local f=io.open(filename,"rb")
 if f then
  local fontdata={
   glyphs={},
  }
  local header=readheader(f)
  if header.major~=1 then
   report("only version %s is supported for table %a",1,"cff")
   return
  end
  local names=readfontnames(f)
  local dictionaries=readtopdictionaries(f)
  local strings=readstrings(f)
  local glyphs={}
  local data={
   header=header,
   names=names,
   dictionaries=dictionaries,
   strings=strings,
   glyphs=glyphs,
   nofglyphs=0,
  }
  parsedictionaries(data,dictionaries,"cff")
  local cid=data.dictionaries[1].cid
  if cid and cid.fdselect then
   readfdselect(f,fontdata,data,glyphs,false)
  else
   readnoselect(f,fontdata,data,glyphs,false)
  end
  return data
 end
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['font-ttf']={
 version=1.001,
 comment="companion to font-ini.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
local next,type,unpack=next,type,unpack
local band,rshift=bit32.band,bit32.rshift
local sqrt,round=math.sqrt,math.round
local char,rep=string.char,string.rep
local concat=table.concat
local idiv=number.idiv
local setmetatableindex=table.setmetatableindex
local report=logs.reporter("otf reader","ttf")
local trace_deltas=false
local readers=fonts.handlers.otf.readers
local streamreader=readers.streamreader
local setposition=streamreader.setposition
local getposition=streamreader.getposition
local skipbytes=streamreader.skip
local readbyte=streamreader.readcardinal1  
local readushort=streamreader.readcardinal2  
local readulong=streamreader.readcardinal4  
local readchar=streamreader.readinteger1   
local readshort=streamreader.readinteger2   
local read2dot14=streamreader.read2dot14  
local readinteger=streamreader.readinteger1
local readcardinaltable=streamreader.readcardinaltable
local readintegertable=streamreader.readintegertable
directives.register("fonts.streamreader",function()
 streamreader=utilities.streams
 setposition=streamreader.setposition
 getposition=streamreader.getposition
 skipbytes=streamreader.skip
 readbyte=streamreader.readcardinal1
 readushort=streamreader.readcardinal2
 readulong=streamreader.readcardinal4
 readchar=streamreader.readinteger1
 readshort=streamreader.readinteger2
 read2dot14=streamreader.read2dot14
 readinteger=streamreader.readinteger1
 readcardinaltable=streamreader.readcardinaltable
 readintegertable=streamreader.readintegertable
end)
local short=2
local ushort=2
local ulong=4
local helpers=readers.helpers
local gotodatatable=helpers.gotodatatable
local function mergecomposites(glyphs,shapes)
 local function merge(index,shape,components)
  local contours={}
  local points={}
  local nofcontours=0
  local nofpoints=0
  local offset=0
  local deltas=shape.deltas
  for i=1,#components do
   local component=components[i]
   local subindex=component.index
   local subshape=shapes[subindex]
   local subcontours=subshape.contours
   local subpoints=subshape.points
   if not subcontours then
    local subcomponents=subshape.components
    if subcomponents then
     subcontours,subpoints=merge(subindex,subshape,subcomponents)
    end
   end
   if subpoints then
    local matrix=component.matrix
    local xscale=matrix[1]
    local xrotate=matrix[2]
    local yrotate=matrix[3]
    local yscale=matrix[4]
    local xoffset=matrix[5]
    local yoffset=matrix[6]
    local count=#subpoints
    if xscale==1 and yscale==1 and xrotate==0 and yrotate==0 then
     for i=1,count do
      local p=subpoints[i]
      nofpoints=nofpoints+1
      points[nofpoints]={
       p[1]+xoffset,
       p[2]+yoffset,
       p[3]
      }
     end
    else
     for i=1,count do
      local p=subpoints[i]
      local x=p[1]
      local y=p[2]
      nofpoints=nofpoints+1
      points[nofpoints]={
       xscale*x+xrotate*y+xoffset,
       yscale*y+yrotate*x+yoffset,
       p[3]
      }
     end
    end
    local subcount=#subcontours
    if subcount==1 then
     nofcontours=nofcontours+1
     contours[nofcontours]=offset+subcontours[1]
    else
     for i=1,#subcontours do
      nofcontours=nofcontours+1
      contours[nofcontours]=offset+subcontours[i]
     end
    end
    offset=offset+count
   else
    report("missing contours composite %s, component %s of %s, glyph %s",index,i,#components,subindex)
   end
  end
  shape.points=points 
  shape.contours=contours
  shape.components=nil
  return contours,points
 end
 for index=0,#glyphs-1 do
  local shape=shapes[index]
  if shape then
   local components=shape.components
   if components then
    merge(index,shape,components)
   end
  end
 end
end
local function readnothing(f)
 return {
  type="nothing",
 }
end
local function curveto(m_x,m_y,l_x,l_y,r_x,r_y) 
 return
  l_x+2/3*(m_x-l_x),l_y+2/3*(m_y-l_y),
  r_x+2/3*(m_x-r_x),r_y+2/3*(m_y-r_y),
  r_x,r_y,"c"
end
local function applyaxis(glyph,shape,deltas,dowidth)
 local points=shape.points
 if points then
  local nofpoints=#points
  local h=nofpoints+2 
  local l=nofpoints+1
  local dw=0
  local dl=0
  for i=1,#deltas do
   local deltaset=deltas[i]
   local xvalues=deltaset.xvalues
   local yvalues=deltaset.yvalues
   local dpoints=deltaset.points
   local factor=deltaset.factor
   if dpoints then
    local nofdpoints=#dpoints
    for i=1,nofdpoints do
     local d=dpoints[i]
     local p=points[d]
     if p then
      if xvalues then
       local x=xvalues[i]
       if x and x~=0 then
        p[1]=p[1]+factor*x
       end
      end
      if yvalues then
       local y=yvalues[i]
       if y and y~=0 then
        p[2]=p[2]+factor*y
       end
      end
     elseif dowidth then
      if d==h then
       local x=xvalues[i]
       if x then
        dw=dw+factor*x
       end
      elseif d==l then
       local x=xvalues[i]
       if x then
        dl=dl+factor*x
       end
      end
     end
    end
   else
    for i=1,nofpoints do
     local p=points[i]
     if xvalues then
      local x=xvalues[i]
      if x and x~=0 then
       p[1]=p[1]+factor*x
      end
     end
     if yvalues then
      local y=yvalues[i]
      if y and y~=0 then
       p[2]=p[2]+factor*y
      end
     end
    end
    if dowidth then
     local x=xvalues[h]
     if x then
      dw=dw+factor*x
     end
     local x=xvalues[l]
     if x then
      dl=dl+factor*x
     end
    end
   end
  end
  if dowidth then
   local width=glyph.width or 0
   glyph.width=width+dw-dl
  end
 else
  report("no points for glyph %a",glyph.name)
 end
end
local quadratic=false
local function contours2outlines_normal(glyphs,shapes)
 for index=0,#glyphs-1 do
  local shape=shapes[index]
  if shape then
   local glyph=glyphs[index]
   local contours=shape.contours
   local points=shape.points
   if contours then
    local nofcontours=#contours
    local segments={}
    local nofsegments=0
    glyph.segments=segments
    if nofcontours>0 then
     local px=0
     local py=0
     local first=1
     for i=1,nofcontours do
      local last=contours[i]
      if last>=first then
       local first_pt=points[first]
       local first_on=first_pt[3]
       if first==last then
        first_pt[3]="m" 
        nofsegments=nofsegments+1
        segments[nofsegments]=first_pt
       else 
        local first_on=first_pt[3]
        local last_pt=points[last]
        local last_on=last_pt[3]
        local start=1
        local control_pt=false
        if first_on then
         start=2
        else
         if last_on then
          first_pt=last_pt
         else
          first_pt={ (first_pt[1]+last_pt[1])/2,(first_pt[2]+last_pt[2])/2,false }
         end
         control_pt=first_pt
        end
        local x=first_pt[1]
        local y=first_pt[2]
        if not done then
         xmin=x
         ymin=y
         xmax=x
         ymax=y
         done=true
        end
        nofsegments=nofsegments+1
        segments[nofsegments]={ x,y,"m" } 
        if not quadratic then
         px=x
         py=y
        end
        local previous_pt=first_pt
        for i=first,last do
         local current_pt=points[i]
         local current_on=current_pt[3]
         local previous_on=previous_pt[3]
         if previous_on then
          if current_on then
           local x,y=current_pt[1],current_pt[2]
           nofsegments=nofsegments+1
           segments[nofsegments]={ x,y,"l" } 
           if not quadratic then
            px,py=x,y
           end
          else
           control_pt=current_pt
          end
         elseif current_on then
          local x1=control_pt[1]
          local y1=control_pt[2]
          local x2=current_pt[1]
          local y2=current_pt[2]
          nofsegments=nofsegments+1
          if quadratic then
           segments[nofsegments]={ x1,y1,x2,y2,"q" } 
          else
           x1,y1,x2,y2,px,py=curveto(x1,y1,px,py,x2,y2)
           segments[nofsegments]={ x1,y1,x2,y2,px,py,"c" } 
          end
          control_pt=false
         else
          local x2=(previous_pt[1]+current_pt[1])/2
          local y2=(previous_pt[2]+current_pt[2])/2
          local x1=control_pt[1]
          local y1=control_pt[2]
          nofsegments=nofsegments+1
          if quadratic then
           segments[nofsegments]={ x1,y1,x2,y2,"q" } 
          else
           x1,y1,x2,y2,px,py=curveto(x1,y1,px,py,x2,y2)
           segments[nofsegments]={ x1,y1,x2,y2,px,py,"c" } 
          end
          control_pt=current_pt
         end
         previous_pt=current_pt
        end
        if first_pt==last_pt then
        else
         nofsegments=nofsegments+1
         local x2=first_pt[1]
         local y2=first_pt[2]
         if not control_pt then
          segments[nofsegments]={ x2,y2,"l" } 
         elseif quadratic then
          local x1=control_pt[1]
          local y1=control_pt[2]
          segments[nofsegments]={ x1,y1,x2,y2,"q" } 
         else
          local x1=control_pt[1]
          local y1=control_pt[2]
          x1,y1,x2,y2,px,py=curveto(x1,y1,px,py,x2,y2)
          segments[nofsegments]={ x1,y1,x2,y2,px,py,"c" }
         end
        end
       end
      end
      first=last+1
     end
    end
   end
  end
 end
end
local function contours2outlines_shaped(glyphs,shapes,keepcurve)
 for index=0,#glyphs-1 do
  local shape=shapes[index]
  if shape then
   local glyph=glyphs[index]
   local contours=shape.contours
   local points=shape.points
   if contours then
    local nofcontours=#contours
    local segments=keepcurve and {} or nil
    local nofsegments=0
    if keepcurve then
     glyph.segments=segments
    end
    if nofcontours>0 then
     local xmin,ymin,xmax,ymax,done=0,0,0,0,false
     local px,py=0,0 
     local first=1
     for i=1,nofcontours do
      local last=contours[i]
      if last>=first then
       local first_pt=points[first]
       local first_on=first_pt[3]
       if first==last then
        if keepcurve then
         first_pt[3]="m" 
         nofsegments=nofsegments+1
         segments[nofsegments]=first_pt
        end
       else 
        local first_on=first_pt[3]
        local last_pt=points[last]
        local last_on=last_pt[3]
        local start=1
        local control_pt=false
        if first_on then
         start=2
        else
         if last_on then
          first_pt=last_pt
         else
          first_pt={ (first_pt[1]+last_pt[1])/2,(first_pt[2]+last_pt[2])/2,false }
         end
         control_pt=first_pt
        end
        local x=first_pt[1]
        local y=first_pt[2]
        if not done then
         xmin,ymin,xmax,ymax=x,y,x,y
         done=true
        else
         if x<xmin then xmin=x elseif x>xmax then xmax=x end
         if y<ymin then ymin=y elseif y>ymax then ymax=y end
        end
        if keepcurve then
         nofsegments=nofsegments+1
         segments[nofsegments]={ x,y,"m" } 
        end
        if not quadratic then
         px=x
         py=y
        end
        local previous_pt=first_pt
        for i=first,last do
         local current_pt=points[i]
         local current_on=current_pt[3]
         local previous_on=previous_pt[3]
         if previous_on then
          if current_on then
           local x=current_pt[1]
           local y=current_pt[2]
           if x<xmin then xmin=x elseif x>xmax then xmax=x end
           if y<ymin then ymin=y elseif y>ymax then ymax=y end
           if keepcurve then
            nofsegments=nofsegments+1
            segments[nofsegments]={ x,y,"l" } 
           end
           if not quadratic then
            px=x
            py=y
           end
          else
           control_pt=current_pt
          end
         elseif current_on then
          local x1=control_pt[1]
          local y1=control_pt[2]
          local x2=current_pt[1]
          local y2=current_pt[2]
          if quadratic then
           if x1<xmin then xmin=x1 elseif x1>xmax then xmax=x1 end
           if y1<ymin then ymin=y1 elseif y1>ymax then ymax=y1 end
           if keepcurve then
            nofsegments=nofsegments+1
            segments[nofsegments]={ x1,y1,x2,y2,"q" } 
           end
          else
           x1,y1,x2,y2,px,py=curveto(x1,y1,px,py,x2,y2)
           if x1<xmin then xmin=x1 elseif x1>xmax then xmax=x1 end
           if y1<ymin then ymin=y1 elseif y1>ymax then ymax=y1 end
           if x2<xmin then xmin=x2 elseif x2>xmax then xmax=x2 end
           if y2<ymin then ymin=y2 elseif y2>ymax then ymax=y2 end
           if px<xmin then xmin=px elseif px>xmax then xmax=px end
           if py<ymin then ymin=py elseif py>ymax then ymax=py end
           if keepcurve then
            nofsegments=nofsegments+1
            segments[nofsegments]={ x1,y1,x2,y2,px,py,"c" } 
           end
          end
          control_pt=false
         else
          local x2=(previous_pt[1]+current_pt[1])/2
          local y2=(previous_pt[2]+current_pt[2])/2
          local x1=control_pt[1]
          local y1=control_pt[2]
          if quadratic then
           if x1<xmin then xmin=x1 elseif x1>xmax then xmax=x1 end
           if y1<ymin then ymin=y1 elseif y1>ymax then ymax=y1 end
           if keepcurve then
            nofsegments=nofsegments+1
            segments[nofsegments]={ x1,y1,x2,y2,"q" } 
           end
          else
           x1,y1,x2,y2,px,py=curveto(x1,y1,px,py,x2,y2)
           if x1<xmin then xmin=x1 elseif x1>xmax then xmax=x1 end
           if y1<ymin then ymin=y1 elseif y1>ymax then ymax=y1 end
           if x2<xmin then xmin=x2 elseif x2>xmax then xmax=x2 end
           if y2<ymin then ymin=y2 elseif y2>ymax then ymax=y2 end
           if px<xmin then xmin=px elseif px>xmax then xmax=px end
           if py<ymin then ymin=py elseif py>ymax then ymax=py end
           if keepcurve then
            nofsegments=nofsegments+1
            segments[nofsegments]={ x1,y1,x2,y2,px,py,"c" } 
           end
          end
          control_pt=current_pt
         end
         previous_pt=current_pt
        end
        if first_pt==last_pt then
        elseif not control_pt then
         if keepcurve then
          nofsegments=nofsegments+1
          segments[nofsegments]={ first_pt[1],first_pt[2],"l" } 
         end
        else
         local x1=control_pt[1]
         local y1=control_pt[2]
         local x2=first_pt[1]
         local y2=first_pt[2]
         if x1<xmin then xmin=x1 elseif x1>xmax then xmax=x1 end
         if y1<ymin then ymin=y1 elseif y1>ymax then ymax=y1 end
         if quadratic then
          if keepcurve then
           nofsegments=nofsegments+1
           segments[nofsegments]={ x1,y1,x2,y2,"q" } 
          end
         else
          x1,y1,x2,y2,px,py=curveto(x1,y1,px,py,x2,y2)
          if x2<xmin then xmin=x2 elseif x2>xmax then xmax=x2 end
          if y2<ymin then ymin=y2 elseif y2>ymax then ymax=y2 end
          if px<xmin then xmin=px elseif px>xmax then xmax=px end
          if py<ymin then ymin=py elseif py>ymax then ymax=py end
          if keepcurve then
           nofsegments=nofsegments+1
           segments[nofsegments]={ x1,y1,x2,y2,px,py,"c" } 
          end
         end
        end
       end
      end
      first=last+1
     end
     glyph.boundingbox={ round(xmin),round(ymin),round(xmax),round(ymax) }
    end
   end
  end
 end
end
local c_zero=char(0)
local s_zero=char(0,0)
local function toushort(n)
 return char(band(rshift(n,8),0xFF),band(n,0xFF))
end
local function toshort(n)
 if n<0 then
  n=n+0x10000
 end
 return char(band(rshift(n,8),0xFF),band(n,0xFF))
end
local chars=setmetatableindex(function(t,k)
 for i=0,255 do local v=char(i) t[i]=v end return t[k]
end)
local function repackpoints(glyphs,shapes)
 local noboundingbox={ 0,0,0,0 }
 local result={} 
 local xpoints={} 
 local ypoints={} 
 for index=0,#glyphs-1 do
  local shape=shapes[index]
  if shape then
   local r=0
   local glyph=glyphs[index]
   local contours=shape.contours
   local nofcontours=contours and #contours or 0
   local boundingbox=glyph.boundingbox or noboundingbox
   r=r+1 result[r]=toshort(nofcontours)
   r=r+1 result[r]=toshort(boundingbox[1]) 
   r=r+1 result[r]=toshort(boundingbox[2]) 
   r=r+1 result[r]=toshort(boundingbox[3]) 
   r=r+1 result[r]=toshort(boundingbox[4]) 
   if nofcontours>0 then
    for i=1,nofcontours do
     r=r+1 result[r]=toshort(contours[i]-1)
    end
    r=r+1 result[r]=s_zero 
    local points=shape.points
    local currentx=0
    local currenty=0
    local x=0
    local y=0
    local lastflag=nil
    local nofflags=0
    for i=1,#points do
     local pt=points[i]
     local px=pt[1]
     local py=pt[2]
     local fl=pt[3] and 0x01 or 0x00
     if px==currentx then
      fl=fl+0x10
     else
      local dx=round(px-currentx)
      x=x+1
      if dx<-255 or dx>255 then
       xpoints[x]=toshort(dx)
      elseif dx<0 then
       fl=fl+0x02
       xpoints[x]=chars[-dx]
      elseif dx>0 then
       fl=fl+0x12
       xpoints[x]=chars[dx]
      else
       fl=fl+0x02
       xpoints[x]=c_zero
      end
     end
     if py==currenty then
      fl=fl+0x20
     else
      local dy=round(py-currenty)
      y=y+1
      if dy<-255 or dy>255 then
       ypoints[y]=toshort(dy)
      elseif dy<0 then
       fl=fl+0x04
       ypoints[y]=chars[-dy]
      elseif dy>0 then
       fl=fl+0x24
       ypoints[y]=chars[dy]
      else
       fl=fl+0x04
       ypoints[y]=c_zero
      end
     end
     currentx=px
     currenty=py
     if lastflag==fl then
      if nofflags==255 then
       lastflag=lastflag+0x08
       r=r+1 result[r]=char(lastflag,nofflags-1)
       nofflags=1
       lastflag=fl
      else
       nofflags=nofflags+1
      end
     else 
      if nofflags==1 then
       r=r+1 result[r]=chars[lastflag]
      elseif nofflags==2 then
       r=r+1 result[r]=char(lastflag,lastflag)
      elseif nofflags>2 then
       lastflag=lastflag+0x08
       r=r+1 result[r]=char(lastflag,nofflags-1)
      end
      nofflags=1
      lastflag=fl
     end
    end
    if nofflags==1 then
     r=r+1 result[r]=chars[lastflag]
    elseif nofflags==2 then
     r=r+1 result[r]=char(lastflag,lastflag)
    elseif nofflags>2 then
     lastflag=lastflag+0x08
     r=r+1 result[r]=char(lastflag,nofflags-1)
    end
    r=r+1 result[r]=concat(xpoints,"",1,x)
    r=r+1 result[r]=concat(ypoints,"",1,y)
   end
   local stream=concat(result,"",1,r)
   local length=#stream
   local padding=idiv(length+3,4)*4-length
   if padding>0 then
    if padding==1 then
     padding="\0"
    elseif padding==2 then
     padding="\0\0"
    else
     padding="\0\0\0"
    end
    padding=stream..padding
   end
   glyph.stream=stream
  end
 end
end
local flags={}
local function readglyph(f,nofcontours) 
 local points={}
 local contours={} 
 for i=1,nofcontours do
  contours[i]=readshort(f)+1
 end
 local nofpoints=contours[nofcontours]
 local nofinstructions=readushort(f)
 skipbytes(f,nofinstructions)
 local i=1
 while i<=nofpoints do
  local flag=readbyte(f)
  flags[i]=flag
  if band(flag,0x08)~=0 then
   local n=readbyte(f)
   if n==1 then
    i=i+1
    flags[i]=flag
   else
    for j=1,n do
     i=i+1
     flags[i]=flag
    end
   end
  end
  i=i+1
 end
 local x=0
 for i=1,nofpoints do
  local flag=flags[i]
  if band(flag,0x02)~=0 then
   if band(flag,0x10)~=0 then
    x=x+readbyte(f)
   else
    x=x-readbyte(f)
   end
  elseif band(flag,0x10)~=0 then
  else
   x=x+readshort(f)
  end
  points[i]={ x,0,band(flag,0x01)~=0 }
 end
 local y=0
 for i=1,nofpoints do
  local flag=flags[i]
  if band(flag,0x04)~=0 then
   if band(flag,0x20)~=0 then
    y=y+readbyte(f)
   else
    y=y-readbyte(f)
   end
  elseif band(flag,0x20)~=0 then
  else
   y=y+readshort(f)
  end
  points[i][2]=y
 end
 return {
  type="glyph",
  points=points,
  contours=contours,
  nofpoints=nofpoints,
 }
end
local function readcomposite(f)
 local components={}
 local nofcomponents=0
 local instructions=false
 while true do
  local flags=readushort(f)
  local index=readushort(f)
  local f_xyarg=band(flags,0x0002)~=0
  local f_offset=band(flags,0x0800)~=0
  local xscale=1
  local xrotate=0
  local yrotate=0
  local yscale=1
  local xoffset=0
  local yoffset=0
  local base=false
  local reference=false
  if f_xyarg then
   if band(flags,0x0001)~=0 then 
    xoffset=readshort(f)
    yoffset=readshort(f)
   else
    xoffset=readchar(f) 
    yoffset=readchar(f) 
   end
  else
   if band(flags,0x0001)~=0 then 
    base=readshort(f)
    reference=readshort(f)
   else
    base=readchar(f) 
    reference=readchar(f) 
   end
  end
  if band(flags,0x0008)~=0 then 
   xscale=read2dot14(f)
   yscale=xscale
   if f_xyarg and f_offset then
    xoffset=xoffset*xscale
    yoffset=yoffset*yscale
   end
  elseif band(flags,0x0040)~=0 then 
   xscale=read2dot14(f)
   yscale=read2dot14(f)
   if f_xyarg and f_offset then
    xoffset=xoffset*xscale
    yoffset=yoffset*yscale
   end
  elseif band(flags,0x0080)~=0 then 
   xscale=read2dot14(f)
   xrotate=read2dot14(f)
   yrotate=read2dot14(f)
   yscale=read2dot14(f)
   if f_xyarg and f_offset then
    xoffset=xoffset*sqrt(xscale^2+xrotate^2)
    yoffset=yoffset*sqrt(yrotate^2+yscale^2)
   end
  end
  nofcomponents=nofcomponents+1
  components[nofcomponents]={
   index=index,
   usemine=band(flags,0x0200)~=0,
   round=band(flags,0x0006)~=0,
   base=base,
   reference=reference,
   matrix={ xscale,xrotate,yrotate,yscale,xoffset,yoffset },
  }
  if band(flags,0x0100)~=0 then
   instructions=true
  end
  if band(flags,0x0020)==0 then 
   break
  end
 end
 return {
  type="composite",
  components=components,
 }
end
function readers.loca(f,fontdata,specification)
 if specification.glyphs then
  local datatable=fontdata.tables.loca
  if datatable then
   local offset=fontdata.tables.glyf.offset
   local format=fontdata.fontheader.indextolocformat
   local profile=fontdata.maximumprofile
   local nofglyphs=profile and profile.nofglyphs
   local locations={}
   setposition(f,datatable.offset)
   if format==1 then
    if not nofglyphs then
     nofglyphs=idiv(datatable.length,4)-1
    end
    for i=0,nofglyphs do
     locations[i]=offset+readulong(f)
    end
    fontdata.nofglyphs=nofglyphs
   else
    if not nofglyphs then
     nofglyphs=idiv(datatable.length,2)-1
    end
    for i=0,nofglyphs do
     locations[i]=offset+readushort(f)*2
    end
   end
   fontdata.nofglyphs=nofglyphs
   fontdata.locations=locations
  end
 end
end
function readers.glyf(f,fontdata,specification) 
 local tableoffset=gotodatatable(f,fontdata,"glyf",specification.glyphs)
 if tableoffset then
  local locations=fontdata.locations
  if locations then
   local glyphs=fontdata.glyphs
   local nofglyphs=fontdata.nofglyphs
   local filesize=fontdata.filesize
   local nothing={ 0,0,0,0 }
   local shapes={}
   local loadshapes=specification.shapes or specification.instance or specification.streams
   for index=0,nofglyphs-1 do
    local location=locations[index]
    local length=locations[index+1]-location
    if location>=filesize then
     report("discarding %s glyphs due to glyph location bug",nofglyphs-index+1)
     fontdata.nofglyphs=index-1
     fontdata.badfont=true
     break
    elseif length>0 then
     setposition(f,location)
     local nofcontours=readshort(f)
     glyphs[index].boundingbox={
      readshort(f),
      readshort(f),
      readshort(f),
      readshort(f),
     }
     if not loadshapes then
     elseif nofcontours==0 then
      shapes[index]=readnothing(f)
     elseif nofcontours>0 then
      shapes[index]=readglyph(f,nofcontours)
     else
      shapes[index]=readcomposite(f,nofcontours)
     end
    else
     if loadshapes then
      shapes[index]=readnothing(f)
     end
     glyphs[index].boundingbox=nothing
    end
   end
   if loadshapes then
    if readers.gvar then
     readers.gvar(f,fontdata,specification,glyphs,shapes)
    end
    mergecomposites(glyphs,shapes)
    if specification.instance then
     if specification.streams then
      repackpoints(glyphs,shapes)
     else
      contours2outlines_shaped(glyphs,shapes,specification.shapes)
     end
    elseif specification.shapes then
     if specification.streams then
      repackpoints(glyphs,shapes)
     else
      contours2outlines_normal(glyphs,shapes)
     end
    elseif specification.streams then
     repackpoints(glyphs,shapes)
    end
   end
  end
 end
end
local function readtuplerecord(f,nofaxis)
 local record={}
 for i=1,nofaxis do
  record[i]=read2dot14(f)
 end
 return record
end
local function readpoints(f)
 local count=readbyte(f)
 if count==0 then
  return nil,0 
 else
  if count<128 then
  elseif band(count,0x80)~=0 then
   count=band(count,0x7F)*256+readbyte(f)
  else
  end
  local points={}
  local p=0
  local n=1 
  while p<count do
   local control=readbyte(f)
   local runreader=band(control,0x80)~=0 and readushort or readbyte
   local runlength=band(control,0x7F)
   for i=1,runlength+1 do
    n=n+runreader(f)
    p=p+1
    points[p]=n
   end
  end
  return points,p
 end
end
local function readdeltas(f,nofpoints)
 local deltas={}
 local p=0
 local z=0
 while nofpoints>0 do
  local control=readbyte(f)
if not control then
 break
end
  local allzero=band(control,0x80)~=0
  local runlength=band(control,0x3F)+1
  if allzero then
   z=z+runlength
  else
   local runreader=band(control,0x40)~=0 and readshort or readinteger
   if z>0 then
    for i=1,z do
     p=p+1
     deltas[p]=0
    end
    z=0
   end
   for i=1,runlength do
    p=p+1
    deltas[p]=runreader(f)
   end
  end
  nofpoints=nofpoints-runlength
 end
 if p>0 then
  return deltas
 else
 end
end
local function readdeltas(f,nofpoints)
 local deltas={}
 local p=0
 while nofpoints>0 do
  local control=readbyte(f)
  if control then
   local allzero=band(control,0x80)~=0
   local runlength=band(control,0x3F)+1
   if allzero then
    for i=1,runlength do
     p=p+1
     deltas[p]=0
    end
   else
    local runreader=band(control,0x40)~=0 and readshort or readinteger
    for i=1,runlength do
     p=p+1
     deltas[p]=runreader(f)
    end
   end
   nofpoints=nofpoints-runlength
  else
   break
  end
 end
 if p>0 then
  return deltas
 else
 end
end
function readers.gvar(f,fontdata,specification,glyphdata,shapedata)
 local instance=specification.instance
 if not instance then
  return
 end
 local factors=specification.factors
 if not factors then
  return
 end
 local tableoffset=gotodatatable(f,fontdata,"gvar",specification.variable or specification.shapes)
 if tableoffset then
  local version=readulong(f) 
  local nofaxis=readushort(f)
  local noftuples=readushort(f)
  local tupleoffset=tableoffset+readulong(f)
  local nofglyphs=readushort(f)
  local flags=readushort(f)
  local dataoffset=tableoffset+readulong(f)
  local data={}
  local tuples={}
  local glyphdata=fontdata.glyphs
  local dowidth=not fontdata.variabledata.hvarwidths
  if band(flags,0x0001)~=0  then
   for i=1,nofglyphs+1 do
    data[i]=dataoffset+readulong(f)
   end
  else
   for i=1,nofglyphs+1 do
    data[i]=dataoffset+2*readushort(f)
   end
  end
  if noftuples>0 then
   setposition(f,tupleoffset)
   for i=1,noftuples do
    tuples[i]=readtuplerecord(f,nofaxis)
   end
  end
  local nextoffset=false
  local startoffset=data[1]
  for i=1,nofglyphs do 
   nextoffset=data[i+1]
   local glyph=glyphdata[i-1]
   local name=trace_deltas and glyph.name
   if startoffset==nextoffset then
    if name then
     report("no deltas for glyph %a",name)
    end
   else
    local shape=shapedata[i-1] 
    if not shape then
     if name then
      report("no shape for glyph %a",name)
     end
    else
     lastoffset=startoffset
     setposition(f,startoffset)
     local flags=readushort(f)
     local count=band(flags,0x0FFF)
     local offset=startoffset+readushort(f) 
     local deltas={}
     local allpoints=(shape.nofpoints or 0) 
     local shared=false
     local nofshared=0
     if band(flags,0x8000)~=0  then
      local current=getposition(f)
      setposition(f,offset)
      shared,nofshared=readpoints(f)
      offset=getposition(f)
      setposition(f,current)
     end
     for j=1,count do
      local size=readushort(f) 
      local flags=readushort(f)
      local index=band(flags,0x0FFF)
      local haspeak=band(flags,0x8000)~=0
      local intermediate=band(flags,0x4000)~=0
      local private=band(flags,0x2000)~=0
      local peak=nil
      local start=nil
      local stop=nil
      local xvalues=nil
      local yvalues=nil
      local points=shared 
      local nofpoints=nofshared
      if haspeak then
       peak=readtuplerecord(f,nofaxis)
      else
       if index+1>#tuples then
        report("error, bad tuple index",index)
       end
       peak=tuples[index+1] 
      end
      if intermediate then
       start=readtuplerecord(f,nofaxis)
       stop=readtuplerecord(f,nofaxis)
      end
      if size>0 then
       local current=getposition(f)
       setposition(f,offset)
       if private then
        points,nofpoints=readpoints(f)
       end 
       if nofpoints==0 then
        nofpoints=allpoints+4
       end
       if nofpoints>0 then
        xvalues=readdeltas(f,nofpoints)
        yvalues=readdeltas(f,nofpoints)
       end
       offset=offset+size
       setposition(f,current)
      end
      if not xvalues and not yvalues then
       points=nil
      end
      local s=1
      for i=1,nofaxis do
       local f=factors[i]
       local peak=peak  and peak [i] or 0
       local start=start and start[i] or (peak<0 and peak or 0)
       local stop=stop  and stop [i] or (peak>0 and peak or 0)
       if start>peak or peak>stop then
       elseif start<0 and stop>0 and peak~=0 then
       elseif peak==0 then
       elseif f<start or f>stop then
        s=0
        break
       elseif f<peak then
        s=s*(f-start)/(peak-start)
       elseif f>peak then
        s=s*(stop-f)/(stop-peak)
       else
       end
      end
      if s==0 then
       if name then
        report("no deltas applied for glyph %a",name)
       end
      else
       deltas[#deltas+1]={
        factor=s,
        points=points,
        xvalues=xvalues,
        yvalues=yvalues,
       }
      end
     end
     if shape.type=="glyph" then
      applyaxis(glyph,shape,deltas,dowidth)
     else
      shape.deltas=deltas
     end
    end
   end
   startoffset=nextoffset
  end
 end
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['font-dsp']={
 version=1.001,
 comment="companion to font-ini.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
local next,type,tonumber=next,type,tonumber
local band=bit32.band
local extract=bit32.extract
local bor=bit32.bor
local lshift=bit32.lshift
local rshift=bit32.rshift
local gsub=string.gsub
local lower=string.lower
local sub=string.sub
local strip=string.strip
local tohash=table.tohash
local concat=table.concat
local copy=table.copy
local reversed=table.reversed
local sort=table.sort
local insert=table.insert
local round=math.round
local settings_to_hash=utilities.parsers.settings_to_hash_colon_too
local setmetatableindex=table.setmetatableindex
local formatters=string.formatters
local sortedkeys=table.sortedkeys
local sortedhash=table.sortedhash
local sequenced=table.sequenced
local report=logs.reporter("otf reader")
local readers=fonts.handlers.otf.readers
local streamreader=readers.streamreader
local setposition=streamreader.setposition
local getposition=streamreader.getposition
local readuinteger=streamreader.readcardinal1
local readushort=streamreader.readcardinal2
local readulong=streamreader.readcardinal4
local readinteger=streamreader.readinteger1
local readshort=streamreader.readinteger2
local readstring=streamreader.readstring
local readtag=streamreader.readtag
local readbytes=streamreader.readbytes
local readfixed=streamreader.readfixed4
local read2dot14=streamreader.read2dot14
local skipshort=streamreader.skipshort
local skipbytes=streamreader.skip
local readbytetable=streamreader.readbytetable
local readbyte=streamreader.readbyte
local readcardinaltable=streamreader.readcardinaltable
local readintegertable=streamreader.readintegertable
local readfword=readshort
local short=2
local ushort=2
local ulong=4
directives.register("fonts.streamreader",function()
 streamreader=utilities.streams
 setposition=streamreader.setposition
 getposition=streamreader.getposition
 readuinteger=streamreader.readcardinal1
 readushort=streamreader.readcardinal2
 readulong=streamreader.readcardinal4
 readinteger=streamreader.readinteger1
 readshort=streamreader.readinteger2
 readstring=streamreader.readstring
 readtag=streamreader.readtag
 readbytes=streamreader.readbytes
 readfixed=streamreader.readfixed4
 read2dot14=streamreader.read2dot14
 skipshort=streamreader.skipshort
 skipbytes=streamreader.skip
 readbytetable=streamreader.readbytetable
 readbyte=streamreader.readbyte
 readcardinaltable=streamreader.readcardinaltable
 readintegertable=streamreader.readintegertable
 readfword=readshort
end)
local gsubhandlers={}
local gposhandlers={}
readers.gsubhandlers=gsubhandlers
readers.gposhandlers=gposhandlers
local helpers=readers.helpers
local gotodatatable=helpers.gotodatatable
local setvariabledata=helpers.setvariabledata
local lookupidoffset=-1 
local classes={
 "base",
 "ligature",
 "mark",
 "component",
}
local gsubtypes={
 "single",
 "multiple",
 "alternate",
 "ligature",
 "context",
 "chainedcontext",
 "extension",
 "reversechainedcontextsingle",
}
local gpostypes={
 "single",
 "pair",
 "cursive",
 "marktobase",
 "marktoligature",
 "marktomark",
 "context",
 "chainedcontext",
 "extension",
}
local chaindirections={
 context=0,
 chainedcontext=1,
 reversechainedcontextsingle=-1,
}
local function setmetrics(data,where,tag,d)
 local w=data[where]
 if w then
  local v=w[tag]
  if v then
   w[tag]=v+d
  end
 end
end
local variabletags={
 hasc=function(data,d) setmetrics(data,"windowsmetrics","typoascender",d) end,
 hdsc=function(data,d) setmetrics(data,"windowsmetrics","typodescender",d) end,
 hlgp=function(data,d) setmetrics(data,"windowsmetrics","typolinegap",d) end,
 hcla=function(data,d) setmetrics(data,"windowsmetrics","winascent",d) end,
 hcld=function(data,d) setmetrics(data,"windowsmetrics","windescent",d) end,
 vasc=function(data,d) setmetrics(data,"vhea not done","ascent",d) end,
 vdsc=function(data,d) setmetrics(data,"vhea not done","descent",d) end,
 vlgp=function(data,d) setmetrics(data,"vhea not done","linegap",d) end,
 xhgt=function(data,d) setmetrics(data,"windowsmetrics","xheight",d) end,
 cpht=function(data,d) setmetrics(data,"windowsmetrics","capheight",d) end,
 sbxs=function(data,d) setmetrics(data,"windowsmetrics","subscriptxsize",d) end,
 sbys=function(data,d) setmetrics(data,"windowsmetrics","subscriptysize",d) end,
 sbxo=function(data,d) setmetrics(data,"windowsmetrics","subscriptxoffset",d) end,
 sbyo=function(data,d) setmetrics(data,"windowsmetrics","subscriptyoffset",d) end,
 spxs=function(data,d) setmetrics(data,"windowsmetrics","superscriptxsize",d) end,
 spys=function(data,d) setmetrics(data,"windowsmetrics","superscriptysize",d) end,
 spxo=function(data,d) setmetrics(data,"windowsmetrics","superscriptxoffset",d) end,
 spyo=function(data,d) setmetrics(data,"windowsmetrics","superscriptyoffset",d) end,
 strs=function(data,d) setmetrics(data,"windowsmetrics","strikeoutsize",d) end,
 stro=function(data,d) setmetrics(data,"windowsmetrics","strikeoutpos",d) end,
 unds=function(data,d) setmetrics(data,"postscript","underlineposition",d) end,
 undo=function(data,d) setmetrics(data,"postscript","underlinethickness",d) end,
}
local read_cardinal={
 streamreader.readcardinal1,
 streamreader.readcardinal2,
 streamreader.readcardinal3,
 streamreader.readcardinal4,
}
local read_integer={
 streamreader.readinteger1,
 streamreader.readinteger2,
 streamreader.readinteger3,
 streamreader.readinteger4,
}
local lookupnames={
 gsub={
  single="gsub_single",
  multiple="gsub_multiple",
  alternate="gsub_alternate",
  ligature="gsub_ligature",
  context="gsub_context",
  chainedcontext="gsub_contextchain",
  reversechainedcontextsingle="gsub_reversecontextchain",
 },
 gpos={
  single="gpos_single",
  pair="gpos_pair",
  cursive="gpos_cursive",
  marktobase="gpos_mark2base",
  marktoligature="gpos_mark2ligature",
  marktomark="gpos_mark2mark",
  context="gpos_context",
  chainedcontext="gpos_contextchain",
 }
}
local lookupflags=setmetatableindex(function(t,k)
 local v={
  band(k,0x0008)~=0 and true or false,
  band(k,0x0004)~=0 and true or false,
  band(k,0x0002)~=0 and true or false,
  band(k,0x0001)~=0 and true or false,
 }
 t[k]=v
 return v
end)
local function axistofactors(str)
 local t=settings_to_hash(str)
 for k,v in next,t do
  t[k]=tonumber(v) or v 
 end
 return t
end
local hash=table.setmetatableindex(function(t,k)
 local v=sequenced(axistofactors(k),",")
 t[k]=v
 return v
end)
helpers.normalizedaxishash=hash
local cleanname=fonts.names and fonts.names.cleanname or function(name)
 return name and (gsub(lower(name),"[^%a%d]","")) or nil
end
helpers.cleanname=cleanname
function helpers.normalizedaxis(str)
 return hash[str] or str
end
local function getaxisscale(segments,minimum,default,maximum,user)
 if not minimum or not default or not maximum then
  return false
 end
 if user<minimum then
  user=minimum
 elseif user>maximum then
  user=maximum
 end
 if user<default then
  default=- (default-user)/(default-minimum)
 elseif user>default then
  default=(user-default)/(maximum-default)
 else
  default=0
 end
 if not segments then
  return default
 end
 local e
 for i=1,#segments do
  local s=segments[i]
  if type(s)~="number" then
   report("using default axis scale")
   return default
  elseif s[1]>=default then
   if s[2]==default then
    return default
   else
    e=i
    break
   end
  end
 end
 if e then
  local b=segments[e-1]
  local e=segments[e]
  return b[2]+(e[2]-b[2])*(default-b[1])/(e[1]-b[1])
 else
  return false
 end
end
local function getfactors(data,instancespec)
 if instancespec==true then
 elseif type(instancespec)~="string" or instancespec=="" then
  return
 end
 local variabledata=data.variabledata
 if not variabledata then
  return
 end
 local instances=variabledata.instances
 local axis=variabledata.axis
 local segments=variabledata.segments
 if instances and axis then
  local values
  if instancespec==true then
   values={}
   for i=1,#axis do
    values[i]={
     value=axis[i].default,
    }
   end
  else
   for i=1,#instances do
    local instance=instances[i]
    if cleanname(instance.subfamily)==instancespec then
     values=instance.values
     break
    end
   end
  end
  if values then
   local factors={}
   for i=1,#axis do
    local a=axis[i]
    factors[i]=getaxisscale(segments,a.minimum,a.default,a.maximum,values[i].value)
   end
   return factors
  end
  local values=axistofactors(hash[instancespec] or instancespec)
  if values then
   local factors={}
   for i=1,#axis do
    local a=axis[i]
    local d=a.default
    factors[i]=getaxisscale(segments,a.minimum,d,a.maximum,values[a.name or a.tag] or d)
   end
   return factors
  end
 end
end
local function getscales(regions,factors)
 local scales={}
 for i=1,#regions do
  local region=regions[i]
  local s=1
  for j=1,#region do
   local axis=region[j]
   local f=factors[j]
   local start=axis.start
   local peak=axis.peak
   local stop=axis.stop
   if start>peak or peak>stop then
   elseif start<0 and stop>0 and peak~=0 then
   elseif peak==0 then
   elseif f<start or f>stop then
    s=0
    break
   elseif f<peak then
    s=s*(f-start)/(peak-start)
   elseif f>peak then
    s=s*(stop-f)/(stop-peak)
   else
   end
  end
  scales[i]=s
 end
 return scales
end
helpers.getaxisscale=getaxisscale
helpers.getfactors=getfactors
helpers.getscales=getscales
helpers.axistofactors=axistofactors
local function readvariationdata(f,storeoffset,factors) 
 local position=getposition(f)
 setposition(f,storeoffset)
 local format=readushort(f)
 local regionoffset=storeoffset+readulong(f)
 local nofdeltadata=readushort(f)
 local deltadata=readcardinaltable(f,nofdeltadata,ulong)
 setposition(f,regionoffset)
 local nofaxis=readushort(f)
 local nofregions=readushort(f)
 local regions={}
 for i=1,nofregions do 
  local t={}
  for i=1,nofaxis do
   t[i]={ 
    start=read2dot14(f),
    peak=read2dot14(f),
    stop=read2dot14(f),
   }
  end
  regions[i]=t
 end
 if factors then
  for i=1,nofdeltadata do
   setposition(f,storeoffset+deltadata[i])
   local nofdeltasets=readushort(f)
   local nofshorts=readushort(f)
   local nofregions=readushort(f)
   local usedregions={}
   local deltas={}
   for i=1,nofregions do
    usedregions[i]=regions[readushort(f)+1]
   end
   for i=1,nofdeltasets do
    local t=readintegertable(f,nofshorts,short)
    for i=nofshorts+1,nofregions do
     t[i]=readinteger(f)
    end
    deltas[i]=t
   end
   deltadata[i]={
    regions=usedregions,
    deltas=deltas,
    scales=factors and getscales(usedregions,factors) or nil,
   }
  end
 end
 setposition(f,position)
 return regions,deltadata
end
helpers.readvariationdata=readvariationdata
local function readcoverage(f,offset,simple)
 setposition(f,offset)
 local coverageformat=readushort(f)
 if coverageformat==1 then
  local nofcoverage=readushort(f)
  if simple then
   if nofcoverage==1 then
    return { readushort(f) }
   elseif nofcoverage==2 then
    return { readushort(f),readushort(f) }
   else
    return readcardinaltable(f,nofcoverage,ushort)
   end
  elseif nofcoverage==1 then
   return { [readushort(f)]=0 }
  elseif nofcoverage==2 then
   return { [readushort(f)]=0,[readushort(f)]=1 }
  else
   local coverage={}
   for i=0,nofcoverage-1 do
    coverage[readushort(f)]=i 
   end
   return coverage
  end
 elseif coverageformat==2 then
  local nofranges=readushort(f)
  local coverage={}
  local n=simple and 1 or 0 
  for i=1,nofranges do
   local firstindex=readushort(f)
   local lastindex=readushort(f)
   local coverindex=readushort(f)
   if simple then
    for i=firstindex,lastindex do
     coverage[n]=i
     n=n+1
    end
   else
    for i=firstindex,lastindex do
     coverage[i]=n
     n=n+1
    end
   end
  end
  return coverage
 else
  report("unknown coverage format %a ",coverageformat)
  return {}
 end
end
local function readclassdef(f,offset,preset)
 setposition(f,offset)
 local classdefformat=readushort(f)
 local classdef={}
 if type(preset)=="number" then
  for k=0,preset-1 do
   classdef[k]=1
  end
 end
 if classdefformat==1 then
  local index=readushort(f)
  local nofclassdef=readushort(f)
  for i=1,nofclassdef do
   classdef[index]=readushort(f)+1
   index=index+1
  end
 elseif classdefformat==2 then
  local nofranges=readushort(f)
  local n=0
  for i=1,nofranges do
   local firstindex=readushort(f)
   local lastindex=readushort(f)
   local class=readushort(f)+1
   for i=firstindex,lastindex do
    classdef[i]=class
   end
  end
 else
  report("unknown classdef format %a ",classdefformat)
 end
 if type(preset)=="table" then
  for k in next,preset do
   if not classdef[k] then
    classdef[k]=1
   end
  end
 end
 return classdef
end
local function classtocoverage(defs)
 if defs then
  local list={}
  for index,class in next,defs do
   local c=list[class]
   if c then
    c[#c+1]=index
   else
    list[class]={ index }
   end
  end
  return list
 end
end
local skips={ [0]=0,
 1,
 1,
 2,
 1,
 2,
 2,
 3,
 2,
 2,
 3,
 2,
 3,
 3,
 4,
}
local function readvariation(f,offset)
 local p=getposition(f)
 setposition(f,offset)
 local outer=readushort(f)
 local inner=readushort(f)
 local format=readushort(f)
 setposition(f,p)
 if format==0x8000 then
  return outer,inner
 end
end
local function readposition(f,format,mainoffset,getdelta)
 if format==0 then
  return false
 end
 if format==0x04 then
  local h=readshort(f)
  if h==0 then
   return true 
  else
   return { 0,0,h,0 }
  end
 end
 if format==0x05 then
  local x=readshort(f)
  local h=readshort(f)
  if x==0 and h==0 then
   return true 
  else
   return { x,0,h,0 }
  end
 end
 if format==0x44 then
  local h=readshort(f)
  if getdelta then
   local d=readshort(f) 
   if d>0 then
    local outer,inner=readvariation(f,mainoffset+d)
    if outer then
     h=h+getdelta(outer,inner)
    end
   end
  else
   skipshort(f,1)
  end
  if h==0 then
   return true 
  else
   return { 0,0,h,0 }
  end
 end
 local x=band(format,0x1)~=0 and readshort(f) or 0 
 local y=band(format,0x2)~=0 and readshort(f) or 0 
 local h=band(format,0x4)~=0 and readshort(f) or 0 
 local v=band(format,0x8)~=0 and readshort(f) or 0 
 if format>=0x10 then
  local X=band(format,0x10)~=0 and skipshort(f) or 0
  local Y=band(format,0x20)~=0 and skipshort(f) or 0
  local H=band(format,0x40)~=0 and skipshort(f) or 0
  local V=band(format,0x80)~=0 and skipshort(f) or 0
  local s=skips[extract(format,4,4)]
  if s>0 then
   skipshort(f,s)
  end
  if getdelta then
   if X>0 then
    local outer,inner=readvariation(f,mainoffset+X)
    if outer then
     x=x+getdelta(outer,inner)
    end
   end
   if Y>0 then
    local outer,inner=readvariation(f,mainoffset+Y)
    if outer then
     y=y+getdelta(outer,inner)
    end
   end
   if H>0 then
    local outer,inner=readvariation(f,mainoffset+H)
    if outer then
     h=h+getdelta(outer,inner)
    end
   end
   if V>0 then
    local outer,inner=readvariation(f,mainoffset+V)
    if outer then
     v=v+getdelta(outer,inner)
    end
   end
  end
  return { x,y,h,v }
 elseif x==0 and y==0 and h==0 and v==0 then
  return true 
 else
  return { x,y,h,v }
 end
end
local function readanchor(f,offset,getdelta) 
 if not offset or offset==0 then
  return nil 
 end
 setposition(f,offset)
 local format=readshort(f) 
 local x=readshort(f)
 local y=readshort(f)
 if format==3 then
  if getdelta then
   local X=readshort(f)
   local Y=readshort(f)
   if X>0 then
    local outer,inner=readvariation(f,offset+X)
    if outer then
     x=x+getdelta(outer,inner)
    end
   end
   if Y>0 then
    local outer,inner=readvariation(f,offset+Y)
    if outer then
     y=y+getdelta(outer,inner)
    end
   end
  else
   skipshort(f,2)
  end
  return { x,y } 
 else
  return { x,y }
 end
end
local function readfirst(f,offset)
 if offset then
  setposition(f,offset)
 end
 return { readushort(f) }
end
function readarray(f,offset)
 if offset then
  setposition(f,offset)
 end
 local n=readushort(f)
 if n==1 then
  return { readushort(f) },1
 elseif n>0 then
  return readcardinaltable(f,n,ushort),n
 end
end
local function readcoveragearray(f,offset,t,simple)
 if not t then
  return nil
 end
 local n=#t
 if n==0 then
  return nil
 end
 for i=1,n do
  t[i]=readcoverage(f,offset+t[i],simple)
 end
 return t
end
local function covered(subset,all)
 local used,u
 for i=1,#subset do
  local s=subset[i]
  if all[s] then
   if used then
    u=u+1
    used[u]=s
   else
    u=1
    used={ s }
   end
  end
 end
 return used
end
local function readlookuparray(f,noflookups,nofcurrent)
 local lookups={}
 if noflookups>0 then
  local length=0
  for i=1,noflookups do
   local index=readushort(f)+1
   if index>length then
    length=index
   end
   local lookup=readushort(f)+1
   local list=lookups[index]
   if list then
    list[#list+1]=lookup
   else
    lookups[index]={ lookup }
   end
  end
  for index=1,length do
   if not lookups[index] then
    lookups[index]=false
   end
  end
 end
 return lookups
end
local function unchainedcontext(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs,what)
 local tableoffset=lookupoffset+offset
 setposition(f,tableoffset)
 local subtype=readushort(f)
 if subtype==1 then
  local coverage=readushort(f)
  local subclasssets=readarray(f)
  local rules={}
  if subclasssets then
   coverage=readcoverage(f,tableoffset+coverage,true)
   for i=1,#subclasssets do
    local offset=subclasssets[i]
    if offset>0 then
     local firstcoverage=coverage[i]
     local rulesoffset=tableoffset+offset
     local subclassrules=readarray(f,rulesoffset)
     for rule=1,#subclassrules do
      setposition(f,rulesoffset+subclassrules[rule])
      local nofcurrent=readushort(f)
      local noflookups=readushort(f)
      local current={ { firstcoverage } }
      for i=2,nofcurrent do
       current[i]={ readushort(f) }
      end
      local lookups=readlookuparray(f,noflookups,nofcurrent)
      rules[#rules+1]={
       current=current,
       lookups=lookups
      }
     end
    end
   end
  else
   report("empty subclassset in %a subtype %i","unchainedcontext",subtype)
  end
  return {
   format="glyphs",
   rules=rules,
  }
 elseif subtype==2 then
  local coverage=readushort(f)
  local currentclassdef=readushort(f)
  local subclasssets=readarray(f)
  local rules={}
  if subclasssets then
   coverage=readcoverage(f,tableoffset+coverage)
   currentclassdef=readclassdef(f,tableoffset+currentclassdef,coverage)
   local currentclasses=classtocoverage(currentclassdef,fontdata.glyphs)
   for class=1,#subclasssets do
    local offset=subclasssets[class]
    if offset>0 then
     local firstcoverage=currentclasses[class]
     if firstcoverage then
      firstcoverage=covered(firstcoverage,coverage) 
      if firstcoverage then
       local rulesoffset=tableoffset+offset
       local subclassrules=readarray(f,rulesoffset)
       for rule=1,#subclassrules do
        setposition(f,rulesoffset+subclassrules[rule])
        local nofcurrent=readushort(f)
        local noflookups=readushort(f)
        local current={ firstcoverage }
        for i=2,nofcurrent do
         current[i]=currentclasses[readushort(f)+1]
        end
        local lookups=readlookuparray(f,noflookups,nofcurrent)
        rules[#rules+1]={
         current=current,
         lookups=lookups
        }
       end
      else
       report("no coverage")
      end
     else
      report("no coverage class")
     end
    end
   end
  else
   report("empty subclassset in %a subtype %i","unchainedcontext",subtype)
  end
  return {
   format="class",
   rules=rules,
  }
 elseif subtype==3 then
  local nofglyphs=readushort(f)
  local noflookups=readushort(f)
  local current=readcardinaltable(f,nofglyphs,ushort)
  local lookups=readlookuparray(f,noflookups,#current)
  current=readcoveragearray(f,tableoffset,current,true)
  return {
   format="coverage",
   rules={
    {
     current=current,
     lookups=lookups,
    }
   }
  }
 else
  report("unsupported subtype %a in %a %s",subtype,"unchainedcontext",what)
 end
end
local function chainedcontext(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs,what)
 local tableoffset=lookupoffset+offset
 setposition(f,tableoffset)
 local subtype=readushort(f)
 if subtype==1 then
  local coverage=readushort(f)
  local subclasssets=readarray(f)
  local rules={}
  if subclasssets then
   coverage=readcoverage(f,tableoffset+coverage,true)
   for i=1,#subclasssets do
    local offset=subclasssets[i]
    if offset>0 then
     local firstcoverage=coverage[i]
     local rulesoffset=tableoffset+offset
     local subclassrules=readarray(f,rulesoffset)
     for rule=1,#subclassrules do
      setposition(f,rulesoffset+subclassrules[rule])
      local nofbefore=readushort(f)
      local before
      if nofbefore>0 then
       before={}
       for i=1,nofbefore do
        before[i]={ readushort(f) }
       end
      end
      local nofcurrent=readushort(f)
      local current={ { firstcoverage } }
      for i=2,nofcurrent do
       current[i]={ readushort(f) }
      end
      local nofafter=readushort(f)
      local after
      if nofafter>0 then
       after={}
       for i=1,nofafter do
        after[i]={ readushort(f) }
       end
      end
      local noflookups=readushort(f)
      local lookups=readlookuparray(f,noflookups,nofcurrent)
      rules[#rules+1]={
       before=before,
       current=current,
       after=after,
       lookups=lookups,
      }
     end
    end
   end
  else
   report("empty subclassset in %a subtype %i","chainedcontext",subtype)
  end
  return {
   format="glyphs",
   rules=rules,
  }
 elseif subtype==2 then
  local coverage=readushort(f)
  local beforeclassdef=readushort(f)
  local currentclassdef=readushort(f)
  local afterclassdef=readushort(f)
  local subclasssets=readarray(f)
  local rules={}
  if subclasssets then
   local coverage=readcoverage(f,tableoffset+coverage)
   local beforeclassdef=readclassdef(f,tableoffset+beforeclassdef,nofglyphs)
   local currentclassdef=readclassdef(f,tableoffset+currentclassdef,coverage)
   local afterclassdef=readclassdef(f,tableoffset+afterclassdef,nofglyphs)
   local beforeclasses=classtocoverage(beforeclassdef,fontdata.glyphs)
   local currentclasses=classtocoverage(currentclassdef,fontdata.glyphs)
   local afterclasses=classtocoverage(afterclassdef,fontdata.glyphs)
   for class=1,#subclasssets do
    local offset=subclasssets[class]
    if offset>0 then
     local firstcoverage=currentclasses[class]
     if firstcoverage then
      firstcoverage=covered(firstcoverage,coverage) 
      if firstcoverage then
       local rulesoffset=tableoffset+offset
       local subclassrules=readarray(f,rulesoffset)
       for rule=1,#subclassrules do
        setposition(f,rulesoffset+subclassrules[rule])
        local nofbefore=readushort(f)
        local before
        if nofbefore>0 then
         before={}
         for i=1,nofbefore do
          before[i]=beforeclasses[readushort(f)+1]
         end
        end
        local nofcurrent=readushort(f)
        local current={ firstcoverage }
        for i=2,nofcurrent do
         current[i]=currentclasses[readushort(f)+1]
        end
        local nofafter=readushort(f)
        local after
        if nofafter>0 then
         after={}
         for i=1,nofafter do
          after[i]=afterclasses[readushort(f)+1]
         end
        end
        local noflookups=readushort(f)
        local lookups=readlookuparray(f,noflookups,nofcurrent)
        rules[#rules+1]={
         before=before,
         current=current,
         after=after,
         lookups=lookups,
        }
       end
      else
       report("no coverage")
      end
     else
      report("class is not covered")
     end
    end
   end
  else
   report("empty subclassset in %a subtype %i","chainedcontext",subtype)
  end
  return {
   format="class",
   rules=rules,
  }
 elseif subtype==3 then
  local before=readarray(f)
  local current=readarray(f)
  local after=readarray(f)
  local noflookups=readushort(f)
  local lookups=readlookuparray(f,noflookups,#current)
  before=readcoveragearray(f,tableoffset,before,true)
  current=readcoveragearray(f,tableoffset,current,true)
  after=readcoveragearray(f,tableoffset,after,true)
  return {
   format="coverage",
   rules={
    {
     before=before,
     current=current,
     after=after,
     lookups=lookups,
    }
   }
  }
 else
  report("unsupported subtype %a in %a %s",subtype,"chainedcontext",what)
 end
end
local function extension(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs,types,handlers,what)
 local tableoffset=lookupoffset+offset
 setposition(f,tableoffset)
 local subtype=readushort(f)
 if subtype==1 then
  local lookuptype=types[readushort(f)]
  local faroffset=readulong(f)
  local handler=handlers[lookuptype]
  if handler then
   return handler(f,fontdata,lookupid,tableoffset+faroffset,0,glyphs,nofglyphs),lookuptype
  else
   report("no handler for lookuptype %a subtype %a in %s %s",lookuptype,subtype,what,"extension")
  end
 else
  report("unsupported subtype %a in %s %s",subtype,what,"extension")
 end
end
function gsubhandlers.single(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs)
 local tableoffset=lookupoffset+offset
 setposition(f,tableoffset)
 local subtype=readushort(f)
 if subtype==1 then
  local coverage=readushort(f)
  local delta=readshort(f) 
  local coverage=readcoverage(f,tableoffset+coverage) 
  for index in next,coverage do
   local newindex=(index+delta)%65536 
   if index>nofglyphs or newindex>nofglyphs then
    report("invalid index in %s format %i: %i -> %i (max %i)","single",subtype,index,newindex,nofglyphs)
    coverage[index]=nil
   else
    coverage[index]=newindex
   end
  end
  return {
   coverage=coverage
  }
 elseif subtype==2 then 
  local coverage=readushort(f)
  local nofreplacements=readushort(f)
  local replacements=readcardinaltable(f,nofreplacements,ushort)
  local coverage=readcoverage(f,tableoffset+coverage) 
  for index,newindex in next,coverage do
   newindex=newindex+1
   if index>nofglyphs or newindex>nofglyphs then
    report("invalid index in %s format %i: %i -> %i (max %i)","single",subtype,index,newindex,nofglyphs)
    coverage[index]=nil
   else
    coverage[index]=replacements[newindex]
   end
  end
  return {
   coverage=coverage
  }
 else
  report("unsupported subtype %a in %a substitution",subtype,"single")
 end
end
local function sethandler(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs,what)
 local tableoffset=lookupoffset+offset
 setposition(f,tableoffset)
 local subtype=readushort(f)
 if subtype==1 then
  local coverage=readushort(f)
  local nofsequence=readushort(f)
  local sequences=readcardinaltable(f,nofsequence,ushort)
  for i=1,nofsequence do
   setposition(f,tableoffset+sequences[i])
   sequences[i]=readcardinaltable(f,readushort(f),ushort)
  end
  local coverage=readcoverage(f,tableoffset+coverage)
  for index,newindex in next,coverage do
   newindex=newindex+1
   if index>nofglyphs or newindex>nofglyphs then
    report("invalid index in %s format %i: %i -> %i (max %i)",what,subtype,index,newindex,nofglyphs)
    coverage[index]=nil
   else
    coverage[index]=sequences[newindex]
   end
  end
  return {
   coverage=coverage
  }
 else
  report("unsupported subtype %a in %a substitution",subtype,what)
 end
end
function gsubhandlers.multiple(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs)
 return sethandler(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs,"multiple")
end
function gsubhandlers.alternate(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs)
 return sethandler(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs,"alternate")
end
function gsubhandlers.ligature(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs)
 local tableoffset=lookupoffset+offset
 setposition(f,tableoffset)
 local subtype=readushort(f)
 if subtype==1 then
  local coverage=readushort(f)
  local nofsets=readushort(f)
  local ligatures=readcardinaltable(f,nofsets,ushort)
  for i=1,nofsets do
   local offset=lookupoffset+offset+ligatures[i]
   setposition(f,offset)
   local n=readushort(f)
   if n==1 then
    ligatures[i]={ offset+readushort(f) }
   else
    local l={}
    for i=1,n do
     l[i]=offset+readushort(f)
    end
    ligatures[i]=l
   end
  end
  local coverage=readcoverage(f,tableoffset+coverage)
  for index,newindex in next,coverage do
   local hash={}
   local ligatures=ligatures[newindex+1]
   for i=1,#ligatures do
    local offset=ligatures[i]
    setposition(f,offset)
    local lig=readushort(f)
    local cnt=readushort(f)
    local hsh=hash
    for i=2,cnt do
     local c=readushort(f)
     local h=hsh[c]
     if not h then
      h={}
      hsh[c]=h
     end
     hsh=h
    end
    hsh.ligature=lig
   end
   coverage[index]=hash
  end
  return {
   coverage=coverage
  }
 else
  report("unsupported subtype %a in %a substitution",subtype,"ligature")
 end
end
function gsubhandlers.context(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs)
 return unchainedcontext(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs,"substitution"),"context"
end
function gsubhandlers.chainedcontext(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs)
 return chainedcontext(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs,"substitution"),"chainedcontext"
end
function gsubhandlers.extension(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs)
 return extension(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs,gsubtypes,gsubhandlers,"substitution")
end
function gsubhandlers.reversechainedcontextsingle(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs)
 local tableoffset=lookupoffset+offset
 setposition(f,tableoffset)
 local subtype=readushort(f)
 if subtype==1 then 
  local current=readfirst(f)
  local before=readarray(f)
  local after=readarray(f)
  local replacements=readarray(f)
  current=readcoveragearray(f,tableoffset,current,true)
  before=readcoveragearray(f,tableoffset,before,true)
  after=readcoveragearray(f,tableoffset,after,true)
  return {
   format="reversecoverage",
   rules={
    {
     before=before,
     current=current,
     after=after,
     replacements=replacements,
    }
   }
  },"reversechainedcontextsingle"
 else
  report("unsupported subtype %a in %a substitution",subtype,"reversechainedcontextsingle")
 end
end
local function readpairsets(f,tableoffset,sets,format1,format2,mainoffset,getdelta)
 local done={}
 for i=1,#sets do
  local offset=sets[i]
  local reused=done[offset]
  if not reused then
   offset=tableoffset+offset
   setposition(f,offset)
   local n=readushort(f)
   reused={}
   for i=1,n do
    reused[i]={
     readushort(f),
     readposition(f,format1,offset,getdelta),
     readposition(f,format2,offset,getdelta),
    }
   end
   done[offset]=reused
  end
  sets[i]=reused
 end
 return sets
end
local function readpairclasssets(f,nofclasses1,nofclasses2,format1,format2,mainoffset,getdelta)
 local classlist1={}
 for i=1,nofclasses1 do
  local classlist2={}
  classlist1[i]=classlist2
  for j=1,nofclasses2 do
   local one=readposition(f,format1,mainoffset,getdelta)
   local two=readposition(f,format2,mainoffset,getdelta)
   if one or two then
    classlist2[j]={ one,two }
   else
    classlist2[j]=false
   end
  end
 end
 return classlist1
end
function gposhandlers.single(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs)
 local tableoffset=lookupoffset+offset
 setposition(f,tableoffset)
 local subtype=readushort(f)
 local getdelta=fontdata.temporary.getdelta
 if subtype==1 then
  local coverage=readushort(f)
  local format=readushort(f)
  local value=readposition(f,format,tableoffset,getdelta)
  local coverage=readcoverage(f,tableoffset+coverage)
  for index,newindex in next,coverage do
   coverage[index]=value 
  end
  return {
   format="single",
   coverage=coverage,
  }
 elseif subtype==2 then
  local coverage=readushort(f)
  local format=readushort(f)
  local nofvalues=readushort(f)
  local values={}
  for i=1,nofvalues do
   values[i]=readposition(f,format,tableoffset,getdelta)
  end
  local coverage=readcoverage(f,tableoffset+coverage)
  for index,newindex in next,coverage do
   coverage[index]=values[newindex+1]
  end
  return {
   format="single",
   coverage=coverage,
  }
 else
  report("unsupported subtype %a in %a positioning",subtype,"single")
 end
end
function gposhandlers.pair(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs)
 local tableoffset=lookupoffset+offset
 setposition(f,tableoffset)
 local subtype=readushort(f)
 local getdelta=fontdata.temporary.getdelta
 if subtype==1 then
  local coverage=readushort(f)
  local format1=readushort(f)
  local format2=readushort(f)
  local sets=readarray(f)
     sets=readpairsets(f,tableoffset,sets,format1,format2,mainoffset,getdelta)
     coverage=readcoverage(f,tableoffset+coverage)
  local shared={} 
  for index,newindex in next,coverage do
   local set=sets[newindex+1]
   local hash={}
   for i=1,#set do
    local value=set[i]
    if value then
     local other=value[1]
     local share=shared[value]
     if share==nil then
      local first=value[2]
      local second=value[3]
      if first or second then
       share={ first,second or nil } 
      else
       share=false
      end
      shared[value]=share
     end
     hash[other]=share or nil 
    end
   end
   coverage[index]=hash
  end
  return {
   shared=shared and true or nil,
   format="pair",
   coverage=coverage,
  }
 elseif subtype==2 then
  local coverage=readushort(f)
  local format1=readushort(f)
  local format2=readushort(f)
  local classdef1=readushort(f)
  local classdef2=readushort(f)
  local nofclasses1=readushort(f) 
  local nofclasses2=readushort(f) 
  local classlist=readpairclasssets(f,nofclasses1,nofclasses2,format1,format2,tableoffset,getdelta)
     coverage=readcoverage(f,tableoffset+coverage)
     classdef1=readclassdef(f,tableoffset+classdef1,coverage)
     classdef2=readclassdef(f,tableoffset+classdef2,nofglyphs)
  local usedcoverage={}
  local shared={} 
  for g1,c1 in next,classdef1 do
   if coverage[g1] then
    local l1=classlist[c1]
    if l1 then
     local hash={}
     for paired,class in next,classdef2 do
      local offsets=l1[class]
      if offsets then
       local first=offsets[1]
       local second=offsets[2]
       if first or second then
        local s1=shared[first]
        if s1==nil then
         s1={}
         shared[first]=s1
        end
        local s2=s1[second]
        if s2==nil then
         s2={ first,second or nil }
         s1[second]=s2
        end
        hash[paired]=s2
       end
      end
     end
     usedcoverage[g1]=hash
    end
   end
  end
  return {
   shared=shared and true or nil,
   format="pair",
   coverage=usedcoverage,
  }
 elseif subtype==3 then
  report("yet unsupported subtype %a in %a positioning",subtype,"pair")
 else
  report("unsupported subtype %a in %a positioning",subtype,"pair")
 end
end
function gposhandlers.cursive(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs)
 local tableoffset=lookupoffset+offset
 setposition(f,tableoffset)
 local subtype=readushort(f)
 local getdelta=fontdata.temporary.getdelta
 if subtype==1 then
  local coverage=tableoffset+readushort(f)
  local nofrecords=readushort(f)
  local records={}
  for i=1,nofrecords do
   local entry=readushort(f)
   local exit=readushort(f)
   records[i]={
    entry~=0 and (tableoffset+entry) or false,
    exit~=0 and (tableoffset+exit ) or nil,
   }
  end
  local cc=(fontdata.temporary.cursivecount or 0)+1
  fontdata.temporary.cursivecount=cc
  cc="cc-"..cc
  coverage=readcoverage(f,coverage)
  for i=1,nofrecords do
   local r=records[i]
   records[i]={
    cc,
    readanchor(f,r[1],getdelta) or false,
    readanchor(f,r[2],getdelta) or nil,
   }
  end
  for index,newindex in next,coverage do
   coverage[index]=records[newindex+1]
  end
  return {
   coverage=coverage,
  }
 else
  report("unsupported subtype %a in %a positioning",subtype,"cursive")
 end
end
local function handlemark(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs,ligature)
 local tableoffset=lookupoffset+offset
 setposition(f,tableoffset)
 local subtype=readushort(f)
 local getdelta=fontdata.temporary.getdelta
 if subtype==1 then
  local markcoverage=tableoffset+readushort(f)
  local basecoverage=tableoffset+readushort(f)
  local nofclasses=readushort(f)
  local markoffset=tableoffset+readushort(f)
  local baseoffset=tableoffset+readushort(f)
  local markcoverage=readcoverage(f,markcoverage)
  local basecoverage=readcoverage(f,basecoverage,true)
  setposition(f,markoffset)
  local markclasses={}
  local nofmarkclasses=readushort(f)
  local lastanchor=fontdata.lastanchor or 0
  local usedanchors={}
  for i=1,nofmarkclasses do
   local class=readushort(f)+1
   local offset=readushort(f)
   if offset==0 then
    markclasses[i]=false
   else
    markclasses[i]={ class,markoffset+offset }
   end
   usedanchors[class]=true
  end
  for i=1,nofmarkclasses do
   local mc=markclasses[i]
   if mc then
    mc[2]=readanchor(f,mc[2],getdelta)
   end
  end
  setposition(f,baseoffset)
  local nofbaserecords=readushort(f)
  local baserecords={}
  if ligature then
   for i=1,nofbaserecords do 
    local offset=readushort(f)
    if offset==0 then
     baserecords[i]=false
    else
     baserecords[i]=baseoffset+offset
    end
   end
   for i=1,nofbaserecords do
    local recordoffset=baserecords[i]
    if recordoffset then
     setposition(f,recordoffset)
     local nofcomponents=readushort(f)
     local components={}
     for i=1,nofcomponents do
      local classes={}
      for i=1,nofclasses do
       local offset=readushort(f)
       if offset~=0 then
        classes[i]=recordoffset+offset
       else
        classes[i]=false
       end
      end
      components[i]=classes
     end
     baserecords[i]=components
    end
   end
   local baseclasses={} 
   for i=1,nofclasses do
    baseclasses[i]={}
   end
   for i=1,nofbaserecords do
    local components=baserecords[i]
    if components then
     local b=basecoverage[i]
     for c=1,#components do
      local classes=components[c]
      if classes then
       for i=1,nofclasses do
        local anchor=readanchor(f,classes[i],getdelta)
        local bclass=baseclasses[i]
        local bentry=bclass[b]
        if bentry then
         bentry[c]=anchor
        else
         bclass[b]={ [c]=anchor }
        end
       end
      end
     end
    end
   end
   for index,newindex in next,markcoverage do
    markcoverage[index]=markclasses[newindex+1] or nil
   end
   return {
    format="ligature",
    baseclasses=baseclasses,
    coverage=markcoverage,
   }
  else
   for i=1,nofbaserecords do
    local r={}
    for j=1,nofclasses do
     local offset=readushort(f)
     if offset==0 then
      r[j]=false
     else
      r[j]=baseoffset+offset
     end
    end
    baserecords[i]=r
   end
   local baseclasses={} 
   for i=1,nofclasses do
    baseclasses[i]={}
   end
   for i=1,nofbaserecords do
    local r=baserecords[i]
    local b=basecoverage[i]
    for j=1,nofclasses do
     baseclasses[j][b]=readanchor(f,r[j],getdelta)
    end
   end
   for index,newindex in next,markcoverage do
    markcoverage[index]=markclasses[newindex+1] or nil
   end
   return {
    format="base",
    baseclasses=baseclasses,
    coverage=markcoverage,
   }
  end
 else
  report("unsupported subtype %a in",subtype)
 end
end
function gposhandlers.marktobase(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs)
 return handlemark(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs)
end
function gposhandlers.marktoligature(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs)
 return handlemark(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs,true)
end
function gposhandlers.marktomark(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs)
 return handlemark(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs)
end
function gposhandlers.context(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs)
 return unchainedcontext(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs,"positioning"),"context"
end
function gposhandlers.chainedcontext(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs)
 return chainedcontext(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs,"positioning"),"chainedcontext"
end
function gposhandlers.extension(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs)
 return extension(f,fontdata,lookupid,lookupoffset,offset,glyphs,nofglyphs,gpostypes,gposhandlers,"positioning")
end
do
 local plugins={}
 function plugins.size(f,fontdata,tableoffset,feature)
  if fontdata.designsize then
  else
   local function check(offset)
    setposition(f,offset)
    local designsize=readushort(f)
    if designsize>0 then 
     local fontstyleid=readushort(f)
     local guimenuid=readushort(f)
     local minsize=readushort(f)
     local maxsize=readushort(f)
     if minsize==0 and maxsize==0 and fontstyleid==0 and guimenuid==0 then
      minsize=designsize
      maxsize=designsize
     end
     if designsize>=minsize and designsize<=maxsize then
      return minsize,maxsize,designsize
     end
    end
   end
   local minsize,maxsize,designsize=check(tableoffset+feature.offset+feature.parameters)
   if not designsize then
    minsize,maxsize,designsize=check(tableoffset+feature.parameters)
    if designsize then
     report("bad size feature in %a, falling back to wrong offset",fontdata.filename or "?")
    else
     report("bad size feature in %a,",fontdata.filename or "?")
    end
   end
   if designsize then
    fontdata.minsize=minsize
    fontdata.maxsize=maxsize
    fontdata.designsize=designsize
   end
  end
 end
 local function reorderfeatures(fontdata,scripts,features)
  local scriptlangs={}
  local featurehash={}
  local featureorder={}
  for script,languages in next,scripts do
   for language,record in next,languages do
    local hash={}
    local list=record.featureindices
    for k=1,#list do
     local index=list[k]
     local feature=features[index]
     local lookups=feature.lookups
     local tag=feature.tag
     if tag then
      hash[tag]=true
     end
     if lookups then
      for i=1,#lookups do
       local lookup=lookups[i]
       local o=featureorder[lookup]
       if o then
        local okay=true
        for i=1,#o do
         if o[i]==tag then
          okay=false
          break
         end
        end
        if okay then
         o[#o+1]=tag
        end
       else
        featureorder[lookup]={ tag }
       end
       local f=featurehash[lookup]
       if f then
        local h=f[tag]
        if h then
         local s=h[script]
         if s then
          s[language]=true
         else
          h[script]={ [language]=true }
         end
        else
         f[tag]={ [script]={ [language]=true } }
        end
       else
        featurehash[lookup]={ [tag]={ [script]={ [language]=true } } }
       end
       local h=scriptlangs[tag]
       if h then
        local s=h[script]
        if s then
         s[language]=true
        else
         h[script]={ [language]=true }
        end
       else
        scriptlangs[tag]={ [script]={ [language]=true } }
       end
      end
     end
    end
   end
  end
  return scriptlangs,featurehash,featureorder
 end
 local function readscriplan(f,fontdata,scriptoffset)
  setposition(f,scriptoffset)
  local nofscripts=readushort(f)
  local scripts={}
  for i=1,nofscripts do
   scripts[readtag(f)]=scriptoffset+readushort(f)
  end
  local languagesystems=setmetatableindex("table")
  for script,offset in next,scripts do
   setposition(f,offset)
   local defaultoffset=readushort(f)
   local noflanguages=readushort(f)
   local languages={}
   if defaultoffset>0 then
    languages.dflt=languagesystems[offset+defaultoffset]
   end
   for i=1,noflanguages do
    local language=readtag(f)
    local offset=offset+readushort(f)
    languages[language]=languagesystems[offset]
   end
   scripts[script]=languages
  end
  for offset,usedfeatures in next,languagesystems do
   if offset>0 then
    setposition(f,offset)
    local featureindices={}
    usedfeatures.featureindices=featureindices
    usedfeatures.lookuporder=readushort(f) 
    usedfeatures.requiredindex=readushort(f) 
    local noffeatures=readushort(f)
    for i=1,noffeatures do
     featureindices[i]=readushort(f)+1
    end
   end
  end
  return scripts
 end
 local function readfeatures(f,fontdata,featureoffset)
  setposition(f,featureoffset)
  local features={}
  local noffeatures=readushort(f)
  for i=1,noffeatures do
   features[i]={
    tag=readtag(f),
    offset=readushort(f)
   }
  end
  for i=1,noffeatures do
   local feature=features[i]
   local offset=featureoffset+feature.offset
   setposition(f,offset)
   local parameters=readushort(f) 
   local noflookups=readushort(f)
   if noflookups>0 then
    local lookups=readcardinaltable(f,noflookups,ushort)
    feature.lookups=lookups
    for j=1,noflookups do
     lookups[j]=lookups[j]+1
    end
   end
   if parameters>0 then
    feature.parameters=parameters
    local plugin=plugins[feature.tag]
    if plugin then
     plugin(f,fontdata,featureoffset,feature)
    end
   end
  end
  return features
 end
 local function readlookups(f,lookupoffset,lookuptypes,featurehash,featureorder)
  setposition(f,lookupoffset)
  local noflookups=readushort(f)
  local lookups=readcardinaltable(f,noflookups,ushort)
  for lookupid=1,noflookups do
   local offset=lookups[lookupid]
   setposition(f,lookupoffset+offset)
   local subtables={}
   local typebits=readushort(f)
   local flagbits=readushort(f)
   local lookuptype=lookuptypes[typebits]
   local lookupflags=lookupflags[flagbits]
   local nofsubtables=readushort(f)
   for j=1,nofsubtables do
    subtables[j]=offset+readushort(f) 
   end
   local markclass=band(flagbits,0x0010)~=0 
   if markclass then
    markclass=readushort(f) 
   end
   local markset=rshift(flagbits,8)
   if markset>0 then
    markclass=markset 
   end
   lookups[lookupid]={
    type=lookuptype,
    flags=lookupflags,
    name=lookupid,
    subtables=subtables,
    markclass=markclass,
    features=featurehash[lookupid],
    order=featureorder[lookupid],
   }
  end
  return lookups
 end
 local f_lookupname=formatters["%s_%s_%s"]
 local function resolvelookups(f,lookupoffset,fontdata,lookups,lookuptypes,lookuphandlers,what,tableoffset)
  local sequences=fontdata.sequences  or {}
  local sublookuplist=fontdata.sublookups or {}
  fontdata.sequences=sequences
  fontdata.sublookups=sublookuplist
  local nofsublookups=#sublookuplist
  local nofsequences=#sequences 
  local lastsublookup=nofsublookups
  local lastsequence=nofsequences
  local lookupnames=lookupnames[what]
  local sublookuphash={}
  local sublookupcheck={}
  local glyphs=fontdata.glyphs
  local nofglyphs=fontdata.nofglyphs or #glyphs
  local noflookups=#lookups
  local lookupprefix=sub(what,2,2)
  local usedlookups=false
  for lookupid=1,noflookups do
   local lookup=lookups[lookupid]
   local lookuptype=lookup.type
   local subtables=lookup.subtables
   local features=lookup.features
   local handler=lookuphandlers[lookuptype]
   if handler then
    local nofsubtables=#subtables
    local order=lookup.order
    local flags=lookup.flags
    if flags[1] then flags[1]="mark" end
    if flags[2] then flags[2]="ligature" end
    if flags[3] then flags[3]="base" end
    local markclass=lookup.markclass
    if nofsubtables>0 then
     local steps={}
     local nofsteps=0
     local oldtype=nil
     for s=1,nofsubtables do
      local step,lt=handler(f,fontdata,lookupid,lookupoffset,subtables[s],glyphs,nofglyphs)
      if lt then
       lookuptype=lt
       if oldtype and lt~=oldtype then
        report("messy %s lookup type %a and %a",what,lookuptype,oldtype)
       end
       oldtype=lookuptype
      end
      if not step then
       report("unsupported %s lookup type %a",what,lookuptype)
      else
       nofsteps=nofsteps+1
       steps[nofsteps]=step
       local rules=step.rules
       if rules then
        for i=1,#rules do
         local rule=rules[i]
         local before=rule.before
         local current=rule.current
         local after=rule.after
         local replacements=rule.replacements
         if before then
          for i=1,#before do
           before[i]=tohash(before[i])
          end
          rule.before=reversed(before)
         end
         if current then
          if replacements then
           local first=current[1]
           local hash={}
           local repl={}
           for i=1,#first do
            local c=first[i]
            hash[c]=true
            repl[c]=replacements[i]
           end
           rule.current={ hash }
           rule.replacements=repl
          else
           for i=1,#current do
            current[i]=tohash(current[i])
           end
          end
         else
         end
         if after then
          for i=1,#after do
           after[i]=tohash(after[i])
          end
         end
         if usedlookups then
          local lookups=rule.lookups
          if lookups then
           for k,v in next,lookups do
            if v then
             for k,v in next,v do
              usedlookups[v]=usedlookups[v]+1
             end
            end
           end
          end
         end
        end
       end
      end
     end
     if nofsteps~=nofsubtables then
      report("bogus subtables removed in %s lookup type %a",what,lookuptype)
     end
     lookuptype=lookupnames[lookuptype] or lookuptype
     if features then
      nofsequences=nofsequences+1
      local l={
       index=nofsequences,
       name=f_lookupname(lookupprefix,"s",lookupid+lookupidoffset),
       steps=steps,
       nofsteps=nofsteps,
       type=lookuptype,
       markclass=markclass or nil,
       flags=flags,
       order=order,
       features=features,
      }
      sequences[nofsequences]=l
      lookup.done=l
     else
      nofsublookups=nofsublookups+1
      local l={
       index=nofsublookups,
       name=f_lookupname(lookupprefix,"l",lookupid+lookupidoffset),
       steps=steps,
       nofsteps=nofsteps,
       type=lookuptype,
       markclass=markclass or nil,
       flags=flags,
      }
      sublookuplist[nofsublookups]=l
      sublookuphash[lookupid]=nofsublookups
      sublookupcheck[lookupid]=0
      lookup.done=l
     end
    else
     report("no subtables for lookup %a",lookupid)
    end
   else
    report("no handler for lookup %a with type %a",lookupid,lookuptype)
   end
  end
  if usedlookups then
   report("used %s lookups: % t",what,sortedkeys(usedlookups))
  end
  local reported={}
  local function report_issue(i,what,sequence,kind)
   local name=sequence.name
   if not reported[name] then
    report("rule %i in %s lookup %a has %s lookups",i,what,name,kind)
    reported[name]=true
   end
  end
  for i=lastsequence+1,nofsequences do
   local sequence=sequences[i]
   local steps=sequence.steps
   for i=1,#steps do
    local step=steps[i]
    local rules=step.rules
    if rules then
     for i=1,#rules do
      local rule=rules[i]
      local rlookups=rule.lookups
      if not rlookups then
       report_issue(i,what,sequence,"no")
      elseif not next(rlookups) then
       rule.lookups=nil
      else
       local length=#rlookups
       for index=1,length do
        local lookuplist=rlookups[index]
        if lookuplist then
         local length=#lookuplist
         local found={}
         local noffound=0
         for index=1,length do
          local lookupid=lookuplist[index]
          if lookupid then
           local h=sublookuphash[lookupid]
           if not h then
            local lookup=lookups[lookupid]
            if lookup then
             local d=lookup.done
             if d then
              nofsublookups=nofsublookups+1
              local l={
               index=nofsublookups,
               name=f_lookupname(lookupprefix,"d",lookupid+lookupidoffset),
               derived=true,
               steps=d.steps,
               nofsteps=d.nofsteps,
               type=d.lookuptype or "gsub_single",
               markclass=d.markclass or nil,
               flags=d.flags,
              }
              sublookuplist[nofsublookups]=copy(l) 
              sublookuphash[lookupid]=nofsublookups
              sublookupcheck[lookupid]=1
              h=nofsublookups
             else
              report_issue(i,what,sequence,"missing")
              rule.lookups=nil
              break
             end
            else
             report_issue(i,what,sequence,"bad")
             rule.lookups=nil
             break
            end
           else
            sublookupcheck[lookupid]=sublookupcheck[lookupid]+1
           end
           if h then
            noffound=noffound+1
            found[noffound]=h
           end
          end
         end
         rlookups[index]=noffound>0 and found or false
        else
         rlookups[index]=false
        end
       end
      end
     end
    end
   end
  end
  for i,n in sortedhash(sublookupcheck) do
   local l=lookups[i]
   local t=l.type
   if n==0 and t~="extension" then
    local d=l.done
    report("%s lookup %s of type %a is not used",what,d and d.name or l.name,t)
   end
  end
 end
 local function loadvariations(f,fontdata,variationsoffset,lookuptypes,featurehash,featureorder)
  setposition(f,variationsoffset)
  local version=readulong(f) 
  local nofrecords=readulong(f)
  local records={}
  for i=1,nofrecords do
   records[i]={
    conditions=readulong(f),
    substitutions=readulong(f),
   }
  end
  for i=1,nofrecords do
   local record=records[i]
   local offset=record.conditions
   if offset==0 then
    record.condition=nil
    record.matchtype="always"
   else
    local offset=variationsoffset+offset
    setposition(f,offset)
    local nofconditions=readushort(f)
    local conditions={}
    for i=1,nofconditions do
     conditions[i]=offset+readulong(f)
    end
    record.conditions=conditions
    record.matchtype="condition"
   end
  end
  for i=1,nofrecords do
   local record=records[i]
   if record.matchtype=="condition" then
    local conditions=record.conditions
    for i=1,#conditions do
     setposition(f,conditions[i])
     conditions[i]={
      format=readushort(f),
      axis=readushort(f),
      minvalue=read2dot14(f),
      maxvalue=read2dot14(f),
     }
    end
   end
  end
  for i=1,nofrecords do
   local record=records[i]
   local offset=record.substitutions
   if offset==0 then
    record.substitutions={}
   else
    setposition(f,variationsoffset+offset)
    local version=readulong(f)
    local nofsubstitutions=readushort(f)
    local substitutions={}
    for i=1,nofsubstitutions do
     substitutions[readushort(f)]=readulong(f)
    end
    for index,alternates in sortedhash(substitutions) do
     if index==0 then
      record.substitutions=false
     else
      local tableoffset=variationsoffset+offset+alternates
      setposition(f,tableoffset)
      local parameters=readulong(f) 
      local noflookups=readushort(f)
      local lookups=readcardinaltable(f,noflookups,ushort)
      record.substitutions=lookups
     end
    end
   end
  end
  setvariabledata(fontdata,"features",records)
 end
 local function readscripts(f,fontdata,what,lookuptypes,lookuphandlers,lookupstoo)
  local tableoffset=gotodatatable(f,fontdata,what,true)
  if tableoffset then
   local version=readulong(f)
   local scriptoffset=tableoffset+readushort(f)
   local featureoffset=tableoffset+readushort(f)
   local lookupoffset=tableoffset+readushort(f)
   local variationsoffset=version>0x00010000 and (tableoffset+readulong(f)) or 0
   if not scriptoffset then
    return
   end
   local scripts=readscriplan(f,fontdata,scriptoffset)
   local features=readfeatures(f,fontdata,featureoffset)
   local scriptlangs,featurehash,featureorder=reorderfeatures(fontdata,scripts,features)
   if fontdata.features then
    fontdata.features[what]=scriptlangs
   else
    fontdata.features={ [what]=scriptlangs }
   end
   if not lookupstoo then
    return
   end
   local lookups=readlookups(f,lookupoffset,lookuptypes,featurehash,featureorder)
   if lookups then
    resolvelookups(f,lookupoffset,fontdata,lookups,lookuptypes,lookuphandlers,what,tableoffset)
   end
   if variationsoffset>0 then
    loadvariations(f,fontdata,variationsoffset,lookuptypes,featurehash,featureorder)
   end
  end
 end
 local function checkkerns(f,fontdata,specification)
  local datatable=fontdata.tables.kern
  if not datatable then
   return 
  end
  local features=fontdata.features
  local gposfeatures=features and features.gpos
  local name
  if not gposfeatures or not gposfeatures.kern then
   name="kern"
  elseif specification.globalkerns then
   name="globalkern"
  else
   report("ignoring global kern table, using gpos kern feature")
   return
  end
  setposition(f,datatable.offset)
  local version=readushort(f)
  local noftables=readushort(f)
  if noftables>1 then
   report("adding global kern table as gpos feature %a",name)
   local kerns=setmetatableindex("table")
   for i=1,noftables do
    local version=readushort(f)
    local length=readushort(f)
    local coverage=readushort(f)
    local format=rshift(coverage,8) 
    if format==0 then
     local nofpairs=readushort(f)
     local searchrange=readushort(f)
     local entryselector=readushort(f)
     local rangeshift=readushort(f)
     for i=1,nofpairs do
      kerns[readushort(f)][readushort(f)]=readfword(f)
     end
    elseif format==2 then
    else
    end
   end
   local feature={ dflt={ dflt=true } }
   if not features then
    fontdata.features={ gpos={ [name]=feature } }
   elseif not gposfeatures then
    fontdata.features.gpos={ [name]=feature }
   else
    gposfeatures[name]=feature
   end
   local sequences=fontdata.sequences
   if not sequences then
    sequences={}
    fontdata.sequences=sequences
   end
   local nofsequences=#sequences+1
   sequences[nofsequences]={
    index=nofsequences,
    name=name,
    steps={
     {
      coverage=kerns,
      format="kern",
     },
    },
    nofsteps=1,
    type="gpos_pair",
    flags={ false,false,false,false },
    order={ name },
    features={ [name]=feature },
   }
  else
   report("ignoring empty kern table of feature %a",name)
  end
 end
 function readers.gsub(f,fontdata,specification)
  if specification.details then
   readscripts(f,fontdata,"gsub",gsubtypes,gsubhandlers,specification.lookups)
  end
 end
 function readers.gpos(f,fontdata,specification)
  if specification.details then
   readscripts(f,fontdata,"gpos",gpostypes,gposhandlers,specification.lookups)
   if specification.lookups then
    checkkerns(f,fontdata,specification)
   end
  end
 end
end
function readers.gdef(f,fontdata,specification)
 if not specification.glyphs then
  return
 end
 local datatable=fontdata.tables.gdef
 if datatable then
  local tableoffset=datatable.offset
  setposition(f,tableoffset)
  local version=readulong(f)
  local classoffset=readushort(f)
  local attachmentoffset=readushort(f) 
  local ligaturecarets=readushort(f) 
  local markclassoffset=readushort(f)
  local marksetsoffset=version>=0x00010002 and readushort(f) or 0
  local varsetsoffset=version>=0x00010003 and readulong(f) or 0
  local glyphs=fontdata.glyphs
  local marks={}
  local markclasses=setmetatableindex("table")
  local marksets=setmetatableindex("table")
  fontdata.marks=marks
  fontdata.markclasses=markclasses
  fontdata.marksets=marksets
  if classoffset~=0 then
   setposition(f,tableoffset+classoffset)
   local classformat=readushort(f)
   if classformat==1 then
    local firstindex=readushort(f)
    local lastindex=firstindex+readushort(f)-1
    for index=firstindex,lastindex do
     local class=classes[readushort(f)]
     if class=="mark" then
      marks[index]=true
     end
     glyphs[index].class=class
    end
   elseif classformat==2 then
    local nofranges=readushort(f)
    for i=1,nofranges do
     local firstindex=readushort(f)
     local lastindex=readushort(f)
     local class=classes[readushort(f)]
     if class then
      for index=firstindex,lastindex do
       glyphs[index].class=class
       if class=="mark" then
        marks[index]=true
       end
      end
     end
    end
   end
  end
  if markclassoffset~=0 then
   setposition(f,tableoffset+markclassoffset)
   local classformat=readushort(f)
   if classformat==1 then
    local firstindex=readushort(f)
    local lastindex=firstindex+readushort(f)-1
    for index=firstindex,lastindex do
     markclasses[readushort(f)][index]=true
    end
   elseif classformat==2 then
    local nofranges=readushort(f)
    for i=1,nofranges do
     local firstindex=readushort(f)
     local lastindex=readushort(f)
     local class=markclasses[readushort(f)]
     for index=firstindex,lastindex do
      class[index]=true
     end
    end
   end
  end
  if marksetsoffset~=0 then
   marksetsoffset=tableoffset+marksetsoffset
   setposition(f,marksetsoffset)
   local format=readushort(f)
   if format==1 then
    local nofsets=readushort(f)
    local sets=readcardinaltable(f,nofsets,ulong)
    for i=1,nofsets do
     local offset=sets[i]
     if offset~=0 then
      marksets[i]=readcoverage(f,marksetsoffset+offset)
     end
    end
   end
  end
  local factors=specification.factors
  if (specification.variable or factors) and varsetsoffset~=0 then
   local regions,deltas=readvariationdata(f,tableoffset+varsetsoffset,factors)
   if factors then
    fontdata.temporary.getdelta=function(outer,inner)
     local delta=deltas[outer+1]
     if delta then
      local d=delta.deltas[inner+1]
      if d then
       local scales=delta.scales
       local dd=0
       for i=1,#scales do
        local di=d[i]
        if di then
         dd=dd+scales[i]*di
        else
         break
        end
       end
       return round(dd)
      end
     end
     return 0
    end
   end
  end
 end
end
local function readmathvalue(f)
 local v=readshort(f)
 skipshort(f,1) 
 return v
end
local function readmathconstants(f,fontdata,offset)
 setposition(f,offset)
 fontdata.mathconstants={
  ScriptPercentScaleDown=readshort(f),
  ScriptScriptPercentScaleDown=readshort(f),
  DelimitedSubFormulaMinHeight=readushort(f),
  DisplayOperatorMinHeight=readushort(f),
  MathLeading=readmathvalue(f),
  AxisHeight=readmathvalue(f),
  AccentBaseHeight=readmathvalue(f),
  FlattenedAccentBaseHeight=readmathvalue(f),
  SubscriptShiftDown=readmathvalue(f),
  SubscriptTopMax=readmathvalue(f),
  SubscriptBaselineDropMin=readmathvalue(f),
  SuperscriptShiftUp=readmathvalue(f),
  SuperscriptShiftUpCramped=readmathvalue(f),
  SuperscriptBottomMin=readmathvalue(f),
  SuperscriptBaselineDropMax=readmathvalue(f),
  SubSuperscriptGapMin=readmathvalue(f),
  SuperscriptBottomMaxWithSubscript=readmathvalue(f),
  SpaceAfterScript=readmathvalue(f),
  UpperLimitGapMin=readmathvalue(f),
  UpperLimitBaselineRiseMin=readmathvalue(f),
  LowerLimitGapMin=readmathvalue(f),
  LowerLimitBaselineDropMin=readmathvalue(f),
  StackTopShiftUp=readmathvalue(f),
  StackTopDisplayStyleShiftUp=readmathvalue(f),
  StackBottomShiftDown=readmathvalue(f),
  StackBottomDisplayStyleShiftDown=readmathvalue(f),
  StackGapMin=readmathvalue(f),
  StackDisplayStyleGapMin=readmathvalue(f),
  StretchStackTopShiftUp=readmathvalue(f),
  StretchStackBottomShiftDown=readmathvalue(f),
  StretchStackGapAboveMin=readmathvalue(f),
  StretchStackGapBelowMin=readmathvalue(f),
  FractionNumeratorShiftUp=readmathvalue(f),
  FractionNumeratorDisplayStyleShiftUp=readmathvalue(f),
  FractionDenominatorShiftDown=readmathvalue(f),
  FractionDenominatorDisplayStyleShiftDown=readmathvalue(f),
  FractionNumeratorGapMin=readmathvalue(f),
  FractionNumeratorDisplayStyleGapMin=readmathvalue(f),
  FractionRuleThickness=readmathvalue(f),
  FractionDenominatorGapMin=readmathvalue(f),
  FractionDenominatorDisplayStyleGapMin=readmathvalue(f),
  SkewedFractionHorizontalGap=readmathvalue(f),
  SkewedFractionVerticalGap=readmathvalue(f),
  OverbarVerticalGap=readmathvalue(f),
  OverbarRuleThickness=readmathvalue(f),
  OverbarExtraAscender=readmathvalue(f),
  UnderbarVerticalGap=readmathvalue(f),
  UnderbarRuleThickness=readmathvalue(f),
  UnderbarExtraDescender=readmathvalue(f),
  RadicalVerticalGap=readmathvalue(f),
  RadicalDisplayStyleVerticalGap=readmathvalue(f),
  RadicalRuleThickness=readmathvalue(f),
  RadicalExtraAscender=readmathvalue(f),
  RadicalKernBeforeDegree=readmathvalue(f),
  RadicalKernAfterDegree=readmathvalue(f),
  RadicalDegreeBottomRaisePercent=readshort(f),
 }
end
local function readmathglyphinfo(f,fontdata,offset)
 setposition(f,offset)
 local italics=readushort(f)
 local accents=readushort(f)
 local extensions=readushort(f)
 local kerns=readushort(f)
 local glyphs=fontdata.glyphs
 if italics~=0 then
  setposition(f,offset+italics)
  local coverage=readushort(f)
  local nofglyphs=readushort(f)
  coverage=readcoverage(f,offset+italics+coverage,true)
  setposition(f,offset+italics+4)
  for i=1,nofglyphs do
   local italic=readmathvalue(f)
   if italic~=0 then
    local glyph=glyphs[coverage[i]]
    local math=glyph.math
    if not math then
     glyph.math={ italic=italic }
    else
     math.italic=italic
    end
   end
  end
  fontdata.hasitalics=true
 end
 if accents~=0 then
  setposition(f,offset+accents)
  local coverage=readushort(f)
  local nofglyphs=readushort(f)
  coverage=readcoverage(f,offset+accents+coverage,true)
  setposition(f,offset+accents+4)
  for i=1,nofglyphs do
   local accent=readmathvalue(f)
   if accent~=0 then
    local glyph=glyphs[coverage[i]]
    local math=glyph.math
    if not math then
     glyph.math={ accent=accent }
    else
     math.accent=accent
    end
   end
  end
 end
 if extensions~=0 then
  setposition(f,offset+extensions)
 end
 if kerns~=0 then
  local kernoffset=offset+kerns
  setposition(f,kernoffset)
  local coverage=readushort(f)
  local nofglyphs=readushort(f)
  if nofglyphs>0 then
   local function get(offset)
    setposition(f,kernoffset+offset)
    local n=readushort(f)
    if n==0 then
     local k=readmathvalue(f)
     if k==0 then
     else
      return { { kern=k } }
     end
    else
     local l={}
     for i=1,n do
      l[i]={ height=readmathvalue(f) }
     end
     for i=1,n do
      l[i].kern=readmathvalue(f)
     end
     l[n+1]={ kern=readmathvalue(f) }
     return l
    end
   end
   local kernsets={}
   for i=1,nofglyphs do
    local topright=readushort(f)
    local topleft=readushort(f)
    local bottomright=readushort(f)
    local bottomleft=readushort(f)
    kernsets[i]={
     topright=topright~=0 and topright or nil,
     topleft=topleft~=0 and topleft  or nil,
     bottomright=bottomright~=0 and bottomright or nil,
     bottomleft=bottomleft~=0 and bottomleft  or nil,
    }
   end
   coverage=readcoverage(f,kernoffset+coverage,true)
   for i=1,nofglyphs do
    local kernset=kernsets[i]
    if next(kernset) then
     local k=kernset.topright if k then kernset.topright=get(k) end
     local k=kernset.topleft  if k then kernset.topleft=get(k) end
     local k=kernset.bottomright if k then kernset.bottomright=get(k) end
     local k=kernset.bottomleft  if k then kernset.bottomleft=get(k) end
     if next(kernset) then
      local glyph=glyphs[coverage[i]]
      local math=glyph.math
      if math then
       math.kerns=kernset
      else
       glyph.math={ kerns=kernset }
      end
     end
    end
   end
  end
 end
end
local function readmathvariants(f,fontdata,offset)
 setposition(f,offset)
 local glyphs=fontdata.glyphs
 local minoverlap=readushort(f)
 local vcoverage=readushort(f)
 local hcoverage=readushort(f)
 local vnofglyphs=readushort(f)
 local hnofglyphs=readushort(f)
 local vconstruction=readcardinaltable(f,vnofglyphs,ushort)
 local hconstruction=readcardinaltable(f,hnofglyphs,ushort)
 fontdata.mathconstants.MinConnectorOverlap=minoverlap
 local function get(offset,coverage,nofglyphs,construction,kvariants,kparts,kitalic)
  if coverage~=0 and nofglyphs>0 then
   local coverage=readcoverage(f,offset+coverage,true)
   for i=1,nofglyphs do
    local c=construction[i]
    if c~=0 then
     local index=coverage[i]
     local glyph=glyphs[index]
     local math=glyph.math
     setposition(f,offset+c)
     local assembly=readushort(f)
     local nofvariants=readushort(f)
     if nofvariants>0 then
      local variants,v=nil,0
      for i=1,nofvariants do
       local variant=readushort(f)
       if variant==index then
       elseif variants then
        v=v+1
        variants[v]=variant
       else
        v=1
        variants={ variant }
       end
       skipshort(f)
      end
      if not variants then
      elseif not math then
       math={ [kvariants]=variants }
       glyph.math=math
      else
       math[kvariants]=variants
      end
     end
     if assembly~=0 then
      setposition(f,offset+c+assembly)
      local italic=readmathvalue(f)
      local nofparts=readushort(f)
      local parts={}
      for i=1,nofparts do
       local p={
        glyph=readushort(f),
        start=readushort(f),
        ["end"]=readushort(f),
        advance=readushort(f),
       }
       local flags=readushort(f)
       if band(flags,0x0001)~=0 then
        p.extender=1 
       end
       parts[i]=p
      end
      if not math then
       math={
        [kparts]=parts
       }
       glyph.math=math
      else
       math[kparts]=parts
      end
      if italic and italic~=0 then
       math[kitalic]=italic
      end
     end
    end
   end
  end
 end
 get(offset,vcoverage,vnofglyphs,vconstruction,"vvariants","vparts","vitalic")
 get(offset,hcoverage,hnofglyphs,hconstruction,"hvariants","hparts","hitalic")
end
function readers.math(f,fontdata,specification)
 local tableoffset=gotodatatable(f,fontdata,"math",specification.glyphs)
 if tableoffset then
  local version=readulong(f)
  local constants=readushort(f)
  local glyphinfo=readushort(f)
  local variants=readushort(f)
  if constants==0 then
   report("the math table of %a has no constants",fontdata.filename)
  else
   readmathconstants(f,fontdata,tableoffset+constants)
  end
  if glyphinfo~=0 then
   readmathglyphinfo(f,fontdata,tableoffset+glyphinfo)
  end
  if variants~=0 then
   readmathvariants(f,fontdata,tableoffset+variants)
  end
 end
end
function readers.colr(f,fontdata,specification)
 local tableoffset=gotodatatable(f,fontdata,"colr",specification.glyphs)
 if tableoffset then
  local version=readushort(f)
  if version~=0 then
   report("table version %a of %a is not supported (yet), maybe font %s is bad",version,"colr",fontdata.filename)
   return
  end
  if not fontdata.tables.cpal then
   report("color table %a in font %a has no mandate %a table","colr",fontdata.filename,"cpal")
   fontdata.colorpalettes={}
  end
  local glyphs=fontdata.glyphs
  local nofglyphs=readushort(f)
  local baseoffset=readulong(f)
  local layeroffset=readulong(f)
  local noflayers=readushort(f)
  local layerrecords={}
  local maxclass=0
  setposition(f,tableoffset+layeroffset)
  for i=1,noflayers do
   local slot=readushort(f)
   local class=readushort(f)
   if class<0xFFFF then
    class=class+1
    if class>maxclass then
     maxclass=class
    end
   end
   layerrecords[i]={
    slot=slot,
    class=class,
   }
  end
  fontdata.maxcolorclass=maxclass
  setposition(f,tableoffset+baseoffset)
  for i=0,nofglyphs-1 do
   local glyphindex=readushort(f)
   local firstlayer=readushort(f)
   local noflayers=readushort(f)
   local t={}
   for i=1,noflayers do
    t[i]=layerrecords[firstlayer+i]
   end
   glyphs[glyphindex].colors=t
  end
 end
 fontdata.hascolor=true
end
function readers.cpal(f,fontdata,specification)
 local tableoffset=gotodatatable(f,fontdata,"cpal",specification.glyphs)
 if tableoffset then
  local version=readushort(f)
  local nofpaletteentries=readushort(f)
  local nofpalettes=readushort(f)
  local nofcolorrecords=readushort(f)
  local firstcoloroffset=readulong(f)
  local colorrecords={}
  local palettes=readcardinaltable(f,nofpalettes,ushort)
  if version==1 then
   local palettettypesoffset=readulong(f)
   local palettelabelsoffset=readulong(f)
   local paletteentryoffset=readulong(f)
  end
  setposition(f,tableoffset+firstcoloroffset)
  for i=1,nofcolorrecords do
   local b,g,r,a=readbytes(f,4)
   colorrecords[i]={
    r,g,b,a~=255 and a or nil,
   }
  end
  for i=1,nofpalettes do
   local p={}
   local o=palettes[i]
   for j=1,nofpaletteentries do
    p[j]=colorrecords[o+j]
   end
   palettes[i]=p
  end
  fontdata.colorpalettes=palettes
 end
end
local compress=gzip and gzip.compress
local compressed=compress and gzip.compressed
function readers.svg(f,fontdata,specification)
 local tableoffset=gotodatatable(f,fontdata,"svg",specification.glyphs)
 if tableoffset then
  local version=readushort(f)
  local glyphs=fontdata.glyphs
  local indexoffset=tableoffset+readulong(f)
  local reserved=readulong(f)
  setposition(f,indexoffset)
  local nofentries=readushort(f)
  local entries={}
  for i=1,nofentries do
   entries[i]={
    first=readushort(f),
    last=readushort(f),
    offset=indexoffset+readulong(f),
    length=readulong(f),
   }
  end
  for i=1,nofentries do
   local entry=entries[i]
   setposition(f,entry.offset)
   local data=readstring(f,entry.length)
   if compressed and not compressed(data) then
    data=compress(data)
   end
   entries[i]={
    first=entry.first,
    last=entry.last,
    data=data
   }
  end
  fontdata.svgshapes=entries
 end
 fontdata.hascolor=true
end
function readers.sbix(f,fontdata,specification)
 local tableoffset=gotodatatable(f,fontdata,"sbix",specification.glyphs)
 if tableoffset then
  local version=readushort(f)
  local flags=readushort(f)
  local nofstrikes=readulong(f)
  local strikes={}
  local nofglyphs=fontdata.nofglyphs
  for i=1,nofstrikes do
   strikes[i]=readulong(f)
  end
  local shapes={}
  local done=0
  for i=1,nofstrikes do
   local strikeoffset=strikes[i]+tableoffset
   setposition(f,strikeoffset)
   strikes[i]={
    ppem=readushort(f),
    ppi=readushort(f),
    offset=strikeoffset
   }
  end
  sort(strikes,function(a,b)
   if b.ppem==a.ppem then
    return b.ppi<a.ppi
   else
    return b.ppem<a.ppem
   end
  end)
  local glyphs={}
  local delayed=CONTEXTLMTXMODE and CONTEXTLMTXMODE>0 or fonts.handlers.typethree
  for i=1,nofstrikes do
   local strike=strikes[i]
   local strikeppem=strike.ppem
   local strikeppi=strike.ppi
   local strikeoffset=strike.offset
   setposition(f,strikeoffset)
   for i=0,nofglyphs do
    glyphs[i]=readulong(f)
   end
   local glyphoffset=glyphs[0]
   for i=0,nofglyphs-1 do
    local nextoffset=glyphs[i+1]
    if not shapes[i] then
     local datasize=nextoffset-glyphoffset
     if datasize>0 then
      setposition(f,strikeoffset+glyphoffset)
      local x=readshort(f)
      local y=readshort(f)
      local tag=readtag(f) 
      local size=datasize-8
      local data=nil
      local offset=nil
      if delayed then
       offset=getposition(f)
       data=nil
      else
       data=readstring(f,size)
       size=nil
      end
      shapes[i]={
       x=x,
       y=y,
       o=offset,
       s=size,
       data=data,
      }
      done=done+1
      if done==nofglyphs then
       break
      end
     end
    end
    glyphoffset=nextoffset
   end
  end
  fontdata.pngshapes=shapes
 end
end
do
 local function getmetrics(f)
  return {
   ascender=readinteger(f),
   descender=readinteger(f),
   widthmax=readuinteger(f),
   caretslopedumerator=readinteger(f),
   caretslopedenominator=readinteger(f),
   caretoffset=readinteger(f),
   minorigin=readinteger(f),
   minadvance=readinteger(f),
   maxbefore=readinteger(f),
   minafter=readinteger(f),
   pad1=readinteger(f),
   pad2=readinteger(f),
  }
 end
 local function getbigmetrics(f)
  return {
   height=readuinteger(f),
   width=readuinteger(f),
   horiBearingX=readinteger(f),
   horiBearingY=readinteger(f),
   horiAdvance=readuinteger(f),
   vertBearingX=readinteger(f),
   vertBearingY=readinteger(f),
   vertAdvance=readuinteger(f),
  }
 end
 local function getsmallmetrics(f)
  return {
   height=readuinteger(f),
   width=readuinteger(f),
   bearingX=readinteger(f),
   bearingY=readinteger(f),
   advance=readuinteger(f),
  }
 end
 function readers.cblc(f,fontdata,specification)
  local ctdttableoffset=gotodatatable(f,fontdata,"cbdt",specification.glyphs)
  if not ctdttableoffset then
   return
  end
  local cblctableoffset=gotodatatable(f,fontdata,"cblc",specification.glyphs)
  if cblctableoffset then
   local majorversion=readushort(f)
   local minorversion=readushort(f)
   local nofsizetables=readulong(f)
   local sizetables={}
   local shapes={}
   local subtables={}
   for i=1,nofsizetables do
    sizetables[i]={
     subtables=readulong(f),
     indexsize=readulong(f),
     nofsubtables=readulong(f),
     colorref=readulong(f),
     hormetrics=getmetrics(f),
     vermetrics=getmetrics(f),
     firstindex=readushort(f),
     lastindex=readushort(f),
     ppemx=readbyte(f),
     ppemy=readbyte(f),
     bitdepth=readbyte(f),
     flags=readbyte(f),
    }
   end
   sort(sizetables,function(a,b)
    if b.ppemx==a.ppemx then
     return b.bitdepth<a.bitdepth
    else
     return b.ppemx<a.ppemx
    end
   end)
   for i=1,nofsizetables do
    local s=sizetables[i]
    local d=false
    for j=s.firstindex,s.lastindex do
     if not shapes[j] then
      shapes[j]=i
      d=true
     end
    end
    if d then
     s.used=true
    end
   end
   for i=1,nofsizetables do
    local s=sizetables[i]
    if s.used then
     local offset=s.subtables
     setposition(f,cblctableoffset+offset)
     for j=1,s.nofsubtables do
      local firstindex=readushort(f)
      local lastindex=readushort(f)
      local tableoffset=readulong(f)+offset
      for k=firstindex,lastindex do
       if shapes[k]==i then
        local s=subtables[tableoffset]
        if not s then
         s={
          firstindex=firstindex,
          lastindex=lastindex,
         }
         subtables[tableoffset]=s
        end
        shapes[k]=s
       end
      end
     end
    end
   end
   for offset,subtable in sortedhash(subtables) do
    local tabletype=readushort(f)
    subtable.format=readushort(f)
    local baseoffset=readulong(f)+ctdttableoffset
    local offsets={}
    local metrics=nil
    if tabletype==1 then
     for i=subtable.firstindex,subtable.lastindex do
      offsets[i]=readulong(f)+baseoffset
     end
     skipbytes(f,4)
    elseif tabletype==2 then
     local size=readulong(f)
     local done=baseoffset
     metrics=getbigmetrics(f)
     for i=subtable.firstindex,subtable.lastindex do
      offsets[i]=done
      done=done+size
     end
    elseif tabletype==3 then
     local n=subtable.lastindex-subtable.firstindex+2
     for i=subtable.firstindex,subtable.lastindex do
      offsets[i]=readushort(f)+baseoffset
     end
     if math.odd(n) then
      skipbytes(f,4)
     else
      skipbytes(f,2)
     end
    elseif tabletype==4 then
     for i=1,readulong(f) do
      offsets[readushort(f)]=readushort(f)+baseoffset
     end
    elseif tabletype==5 then
     local size=readulong(f)
     local done=baseoffset
     metrics=getbigmetrics(f)
     local n=readulong(f)
     for i=1,n do
      offsets[readushort(f)]=done
      done=done+size
     end
     if math.odd(n) then
      skipbytes(f,2)
     end
    else
     return 
    end
    subtable.offsets=offsets
    subtable.metrics=metrics
   end
   local default={ width=0,height=0 }
   local glyphs=fontdata.glyphs
   local delayed=CONTEXTLMTXMODE and CONTEXTLMTXMODE>0 or fonts.handlers.typethree
   for index,subtable in sortedhash(shapes) do
    if type(subtable)=="table" then
     local data=nil
     local size=nil
     local metrics=default
     local format=subtable.format
     local offset=subtable.offsets[index]
     setposition(f,offset)
     if format==17 then
      metrics=getsmallmetrics(f)
      size=true
     elseif format==18 then
      metrics=getbigmetrics(f)
      size=true
     elseif format==19 then
      metrics=subtable.metrics
      size=true
     else
     end
     if size then
      size=readulong(f)
      if delayed then
       offset=getposition(f)
       data=nil
      else
       offset=nil
       data=readstring(f,size)
       size=nil
      end
     else
      offset=nil
     end
     local x=metrics.width
     local y=metrics.height
     shapes[index]={
      x=x,
      y=y,
      o=offset,
      s=size,
      data=data,
     }
     local glyph=glyphs[index]
     if not glyph.boundingbox then
      local width=glyph.width
      local height=width*y/x
      glyph.boundingbox={ 0,0,width,height }
     end
    else
     shapes[index]={
      x=0,
      y=0,
      data="",
     }
    end
   end
   fontdata.pngshapes=shapes 
  end
 end
 function readers.cbdt(f,fontdata,specification)
 end
end
function readers.stat(f,fontdata,specification)
 local tableoffset=gotodatatable(f,fontdata,"stat",true) 
 if tableoffset then
  local extras=fontdata.extras
  local version=readulong(f) 
  local axissize=readushort(f)
  local nofaxis=readushort(f)
  local axisoffset=readulong(f)
  local nofvalues=readushort(f)
  local valuesoffset=readulong(f)
  local fallbackname=extras[readushort(f)] 
  local axis={}
  local values={}
  setposition(f,tableoffset+axisoffset)
  for i=1,nofaxis do
   local tag=readtag(f)
   axis[i]={
    tag=tag,
    name=lower(extras[readushort(f)] or tag),
    ordering=readushort(f),
    variants={}
   }
  end
  setposition(f,tableoffset+valuesoffset)
  for i=1,nofvalues do
   values[i]=readushort(f)
  end
  for i=1,nofvalues do
   setposition(f,tableoffset+valuesoffset+values[i])
   local format=readushort(f)
   local index=readushort(f)+1
   local flags=readushort(f)
   local name=lower(extras[readushort(f)] or "no name")
   local value=readfixed(f)
   local variant
   if format==1 then
    variant={
     flags=flags,
     name=name,
     value=value,
    }
   elseif format==2 then
    variant={
     flags=flags,
     name=name,
     value=value,
     minimum=readfixed(f),
     maximum=readfixed(f),
    }
   elseif format==3 then
    variant={
     flags=flags,
     name=name,
     value=value,
     link=readfixed(f),
    }
   end
   insert(axis[index].variants,variant)
  end
  sort(axis,function(a,b)
   return a.ordering<b.ordering
  end)
  for i=1,#axis do
   local a=axis[i]
   sort(a.variants,function(a,b)
    return a.name<b.name
   end)
   a.ordering=nil
  end
  setvariabledata(fontdata,"designaxis",axis)
  setvariabledata(fontdata,"fallbackname",fallbackname)
 end
end
function readers.avar(f,fontdata,specification)
 local tableoffset=gotodatatable(f,fontdata,"avar",true) 
 if tableoffset then
  local function collect()
   local nofvalues=readushort(f)
   local values={}
   local lastfrom=false
   local lastto=false
   for i=1,nofvalues do
    local from=read2dot14(f)
    local to=read2dot14(f)
    if lastfrom and from<=lastfrom then
    elseif lastto and to>=lastto then
    else
     values[#values+1]={ from,to }
     lastfrom,lastto=from,to
    end
   end
   nofvalues=#values
   if nofvalues>2 then
    local some=values[1]
    if some[1]==-1 and some[2]==-1 then
     some=values[nofvalues]
     if some[1]==1 and some[2]==1 then
      for i=2,nofvalues-1 do
       some=values[i]
       if some[1]==0 and some[2]==0 then
        return values
       end
      end
     end
    end
   end
   return false
  end
  local version=readulong(f) 
  local reserved=readushort(f)
  local nofaxis=readushort(f)
  local segments={}
  for i=1,nofaxis do
   segments[i]=collect()
  end
  setvariabledata(fontdata,"segments",segments)
 end
end
function readers.fvar(f,fontdata,specification)
 local tableoffset=gotodatatable(f,fontdata,"fvar",true) 
 if tableoffset then
  local version=readulong(f) 
  local offsettoaxis=tableoffset+readushort(f)
  local reserved=skipshort(f)
  local nofaxis=readushort(f)
  local sizeofaxis=readushort(f)
  local nofinstances=readushort(f)
  local sizeofinstances=readushort(f)
  local extras=fontdata.extras
  local axis={}
  local instances={}
  setposition(f,offsettoaxis)
  for i=1,nofaxis do
   axis[i]={
    tag=readtag(f),
    minimum=readfixed(f),
    default=readfixed(f),
    maximum=readfixed(f),
    flags=readushort(f),
    name=lower(extras[readushort(f)] or "bad name"),
   }
   local n=sizeofaxis-20
   if n>0 then
    skipbytes(f,n)
   elseif n<0 then
   end
  end
  local nofbytes=2+2+2+nofaxis*4
  local readpsname=nofbytes<=sizeofinstances
  local skippable=sizeofinstances-nofbytes
  for i=1,nofinstances do
   local subfamid=readushort(f)
   local flags=readushort(f) 
   local values={}
   for i=1,nofaxis do
    values[i]={
     axis=axis[i].tag,
     value=readfixed(f),
    }
   end
   local psnameid=readpsname and readushort(f) or 0xFFFF
   if subfamid==2 or subfamid==17 then
   elseif subfamid==0xFFFF then
    subfamid=nil
   elseif subfamid<=256 or subfamid>=32768 then
    subfamid=nil 
   end
   if psnameid==6 then
   elseif psnameid==0xFFFF then
    psnameid=nil
   elseif psnameid<=256 or psnameid>=32768 then
    psnameid=nil 
   end
   instances[i]={
    subfamily=extras[subfamid],
    psname=psnameid and extras[psnameid] or nil,
    values=values,
   }
   if skippable>0 then
    skipbytes(f,skippable)
   end
  end
  setvariabledata(fontdata,"axis",axis)
  setvariabledata(fontdata,"instances",instances)
 end
end
function readers.hvar(f,fontdata,specification)
 local factors=specification.factors
 if not factors then
  return
 end
 local tableoffset=gotodatatable(f,fontdata,"hvar",specification.variable)
 if not tableoffset then
  return
 end
 local version=readulong(f) 
 local variationoffset=tableoffset+readulong(f) 
 local advanceoffset=tableoffset+readulong(f)
 local lsboffset=tableoffset+readulong(f)
 local rsboffset=tableoffset+readulong(f)
 local regions={}
 local variations={}
 local innerindex={} 
 local outerindex={} 
 if variationoffset>0 then
  regions,deltas=readvariationdata(f,variationoffset,factors)
 end
 if not regions then
  return
 end
 if advanceoffset>0 then
  setposition(f,advanceoffset)
  local format=readushort(f) 
  local mapcount=readushort(f)
  local entrysize=rshift(band(format,0x0030),4)+1
  local nofinnerbits=band(format,0x000F)+1 
  local innermask=lshift(1,nofinnerbits)-1
  local readcardinal=read_cardinal[entrysize] 
  for i=0,mapcount-1 do
   local mapdata=readcardinal(f)
   outerindex[i]=rshift(mapdata,nofinnerbits)
   innerindex[i]=band(mapdata,innermask)
  end
  setvariabledata(fontdata,"hvarwidths",true)
  local glyphs=fontdata.glyphs
  for i=0,fontdata.nofglyphs-1 do
   local glyph=glyphs[i]
   local width=glyph.width
   if width then
    local outer=outerindex[i] or 0
    local inner=innerindex[i] or i
    if outer and inner then 
     local delta=deltas[outer+1]
     if delta then
      local d=delta.deltas[inner+1]
      if d then
       local scales=delta.scales
       local deltaw=0
       for i=1,#scales do
        local di=d[i]
        if di then
         deltaw=deltaw+scales[i]*di
        else
         break 
        end
       end
       glyph.width=width+round(deltaw)
      end
     end
    end
   end
  end
 end
end
function readers.vvar(f,fontdata,specification)
 if not specification.variable then
  return
 end
end
function readers.mvar(f,fontdata,specification)
 local tableoffset=gotodatatable(f,fontdata,"mvar",specification.variable)
 if tableoffset then
  local version=readulong(f) 
  local reserved=skipshort(f,1)
  local recordsize=readushort(f)
  local nofrecords=readushort(f)
  local offsettostore=tableoffset+readushort(f)
  local dimensions={}
  local factors=specification.factors
  if factors then
   local regions,deltas=readvariationdata(f,offsettostore,factors)
   for i=1,nofrecords do
    local tag=readtag(f)
    local var=variabletags[tag]
    if var then
     local outer=readushort(f)
     local inner=readushort(f)
     local delta=deltas[outer+1]
     if delta then
      local d=delta.deltas[inner+1]
      if d then
       local scales=delta.scales
       local dd=0
       for i=1,#scales do
        dd=dd+scales[i]*d[i]
       end
       var(fontdata,round(dd))
      end
     end
    else
     skipshort(f,2)
    end
    if recordsize>8 then 
     skipbytes(recordsize-8)
    end
   end
  end
 end
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['font-oup']={
 version=1.001,
 comment="companion to font-ini.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
local next,type=next,type
local P,R,S=lpeg.P,lpeg.R,lpeg.S
local lpegmatch=lpeg.match
local insert,remove,copy,unpack=table.insert,table.remove,table.copy,table.unpack
local formatters=string.formatters
local sortedkeys=table.sortedkeys
local sortedhash=table.sortedhash
local tohash=table.tohash
local setmetatableindex=table.setmetatableindex
local report_error=logs.reporter("otf reader","error")
local report_markwidth=logs.reporter("otf reader","markwidth")
local report_cleanup=logs.reporter("otf reader","cleanup")
local report_optimizations=logs.reporter("otf reader","merges")
local report_unicodes=logs.reporter("otf reader","unicodes")
local trace_markwidth=false  trackers.register("otf.markwidth",function(v) trace_markwidth=v end)
local trace_cleanup=false  trackers.register("otf.cleanups",function(v) trace_cleanups=v end)
local trace_optimizations=false  trackers.register("otf.optimizations",function(v) trace_optimizations=v end)
local trace_unicodes=false  trackers.register("otf.unicodes",function(v) trace_unicodes=v end)
local readers=fonts.handlers.otf.readers
local privateoffset=fonts.constructors and fonts.constructors.privateoffset or 0xF0000 
local f_private=formatters["P%05X"]
local f_unicode=formatters["U%05X"]
local f_index=formatters["I%05X"]
local f_character_y=formatters["%C"]
local f_character_n=formatters["[ %C ]"]
local check_duplicates=true 
local check_soft_hyphen=true 
directives.register("otf.checksofthyphen",function(v)
 check_soft_hyphen=v
end)
local function replaced(list,index,replacement)
 if type(list)=="number" then
  return replacement
 elseif type(replacement)=="table" then
  local t={}
  local n=index-1
  for i=1,n do
   t[i]=list[i]
  end
  for i=1,#replacement do
   n=n+1
   t[n]=replacement[i]
  end
  for i=index+1,#list do
   n=n+1
   t[n]=list[i]
  end
 else
  list[index]=replacement
  return list
 end
end
local function unifyresources(fontdata,indices)
 local descriptions=fontdata.descriptions
 local resources=fontdata.resources
 if not descriptions or not resources then
  return
 end
 local nofindices=#indices
 local variants=fontdata.resources.variants
 if variants then
  for selector,unicodes in next,variants do
   for unicode,index in next,unicodes do
    unicodes[unicode]=indices[index]
   end
  end
 end
 local function remark(marks)
  if marks then
   local newmarks={}
   for k,v in next,marks do
    local u=indices[k]
    if u then
     newmarks[u]=v
    elseif trace_optimizations then
     report_optimizations("discarding mark %i",k)
    end
   end
   return newmarks
  end
 end
 local marks=resources.marks
 if marks then
  resources.marks=remark(marks)
 end
 local markclasses=resources.markclasses
 if markclasses then
  for class,marks in next,markclasses do
   markclasses[class]=remark(marks)
  end
 end
 local marksets=resources.marksets
 if marksets then
  for class,marks in next,marksets do
   marksets[class]=remark(marks)
  end
 end
 local done={}
 local duplicates=check_duplicates and resources.duplicates
 if duplicates and not next(duplicates) then
  duplicates=false
 end
 local function recover(cover) 
  for i=1,#cover do
   local c=cover[i]
   if not done[c] then
    local t={}
    for k,v in next,c do
     local ug=indices[k]
     if ug then
      t[ug]=v
     else
      report_error("case %i, bad index in unifying %s: %s of %s",1,"coverage",k,nofindices)
     end
    end
    cover[i]=t
    done[c]=d
   end
  end
 end
 local function recursed(c,kind) 
  local t={}
  for g,d in next,c do
   if type(d)=="table" then
    local ug=indices[g]
    if ug then
     t[ug]=recursed(d,kind)
    else
     report_error("case %i, bad index in unifying %s: %s of %s",1,kind,g,nofindices)
    end
   else
    t[g]=indices[d] 
   end
  end
  return t
 end
 local function unifythem(sequences)
  if not sequences then
   return
  end
  for i=1,#sequences do
   local sequence=sequences[i]
   local kind=sequence.type
   local steps=sequence.steps
   local features=sequence.features
   if steps then
    for i=1,#steps do
     local step=steps[i]
     if kind=="gsub_single" then
      local c=step.coverage
      if c then
       local t1=done[c]
       if not t1 then
        t1={}
        if duplicates then
         for g1,d1 in next,c do
          local ug1=indices[g1]
          if ug1 then
           local ud1=indices[d1]
           if ud1 then
            t1[ug1]=ud1
            local dg1=duplicates[ug1]
            if dg1 then
             for u in next,dg1 do
              t1[u]=ud1
             end
            end
           else
            report_error("case %i, bad index in unifying %s: %s of %s",3,kind,d1,nofindices)
           end
          else
           report_error("case %i, bad index in unifying %s: %s of %s",1,kind,g1,nofindices)
          end
         end
        else
         for g1,d1 in next,c do
          local ug1=indices[g1]
          if ug1 then
           t1[ug1]=indices[d1]
          else
           report_error("fuzzy case %i in unifying %s: %i",2,kind,g1)
          end
         end
        end
        done[c]=t1
       end
       step.coverage=t1
      end
     elseif kind=="gpos_pair" then
      local c=step.coverage
      if c then
       local t1=done[c]
       if not t1 then
        t1={}
        for g1,d1 in next,c do
         local ug1=indices[g1]
         if ug1 then
          local t2=done[d1]
          if not t2 then
           t2={}
           for g2,d2 in next,d1 do
            local ug2=indices[g2]
            if ug2 then
             t2[ug2]=d2
            else
             report_error("case %i, bad index in unifying %s: %s of %s",1,kind,g2,nofindices,nofindices)
            end
           end
           done[d1]=t2
          end
          t1[ug1]=t2
         else
          report_error("case %i, bad index in unifying %s: %s of %s",2,kind,g1,nofindices)
         end
        end
        done[c]=t1
       end
       step.coverage=t1
      end
     elseif kind=="gsub_ligature" then
      local c=step.coverage
      if c then
       step.coverage=recursed(c,kind)
      end
     elseif kind=="gsub_alternate" or kind=="gsub_multiple" then
      local c=step.coverage
      if c then
       local t1=done[c]
       if not t1 then
        t1={}
        if duplicates then
         for g1,d1 in next,c do
          for i=1,#d1 do
           local d1i=d1[i]
           local d1u=indices[d1i]
           if d1u then
            d1[i]=d1u
           else
            report_error("case %i, bad index in unifying %s: %s of %s",1,kind,i,d1i,nofindices)
           end
          end
          local ug1=indices[g1]
          if ug1 then
           t1[ug1]=d1
           local dg1=duplicates[ug1]
           if dg1 then
            for u in next,dg1 do
             t1[u]=copy(d1)
            end
           end
          else
           report_error("case %i, bad index in unifying %s: %s of %s",2,kind,g1,nofindices)
          end
         end
        else
         for g1,d1 in next,c do
          for i=1,#d1 do
           local d1i=d1[i]
           local d1u=indices[d1i]
           if d1u then
            d1[i]=d1u
           else
            report_error("case %i, bad index in unifying %s: %s of %s",2,kind,d1i,nofindices)
           end
          end
          t1[indices[g1]]=d1
         end
        end
        done[c]=t1
       end
       step.coverage=t1
      end
     elseif kind=="gpos_single" then
      local c=step.coverage
      if c then
       local t1=done[c]
       if not t1 then
        t1={}
        if duplicates then
         for g1,d1 in next,c do
          local ug1=indices[g1]
          if ug1 then
           t1[ug1]=d1
           local dg1=duplicates[ug1]
           if dg1 then
            for u in next,dg1 do
             t1[u]=d1
            end
           end
          else
           report_error("case %i, bad index in unifying %s: %s of %s",1,kind,g1,nofindices)
          end
         end
        else
         for g1,d1 in next,c do
          local ug1=indices[g1]
          if ug1 then
           t1[ug1]=d1
          else
           report_error("case %i, bad index in unifying %s: %s of %s",2,kind,g1,nofindices)
          end
         end
        end
        done[c]=t1
       end
       step.coverage=t1
      end
     elseif kind=="gpos_mark2base" or kind=="gpos_mark2mark" or kind=="gpos_mark2ligature" then
      local c=step.coverage
      if c then
       local t1=done[c]
       if not t1 then
        t1={}
        for g1,d1 in next,c do
         local ug1=indices[g1]
         if ug1 then
          t1[ug1]=d1
         else
          report_error("case %i, bad index in unifying %s: %s of %s",1,kind,g1,nofindices)
         end
        end
        done[c]=t1
       end
       step.coverage=t1
      end
      local c=step.baseclasses
      if c then
       local t1=done[c]
       if not t1 then
        for g1,d1 in next,c do
         local t2=done[d1]
         if not t2 then
          t2={}
          for g2,d2 in next,d1 do
           local ug2=indices[g2]
           if ug2 then
            t2[ug2]=d2
           else
            report_error("case %i, bad index in unifying %s: %s of %s",2,kind,g2,nofindices)
           end
          end
          done[d1]=t2
         end
         c[g1]=t2
        end
        done[c]=c
       end
      end
     elseif kind=="gpos_cursive" then
      local c=step.coverage
      if c then
       local t1=done[c]
       if not t1 then
        t1={}
        if duplicates then
         for g1,d1 in next,c do
          local ug1=indices[g1]
          if ug1 then
           t1[ug1]=d1
           local dg1=duplicates[ug1]
           if dg1 then
            for u in next,dg1 do
             t1[u]=copy(d1)
            end
           end
          else
           report_error("case %i, bad index in unifying %s: %s of %s",1,kind,g1,nofindices)
          end
         end
        else
         for g1,d1 in next,c do
          local ug1=indices[g1]
          if ug1 then
           t1[ug1]=d1
          else
           report_error("case %i, bad index in unifying %s: %s of %s",2,kind,g1,nofindices)
          end
         end
        end
        done[c]=t1
       end
       step.coverage=t1
      end
     end
     local rules=step.rules
     if rules then
      for i=1,#rules do
       local rule=rules[i]
       local before=rule.before   if before  then recover(before)  end
       local after=rule.after if after   then recover(after)   end
       local current=rule.current  if current then recover(current) end
       local replacements=rule.replacements
       if replacements then
        if not done[replacements] then
         local r={}
         for k,v in next,replacements do
          r[indices[k]]=indices[v]
         end
         rule.replacements=r
         done[replacements]=r
        end
       end
      end
     end
    end
   end
    end
 end
 unifythem(resources.sequences)
 unifythem(resources.sublookups)
end
local function copyduplicates(fontdata)
 if check_duplicates then
  local descriptions=fontdata.descriptions
  local resources=fontdata.resources
  local duplicates=resources.duplicates
  if check_soft_hyphen then
   local ds=descriptions[0xAD]
   if not ds or ds.width==0 then
    if ds then
     descriptions[0xAD]=nil
     if trace_unicodes then
      report_unicodes("patching soft hyphen")
     end
    else
     if trace_unicodes then
      report_unicodes("adding soft hyphen")
     end
    end
    if not duplicates then
     duplicates={}
     resources.duplicates=duplicates
    end
    local dh=duplicates[0x2D]
    if dh then
     dh[#dh+1]={ [0xAD]=true }
    else
     duplicates[0x2D]={ [0xAD]=true }
    end
   end
  end
  if duplicates then
     for u,d in next,duplicates do
    local du=descriptions[u]
    if du then
     local t={ f_character_y(u),"@",f_index(du.index),"->" }
     local n=0
     local m=25
     for u in next,d do
      if descriptions[u] then
       if n<m then
        t[n+4]=f_character_n(u)
       end
      else
       local c=copy(du)
       c.unicode=u 
       descriptions[u]=c
       if n<m then
        t[n+4]=f_character_y(u)
       end
      end
      n=n+1
     end
     if trace_unicodes then
      if n<=m then
       report_unicodes("%i : % t",n,t)
      else
       report_unicodes("%i : % t ...",n,t)
      end
     end
    else
    end
   end
  end
 end
end
local ignore={ 
 ["notdef"]=true,
 [".notdef"]=true,
 ["null"]=true,
 [".null"]=true,
 ["nonmarkingreturn"]=true,
}
local function checklookups(fontdata,missing,nofmissing)
 local descriptions=fontdata.descriptions
 local resources=fontdata.resources
 if missing and nofmissing and nofmissing<=0 then
  return
 end
 local singles={}
 local alternates={}
 local ligatures={}
 if not missing then
  missing={}
  nofmissing=0
  for u,d in next,descriptions do
   if not d.unicode then
    nofmissing=nofmissing+1
    missing[u]=true
   end
  end
 end
 local function collectthem(sequences)
  if not sequences then
   return
  end
  for i=1,#sequences do
   local sequence=sequences[i]
   local kind=sequence.type
   local steps=sequence.steps
   if steps then
    for i=1,#steps do
     local step=steps[i]
     if kind=="gsub_single" then
      local c=step.coverage
      if c then
       singles[#singles+1]=c
      end
     elseif kind=="gsub_alternate" then
      local c=step.coverage
      if c then
       alternates[#alternates+1]=c
      end
     elseif kind=="gsub_ligature" then
      local c=step.coverage
      if c then
       ligatures[#ligatures+1]=c
      end
     end
    end
   end
  end
 end
 collectthem(resources.sequences)
 collectthem(resources.sublookups)
 local loops=0
 while true do
  loops=loops+1
  local old=nofmissing
  for i=1,#singles do
   local c=singles[i]
   for g1,g2 in next,c do
    if missing[g1] then
     local u2=descriptions[g2].unicode
     if u2 then
      missing[g1]=false
      descriptions[g1].unicode=u2
      nofmissing=nofmissing-1
     end
    end
    if missing[g2] then
     local u1=descriptions[g1].unicode
     if u1 then
      missing[g2]=false
      descriptions[g2].unicode=u1
      nofmissing=nofmissing-1
     end
    end
   end
  end
  for i=1,#alternates do
   local c=alternates[i]
   for g1,d1 in next,c do
    if missing[g1] then
     for i=1,#d1 do
      local g2=d1[i]
      local u2=descriptions[g2].unicode
      if u2 then
       missing[g1]=false
       descriptions[g1].unicode=u2
       nofmissing=nofmissing-1
      end
     end
    end
    if not missing[g1] then
     for i=1,#d1 do
      local g2=d1[i]
      if missing[g2] then
       local u1=descriptions[g1].unicode
       if u1 then
        missing[g2]=false
        descriptions[g2].unicode=u1
        nofmissing=nofmissing-1
       end
      end
     end
    end
   end
  end
  if nofmissing<=0 then
   if trace_unicodes then
    report_unicodes("all missings done in %s loops",loops)
   end
   return
  elseif old==nofmissing then
   break
  end
 end
 local t,n 
 local function recursed(c)
  for g,d in next,c do
   if g~="ligature" then
    local u=descriptions[g].unicode
    if u then
     n=n+1
     t[n]=u
     recursed(d)
     n=n-1
    end
   elseif missing[d] then
    local l={}
    local m=0
    for i=1,n do
     local u=t[i]
     if type(u)=="table" then
      for i=1,#u do
       m=m+1
       l[m]=u[i]
      end
     else
      m=m+1
      l[m]=u
     end
    end
    missing[d]=false
    descriptions[d].unicode=l
    nofmissing=nofmissing-1
   end
  end
 end
 if nofmissing>0 then
  t={}
  n=0
  local loops=0
  while true do
   loops=loops+1
   local old=nofmissing
   for i=1,#ligatures do
    recursed(ligatures[i])
   end
   if nofmissing<=0 then
    if trace_unicodes then
     report_unicodes("all missings done in %s loops",loops)
    end
    return
   elseif old==nofmissing then
    break
   end
  end
  t=nil
  n=0
 end
 if trace_unicodes and nofmissing>0 then
  local done={}
  for i,r in next,missing do
   if r then
    local data=descriptions[i]
    local name=data and data.name or f_index(i)
    if not ignore[name] then
     done[name]=true
    end
   end
  end
  if next(done) then
   report_unicodes("not unicoded: % t",sortedkeys(done))
  end
 end
end
local firstprivate=fonts.privateoffsets and fonts.privateoffsets.textbase or 0xF0000
local puafirst=0xE000
local pualast=0xF8FF
local function unifymissing(fontdata)
 if not fonts.mappings then
  require("font-map")
  require("font-agl")
 end
 local unicodes={}
 local resources=fontdata.resources
 resources.unicodes=unicodes
 for unicode,d in next,fontdata.descriptions do
  if unicode<privateoffset then
   if unicode>=puafirst and unicode<=pualast then
   else
    local name=d.name
    if name then
     unicodes[name]=unicode
    end
   end
  else
  end
 end
 fonts.mappings.addtounicode(fontdata,fontdata.filename,checklookups)
 resources.unicodes=nil
end
local function unifyglyphs(fontdata,usenames)
 local private=fontdata.private or privateoffset
 local glyphs=fontdata.glyphs
 local indices={}
 local descriptions={}
 local names=usenames and {}
 local resources=fontdata.resources
 local zero=glyphs[0]
 local zerocode=zero.unicode
 if not zerocode then
  zerocode=private
  zero.unicode=zerocode
  private=private+1
 end
 descriptions[zerocode]=zero
 if names then
  local name=glyphs[0].name or f_private(zerocode)
  indices[0]=name
  names[name]=zerocode
 else
  indices[0]=zerocode
 end
 if names then
  for index=1,#glyphs do
   local glyph=glyphs[index]
   local unicode=glyph.unicode 
   if not unicode then
    unicode=private
    local name=glyph.name or f_private(unicode)
    indices[index]=name
    names[name]=unicode
    private=private+1
   elseif unicode>=firstprivate then
    unicode=private
    local name=glyph.name or f_private(unicode)
    indices[index]=name
    names[name]=unicode
    private=private+1
   elseif unicode>=puafirst and unicode<=pualast then
    local name=glyph.name or f_private(unicode)
    indices[index]=name
    names[name]=unicode
   elseif descriptions[unicode] then
    unicode=private
    local name=glyph.name or f_private(unicode)
    indices[index]=name
    names[name]=unicode
    private=private+1
   else
    local name=glyph.name or f_unicode(unicode)
    indices[index]=name
    names[name]=unicode
   end
   descriptions[unicode]=glyph
  end
 elseif trace_unicodes then
  for index=1,#glyphs do
   local glyph=glyphs[index]
   local unicode=glyph.unicode 
   if not unicode then
    unicode=private
    indices[index]=unicode
    private=private+1
   elseif unicode>=firstprivate then
    local name=glyph.name
    if name then
     report_unicodes("moving glyph %a indexed %05X from private %U to %U ",name,index,unicode,private)
    else
     report_unicodes("moving glyph indexed %05X from private %U to %U ",index,unicode,private)
    end
    unicode=private
    indices[index]=unicode
    private=private+1
   elseif unicode>=puafirst and unicode<=pualast then
    local name=glyph.name
    if name then
     report_unicodes("keeping private unicode %U for glyph %a indexed %05X",unicode,name,index)
    else
     report_unicodes("keeping private unicode %U for glyph indexed %05X",unicode,index)
    end
    indices[index]=unicode
   elseif descriptions[unicode] then
    local name=glyph.name
    if name then
     report_unicodes("assigning duplicate unicode %U to %U for glyph %a indexed %05X ",unicode,private,name,index)
    else
     report_unicodes("assigning duplicate unicode %U to %U for glyph indexed %05X ",unicode,private,index)
    end
    unicode=private
    indices[index]=unicode
    private=private+1
   else
    indices[index]=unicode
   end
   descriptions[unicode]=glyph
  end
 else
  for index=1,#glyphs do
   local glyph=glyphs[index]
   local unicode=glyph.unicode 
   if not unicode then
    unicode=private
    indices[index]=unicode
    private=private+1
   elseif unicode>=firstprivate then
    local name=glyph.name
    unicode=private
    indices[index]=unicode
    private=private+1
   elseif unicode>=puafirst and unicode<=pualast then
    local name=glyph.name
    indices[index]=unicode
   elseif descriptions[unicode] then
    local name=glyph.name
    unicode=private
    indices[index]=unicode
    private=private+1
   else
    indices[index]=unicode
   end
   descriptions[unicode]=glyph
  end
 end
 for index=1,#glyphs do
  local math=glyphs[index].math
  if math then
   local list=math.vparts
   if list then
    for i=1,#list do local l=list[i] l.glyph=indices[l.glyph] end
   end
   local list=math.hparts
   if list then
    for i=1,#list do local l=list[i] l.glyph=indices[l.glyph] end
   end
   local list=math.vvariants
   if list then
    for i=1,#list do list[i]=indices[list[i]] end
   end
   local list=math.hvariants
   if list then
    for i=1,#list do list[i]=indices[list[i]] end
   end
  end
 end
 local colorpalettes=resources.colorpalettes
 if colorpalettes then
  for index=1,#glyphs do
   local colors=glyphs[index].colors
   if colors then
    for i=1,#colors do
     local c=colors[i]
     c.slot=indices[c.slot]
    end
   end
  end
 end
 fontdata.private=private
 fontdata.glyphs=nil
 fontdata.names=names
 fontdata.descriptions=descriptions
 fontdata.hashmethod=hashmethod
 return indices,names
end
local p_crappyname  do
 local p_hex=R("af","AF","09")
 local p_digit=R("09")
 local p_done=S("._-")^0+P(-1)
 local p_alpha=R("az","AZ")
 local p_ALPHA=R("AZ")
 p_crappyname=(
  lpeg.utfchartabletopattern({ "uni","u" },true)*S("Xx_")^0*p_hex^1
+lpeg.utfchartabletopattern({ "identity","glyph","jamo" },true)*p_hex^1
+lpeg.utfchartabletopattern({ "index","afii" },true)*p_digit^1
+p_digit*p_hex^3+p_alpha*p_digit^1
+P("aj")*p_digit^1+P("eh_")*(p_digit^1+p_ALPHA*p_digit^1)+(1-P("_"))^1*P("_uni")*p_hex^1+P("_")*P(1)^1
 )*p_done
end
local forcekeep=false 
directives.register("otf.keepnames",function(v)
 report_cleanup("keeping weird glyph names, expect larger files and more memory usage")
 forcekeep=v
end)
local function stripredundant(fontdata)
 local descriptions=fontdata.descriptions
 if descriptions then
  local n=0
  local c=0
  if (not context and fonts.privateoffsets.keepnames) or forcekeep then
   for unicode,d in next,descriptions do
    if d.class=="base" then
     d.class=nil
     c=c+1
    end
   end
  else
   for unicode,d in next,descriptions do
    local name=d.name
    if name and lpegmatch(p_crappyname,name) then
     d.name=nil
     n=n+1
    end
    if d.class=="base" then
     d.class=nil
     c=c+1
    end
   end
  end
  if trace_cleanup then
   if n>0 then
    report_cleanup("%s bogus names removed (verbose unicode)",n)
   end
   if c>0 then
    report_cleanup("%s base class tags removed (default is base)",c)
   end
  end
 end
end
readers.stripredundant=stripredundant
function readers.getcomponents(fontdata) 
 local resources=fontdata.resources
 if resources then
  local sequences=resources.sequences
  if sequences then
   local collected={}
   for i=1,#sequences do
    local sequence=sequences[i]
    if sequence.type=="gsub_ligature" then
     local steps=sequence.steps
     if steps then
      local l={}
      local function traverse(p,k,v)
       if k=="ligature" then
        collected[v]={ unpack(l) }
       else
        insert(l,k)
        for k,vv in next,v do
         traverse(p,k,vv)
        end
        remove(l)
       end
      end
      for i=1,#steps do
       local c=steps[i].coverage
       if c then
        for k,v in next,c do
         traverse(k,k,v)
        end
       end
      end
     end
    end
   end
   if next(collected) then
    while true do
     local done=false
     for k,v in next,collected do
      for i=1,#v do
       local vi=v[i]
       if vi==k then
        collected[k]=nil
        break
       else
        local c=collected[vi]
        if c then
         done=true
         local t={}
         local n=i-1
         for j=1,n do
          t[j]=v[j]
         end
         for j=1,#c do
          n=n+1
          t[n]=c[j]
         end
         for j=i+1,#v do
          n=n+1
          t[n]=v[j]
         end
         collected[k]=t
         break
        end
       end
      end
     end
     if not done then
      break
     end
    end
    return collected
   end
  end
 end
end
readers.unifymissing=unifymissing
function readers.rehash(fontdata,hashmethod) 
 if not (fontdata and fontdata.glyphs) then
  return
 end
 if hashmethod=="indices" then
  fontdata.hashmethod="indices"
 elseif hashmethod=="names" then
  fontdata.hashmethod="names"
  local indices=unifyglyphs(fontdata,true)
  unifyresources(fontdata,indices)
  copyduplicates(fontdata)
  unifymissing(fontdata)
 else
  fontdata.hashmethod="unicodes"
  local indices=unifyglyphs(fontdata)
  unifyresources(fontdata,indices)
  copyduplicates(fontdata)
  unifymissing(fontdata)
  stripredundant(fontdata)
 end
end
function readers.checkhash(fontdata)
 local hashmethod=fontdata.hashmethod
 if hashmethod=="unicodes" then
  fontdata.names=nil 
 elseif hashmethod=="names" and fontdata.names then
  unifyresources(fontdata,fontdata.names)
  copyduplicates(fontdata)
  fontdata.hashmethod="unicodes"
  fontdata.names=nil 
 else
  readers.rehash(fontdata,"unicodes")
 end
end
function readers.addunicodetable(fontdata)
 local resources=fontdata.resources
 local unicodes=resources.unicodes
 if not unicodes then
  local descriptions=fontdata.descriptions
  if descriptions then
   unicodes={}
   resources.unicodes=unicodes
   for u,d in next,descriptions do
    local n=d.name
    if n then
     unicodes[n]=u
    end
   end
  end
 end
end
local concat,sort=table.concat,table.sort
local next,type,tostring=next,type,tostring
local criterium=1
local threshold=0
local trace_packing=false  trackers.register("otf.packing",function(v) trace_packing=v end)
local trace_loading=false  trackers.register("otf.loading",function(v) trace_loading=v end)
local report_otf=logs.reporter("fonts","otf loading")
local function tabstr_normal(t)
 local s={}
 local n=0
 for k,v in next,t do
  n=n+1
  if type(v)=="table" then
   s[n]=k..">"..tabstr_normal(v)
  elseif v==true then
   s[n]=k.."+" 
  elseif v then
   s[n]=k.."="..v
  else
   s[n]=k.."-" 
  end
 end
 if n==0 then
  return ""
 elseif n==1 then
  return s[1]
 else
  sort(s) 
  return concat(s,",")
 end
end
local function tabstr_flat(t)
 local s={}
 local n=0
 for k,v in next,t do
  n=n+1
  s[n]=k.."="..v
 end
 if n==0 then
  return ""
 elseif n==1 then
  return s[1]
 else
  sort(s) 
  return concat(s,",")
 end
end
local function tabstr_mixed(t) 
 local s={}
 local n=#t
 if n==0 then
  return ""
 elseif n==1 then
  local k=t[1]
  if k==true then
   return "++" 
  elseif k==false then
   return "--" 
  else
   return tostring(k) 
  end
 else
  for i=1,n do
   local k=t[i]
   if k==true then
    s[i]="++" 
   elseif k==false then
    s[i]="--" 
   else
    s[i]=k 
   end
  end
  return concat(s,",")
 end
end
local function tabstr_boolean(t)
 local s={}
 local n=0
 for k,v in next,t do
  n=n+1
  if v then
   s[n]=k.."+"
  else
   s[n]=k.."-"
  end
 end
 if n==0 then
  return ""
 elseif n==1 then
  return s[1]
 else
  sort(s) 
  return concat(s,",")
 end
end
function readers.pack(data)
 if data then
  local h,t,c={},{},{}
  local hh,tt,cc={},{},{}
  local nt,ntt=0,0
  local function pack_normal(v)
   local tag=tabstr_normal(v)
   local ht=h[tag]
   if ht then
    c[ht]=c[ht]+1
    return ht
   else
    nt=nt+1
    t[nt]=v
    h[tag]=nt
    c[nt]=1
    return nt
   end
  end
  local function pack_normal_cc(v)
   local tag=tabstr_normal(v)
   local ht=h[tag]
   if ht then
    c[ht]=c[ht]+1
    return ht
   else
    v[1]=0
    nt=nt+1
    t[nt]=v
    h[tag]=nt
    c[nt]=1
    return nt
   end
  end
  local function pack_flat(v)
   local tag=tabstr_flat(v)
   local ht=h[tag]
   if ht then
    c[ht]=c[ht]+1
    return ht
   else
    nt=nt+1
    t[nt]=v
    h[tag]=nt
    c[nt]=1
    return nt
   end
  end
  local function pack_indexed(v)
   local tag=concat(v," ")
   local ht=h[tag]
   if ht then
    c[ht]=c[ht]+1
    return ht
   else
    nt=nt+1
    t[nt]=v
    h[tag]=nt
    c[nt]=1
    return nt
   end
  end
  local function pack_mixed(v)
   local tag=tabstr_mixed(v)
   local ht=h[tag]
   if ht then
    c[ht]=c[ht]+1
    return ht
   else
    nt=nt+1
    t[nt]=v
    h[tag]=nt
    c[nt]=1
    return nt
   end
  end
  local function pack_boolean(v)
   local tag=tabstr_boolean(v)
   local ht=h[tag]
   if ht then
    c[ht]=c[ht]+1
    return ht
   else
    nt=nt+1
    t[nt]=v
    h[tag]=nt
    c[nt]=1
    return nt
   end
  end
  local function pack_final(v)
   if c[v]<=criterium then
    return t[v]
   else
    local hv=hh[v]
    if hv then
     return hv
    else
     ntt=ntt+1
     tt[ntt]=t[v]
     hh[v]=ntt
     cc[ntt]=c[v]
     return ntt
    end
   end
  end
  local function pack_final_cc(v)
   if c[v]<=criterium then
    return t[v]
   else
    local hv=hh[v]
    if hv then
     return hv
    else
     ntt=ntt+1
     tt[ntt]=t[v]
     hh[v]=ntt
     cc[ntt]=c[v]
     return ntt
    end
   end
  end
  local function success(stage,pass)
   if nt==0 then
    if trace_loading or trace_packing then
     report_otf("pack quality: nothing to pack")
    end
    return false
   elseif nt>=threshold then
    local one=0
    local two=0
    local rest=0
    if pass==1 then
     for k,v in next,c do
      if v==1 then
       one=one+1
      elseif v==2 then
       two=two+1
      else
       rest=rest+1
      end
     end
    else
     for k,v in next,cc do
      if v>20 then
       rest=rest+1
      elseif v>10 then
       two=two+1
      else
       one=one+1
      end
     end
     data.tables=tt
    end
    if trace_loading or trace_packing then
     report_otf("pack quality: stage %s, pass %s, %s packed, 1-10:%s, 11-20:%s, rest:%s (criterium: %s)",
      stage,pass,one+two+rest,one,two,rest,criterium)
    end
    return true
   else
    if trace_loading or trace_packing then
     report_otf("pack quality: stage %s, pass %s, %s packed, aborting pack (threshold: %s)",
      stage,pass,nt,threshold)
    end
    return false
   end
  end
  local function packers(pass)
   if pass==1 then
    return pack_normal,pack_indexed,pack_flat,pack_boolean,pack_mixed,pack_normal_cc
   else
    return pack_final,pack_final,pack_final,pack_final,pack_final,pack_final_cc
   end
  end
  local resources=data.resources
  local sequences=resources.sequences
  local sublookups=resources.sublookups
  local features=resources.features
  local palettes=resources.colorpalettes
  local variable=resources.variabledata
  local chardata=characters and characters.data
  local descriptions=data.descriptions or data.glyphs
  if not descriptions then
   return
  end
  for pass=1,2 do
   if trace_packing then
    report_otf("start packing: stage 1, pass %s",pass)
   end
   local pack_normal,pack_indexed,pack_flat,pack_boolean,pack_mixed,pack_normal_cc=packers(pass)
   for unicode,description in next,descriptions do
    local boundingbox=description.boundingbox
    if boundingbox then
     description.boundingbox=pack_indexed(boundingbox)
    end
    local math=description.math
    if math then
     local kerns=math.kerns
     if kerns then
      for tag,kern in next,kerns do
       kerns[tag]=pack_normal(kern)
      end
     end
    end
   end
   local function packthem(sequences)
    for i=1,#sequences do
     local sequence=sequences[i]
     local kind=sequence.type
     local steps=sequence.steps
     local order=sequence.order
     local features=sequence.features
     local flags=sequence.flags
     if steps then
      for i=1,#steps do
       local step=steps[i]
       if kind=="gpos_pair" then
        local c=step.coverage
        if c then
         if step.format~="pair" then
          for g1,d1 in next,c do
           c[g1]=pack_normal(d1)
          end
         elseif step.shared then
          local shared={}
          for g1,d1 in next,c do
           for g2,d2 in next,d1 do
            if not shared[d2] then
             local f=d2[1] if f and f~=true then d2[1]=pack_indexed(f) end
             local s=d2[2] if s and s~=true then d2[2]=pack_indexed(s) end
             shared[d2]=true
            end
           end
          end
          if pass==2 then
           step.shared=nil 
          end
         else
          for g1,d1 in next,c do
           for g2,d2 in next,d1 do
            local f=d2[1] if f and f~=true then d2[1]=pack_indexed(f) end
            local s=d2[2] if s and s~=true then d2[2]=pack_indexed(s) end
           end
          end
         end
        end
       elseif kind=="gpos_single" then
        local c=step.coverage
        if c then
         if step.format=="single" then
          for g1,d1 in next,c do
           if d1 and d1~=true then
            c[g1]=pack_indexed(d1)
           end
          end
         else
          step.coverage=pack_normal(c)
         end
        end
       elseif kind=="gpos_cursive" then
        local c=step.coverage
        if c then
         for g1,d1 in next,c do
          local f=d1[2] if f then d1[2]=pack_indexed(f) end
          local s=d1[3] if s then d1[3]=pack_indexed(s) end
         end
        end
       elseif kind=="gpos_mark2base" or kind=="gpos_mark2mark" then
        local c=step.baseclasses
        if c then
         for g1,d1 in next,c do
          for g2,d2 in next,d1 do
           d1[g2]=pack_indexed(d2)
          end
         end
        end
        local c=step.coverage
        if c then
         for g1,d1 in next,c do
          d1[2]=pack_indexed(d1[2])
         end
        end
       elseif kind=="gpos_mark2ligature" then
        local c=step.baseclasses
        if c then
         for g1,d1 in next,c do
          for g2,d2 in next,d1 do
           for g3,d3 in next,d2 do
            d2[g3]=pack_indexed(d3)
           end
          end
         end
        end
        local c=step.coverage
        if c then
         for g1,d1 in next,c do
          d1[2]=pack_indexed(d1[2])
         end
        end
       end
       local rules=step.rules
       if rules then
        for i=1,#rules do
         local rule=rules[i]
         local r=rule.before    if r then for i=1,#r do r[i]=pack_boolean(r[i]) end end
         local r=rule.after  if r then for i=1,#r do r[i]=pack_boolean(r[i]) end end
         local r=rule.current   if r then for i=1,#r do r[i]=pack_boolean(r[i]) end end
         local r=rule.replacements if r then rule.replacements=pack_flat   (r) end
        end
       end
      end
     end
     if order then
      sequence.order=pack_indexed(order)
     end
     if features then
      for script,feature in next,features do
       features[script]=pack_normal(feature)
      end
     end
     if flags then
      sequence.flags=pack_normal(flags)
     end
      end
   end
   if sequences then
    packthem(sequences)
   end
   if sublookups then
    packthem(sublookups)
   end
   if features then
    for k,list in next,features do
     for feature,spec in next,list do
      list[feature]=pack_normal(spec)
     end
    end
   end
   if palettes then
    for i=1,#palettes do
     local p=palettes[i]
     for j=1,#p do
      p[j]=pack_indexed(p[j])
     end
    end
   end
   if variable then
    local instances=variable.instances
    if instances then
     for i=1,#instances do
      local v=instances[i].values
      for j=1,#v do
       v[j]=pack_normal(v[j])
      end
     end
    end
    local function packdeltas(main)
     if main then
      local deltas=main.deltas
      if deltas then
       for i=1,#deltas do
        local di=deltas[i]
        local d=di.deltas
        for j=1,#d do
         d[j]=pack_indexed(d[j])
        end
        di.regions=pack_indexed(di.regions)
       end
      end
      local regions=main.regions
      if regions then
       for i=1,#regions do
        local r=regions[i]
        for j=1,#r do
         r[j]=pack_normal(r[j])
        end
       end
      end
     end
    end
    packdeltas(variable.global)
    packdeltas(variable.horizontal)
    packdeltas(variable.vertical)
    packdeltas(variable.metrics)
   end
   if not success(1,pass) then
    return
   end
  end
  if nt>0 then
   for pass=1,2 do
    if trace_packing then
     report_otf("start packing: stage 2, pass %s",pass)
    end
    local pack_normal,pack_indexed,pack_flat,pack_boolean,pack_mixed,pack_normal_cc=packers(pass)
    for unicode,description in next,descriptions do
     local math=description.math
     if math then
      local kerns=math.kerns
      if kerns then
       math.kerns=pack_normal(kerns)
      end
     end
    end
    local function packthem(sequences)
     for i=1,#sequences do
      local sequence=sequences[i]
      local kind=sequence.type
      local steps=sequence.steps
      local features=sequence.features
      if steps then
       for i=1,#steps do
        local step=steps[i]
        if kind=="gpos_pair" then
         local c=step.coverage
         if c then
          if step.format=="pair" then
           for g1,d1 in next,c do
            for g2,d2 in next,d1 do
             d1[g2]=pack_normal(d2)
            end
           end
          end
         end
        elseif kind=="gpos_mark2ligature" then
         local c=step.baseclasses 
         if c then
          for g1,d1 in next,c do
           for g2,d2 in next,d1 do
            d1[g2]=pack_normal(d2)
           end
          end
         end
        end
        local rules=step.rules
        if rules then
         for i=1,#rules do
          local rule=rules[i]
          local r=rule.before  if r then rule.before=pack_normal(r) end
          local r=rule.after   if r then rule.after=pack_normal(r) end
          local r=rule.current if r then rule.current=pack_normal(r) end
         end
        end
       end
      end
      if features then
       sequence.features=pack_normal(features)
      end
       end
    end
    if sequences then
     packthem(sequences)
    end
    if sublookups then
     packthem(sublookups)
    end
    if variable then
     local function unpackdeltas(main)
      if main then
       local regions=main.regions
       if regions then
        main.regions=pack_normal(regions)
       end
      end
     end
     unpackdeltas(variable.global)
     unpackdeltas(variable.horizontal)
     unpackdeltas(variable.vertical)
     unpackdeltas(variable.metrics)
    end
   end
   for pass=1,2 do
    if trace_packing then
     report_otf("start packing: stage 3, pass %s",pass)
    end
    local pack_normal,pack_indexed,pack_flat,pack_boolean,pack_mixed,pack_normal_cc=packers(pass)
    local function packthem(sequences)
     for i=1,#sequences do
      local sequence=sequences[i]
      local kind=sequence.type
      local steps=sequence.steps
      local features=sequence.features
      if steps then
       for i=1,#steps do
        local step=steps[i]
        if kind=="gpos_pair" then
         local c=step.coverage
         if c then
          if step.format=="pair" then
           for g1,d1 in next,c do
            c[g1]=pack_normal(d1)
           end
          end
         end
        elseif kind=="gpos_cursive" then
         local c=step.coverage
         if c then
          for g1,d1 in next,c do
           c[g1]=pack_normal_cc(d1)
          end
         end
        end
       end
      end
     end
    end
    if sequences then
     packthem(sequences)
    end
    if sublookups then
     packthem(sublookups)
    end
   end
  end
 end
end
local unpacked_mt={
 __index=function(t,k)
   t[k]=false
   return k 
  end
}
function readers.unpack(data)
 if data then
  local tables=data.tables
  if tables then
   local resources=data.resources
   local descriptions=data.descriptions or data.glyphs
   local sequences=resources.sequences
   local sublookups=resources.sublookups
   local features=resources.features
   local palettes=resources.colorpalettes
   local variable=resources.variabledata
   local unpacked={}
   setmetatable(unpacked,unpacked_mt)
   for unicode,description in next,descriptions do
    local tv=tables[description.boundingbox]
    if tv then
     description.boundingbox=tv
    end
    local math=description.math
    if math then
     local kerns=math.kerns
     if kerns then
      local tm=tables[kerns]
      if tm then
       math.kerns=tm
       kerns=unpacked[tm]
      end
      if kerns then
       for k,kern in next,kerns do
        local tv=tables[kern]
        if tv then
         kerns[k]=tv
        end
       end
      end
     end
    end
   end
   local function unpackthem(sequences)
    for i=1,#sequences do
     local sequence=sequences[i]
     local kind=sequence.type
     local steps=sequence.steps
     local order=sequence.order
     local features=sequence.features
     local flags=sequence.flags
     local markclass=sequence.markclass
     if features then
      local tv=tables[features]
      if tv then
       sequence.features=tv
       features=tv
      end
      for script,feature in next,features do
       local tv=tables[feature]
       if tv then
        features[script]=tv
       end
      end
     end
     if steps then
      for i=1,#steps do
       local step=steps[i]
       if kind=="gpos_pair" then
        local c=step.coverage
        if c then
         if step.format=="pair" then
          for g1,d1 in next,c do
           local tv=tables[d1]
           if tv then
            c[g1]=tv
            d1=tv
           end
           for g2,d2 in next,d1 do
            local tv=tables[d2]
            if tv then
             d1[g2]=tv
             d2=tv
            end
            local f=tables[d2[1]] if f then d2[1]=f end
            local s=tables[d2[2]] if s then d2[2]=s end
           end
          end
         else
          for g1,d1 in next,c do
           local tv=tables[d1]
           if tv then
            c[g1]=tv
           end
          end
         end
        end
       elseif kind=="gpos_single" then
        local c=step.coverage
        if c then
         if step.format=="single" then
          for g1,d1 in next,c do
           local tv=tables[d1]
           if tv then
            c[g1]=tv
           end
          end
         else
          local tv=tables[c]
          if tv then
           step.coverage=tv
          end
         end
        end
       elseif kind=="gpos_cursive" then
        local c=step.coverage
        if c then
         for g1,d1 in next,c do
          local tv=tables[d1]
          if tv then
           d1=tv
           c[g1]=d1
          end
          local f=tables[d1[2]] if f then d1[2]=f end
          local s=tables[d1[3]] if s then d1[3]=s end
         end
        end
       elseif kind=="gpos_mark2base" or kind=="gpos_mark2mark" then
        local c=step.baseclasses
        if c then
         for g1,d1 in next,c do
          for g2,d2 in next,d1 do
           local tv=tables[d2]
           if tv then
            d1[g2]=tv
           end
          end
         end
        end
        local c=step.coverage
        if c then
         for g1,d1 in next,c do
          local tv=tables[d1[2]]
          if tv then
           d1[2]=tv
          end
         end
        end
       elseif kind=="gpos_mark2ligature" then
        local c=step.baseclasses
        if c then
         for g1,d1 in next,c do
          for g2,d2 in next,d1 do
           local tv=tables[d2] 
           if tv then
            d2=tv
            d1[g2]=d2
           end
           for g3,d3 in next,d2 do
            local tv=tables[d2[g3]]
            if tv then
             d2[g3]=tv
            end
           end
          end
         end
        end
        local c=step.coverage
        if c then
         for g1,d1 in next,c do
          local tv=tables[d1[2]]
          if tv then
           d1[2]=tv
          end
         end
        end
       end
       local rules=step.rules
       if rules then
        for i=1,#rules do
         local rule=rules[i]
         local before=rule.before
         if before then
          local tv=tables[before]
          if tv then
           rule.before=tv
           before=tv
          end
          for i=1,#before do
           local tv=tables[before[i]]
           if tv then
            before[i]=tv
           end
          end
         end
         local after=rule.after
         if after then
          local tv=tables[after]
          if tv then
           rule.after=tv
           after=tv
          end
          for i=1,#after do
           local tv=tables[after[i]]
           if tv then
            after[i]=tv
           end
          end
         end
         local current=rule.current
         if current then
          local tv=tables[current]
          if tv then
           rule.current=tv
           current=tv
          end
          for i=1,#current do
           local tv=tables[current[i]]
           if tv then
            current[i]=tv
           end
          end
         end
         local replacements=rule.replacements
         if replacements then
          local tv=tables[replacements]
          if tv then
           rule.replacements=tv
          end
         end
        end
       end
      end
     end
     if order then
      local tv=tables[order]
      if tv then
       sequence.order=tv
      end
     end
     if flags then
      local tv=tables[flags]
      if tv then
       sequence.flags=tv
      end
     end
      end
   end
   if sequences then
    unpackthem(sequences)
   end
   if sublookups then
    unpackthem(sublookups)
   end
   if features then
    for k,list in next,features do
     for feature,spec in next,list do
      local tv=tables[spec]
      if tv then
       list[feature]=tv
      end
     end
    end
   end
   if palettes then
    for i=1,#palettes do
     local p=palettes[i]
     for j=1,#p do
      local tv=tables[p[j]]
      if tv then
       p[j]=tv
      end
     end
    end
   end
   if variable then
    local instances=variable.instances
    if instances then
     for i=1,#instances do
      local v=instances[i].values
      for j=1,#v do
       local tv=tables[v[j]]
       if tv then
        v[j]=tv
       end
      end
     end
    end
    local function unpackdeltas(main)
     if main then
      local deltas=main.deltas
      if deltas then
       for i=1,#deltas do
        local di=deltas[i]
        local d=di.deltas
        local r=di.regions
        for j=1,#d do
         local tv=tables[d[j]]
         if tv then
          d[j]=tv
         end
        end
        local tv=di.regions
        if tv then
         di.regions=tv
        end
       end
      end
      local regions=main.regions
      if regions then
       local tv=tables[regions]
       if tv then
        main.regions=tv
        regions=tv
       end
       for i=1,#regions do
        local r=regions[i]
        for j=1,#r do
         local tv=tables[r[j]]
         if tv then
          r[j]=tv
         end
        end
       end
      end
     end
    end
    unpackdeltas(variable.global)
    unpackdeltas(variable.horizontal)
    unpackdeltas(variable.vertical)
    unpackdeltas(variable.metrics)
   end
   data.tables=nil
  end
 end
end
local mt={
 __index=function(t,k) 
  if k=="height" then
   local ht=t.boundingbox[4]
   return ht<0 and 0 or ht
  elseif k=="depth" then
   local dp=-t.boundingbox[2]
   return dp<0 and 0 or dp
  elseif k=="width" then
   return 0
  elseif k=="name" then 
   return forcenotdef and ".notdef"
  end
 end
}
local function sameformat(sequence,steps,first,nofsteps,kind)
 return true
end
local function mergesteps_1(lookup,strict)
 local steps=lookup.steps
 local nofsteps=lookup.nofsteps
 local first=steps[1]
 if strict then
  local f=first.format
  for i=2,nofsteps do
   if steps[i].format~=f then
    if trace_optimizations then
     report_optimizations("not merging %a steps of %a lookup %a, different formats",nofsteps,lookup.type,lookup.name)
    end
    return 0
   end
  end
 end
 if trace_optimizations then
  report_optimizations("merging %a steps of %a lookup %a",nofsteps,lookup.type,lookup.name)
 end
 local target=first.coverage
 for i=2,nofsteps do
  local c=steps[i].coverage
  if c then
   for k,v in next,c do
    if not target[k] then
     target[k]=v
    end
   end
  end
 end
 lookup.nofsteps=1
 lookup.merged=true
 lookup.steps={ first }
 return nofsteps-1
end
local function mergesteps_2(lookup)
 local steps=lookup.steps
 local nofsteps=lookup.nofsteps
 local first=steps[1]
 if strict then
  local f=first.format
  for i=2,nofsteps do
   if steps[i].format~=f then
    if trace_optimizations then
     report_optimizations("not merging %a steps of %a lookup %a, different formats",nofsteps,lookup.type,lookup.name)
    end
    return 0
   end
  end
 end
 if trace_optimizations then
  report_optimizations("merging %a steps of %a lookup %a",nofsteps,lookup.type,lookup.name)
 end
 local target=first.coverage
 for i=2,nofsteps do
  local c=steps[i].coverage
  if c then
   for k,v in next,c do
    local tk=target[k]
    if tk then
     for kk,vv in next,v do
      if tk[kk]==nil then
       tk[kk]=vv
      end
     end
    else
     target[k]=v
    end
   end
  end
 end
 lookup.nofsteps=1
 lookup.merged=true
 lookup.steps={ first }
 return nofsteps-1
end
local function mergesteps_3(lookup,strict) 
 local steps=lookup.steps
 local nofsteps=lookup.nofsteps
 if trace_optimizations then
  report_optimizations("merging %a steps of %a lookup %a",nofsteps,lookup.type,lookup.name)
 end
 local coverage={}
 for i=1,nofsteps do
  local c=steps[i].coverage
  if c then
   for k,v in next,c do
    local tk=coverage[k] 
    if tk then
     if trace_optimizations then
      report_optimizations("quitting merge due to multiple checks")
     end
     return nofsteps
    else
     coverage[k]=v
    end
   end
  end
 end
 local first=steps[1]
 local baseclasses={} 
 for i=1,nofsteps do
  local offset=i*10  
  local step=steps[i]
  for k,v in sortedhash(step.baseclasses) do
   baseclasses[offset+k]=v
  end
  for k,v in next,step.coverage do
   v[1]=offset+v[1]
  end
 end
 first.baseclasses=baseclasses
 first.coverage=coverage
 lookup.nofsteps=1
 lookup.merged=true
 lookup.steps={ first }
 return nofsteps-1
end
local function nested(old,new)
 for k,v in next,old do
  if k=="ligature" then
   if not new.ligature then
    new.ligature=v
   end
  else
   local n=new[k]
   if n then
    nested(v,n)
   else
    new[k]=v
   end
  end
 end
end
local function mergesteps_4(lookup) 
 local steps=lookup.steps
 local nofsteps=lookup.nofsteps
 local first=steps[1]
 if trace_optimizations then
  report_optimizations("merging %a steps of %a lookup %a",nofsteps,lookup.type,lookup.name)
 end
 local target=first.coverage
 for i=2,nofsteps do
  local c=steps[i].coverage
  if c then
   for k,v in next,c do
    local tk=target[k]
    if tk then
     nested(v,tk)
    else
     target[k]=v
    end
   end
  end
 end
 lookup.nofsteps=1
 lookup.steps={ first }
 return nofsteps-1
end
local function mergesteps_5(lookup) 
 local steps=lookup.steps
 local nofsteps=lookup.nofsteps
 local first=steps[1]
 if trace_optimizations then
  report_optimizations("merging %a steps of %a lookup %a",nofsteps,lookup.type,lookup.name)
 end
 local target=first.coverage
 local hash=nil
 for k,v in next,target do
  hash=v[1]
  break
 end
 for i=2,nofsteps do
  local c=steps[i].coverage
  if c then
   for k,v in next,c do
    local tk=target[k]
    if tk then
     if not tk[2] then
      tk[2]=v[2]
     end
     if not tk[3] then
      tk[3]=v[3]
     end
    else
     target[k]=v
     v[1]=hash
    end
   end
  end
 end
 lookup.nofsteps=1
 lookup.merged=true
 lookup.steps={ first }
 return nofsteps-1
end
local function checkkerns(lookup)
 local steps=lookup.steps
 local nofsteps=lookup.nofsteps
 local kerned=0
 for i=1,nofsteps do
  local step=steps[i]
  if step.format=="pair" then
   local coverage=step.coverage
   local kerns=true
   for g1,d1 in next,coverage do
    if d1==true then
    elseif not d1 then
    elseif d1[1]~=0 or d1[2]~=0 or d1[4]~=0 then
     kerns=false
     break
    end
   end
   if kerns then
    if trace_optimizations then
     report_optimizations("turning pairs of step %a of %a lookup %a into kerns",i,lookup.type,lookup.name)
    end
    local c={}
    for g1,d1 in next,coverage do
     if d1 and d1~=true then
      c[g1]=d1[3]
     end
    end
    step.coverage=c
    step.format="move"
    kerned=kerned+1
   end
  end
 end
 return kerned
end
local function checkpairs(lookup)
 local steps=lookup.steps
 local nofsteps=lookup.nofsteps
 local kerned=0
 local function onlykerns(step)
  local coverage=step.coverage
  for g1,d1 in next,coverage do
   for g2,d2 in next,d1 do
    if d2[2] then
     return false
    else
     local v=d2[1]
     if v==true then
     elseif v and (v[1]~=0 or v[2]~=0 or v[4]~=0) then
      return false
     end
    end
   end
  end
  return coverage
 end
 for i=1,nofsteps do
  local step=steps[i]
  if step.format=="pair" then
   local coverage=onlykerns(step)
   if coverage then
    if trace_optimizations then
     report_optimizations("turning pairs of step %a of %a lookup %a into kerns",i,lookup.type,lookup.name)
    end
    for g1,d1 in next,coverage do
     local d={}
     for g2,d2 in next,d1 do
      local v=d2[1]
      if v==true then
      elseif v then
       d[g2]=v[3] 
      end
     end
     coverage[g1]=d
    end
    step.format="move"
    kerned=kerned+1
   end
  end
 end
 return kerned
end
local compact_pairs=true
local compact_singles=true
local merge_pairs=true
local merge_singles=true
local merge_substitutions=true
local merge_alternates=true
local merge_multiples=true
local merge_ligatures=true
local merge_cursives=true
local merge_marks=true
directives.register("otf.compact.pairs",function(v) compact_pairs=v end)
directives.register("otf.compact.singles",function(v) compact_singles=v end)
directives.register("otf.merge.pairs",function(v) merge_pairs=v end)
directives.register("otf.merge.singles",function(v) merge_singles=v end)
directives.register("otf.merge.substitutions",function(v) merge_substitutions=v end)
directives.register("otf.merge.alternates",function(v) merge_alternates=v end)
directives.register("otf.merge.multiples",function(v) merge_multiples=v end)
directives.register("otf.merge.ligatures",function(v) merge_ligatures=v end)
directives.register("otf.merge.cursives",function(v) merge_cursives=v end)
directives.register("otf.merge.marks",function(v) merge_marks=v end)
function readers.compact(data)
 if not data or data.compacted then
  return
 else
  data.compacted=true
 end
 local resources=data.resources
 local merged=0
 local kerned=0
 local allsteps=0
 local function compact(what)
  local lookups=resources[what]
  if lookups then
   for i=1,#lookups do
    local lookup=lookups[i]
    local nofsteps=lookup.nofsteps
    local kind=lookup.type
    allsteps=allsteps+nofsteps
    if nofsteps>1 then
     local merg=merged
     if kind=="gsub_single" then
      if merge_substitutions then
       merged=merged+mergesteps_1(lookup)
      end
     elseif kind=="gsub_alternate" then
      if merge_alternates then
       merged=merged+mergesteps_1(lookup)
      end
     elseif kind=="gsub_multiple" then
      if merge_multiples then
       merged=merged+mergesteps_1(lookup)
      end
     elseif kind=="gsub_ligature" then
      if merge_ligatures then
       merged=merged+mergesteps_4(lookup)
      end
     elseif kind=="gpos_single" then
      if merge_singles then
       merged=merged+mergesteps_1(lookup,true)
      end
      if compact_singles then
       kerned=kerned+checkkerns(lookup)
      end
     elseif kind=="gpos_pair" then
      if merge_pairs then
       merged=merged+mergesteps_2(lookup)
      end
      if compact_pairs then
       kerned=kerned+checkpairs(lookup)
      end
     elseif kind=="gpos_cursive" then
      if merge_cursives then
       merged=merged+mergesteps_5(lookup)
      end
     elseif kind=="gpos_mark2mark" or kind=="gpos_mark2base" or kind=="gpos_mark2ligature" then
      if merge_marks then
       merged=merged+mergesteps_3(lookup)
      end
     end
     if merg~=merged then
      lookup.merged=true
     end
    elseif nofsteps==1 then
     local kern=kerned
     if kind=="gpos_single" then
      if compact_singles then
       kerned=kerned+checkkerns(lookup)
      end
     elseif kind=="gpos_pair" then
      if compact_pairs then
       kerned=kerned+checkpairs(lookup)
      end
     end
     if kern~=kerned then
     end
    end
   end
  elseif trace_optimizations then
   report_optimizations("no lookups in %a",what)
  end
 end
 compact("sequences")
 compact("sublookups")
 if trace_optimizations then
  if merged>0 then
   report_optimizations("%i steps of %i removed due to merging",merged,allsteps)
  end
  if kerned>0 then
   report_optimizations("%i steps of %i steps turned from pairs into kerns",kerned,allsteps)
  end
 end
end
local function mergesteps(t,k)
 if k=="merged" then
  local merged={}
  for i=1,#t do
   local step=t[i]
   local coverage=step.coverage
   for k in next,coverage do
    local m=merged[k]
    if m then
     m[2]=i
    else
     merged[k]={ i,i }
    end
   end
  end
  t.merged=merged
  return merged
 end
end
local function checkmerge(sequence)
 local steps=sequence.steps
 if steps then
  setmetatableindex(steps,mergesteps)
 end
end
local function checkflags(sequence,resources)
 if not sequence.skiphash then
  local flags=sequence.flags
  if flags then
   local skipmark=flags[1]
   local skipligature=flags[2]
   local skipbase=flags[3]
   local markclass=sequence.markclass
   local skipsome=skipmark or skipligature or skipbase or markclass or false
   if skipsome then
    sequence.skiphash=setmetatableindex(function(t,k)
     local c=resources.classes[k] 
     local v=c==skipmark
         or (markclass and c=="mark" and not markclass[k])
         or c==skipligature
         or c==skipbase
         or false
     t[k]=v
     return v
    end)
   else
    sequence.skiphash=false
   end
  else
   sequence.skiphash=false
  end
 end
end
local function checksteps(sequence)
 local steps=sequence.steps
 if steps then
  for i=1,#steps do
   steps[i].index=i
  end
 end
end
if fonts.helpers then
 fonts.helpers.checkmerge=checkmerge
 fonts.helpers.checkflags=checkflags
 fonts.helpers.checksteps=checksteps 
end
function readers.expand(data)
 if not data or data.expanded then
  return
 else
  data.expanded=true
 end
 local resources=data.resources
 local sublookups=resources.sublookups
 local sequences=resources.sequences 
 local markclasses=resources.markclasses
 local descriptions=data.descriptions
 if descriptions then
  local defaultwidth=resources.defaultwidth  or 0
  local defaultheight=resources.defaultheight or 0
  local defaultdepth=resources.defaultdepth  or 0
  local basename=trace_markwidth and file.basename(resources.filename)
  for u,d in next,descriptions do
   local bb=d.boundingbox
   local wd=d.width
   if not wd then
    d.width=defaultwidth
   elseif trace_markwidth and wd~=0 and d.class=="mark" then
    report_markwidth("mark %a with width %b found in %a",d.name or "<noname>",wd,basename)
   end
   if bb then
    local ht=bb[4]
    local dp=-bb[2]
    if ht==0 or ht<0 then
    else
     d.height=ht
    end
    if dp==0 or dp<0 then
    else
     d.depth=dp
    end
   end
  end
 end
 local function expandlookups(sequences)
  if sequences then
   for i=1,#sequences do
    local sequence=sequences[i]
    local steps=sequence.steps
    if steps then
     local nofsteps=sequence.nofsteps
     local kind=sequence.type
     local markclass=sequence.markclass
     if markclass then
      if not markclasses then
       report_warning("missing markclasses")
       sequence.markclass=false
      else
       sequence.markclass=markclasses[markclass]
      end
     end
     for i=1,nofsteps do
      local step=steps[i]
      local baseclasses=step.baseclasses
      if baseclasses then
       local coverage=step.coverage
       for k,v in next,coverage do
        v[1]=baseclasses[v[1]] 
       end
      elseif kind=="gpos_cursive" then
       local coverage=step.coverage
       for k,v in next,coverage do
        v[1]=coverage 
       end
      end
      local rules=step.rules
      if rules then
       local rulehash={ n=0 } 
       local rulesize=0
       local coverage={}
       local lookuptype=sequence.type
       local nofrules=#rules
       step.coverage=coverage 
       for currentrule=1,nofrules do
        local rule=rules[currentrule]
        local current=rule.current
        local before=rule.before
        local after=rule.after
        local replacements=rule.replacements or false
        local sequence={}
        local nofsequences=0
        if before then
         for n=1,#before do
          nofsequences=nofsequences+1
          sequence[nofsequences]=before[n]
         end
        end
        local start=nofsequences+1
        for n=1,#current do
         nofsequences=nofsequences+1
         sequence[nofsequences]=current[n]
        end
        local stop=nofsequences
        if after then
         for n=1,#after do
          nofsequences=nofsequences+1
          sequence[nofsequences]=after[n]
         end
        end
        local lookups=rule.lookups or false
        local subtype=nil
        if lookups then
         for i=1,#lookups do
          local lookups=lookups[i]
          if lookups then
           for k,v in next,lookups do 
            local lookup=sublookups[v]
            if lookup then
             lookups[k]=lookup
             if not subtype then
              subtype=lookup.type
             end
            else
            end
           end
          end
         end
        end
        if sequence[1] then 
         sequence.n=#sequence 
         local ruledata={
          currentrule,
          lookuptype,
          sequence,
          start,
          stop,
          lookups,
          replacements,
          subtype,
         }
         rulesize=rulesize+1
         rulehash[rulesize]=ruledata
         rulehash.n=rulesize
         if true then 
          for unic in next,sequence[start] do
           local cu=coverage[unic]
           if cu then
            local n=#cu+1
            cu[n]=ruledata
            cu.n=n
           else
            coverage[unic]={ ruledata,n=1 }
           end
          end
         else
          for unic in next,sequence[start] do
           local cu=coverage[unic]
           if cu then
           else
            coverage[unic]=rulehash
           end
          end
         end
        end
       end
      end
     end
     checkmerge(sequence)
     checkflags(sequence,resources)
     checksteps(sequence)
    end
   end
  end
 end
 expandlookups(sequences)
 expandlookups(sublookups)
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['font-otl']={
 version=1.001,
 comment="companion to font-ini.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files",
}
local lower=string.lower
local type,next,tonumber,tostring,unpack=type,next,tonumber,tostring,unpack
local abs=math.abs
local derivetable=table.derive
local formatters=string.formatters
local setmetatableindex=table.setmetatableindex
local allocate=utilities.storage.allocate
local registertracker=trackers.register
local registerdirective=directives.register
local starttiming=statistics.starttiming
local stoptiming=statistics.stoptiming
local elapsedtime=statistics.elapsedtime
local findbinfile=resolvers.findbinfile
local trace_loading=false  registertracker("otf.loading",function(v) trace_loading=v end)
local trace_features=false  registertracker("otf.features",function(v) trace_features=v end)
local trace_defining=false  registertracker("fonts.defining",function(v) trace_defining=v end)
local report_otf=logs.reporter("fonts","otf loading")
local fonts=fonts
local otf=fonts.handlers.otf
otf.version=3.111 
otf.cache=containers.define("fonts","otl",otf.version,true)
otf.svgcache=containers.define("fonts","svg",otf.version,true)
otf.pngcache=containers.define("fonts","png",otf.version,true)
otf.pdfcache=containers.define("fonts","pdf",otf.version,true)
otf.mpscache=containers.define("fonts","mps",otf.version,true)
otf.svgenabled=false
otf.pngenabled=false
local otfreaders=otf.readers
local hashes=fonts.hashes
local definers=fonts.definers
local readers=fonts.readers
local constructors=fonts.constructors
local otffeatures=constructors.features.otf
local registerotffeature=otffeatures.register
local otfenhancers=constructors.enhancers.otf
local registerotfenhancer=otfenhancers.register
local forceload=false
local cleanup=0  
local syncspace=true
local forcenotdef=false
local privateoffset=fonts.constructors and fonts.constructors.privateoffset or 0xF0000 
local applyruntimefixes=fonts.treatments and fonts.treatments.applyfixes
local wildcard="*"
local default="dflt"
local formats=fonts.formats
formats.otf="opentype"
formats.ttf="truetype"
formats.ttc="truetype"
registerdirective("fonts.otf.loader.cleanup",function(v) cleanup=tonumber(v) or (v and 1) or 0 end)
registerdirective("fonts.otf.loader.force",function(v) forceload=v end)
registerdirective("fonts.otf.loader.syncspace",function(v) syncspace=v end)
registerdirective("fonts.otf.loader.forcenotdef",function(v) forcenotdef=v end)
registerotfenhancer("check extra features",function() end)
local checkmemory=utilities.lua and utilities.lua.checkmemory
local threshold=100 
local tracememory=false
registertracker("fonts.otf.loader.memory",function(v) tracememory=v end)
if not checkmemory then 
 local collectgarbage=collectgarbage
 checkmemory=function(previous,threshold) 
  local current=collectgarbage("count")
  if previous then
   local checked=(threshold or 64)*1024
   if current-previous>checked then
    collectgarbage("collect")
    current=collectgarbage("count")
   end
  end
  return current
 end
end
function otf.load(filename,sub,instance)
 local base=file.basename(file.removesuffix(filename))
 local name=file.removesuffix(base) 
 local attr=lfs.attributes(filename)
 local size=attr and attr.size or 0
 local time=attr and attr.modification or 0
 if sub=="" then
  sub=false
 end
 local hash=name
 if sub then
  hash=hash.."-"..sub
 end
 if instance then
  hash=hash.."-"..instance
 end
 hash=containers.cleanname(hash)
 local data=containers.read(otf.cache,hash)
 local reload=not data or data.size~=size or data.time~=time or data.tableversion~=otfreaders.tableversion
 if forceload then
  report_otf("forced reload of %a due to hard coded flag",filename)
  reload=true
 end
 if reload then
  report_otf("loading %a, hash %a",filename,hash)
  starttiming(otfreaders,true)
  data=otfreaders.loadfont(filename,sub or 1,instance) 
  if data then
   local used=checkmemory()
   local resources=data.resources
   local svgshapes=resources.svgshapes
   local pngshapes=resources.pngshapes
   if cleanup==0 then
    checkmemory(used,threshold,tracememory)
   end
   if svgshapes then
    resources.svgshapes=nil
    if otf.svgenabled then
     local timestamp=os.date()
     containers.write(otf.svgcache,hash,{
      svgshapes=svgshapes,
      timestamp=timestamp,
     })
     data.properties.svg={
      hash=hash,
      timestamp=timestamp,
     }
    end
    if cleanup>1 then
     collectgarbage("collect")
    else
     checkmemory(used,threshold,tracememory)
    end
   end
   if pngshapes then
    resources.pngshapes=nil
    if otf.pngenabled then
     local timestamp=os.date()
     containers.write(otf.pngcache,hash,{
      pngshapes=pngshapes,
      timestamp=timestamp,
     })
     data.properties.png={
      hash=hash,
      timestamp=timestamp,
     }
    end
    if cleanup>1 then
     collectgarbage("collect")
    else
     checkmemory(used,threshold,tracememory)
    end
   end
   otfreaders.compact(data)
   if cleanup==0 then
    checkmemory(used,threshold,tracememory)
   end
   otfreaders.rehash(data,"unicodes")
   otfreaders.addunicodetable(data)
   otfreaders.extend(data)
   if cleanup==0 then
    checkmemory(used,threshold,tracememory)
   end
   otfreaders.pack(data)
   report_otf("loading done")
   report_otf("saving %a in cache",filename)
   data=containers.write(otf.cache,hash,data)
   if cleanup>1 then
    collectgarbage("collect")
   else
    checkmemory(used,threshold,tracememory)
   end
   stoptiming(otfreaders)
   if elapsedtime then
    report_otf("loading, optimizing, packing and caching time %s",elapsedtime(otfreaders))
   end
   if cleanup>3 then
    collectgarbage("collect")
   else
    checkmemory(used,threshold,tracememory)
   end
   data=containers.read(otf.cache,hash) 
   if cleanup>2 then
    collectgarbage("collect")
   else
    checkmemory(used,threshold,tracememory)
   end
  else
   stoptiming(otfreaders)
   data=nil
   report_otf("loading failed due to read error")
  end
 end
 if data then
  if trace_defining then
   report_otf("loading from cache using hash %a",hash)
  end
  otfreaders.unpack(data)
  otfreaders.expand(data) 
  otfreaders.addunicodetable(data)
  otfenhancers.apply(data,filename,data)
  if applyruntimefixes then
   applyruntimefixes(filename,data) 
  end
  data.metadata.math=data.resources.mathconstants
  local classes=data.resources.classes
  if not classes then
   local descriptions=data.descriptions
   classes=setmetatableindex(function(t,k)
    local d=descriptions[k]
    local v=(d and d.class or "base") or false
    t[k]=v
    return v
   end)
   data.resources.classes=classes
  end
 end
 return data
end
function otf.setfeatures(tfmdata,features)
 local okay=constructors.initializefeatures("otf",tfmdata,features,trace_features,report_otf)
 if okay then
  return constructors.collectprocessors("otf",tfmdata,features,trace_features,report_otf)
 else
  return {} 
 end
end
local function copytotfm(data,cache_id)
 if data then
  local metadata=data.metadata
  local properties=derivetable(data.properties)
  local descriptions=derivetable(data.descriptions)
  local goodies=derivetable(data.goodies)
  local characters={}
  local parameters={}
  local mathparameters={}
  local resources=data.resources
  local unicodes=resources.unicodes
  local spaceunits=500
  local spacer="space"
  local designsize=metadata.designsize or 100
  local minsize=metadata.minsize or designsize
  local maxsize=metadata.maxsize or designsize
  local mathspecs=metadata.math
  if designsize==0 then
   designsize=100
   minsize=100
   maxsize=100
  end
  if mathspecs then
   for name,value in next,mathspecs do
    mathparameters[name]=value
   end
  end
  for unicode in next,data.descriptions do 
   characters[unicode]={}
  end
  if mathspecs then
   for unicode,character in next,characters do
    local d=descriptions[unicode] 
    local m=d.math
    if m then
     local italic=m.italic
     local vitalic=m.vitalic
     local variants=m.hvariants
     local parts=m.hparts
     if variants then
      local c=character
      for i=1,#variants do
       local un=variants[i]
       c.next=un
       c=characters[un]
      end 
      c.horiz_variants=parts
     elseif parts then
      character.horiz_variants=parts
      italic=m.hitalic
     end
     local variants=m.vvariants
     local parts=m.vparts
     if variants then
      local c=character
      for i=1,#variants do
       local un=variants[i]
       c.next=un
       c=characters[un]
      end 
      c.vert_variants=parts
     elseif parts then
      character.vert_variants=parts
     end
     if italic and italic~=0 then
      character.italic=italic
     end
     if vitalic and vitalic~=0 then
      character.vert_italic=vitalic
     end
     local accent=m.accent 
     if accent then
      character.accent=accent
     end
     local kerns=m.kerns
     if kerns then
      character.mathkerns=kerns
     end
    end
   end
  end
  local filename=constructors.checkedfilename(resources)
  local fontname=metadata.fontname
  local fullname=metadata.fullname or fontname
  local psname=fontname or fullname
  local subfont=metadata.subfontindex
  local units=metadata.units or 1000
  if units==0 then 
   units=1000 
   metadata.units=1000
   report_otf("changing %a units to %a",0,units)
  end
  local monospaced=metadata.monospaced
  local charwidth=metadata.averagewidth 
  local charxheight=metadata.xheight 
  local italicangle=metadata.italicangle
  local hasitalics=metadata.hasitalics
  properties.monospaced=monospaced
  properties.hasitalics=hasitalics
  parameters.italicangle=italicangle
  parameters.charwidth=charwidth
  parameters.charxheight=charxheight
  local space=0x0020
  local emdash=0x2014
  if monospaced then
   if descriptions[space] then
    spaceunits,spacer=descriptions[space].width,"space"
   end
   if not spaceunits and descriptions[emdash] then
    spaceunits,spacer=descriptions[emdash].width,"emdash"
   end
   if not spaceunits and charwidth then
    spaceunits,spacer=charwidth,"charwidth"
   end
  else
   if descriptions[space] then
    spaceunits,spacer=descriptions[space].width,"space"
   end
   if not spaceunits and descriptions[emdash] then
    spaceunits,spacer=descriptions[emdash].width/2,"emdash/2"
   end
   if not spaceunits and charwidth then
    spaceunits,spacer=charwidth,"charwidth"
   end
  end
  spaceunits=tonumber(spaceunits) or units/2
  parameters.slant=0
  parameters.space=spaceunits   
  parameters.space_stretch=1*units/2   
  parameters.space_shrink=1*units/3   
  parameters.x_height=2*units/5   
  parameters.quad=units    
  if spaceunits<2*units/5 then
  end
  if italicangle and italicangle~=0 then
   parameters.italicangle=italicangle
   parameters.italicfactor=math.cos(math.rad(90+italicangle))
   parameters.slant=- math.tan(italicangle*math.pi/180)
  end
  if monospaced then
   parameters.space_stretch=0
   parameters.space_shrink=0
  elseif syncspace then 
   parameters.space_stretch=spaceunits/2
   parameters.space_shrink=spaceunits/3
  end
  parameters.extra_space=parameters.space_shrink 
  if charxheight then
   parameters.x_height=charxheight
  else
   local x=0x0078
   if x then
    local x=descriptions[x]
    if x then
     parameters.x_height=x.height
    end
   end
  end
  parameters.designsize=(designsize/10)*65536
  parameters.minsize=(minsize/10)*65536
  parameters.maxsize=(maxsize/10)*65536
  parameters.ascender=abs(metadata.ascender  or 0)
  parameters.descender=abs(metadata.descender or 0)
  parameters.units=units
  parameters.vheight=metadata.defaultvheight
  properties.space=spacer
  properties.encodingbytes=2
  properties.format=data.format or formats.otf
  properties.filename=filename
  properties.fontname=fontname
  properties.fullname=fullname
  properties.psname=psname
  properties.name=filename or fullname
  properties.subfont=subfont
  properties.private=properties.private or data.private or privateoffset
  return {
   characters=characters,
   descriptions=descriptions,
   parameters=parameters,
   mathparameters=mathparameters,
   resources=resources,
   properties=properties,
   goodies=goodies,
  }
 end
end
local converters={
 woff={
  cachename="webfonts",
  action=otf.readers.woff2otf,
 }
}
local function checkconversion(specification)
 local filename=specification.filename
 local converter=converters[lower(file.suffix(filename))]
 if converter then
  local base=file.basename(filename)
  local name=file.removesuffix(base)
  local attr=lfs.attributes(filename)
  local size=attr and attr.size or 0
  local time=attr and attr.modification or 0
  if size>0 then
   local cleanname=containers.cleanname(name)
   local cachename=caches.setfirstwritablefile(cleanname,converter.cachename)
   if not io.exists(cachename) or (time~=lfs.attributes(cachename).modification) then
    report_otf("caching font %a in %a",filename,cachename)
    converter.action(filename,cachename) 
    lfs.touch(cachename,time,time)
   end
   specification.filename=cachename
  end
 end
end
local function otftotfm(specification)
 local cache_id=specification.hash
 local tfmdata=containers.read(constructors.cache,cache_id)
 if not tfmdata then
  checkconversion(specification) 
  local name=specification.name
  local sub=specification.sub
  local subindex=specification.subindex
  local filename=specification.filename
  local features=specification.features.normal
  local instance=specification.instance or (features and features.axis)
  local rawdata=otf.load(filename,sub,instance)
  if rawdata and next(rawdata) then
   local descriptions=rawdata.descriptions
   rawdata.lookuphash={} 
   tfmdata=copytotfm(rawdata,cache_id)
   if tfmdata and next(tfmdata) then
    local features=constructors.checkedfeatures("otf",features)
    local shared=tfmdata.shared
    if not shared then
     shared={}
     tfmdata.shared=shared
    end
    shared.rawdata=rawdata
    shared.dynamics={}
    tfmdata.changed={}
    shared.features=features
    shared.processes=otf.setfeatures(tfmdata,features)
   end
  end
  containers.write(constructors.cache,cache_id,tfmdata)
 end
 return tfmdata
end
local function read_from_otf(specification)
 local tfmdata=otftotfm(specification)
 if tfmdata then
  tfmdata.properties.name=specification.name
  tfmdata.properties.sub=specification.sub
  tfmdata=constructors.scale(tfmdata,specification)
  local allfeatures=tfmdata.shared.features or specification.features.normal
  constructors.applymanipulators("otf",tfmdata,allfeatures,trace_features,report_otf)
  constructors.setname(tfmdata,specification) 
  fonts.loggers.register(tfmdata,file.suffix(specification.filename),specification)
 end
 return tfmdata
end
local function checkmathsize(tfmdata,mathsize)
 local mathdata=tfmdata.shared.rawdata.metadata.math
 local mathsize=tonumber(mathsize)
 if mathdata then 
  local parameters=tfmdata.parameters
  parameters.scriptpercentage=mathdata.ScriptPercentScaleDown
  parameters.scriptscriptpercentage=mathdata.ScriptScriptPercentScaleDown
  parameters.mathsize=mathsize 
 end
end
registerotffeature {
 name="mathsize",
 description="apply mathsize specified in the font",
 initializers={
  base=checkmathsize,
  node=checkmathsize,
 }
}
function otf.collectlookups(rawdata,kind,script,language)
 if not kind then
  return
 end
 if not script then
  script=default
 end
 if not language then
  language=default
 end
 local lookupcache=rawdata.lookupcache
 if not lookupcache then
  lookupcache={}
  rawdata.lookupcache=lookupcache
 end
 local kindlookup=lookupcache[kind]
 if not kindlookup then
  kindlookup={}
  lookupcache[kind]=kindlookup
 end
 local scriptlookup=kindlookup[script]
 if not scriptlookup then
  scriptlookup={}
  kindlookup[script]=scriptlookup
 end
 local languagelookup=scriptlookup[language]
 if not languagelookup then
  local sequences=rawdata.resources.sequences
  local featuremap={}
  local featurelist={}
  if sequences then
   for s=1,#sequences do
    local sequence=sequences[s]
    local features=sequence.features
    if features then
     features=features[kind]
     if features then
      features=features[script] or features[wildcard]
      if features then
       features=features[language] or features[wildcard]
       if features then
        if not featuremap[sequence] then
         featuremap[sequence]=true
         featurelist[#featurelist+1]=sequence
        end
       end
      end
     end
    end
   end
   if #featurelist==0 then
    featuremap,featurelist=false,false
   end
  else
   featuremap,featurelist=false,false
  end
  languagelookup={ featuremap,featurelist }
  scriptlookup[language]=languagelookup
 end
 return unpack(languagelookup)
end
local function getgsub(tfmdata,k,kind,value)
 local shared=tfmdata.shared
 local rawdata=shared and shared.rawdata
 if rawdata then
  local sequences=rawdata.resources.sequences
  if sequences then
   local properties=tfmdata.properties
   local validlookups,lookuplist=otf.collectlookups(rawdata,kind,properties.script,properties.language)
   if validlookups then
    for i=1,#lookuplist do
     local lookup=lookuplist[i]
     local steps=lookup.steps
     local nofsteps=lookup.nofsteps
     for i=1,nofsteps do
      local coverage=steps[i].coverage
      if coverage then
       local found=coverage[k]
       if found then
        return found,lookup.type
       end
      end
     end
    end
   end
  end
 end
end
otf.getgsub=getgsub 
function otf.getsubstitution(tfmdata,k,kind,value)
 local found,kind=getgsub(tfmdata,k,kind,value)
 if not found then
 elseif kind=="gsub_single" then
  return found
 elseif kind=="gsub_alternate" then
  local choice=tonumber(value) or 1 
  return found[choice] or found[1] or k
 end
 return k
end
otf.getalternate=otf.getsubstitution
function otf.getmultiple(tfmdata,k,kind)
 local found,kind=getgsub(tfmdata,k,kind)
 if found and kind=="gsub_multiple" then
  return found
 end
 return { k }
end
function otf.getkern(tfmdata,left,right,kind)
 local kerns=getgsub(tfmdata,left,kind or "kern",true) 
 if kerns then
  local found=kerns[right]
  local kind=type(found)
  if kind=="table" then
   found=found[1][3] 
  elseif kind~="number" then
   found=false
  end
  if found then
   return found*tfmdata.parameters.factor
  end
 end
 return 0
end
local function check_otf(forced,specification,suffix)
 local name=specification.name
 if forced then
  name=specification.forcedname 
 end
 local fullname=findbinfile(name,suffix) or ""
 if fullname=="" then
  fullname=fonts.names.getfilename(name,suffix) or ""
 end
 if fullname~="" and not fonts.names.ignoredfile(fullname) then
  specification.filename=fullname
  return read_from_otf(specification)
 end
end
local function opentypereader(specification,suffix)
 local forced=specification.forced or ""
 if formats[forced] then
  return check_otf(true,specification,forced)
 else
  return check_otf(false,specification,suffix)
 end
end
readers.opentype=opentypereader 
function readers.otf(specification) return opentypereader(specification,"otf") end
function readers.ttf(specification) return opentypereader(specification,"ttf") end
function readers.ttc(specification) return opentypereader(specification,"ttf") end
function readers.woff(specification)
 checkconversion(specification)
 opentypereader(specification,"")
end
function otf.scriptandlanguage(tfmdata,attr)
 local properties=tfmdata.properties
 return properties.script or "dflt",properties.language or "dflt"
end
local function justset(coverage,unicode,replacement)
 coverage[unicode]=replacement
end
otf.coverup={
 stepkey="steps",
 actions={
  chainsubstitution=justset,
  chainposition=justset,
  substitution=justset,
  alternate=justset,
  multiple=justset,
  kern=justset,
  pair=justset,
  single=justset,
  ligature=function(coverage,unicode,ligature)
   local first=ligature[1]
   local tree=coverage[first]
   if not tree then
    tree={}
    coverage[first]=tree
   end
   for i=2,#ligature do
    local l=ligature[i]
    local t=tree[l]
    if not t then
     t={}
     tree[l]=t
    end
    tree=t
   end
   tree.ligature=unicode
  end,
 },
 register=function(coverage,featuretype,format)
  return {
   format=format,
   coverage=coverage,
  }
 end
}

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['font-oto']={ 
 version=1.001,
 comment="companion to font-ini.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
local concat,unpack=table.concat,table.unpack
local insert,remove=table.insert,table.remove
local format,gmatch,gsub,find,match,lower,strip=string.format,string.gmatch,string.gsub,string.find,string.match,string.lower,string.strip
local type,next,tonumber,tostring=type,next,tonumber,tostring
local trace_baseinit=false  trackers.register("otf.baseinit",function(v) trace_baseinit=v end)
local trace_singles=false  trackers.register("otf.singles",function(v) trace_singles=v end)
local trace_multiples=false  trackers.register("otf.multiples",function(v) trace_multiples=v end)
local trace_alternatives=false  trackers.register("otf.alternatives",function(v) trace_alternatives=v end)
local trace_ligatures=false  trackers.register("otf.ligatures",function(v) trace_ligatures=v end)
local trace_kerns=false  trackers.register("otf.kerns",function(v) trace_kerns=v end)
local trace_preparing=false  trackers.register("otf.preparing",function(v) trace_preparing=v end)
local report_prepare=logs.reporter("fonts","otf prepare")
local fonts=fonts
local otf=fonts.handlers.otf
local otffeatures=otf.features
local registerotffeature=otffeatures.register
otf.defaultbasealternate="none" 
local getprivate=fonts.constructors.getprivate
local wildcard="*"
local default="dflt"
local formatters=string.formatters
local f_unicode=formatters["%U"]
local f_uniname=formatters["%U (%s)"]
local f_unilist=formatters["% t (% t)"]
local function gref(descriptions,n)
 if type(n)=="number" then
  local name=descriptions[n].name
  if name then
   return f_uniname(n,name)
  else
   return f_unicode(n)
  end
 elseif n then
  local num={}
  local nam={}
  local j=0
  for i=1,#n do
   local ni=n[i]
   if tonumber(ni) then 
    j=j+1
    local di=descriptions[ni]
    num[j]=f_unicode(ni)
    nam[j]=di and di.name or "-"
   end
  end
  return f_unilist(num,nam)
 else
  return "<error in base mode tracing>"
 end
end
local function cref(feature,sequence)
 return formatters["feature %a, type %a, chain lookup %a"](feature,sequence.type,sequence.name)
end
local function report_substitution(feature,sequence,descriptions,unicode,substitution)
 if unicode==substitution then
  report_prepare("%s: base substitution %s maps onto itself",
   cref(feature,sequence),
   gref(descriptions,unicode))
 else
  report_prepare("%s: base substitution %s => %S",
   cref(feature,sequence),
   gref(descriptions,unicode),
   gref(descriptions,substitution))
 end
end
local function report_alternate(feature,sequence,descriptions,unicode,replacement,value,comment)
 if unicode==replacement then
  report_prepare("%s: base alternate %s maps onto itself",
   cref(feature,sequence),
   gref(descriptions,unicode))
 else
  report_prepare("%s: base alternate %s => %s (%S => %S)",
   cref(feature,sequence),
   gref(descriptions,unicode),
   replacement and gref(descriptions,replacement),
   value,
   comment)
 end
end
local function report_ligature(feature,sequence,descriptions,unicode,ligature)
 report_prepare("%s: base ligature %s => %S",
  cref(feature,sequence),
  gref(descriptions,ligature),
  gref(descriptions,unicode))
end
local function report_kern(feature,sequence,descriptions,unicode,otherunicode,value)
 report_prepare("%s: base kern %s + %s => %S",
  cref(feature,sequence),
  gref(descriptions,unicode),
  gref(descriptions,otherunicode),
  value)
end
local basehash,basehashes,applied={},1,{}
local function registerbasehash(tfmdata)
 local properties=tfmdata.properties
 local hash=concat(applied," ")
 local base=basehash[hash]
 if not base then
  basehashes=basehashes+1
  base=basehashes
  basehash[hash]=base
 end
 properties.basehash=base
 properties.fullname=(properties.fullname or properties.name).."-"..base
 applied={}
end
local function registerbasefeature(feature,value)
 applied[#applied+1]=feature.."="..tostring(value)
end
local function makefake(tfmdata,name,present)
 local private=getprivate(tfmdata)
 local character={ intermediate=true,ligatures={} }
 resources.unicodes[name]=private
 tfmdata.characters[private]=character
 tfmdata.descriptions[private]={ name=name }
 present[name]=private
 return character
end
local function make_1(present,tree,name)
 for k,v in next,tree do
  if k=="ligature" then
   present[name]=v
  else
   make_1(present,v,name.."_"..k)
  end
 end
end
local function make_2(present,tfmdata,characters,tree,name,preceding,unicode,done)
 for k,v in next,tree do
  if k=="ligature" then
   local character=characters[preceding]
   if not character then
    if trace_baseinit then
     report_prepare("weird ligature in lookup %a, current %C, preceding %C",sequence.name,v,preceding)
    end
    character=makefake(tfmdata,name,present)
   end
   local ligatures=character.ligatures
   if ligatures then
    ligatures[unicode]={ char=v }
   else
    character.ligatures={ [unicode]={ char=v } }
   end
   if done then
    local d=done[name]
    if not d then
     done[name]={ "dummy",v }
    else
     d[#d+1]=v
    end
   end
  else
   local code=present[name] or unicode
   local name=name.."_"..k
   make_2(present,tfmdata,characters,v,name,code,k,done)
  end
 end
end
local function preparesubstitutions(tfmdata,feature,value,validlookups,lookuplist)
 local characters=tfmdata.characters
 local descriptions=tfmdata.descriptions
 local resources=tfmdata.resources
 local changed=tfmdata.changed
 local ligatures={}
 local alternate=tonumber(value) or true and 1
 local defaultalt=otf.defaultbasealternate
 local trace_singles=trace_baseinit and trace_singles
 local trace_alternatives=trace_baseinit and trace_alternatives
 local trace_ligatures=trace_baseinit and trace_ligatures
 if not changed then
  changed={}
  tfmdata.changed=changed
 end
 for i=1,#lookuplist do
  local sequence=lookuplist[i]
  local steps=sequence.steps
  local kind=sequence.type
  if kind=="gsub_single" then
   for i=1,#steps do
    for unicode,data in next,steps[i].coverage do
     if unicode~=data then
      changed[unicode]=data
     end
     if trace_singles then
      report_substitution(feature,sequence,descriptions,unicode,data)
     end
    end
   end
  elseif kind=="gsub_alternate" then
   for i=1,#steps do
    for unicode,data in next,steps[i].coverage do
     local replacement=data[alternate]
     if replacement then
      if unicode~=replacement then
       changed[unicode]=replacement
      end
      if trace_alternatives then
       report_alternate(feature,sequence,descriptions,unicode,replacement,value,"normal")
      end
     elseif defaultalt=="first" then
      replacement=data[1]
      if unicode~=replacement then
       changed[unicode]=replacement
      end
      if trace_alternatives then
       report_alternate(feature,sequence,descriptions,unicode,replacement,value,defaultalt)
      end
     elseif defaultalt=="last" then
      replacement=data[#data]
      if unicode~=replacement then
       changed[unicode]=replacement
      end
      if trace_alternatives then
       report_alternate(feature,sequence,descriptions,unicode,replacement,value,defaultalt)
      end
     else
      if trace_alternatives then
       report_alternate(feature,sequence,descriptions,unicode,replacement,value,"unknown")
      end
     end
    end
   end
  elseif kind=="gsub_ligature" then
   for i=1,#steps do
    for unicode,data in next,steps[i].coverage do
     ligatures[#ligatures+1]={ unicode,data,"" } 
     if trace_ligatures then
      report_ligature(feature,sequence,descriptions,unicode,data)
     end
    end
   end
  end
 end
 local nofligatures=#ligatures
 if nofligatures>0 then
  local characters=tfmdata.characters
  local present={}
  local done=trace_baseinit and trace_ligatures and {}
  for i=1,nofligatures do
   local ligature=ligatures[i]
   local unicode=ligature[1]
   local tree=ligature[2]
   make_1(present,tree,"ctx_"..unicode)
  end
  for i=1,nofligatures do
   local ligature=ligatures[i]
   local unicode=ligature[1]
   local tree=ligature[2]
   local lookupname=ligature[3]
   make_2(present,tfmdata,characters,tree,"ctx_"..unicode,unicode,unicode,done,sequence)
  end
 end
end
local function preparepositionings(tfmdata,feature,value,validlookups,lookuplist)
 local characters=tfmdata.characters
 local descriptions=tfmdata.descriptions
 local resources=tfmdata.resources
 local properties=tfmdata.properties
 local traceindeed=trace_baseinit and trace_kerns
 for i=1,#lookuplist do
  local sequence=lookuplist[i]
  local steps=sequence.steps
  local kind=sequence.type
  local format=sequence.format
  if kind=="gpos_pair" then
   for i=1,#steps do
    local step=steps[i]
    local format=step.format
    if format=="kern" or format=="move" then
     for unicode,data in next,steps[i].coverage do
      local character=characters[unicode]
      local kerns=character.kerns
      if not kerns then
       kerns={}
       character.kerns=kerns
      end
      if traceindeed then
       for otherunicode,kern in next,data do
        if not kerns[otherunicode] and kern~=0 then
         kerns[otherunicode]=kern
         report_kern(feature,sequence,descriptions,unicode,otherunicode,kern)
        end
       end
      else
       for otherunicode,kern in next,data do
        if not kerns[otherunicode] and kern~=0 then
         kerns[otherunicode]=kern
        end
       end
      end
     end
    else
     for unicode,data in next,steps[i].coverage do
      local character=characters[unicode]
      local kerns=character.kerns
      for otherunicode,kern in next,data do
       local other=kern[2]
       if other==true or (not other and not (kerns and kerns[otherunicode])) then
        local kern=kern[1]
        if kern==true then
        elseif kern[1]~=0 or kern[2]~=0 or kern[4]~=0 then
        else
         kern=kern[3]
         if kern~=0 then
          if kerns then
           kerns[otherunicode]=kern
          else
           kerns={ [otherunicode]=kern }
           character.kerns=kerns
          end
          if traceindeed then
           report_kern(feature,sequence,descriptions,unicode,otherunicode,kern)
          end
         end
        end
       end
      end
     end
    end
   end
  end
 end
end
local function initializehashes(tfmdata)
end
local function checkmathreplacements(tfmdata,fullname,fixitalics)
 if tfmdata.mathparameters then
  local characters=tfmdata.characters
  local changed=tfmdata.changed
  if next(changed) then
   if trace_preparing or trace_baseinit then
    report_prepare("checking math replacements for %a",fullname)
   end
   for unicode,replacement in next,changed do
    local u=characters[unicode]
    local r=characters[replacement]
    if u and r then
     local n=u.next
     local v=u.vert_variants
     local h=u.horiz_variants
     if fixitalics then
      local ui=u.italic
      if ui and not r.italic then
       if trace_preparing then
        report_prepare("using %i units of italic correction from %C for %U",ui,unicode,replacement)
       end
       r.italic=ui 
      end
     end
     if n and not r.next then
      if trace_preparing then
       report_prepare("forcing %s for %C substituted by %U","incremental step",unicode,replacement)
      end
      r.next=n
     end
     if v and not r.vert_variants then
      if trace_preparing then
       report_prepare("forcing %s for %C substituted by %U","vertical variants",unicode,replacement)
      end
      r.vert_variants=v
     end
     if h and not r.horiz_variants then
      if trace_preparing then
       report_prepare("forcing %s for %C substituted by %U","horizontal variants",unicode,replacement)
      end
      r.horiz_variants=h
     end
    else
     if trace_preparing then
      report_prepare("error replacing %C by %U",unicode,replacement)
     end
    end
   end
  end
 end
end
local function featuresinitializer(tfmdata,value)
 if true then 
  local starttime=trace_preparing and os.clock()
  local features=tfmdata.shared.features
  local fullname=tfmdata.properties.fullname or "?"
  if features then
   initializehashes(tfmdata)
   local collectlookups=otf.collectlookups
   local rawdata=tfmdata.shared.rawdata
   local properties=tfmdata.properties
   local script=properties.script
   local language=properties.language
   local rawresources=rawdata.resources
   local rawfeatures=rawresources and rawresources.features
   local basesubstitutions=rawfeatures and rawfeatures.gsub
   local basepositionings=rawfeatures and rawfeatures.gpos
   local substitutionsdone=false
   local positioningsdone=false
   if basesubstitutions or basepositionings then
    local sequences=tfmdata.resources.sequences
    for s=1,#sequences do
     local sequence=sequences[s]
     local sfeatures=sequence.features
     if sfeatures then
      local order=sequence.order
      if order then
       for i=1,#order do 
        local feature=order[i]
        local value=features[feature]
        if value then
         local validlookups,lookuplist=collectlookups(rawdata,feature,script,language)
         if not validlookups then
         elseif basesubstitutions and basesubstitutions[feature] then
          if trace_preparing then
           report_prepare("filtering base %s feature %a for %a with value %a","sub",feature,fullname,value)
          end
          preparesubstitutions(tfmdata,feature,value,validlookups,lookuplist)
          registerbasefeature(feature,value)
          substitutionsdone=true
         elseif basepositionings and basepositionings[feature] then
          if trace_preparing then
           report_prepare("filtering base %a feature %a for %a with value %a","pos",feature,fullname,value)
          end
          preparepositionings(tfmdata,feature,value,validlookups,lookuplist)
          registerbasefeature(feature,value)
          positioningsdone=true
         end
        end
       end
      end
     end
    end
   end
   if substitutionsdone then
    checkmathreplacements(tfmdata,fullname,features.fixitalics)
   end
   registerbasehash(tfmdata)
  end
  if trace_preparing then
   report_prepare("preparation time is %0.3f seconds for %a",os.clock()-starttime,fullname)
  end
 end
end
registerotffeature {
 name="features",
 description="features",
 default=true,
 initializers={
  base=featuresinitializer,
 }
}
otf.basemodeinitializer=featuresinitializer

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['font-otj']={
 version=1.001,
 comment="companion to font-lib.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files",
}
if not nodes.properties then return end
local next,rawget,tonumber=next,rawget,tonumber
local fastcopy=table.fastcopy
local registertracker=trackers.register
local registerdirective=directives.register
local trace_injections=false  registertracker("fonts.injections",function(v) trace_injections=v end)
local trace_marks=false  registertracker("fonts.injections.marks",function(v) trace_marks=v end)
local trace_cursive=false  registertracker("fonts.injections.cursive",function(v) trace_cursive=v end)
local trace_spaces=false  registertracker("fonts.injections.spaces",function(v) trace_spaces=v end)
local report_injections=logs.reporter("fonts","injections")
local report_spaces=logs.reporter("fonts","spaces")
local attributes,nodes,node=attributes,nodes,node
fonts=fonts
local hashes=fonts.hashes
local fontdata=hashes.identifiers
local fontmarks=hashes.marks
nodes.injections=nodes.injections or {}
local injections=nodes.injections
local tracers=nodes.tracers
local setcolor=tracers and tracers.colors.set
local resetcolor=tracers and tracers.colors.reset
local nodecodes=nodes.nodecodes
local glyph_code=nodecodes.glyph
local disc_code=nodecodes.disc
local kern_code=nodecodes.kern
local glue_code=nodecodes.glue
local nuts=nodes.nuts
local nodepool=nuts.pool
local tonode=nuts.tonode
local tonut=nuts.tonut
local setfield=nuts.setfield
local getnext=nuts.getnext
local getprev=nuts.getprev
local getid=nuts.getid
local getfont=nuts.getfont
local getchar=nuts.getchar
local getoffsets=nuts.getoffsets
local getboth=nuts.getboth
local getdisc=nuts.getdisc
local setdisc=nuts.setdisc
local setoffsets=nuts.setoffsets
local ischar=nuts.ischar
local getkern=nuts.getkern
local setkern=nuts.setkern
local setlink=nuts.setlink
local setwidth=nuts.setwidth
local getwidth=nuts.getwidth
local nextchar=nuts.traversers.char
local nextglue=nuts.traversers.glue
local insert_node_before=nuts.insert_before
local insert_node_after=nuts.insert_after
local properties=nodes.properties.data
local fontkern=nuts.pool and nuts.pool.fontkern   
local italickern=nuts.pool and nuts.pool.italickern 
local useitalickerns=false 
directives.register("fonts.injections.useitalics",function(v)
 if v then
  report_injections("using italics for space kerns (tracing only)")
 end
 useitalickerns=v
end)
if not fontkern then 
 local thekern=nuts.new("kern",0) 
 local setkern=nuts.setkern
 local copy_node=nuts.copy_node
 fontkern=function(k)
  local n=copy_node(thekern)
  setkern(n,k)
  return n
 end
end
if not italickern then 
 local thekern=nuts.new("kern",3) 
 local setkern=nuts.setkern
 local copy_node=nuts.copy_node
 italickern=function(k)
  local n=copy_node(thekern)
  setkern(n,k)
  return n
 end
end
function injections.installnewkern() end 
local nofregisteredkerns=0
local nofregisteredpositions=0
local nofregisteredmarks=0
local nofregisteredcursives=0
local keepregisteredcounts=false
function injections.keepcounts()
 keepregisteredcounts=true
end
function injections.resetcounts()
 nofregisteredkerns=0
 nofregisteredpositions=0
 nofregisteredmarks=0
 nofregisteredcursives=0
 keepregisteredcounts=false
end
function injections.reset(n)
 local p=rawget(properties,n)
 if p then
  p.injections=false 
 else
  properties[n]=false 
 end
end
function injections.copy(target,source)
 local sp=rawget(properties,source)
 if sp then
  local tp=rawget(properties,target)
  local si=sp.injections
  if si then
   si=fastcopy(si)
   if tp then
    tp.injections=si
   else
    properties[target]={
     injections=si,
    }
   end
  elseif tp then
   tp.injections=false 
  else
   properties[target]={ injections={} }
  end
 else
  local tp=rawget(properties,target)
  if tp then
   tp.injections=false 
  else
   properties[target]=false 
  end
 end
end
function injections.setligaindex(n,index) 
 local p=rawget(properties,n)
 if p then
  local i=p.injections
  if i then
   i.ligaindex=index
  else
   p.injections={
    ligaindex=index
   }
  end
 else
  properties[n]={
   injections={
    ligaindex=index
   }
  }
 end
end
function injections.getligaindex(n,default)
 local p=rawget(properties,n)
 if p then
  local i=p.injections
  if i then
   return i.ligaindex or default
  end
 end
 return default
end
function injections.setcursive(start,nxt,factor,rlmode,exit,entry,tfmstart,tfmnext,r2lflag)
 local dx=factor*(exit[1]-entry[1])
 local dy=-factor*(exit[2]-entry[2])
 local ws=tfmstart.width
 local wn=tfmnext.width
 nofregisteredcursives=nofregisteredcursives+1
 if rlmode<0 then
  dx=-(dx+wn)
 else
  dx=dx-ws
 end
 if dx==0 then
  dx=0
 end
 local p=rawget(properties,start)
 if p then
  local i=p.injections
  if i then
   i.cursiveanchor=true
  else
   p.injections={
    cursiveanchor=true,
   }
  end
 else
  properties[start]={
   injections={
    cursiveanchor=true,
   },
  }
 end
 local p=rawget(properties,nxt)
 if p then
  local i=p.injections
  if i then
   i.cursivex=dx
   i.cursivey=dy
  else
   p.injections={
    cursivex=dx,
    cursivey=dy,
   }
  end
 else
  properties[nxt]={
   injections={
    cursivex=dx,
    cursivey=dy,
   },
  }
 end
 return dx,dy,nofregisteredcursives
end
function injections.setposition(kind,current,factor,rlmode,spec,injection)
 local x=factor*(spec[1] or 0)
 local y=factor*(spec[2] or 0)
 local w=factor*(spec[3] or 0)
 local h=factor*(spec[4] or 0)
 if x~=0 or w~=0 or y~=0 or h~=0 then 
  local yoffset=y-h
  local leftkern=x   
  local rightkern=w-x  
  if leftkern~=0 or rightkern~=0 or yoffset~=0 then
   nofregisteredpositions=nofregisteredpositions+1
   if rlmode and rlmode<0 then
    leftkern,rightkern=rightkern,leftkern
   end
   if not injection then
    injection="injections"
   end
   local p=rawget(properties,current)
   if p then
    local i=p[injection]
    if i then
     if leftkern~=0 then
      i.leftkern=(i.leftkern  or 0)+leftkern
     end
     if rightkern~=0 then
      i.rightkern=(i.rightkern or 0)+rightkern
     end
     if yoffset~=0 then
      i.yoffset=(i.yoffset or 0)+yoffset
     end
    elseif leftkern~=0 or rightkern~=0 then
     p[injection]={
      leftkern=leftkern,
      rightkern=rightkern,
      yoffset=yoffset,
     }
    else
     p[injection]={
      yoffset=yoffset,
     }
    end
   elseif leftkern~=0 or rightkern~=0 then
    properties[current]={
     [injection]={
      leftkern=leftkern,
      rightkern=rightkern,
      yoffset=yoffset,
     },
    }
   else
    properties[current]={
     [injection]={
      yoffset=yoffset,
     },
    }
   end
   return x,y,w,h,nofregisteredpositions
   end
 end
 return x,y,w,h 
end
function injections.setkern(current,factor,rlmode,x,injection)
 local dx=factor*x
 if dx~=0 then
  nofregisteredkerns=nofregisteredkerns+1
  local p=rawget(properties,current)
  if not injection then
   injection="injections"
  end
  if p then
   local i=p[injection]
   if i then
    i.leftkern=dx+(i.leftkern or 0)
   else
    p[injection]={
     leftkern=dx,
    }
   end
  else
   properties[current]={
    [injection]={
     leftkern=dx,
    },
   }
  end
  return dx,nofregisteredkerns
 else
  return 0,0
 end
end
function injections.setmove(current,factor,rlmode,x,injection)
 local dx=factor*x
 if dx~=0 then
  nofregisteredkerns=nofregisteredkerns+1
  local p=rawget(properties,current)
  if not injection then
   injection="injections"
  end
  if rlmode and rlmode<0 then
   if p then
    local i=p[injection]
    if i then
     i.rightkern=dx+(i.rightkern or 0)
    else
     p[injection]={
      rightkern=dx,
     }
    end
   else
    properties[current]={
     [injection]={
      rightkern=dx,
     },
    }
   end
  else
   if p then
    local i=p[injection]
    if i then
     i.leftkern=dx+(i.leftkern or 0)
    else
     p[injection]={
      leftkern=dx,
     }
    end
   else
    properties[current]={
     [injection]={
      leftkern=dx,
     },
    }
   end
  end
  return dx,nofregisteredkerns
 else
  return 0,0
 end
end
function injections.setmark(start,base,factor,rlmode,ba,ma,tfmbase,mkmk,checkmark) 
 local dx=factor*(ba[1]-ma[1])
 local dy=factor*(ba[2]-ma[2])
 nofregisteredmarks=nofregisteredmarks+1
 if rlmode>=0 then
  dx=tfmbase.width-dx 
 end
 local p=rawget(properties,start)
 if p then
  local i=p.injections
  if i then
   if i.markmark then
   else
    i.markx=dx
    i.marky=dy
    i.markdir=rlmode or 0
    i.markbase=nofregisteredmarks
    i.markbasenode=base
    i.markmark=mkmk
    i.checkmark=checkmark
   end
  else
   p.injections={
    markx=dx,
    marky=dy,
    markdir=rlmode or 0,
    markbase=nofregisteredmarks,
    markbasenode=base,
    markmark=mkmk,
    checkmark=checkmark,
   }
  end
 else
  properties[start]={
   injections={
    markx=dx,
    marky=dy,
    markdir=rlmode or 0,
    markbase=nofregisteredmarks,
    markbasenode=base,
    markmark=mkmk,
    checkmark=checkmark,
   },
  }
 end
 return dx,dy,nofregisteredmarks
end
local function dir(n)
 return (n and n<0 and "r-to-l") or (n and n>0 and "l-to-r") or "unset"
end
local function showchar(n,nested)
 local char=getchar(n)
 report_injections("%wfont %s, char %U, glyph %c",nested and 2 or 0,getfont(n),char,char)
end
local function show(n,what,nested,symbol)
 if n then
  local p=rawget(properties,n)
  if p then
   local i=p[what]
   if i then
    local leftkern=i.leftkern  or 0
    local rightkern=i.rightkern or 0
    local yoffset=i.yoffset   or 0
    local markx=i.markx  or 0
    local marky=i.marky  or 0
    local markdir=i.markdir   or 0
    local markbase=i.markbase  or 0
    local cursivex=i.cursivex  or 0
    local cursivey=i.cursivey  or 0
    local ligaindex=i.ligaindex or 0
    local cursbase=i.cursiveanchor
    local margin=nested and 4 or 2
    if rightkern~=0 or yoffset~=0 then
     report_injections("%w%s pair: lx %p, rx %p, dy %p",margin,symbol,leftkern,rightkern,yoffset)
    elseif leftkern~=0 then
     report_injections("%w%s kern: dx %p",margin,symbol,leftkern)
    end
    if markx~=0 or marky~=0 or markbase~=0 then
     report_injections("%w%s mark: dx %p, dy %p, dir %s, base %s",margin,symbol,markx,marky,markdir,markbase~=0 and "yes" or "no")
    end
    if cursivex~=0 or cursivey~=0 then
     if cursbase then
      report_injections("%w%s curs: base dx %p, dy %p",margin,symbol,cursivex,cursivey)
     else
      report_injections("%w%s curs: dx %p, dy %p",margin,symbol,cursivex,cursivey)
     end
    elseif cursbase then
     report_injections("%w%s curs: base",margin,symbol)
    end
    if ligaindex~=0 then
     report_injections("%w%s liga: index %i",margin,symbol,ligaindex)
    end
   end
  end
 end
end
local function showsub(n,what,where)
 report_injections("begin subrun: %s",where)
 for n in nextchar,n do
  showchar(n,where)
  show(n,what,where," ")
 end
 report_injections("end subrun")
end
local function trace(head,where)
 report_injections()
 report_injections("begin run %s: %s kerns, %s positions, %s marks and %s cursives registered",
  where or "",nofregisteredkerns,nofregisteredpositions,nofregisteredmarks,nofregisteredcursives)
 local n=head
 while n do
  local id=getid(n)
  if id==glyph_code then
   showchar(n)
   show(n,"injections",false," ")
   show(n,"preinjections",false,"<")
   show(n,"postinjections",false,">")
   show(n,"replaceinjections",false,"=")
   show(n,"emptyinjections",false,"*")
  elseif id==disc_code then
   local pre,post,replace=getdisc(n)
   if pre then
    showsub(pre,"preinjections","pre")
   end
   if post then
    showsub(post,"postinjections","post")
   end
   if replace then
    showsub(replace,"replaceinjections","replace")
   end
   show(n,"emptyinjections",false,"*")
  end
  n=getnext(n)
 end
 report_injections("end run")
end
local function show_result(head)
 local current=head
 local skipping=false
 while current do
  local id=getid(current)
  if id==glyph_code then
   local w=getwidth(current)
   local x,y=getoffsets(current)
   report_injections("char: %C, width %p, xoffset %p, yoffset %p",getchar(current),w,x,y)
   skipping=false
  elseif id==kern_code then
   report_injections("kern: %p",getkern(current))
   skipping=false
  elseif not skipping then
   report_injections()
   skipping=true
  end
  current=getnext(current)
 end
 report_injections()
end
local function inject_kerns_only(head,where)
 if trace_injections then
  trace(head,"kerns")
 end
 local current=head
 local prev=nil
 local next=nil
 local prevdisc=nil
 local pre=nil 
 local post=nil 
 local replace=nil 
 local pretail=nil 
 local posttail=nil 
 local replacetail=nil 
 while current do
  local next=getnext(current)
  local char,id=ischar(current)
  if char then
   local p=rawget(properties,current)
   if p then
    local i=p.injections
    if i then
     local leftkern=i.leftkern
     if leftkern and leftkern~=0 then
      if prev and getid(prev)==glue_code then
       if useitalickerns then
        head=insert_node_before(head,current,italickern(leftkern))
       else
        setwidth(prev,getwidth(prev)+leftkern)
       end
      else
       head=insert_node_before(head,current,fontkern(leftkern))
      end
     end
    end
    if prevdisc then
     local done=false
     if post then
      local i=p.postinjections
      if i then
       local leftkern=i.leftkern
       if leftkern and leftkern~=0 then
        setlink(posttail,fontkern(leftkern))
        done=true
       end
      end
     end
     if replace then
      local i=p.replaceinjections
      if i then
       local leftkern=i.leftkern
       if leftkern and leftkern~=0 then
        setlink(replacetail,fontkern(leftkern))
        done=true
       end
      end
     else
      local i=p.emptyinjections
      if i then
       local leftkern=i.leftkern
       if leftkern and leftkern~=0 then
        replace=fontkern(leftkern)
        done=true
       end
      end
     end
     if done then
      setdisc(prevdisc,pre,post,replace)
     end
    end
   end
   prevdisc=nil
  elseif char==false then
   prevdisc=nil
  elseif id==disc_code then
   pre,post,replace,pretail,posttail,replacetail=getdisc(current,true)
   local done=false
   if pre then
    for n in nextchar,pre do
     local p=rawget(properties,n)
     if p then
      local i=p.injections or p.preinjections
      if i then
       local leftkern=i.leftkern
       if leftkern and leftkern~=0 then
        pre=insert_node_before(pre,n,fontkern(leftkern))
        done=true
       end
      end
     end
    end
   end
   if post then
    for n in nextchar,post do
     local p=rawget(properties,n)
     if p then
      local i=p.injections or p.postinjections
      if i then
       local leftkern=i.leftkern
       if leftkern and leftkern~=0 then
        post=insert_node_before(post,n,fontkern(leftkern))
        done=true
       end
      end
     end
    end
   end
   if replace then
    for n in nextchar,replace do
     local p=rawget(properties,n)
     if p then
      local i=p.injections or p.replaceinjections
      if i then
       local leftkern=i.leftkern
       if leftkern and leftkern~=0 then
        replace=insert_node_before(replace,n,fontkern(leftkern))
        done=true
       end
      end
     end
    end
   end
   if done then
    setdisc(current,pre,post,replace)
   end
   prevdisc=current
  else
   prevdisc=nil
  end
  prev=current
  current=next
 end
 if keepregisteredcounts then
  keepregisteredcounts=false
 else
  nofregisteredkerns=0
 end
 if trace_injections then
  show_result(head)
 end
 return head
end
local function inject_positions_only(head,where)
 if trace_injections then
  trace(head,"positions")
 end
 local current=head
 local prev=nil
 local next=nil
 local prevdisc=nil
 local prevglyph=nil
 local pre=nil 
 local post=nil 
 local replace=nil 
 local pretail=nil 
 local posttail=nil 
 local replacetail=nil 
 while current do
  local next=getnext(current)
  local char,id=ischar(current)
  if char then
   local p=rawget(properties,current)
   if p then
    local i=p.injections
    if i then
     local yoffset=i.yoffset
     if yoffset and yoffset~=0 then
      setoffsets(current,false,yoffset)
     end
     local leftkern=i.leftkern
     local rightkern=i.rightkern
     if leftkern and leftkern~=0 then
      if rightkern and leftkern==-rightkern then
       setoffsets(current,leftkern,false)
       rightkern=0
      elseif prev and getid(prev)==glue_code then
       if useitalickerns then
        head=insert_node_before(head,current,italickern(leftkern))
       else
        setwidth(prev,getwidth(prev)+leftkern)
       end
      else
       head=insert_node_before(head,current,fontkern(leftkern))
      end
     end
     if rightkern and rightkern~=0 then
      if next and getid(next)==glue_code then
       if useitalickerns then
        insert_node_after(head,current,italickern(rightkern))
       else
        setwidth(next,getwidth(next)+rightkern)
       end
      else
       insert_node_after(head,current,fontkern(rightkern))
      end
     end
    else
     local i=p.emptyinjections
     if i then
      local rightkern=i.rightkern
      if rightkern and rightkern~=0 then
       if next and getid(next)==disc_code then
        if replace then
        else
         replace=fontkern(rightkern) 
         done=true	
        end
       end
      end
     end
    end
    if prevdisc then
     local done=false
     if post then
      local i=p.postinjections
      if i then
       local leftkern=i.leftkern
       if leftkern and leftkern~=0 then
        setlink(posttail,fontkern(leftkern))
        done=true
       end
      end
     end
     if replace then
      local i=p.replaceinjections
      if i then
       local leftkern=i.leftkern
       if leftkern and leftkern~=0 then
        setlink(replacetail,fontkern(leftkern))
        done=true
       end
      end
     else
      local i=p.emptyinjections
      if i then
       local leftkern=i.leftkern
       if leftkern and leftkern~=0 then
        replace=fontkern(leftkern)
        done=true
       end
      end
     end
     if done then
      setdisc(prevdisc,pre,post,replace)
     end
    end
   end
   prevdisc=nil
   prevglyph=current
  elseif char==false then
   prevdisc=nil
   prevglyph=current
  elseif id==disc_code then
   pre,post,replace,pretail,posttail,replacetail=getdisc(current,true)
   local done=false
   if pre then
    for n in nextchar,pre do
     local p=rawget(properties,n)
     if p then
      local i=p.injections or p.preinjections
      if i then
       local yoffset=i.yoffset
       if yoffset and yoffset~=0 then
        setoffsets(n,false,yoffset)
       end
       local leftkern=i.leftkern
       if leftkern and leftkern~=0 then
        pre=insert_node_before(pre,n,fontkern(leftkern))
        done=true
       end
       local rightkern=i.rightkern
       if rightkern and rightkern~=0 then
        insert_node_after(pre,n,fontkern(rightkern))
        done=true
       end
      end
     end
    end
   end
   if post then
    for n in nextchar,post do
     local p=rawget(properties,n)
     if p then
      local i=p.injections or p.postinjections
      if i then
       local yoffset=i.yoffset
       if yoffset and yoffset~=0 then
        setoffsets(n,false,yoffset)
       end
       local leftkern=i.leftkern
       if leftkern and leftkern~=0 then
        post=insert_node_before(post,n,fontkern(leftkern))
        done=true
       end
       local rightkern=i.rightkern
       if rightkern and rightkern~=0 then
        insert_node_after(post,n,fontkern(rightkern))
        done=true
       end
      end
     end
    end
   end
   if replace then
    for n in nextchar,replace do
     local p=rawget(properties,n)
     if p then
      local i=p.injections or p.replaceinjections
      if i then
       local yoffset=i.yoffset
       if yoffset and yoffset~=0 then
        setoffsets(n,false,yoffset)
       end
       local leftkern=i.leftkern
       if leftkern and leftkern~=0 then
        replace=insert_node_before(replace,n,fontkern(leftkern))
        done=true
       end
       local rightkern=i.rightkern
       if rightkern and rightkern~=0 then
        insert_node_after(replace,n,fontkern(rightkern))
        done=true
       end
      end
     end
    end
   end
   if prevglyph then
    if pre then
     local p=rawget(properties,prevglyph)
     if p then
      local i=p.preinjections
      if i then
       local rightkern=i.rightkern
       if rightkern and rightkern~=0 then
        pre=insert_node_before(pre,pre,fontkern(rightkern))
        done=true
       end
      end
     end
    end
    if replace then
     local p=rawget(properties,prevglyph)
     if p then
      local i=p.replaceinjections
      if i then
       local rightkern=i.rightkern
       if rightkern and rightkern~=0 then
        replace=insert_node_before(replace,replace,fontkern(rightkern))
        done=true
       end
      end
     end
    end
   end
   if done then
    setdisc(current,pre,post,replace)
   end
   prevglyph=nil
   prevdisc=current
  else
   prevglyph=nil
   prevdisc=nil
  end
  prev=current
  current=next
 end
 if keepregisteredcounts then
  keepregisteredcounts=false
 else
  nofregisteredpositions=0
 end
 if trace_injections then
  show_result(head)
 end
 return head
end
local function showoffset(n,flag)
 local x,y=getoffsets(n)
 if x~=0 or y~=0 then
  setcolor(n,"darkgray")
 end
end
local function inject_everything(head,where)
 if trace_injections then
  trace(head,"everything")
 end
 local hascursives=nofregisteredcursives>0
 local hasmarks=nofregisteredmarks>0
 local current=head
 local last=nil
 local prev=nil
 local next=nil
 local prevdisc=nil
 local prevglyph=nil
 local pre=nil 
 local post=nil 
 local replace=nil 
 local pretail=nil 
 local posttail=nil 
 local replacetail=nil
 local cursiveanchor=nil
 local minc=0
 local maxc=0
 local glyphs={}
 local marks={}
 local nofmarks=0
 local function processmark(p,n,pn) 
  local px,py=getoffsets(p)
  local nx,ny=getoffsets(n)
  local ox=0
  local rightkern=nil
  local pp=rawget(properties,p)
  if pp then
   pp=pp.injections
   if pp then
    rightkern=pp.rightkern
   end
  end
  local markdir=pn.markdir
  if rightkern then 
   ox=px-(pn.markx or 0)-rightkern
   if markdir and markdir<0 then
    if not pn.markmark then
     ox=ox+(pn.leftkern or 0)
    end
   else
    if false then
     local leftkern=pp.leftkern
     if leftkern then
      ox=ox-leftkern
     end
    end
   end
  else
   ox=px-(pn.markx or 0)
   if markdir and markdir<0 then
    if not pn.markmark then
     local leftkern=pn.leftkern
     if leftkern then
      ox=ox+leftkern 
     end
    end
   end
   if pn.checkmark then
    local wn=getwidth(n) 
    if wn and wn~=0 then
     wn=wn/2
     if trace_injections then
      report_injections("correcting non zero width mark %C",getchar(n))
     end
     insert_node_before(n,n,fontkern(-wn))
     insert_node_after(n,n,fontkern(-wn))
    end
   end
  end
  local oy=ny+py+(pn.marky or 0)
  if not pn.markmark then
   local yoffset=pn.yoffset
   if yoffset then
    oy=oy+yoffset 
   end
  end
  setoffsets(n,ox,oy)
  if trace_marks then
   showoffset(n,true)
  end
 end
 while current do
  local next=getnext(current)
  local char,id=ischar(current)
  if char then
   local p=rawget(properties,current)
   if p then
    local i=p.injections
    if i then
     local pm=i.markbasenode
     if pm then
      nofmarks=nofmarks+1
      marks[nofmarks]=current
     else
      local yoffset=i.yoffset
      if yoffset and yoffset~=0 then
       setoffsets(current,false,yoffset)
      end
      if hascursives then
       local cursivex=i.cursivex
       if cursivex then
        if cursiveanchor then
         if cursivex~=0 then
          i.leftkern=(i.leftkern or 0)+cursivex
         end
         if maxc==0 then
          minc=1
          maxc=1
          glyphs[1]=cursiveanchor
         else
          maxc=maxc+1
          glyphs[maxc]=cursiveanchor
         end
         properties[cursiveanchor].cursivedy=i.cursivey 
         last=current
        else
         maxc=0
        end
       elseif maxc>0 then
        local nx,ny=getoffsets(current)
        for i=maxc,minc,-1 do
         local ti=glyphs[i]
         ny=ny+properties[ti].cursivedy
         setoffsets(ti,false,ny) 
         if trace_cursive then
          showoffset(ti)
         end
        end
        maxc=0
        cursiveanchor=nil
       end
       if i.cursiveanchor then
        cursiveanchor=current 
       else
        if maxc>0 then
         local nx,ny=getoffsets(current)
         for i=maxc,minc,-1 do
          local ti=glyphs[i]
          ny=ny+properties[ti].cursivedy
          setoffsets(ti,false,ny) 
          if trace_cursive then
           showoffset(ti)
          end
         end
         maxc=0
        end
        cursiveanchor=nil
       end
      end
      local leftkern=i.leftkern
      local rightkern=i.rightkern
      if leftkern and leftkern~=0 then
       if rightkern and leftkern==-rightkern then
        setoffsets(current,leftkern,false)
        rightkern=0
       elseif prev and getid(prev)==glue_code then
        if useitalickerns then
         head=insert_node_before(head,current,italickern(leftkern))
        else
         setwidth(prev,getwidth(prev)+leftkern)
        end
       else
        head=insert_node_before(head,current,fontkern(leftkern))
       end
      end
      if rightkern and rightkern~=0 then
       if next and getid(next)==glue_code then
        if useitalickerns then
         insert_node_after(head,current,italickern(rightkern))
        else
         setwidth(next,getwidth(next)+rightkern)
        end
       else
        insert_node_after(head,current,fontkern(rightkern))
       end
      end
     end
    else
     local i=p.emptyinjections
     if i then
      local rightkern=i.rightkern
      if rightkern and rightkern~=0 then
       if next and getid(next)==disc_code then
        if replace then
        else
         replace=fontkern(rightkern)
         done=true
        end
       end
      end
     end
    end
    if prevdisc then
     if p then
      local done=false
      if post then
       local i=p.postinjections
       if i then
        local leftkern=i.leftkern
        if leftkern and leftkern~=0 then
         setlink(posttail,fontkern(leftkern))
         done=true
        end
       end
      end
      if replace then
       local i=p.replaceinjections
       if i then
        local leftkern=i.leftkern
        if leftkern and leftkern~=0 then
         setlink(replacetail,fontkern(leftkern))
         done=true
        end
       end
      else
       local i=p.emptyinjections
       if i then
        local leftkern=i.leftkern
        if leftkern and leftkern~=0 then
         replace=fontkern(leftkern)
         done=true
        end
       end
      end
      if done then
       setdisc(prevdisc,pre,post,replace)
      end
     end
    end
   else
    if hascursives and maxc>0 then
     local nx,ny=getoffsets(current)
     for i=maxc,minc,-1 do
      local ti=glyphs[i]
      ny=ny+properties[ti].cursivedy
      local xi,yi=getoffsets(ti)
      setoffsets(ti,xi,yi+ny) 
     end
     maxc=0
     cursiveanchor=nil
    end
   end
   prevdisc=nil
   prevglyph=current
  elseif char==false then
   prevdisc=nil
   prevglyph=current
  elseif id==disc_code then
   pre,post,replace,pretail,posttail,replacetail=getdisc(current,true)
   local done=false
   if pre then
    for n in nextchar,pre do
     local p=rawget(properties,n)
     if p then
      local i=p.injections or p.preinjections
      if i then
       local yoffset=i.yoffset
       if yoffset and yoffset~=0 then
        setoffsets(n,false,yoffset)
       end
       local leftkern=i.leftkern
       if leftkern and leftkern~=0 then
        pre=insert_node_before(pre,n,fontkern(leftkern))
        done=true
       end
       local rightkern=i.rightkern
       if rightkern and rightkern~=0 then
        insert_node_after(pre,n,fontkern(rightkern))
        done=true
       end
       if hasmarks then
        local pm=i.markbasenode
        if pm then
         processmark(pm,n,i)
        end
       end
      end
     end
    end
   end
   if post then
    for n in nextchar,post do
     local p=rawget(properties,n)
     if p then
      local i=p.injections or p.postinjections
      if i then
       local yoffset=i.yoffset
       if yoffset and yoffset~=0 then
        setoffsets(n,false,yoffset)
       end
       local leftkern=i.leftkern
       if leftkern and leftkern~=0 then
        post=insert_node_before(post,n,fontkern(leftkern))
        done=true
       end
       local rightkern=i.rightkern
       if rightkern and rightkern~=0 then
        insert_node_after(post,n,fontkern(rightkern))
        done=true
       end
       if hasmarks then
        local pm=i.markbasenode
        if pm then
         processmark(pm,n,i)
        end
       end
      end
     end
    end
   end
   if replace then
    for n in nextchar,replace do
     local p=rawget(properties,n)
     if p then
      local i=p.injections or p.replaceinjections
      if i then
       local yoffset=i.yoffset
       if yoffset and yoffset~=0 then
        setoffsets(n,false,yoffset)
       end
       local leftkern=i.leftkern
       if leftkern and leftkern~=0 then
        replace=insert_node_before(replace,n,fontkern(leftkern))
        done=true
       end
       local rightkern=i.rightkern
       if rightkern and rightkern~=0 then
        insert_node_after(replace,n,fontkern(rightkern))
        done=true
       end
       if hasmarks then
        local pm=i.markbasenode
        if pm then
         processmark(pm,n,i)
        end
       end
      end
     end
    end
   end
   if prevglyph then
    if pre then
     local p=rawget(properties,prevglyph)
     if p then
      local i=p.preinjections
      if i then
       local rightkern=i.rightkern
       if rightkern and rightkern~=0 then
        pre=insert_node_before(pre,pre,fontkern(rightkern))
        done=true
       end
      end
     end
    end
    if replace then
     local p=rawget(properties,prevglyph)
     if p then
      local i=p.replaceinjections
      if i then
       local rightkern=i.rightkern
       if rightkern and rightkern~=0 then
        replace=insert_node_before(replace,replace,fontkern(rightkern))
        done=true
       end
      end
     end
    end
   end
   if done then
    setdisc(current,pre,post,replace)
   end
   prevglyph=nil
   prevdisc=current
  else
   prevglyph=nil
   prevdisc=nil
  end
  prev=current
  current=next
 end
 if hascursives and maxc>0 then
  local nx,ny=getoffsets(last)
  for i=maxc,minc,-1 do
   local ti=glyphs[i]
   ny=ny+properties[ti].cursivedy
   setoffsets(ti,false,ny) 
   if trace_cursive then
    showoffset(ti)
   end
  end
 end
 if nofmarks>0 then
  for i=1,nofmarks do
   local m=marks[i]
   local p=rawget(properties,m)
   local i=p.injections
   local b=i.markbasenode
   processmark(b,m,i)
  end
 elseif hasmarks then
 end
 if keepregisteredcounts then
  keepregisteredcounts=false
 else
  nofregisteredkerns=0
  nofregisteredpositions=0
  nofregisteredmarks=0
  nofregisteredcursives=0
 end
 if trace_injections then
  show_result(head)
 end
 return head
end
local triggers=false
function nodes.injections.setspacekerns(font,sequence)
 if triggers then
  triggers[font]=sequence
 else
  triggers={ [font]=sequence }
 end
end
local getthreshold
if context then

--removed

else
 injections.threshold=0
 getthreshold=function(font)
  local p=fontdata[font].parameters
  local f=p.factor
  local s=p.spacing
  local t=injections.threshold*(s and s.width or p.space or 0)-2
  return t>0 and t or 0,f
 end
end
injections.getthreshold=getthreshold
function injections.isspace(n,threshold,id)
 if (id or getid(n))==glue_code then
  local w=getwidth(n)
  if threshold and w>threshold then 
   return 32
  end
 end
end
local getspaceboth=getboth
function injections.installgetspaceboth(gb)
 getspaceboth=gb or getboth
end
local function injectspaces(head)
 if not triggers then
  return head
 end
 local lastfont=nil
 local spacekerns=nil
 local leftkerns=nil
 local rightkerns=nil
 local factor=0
 local threshold=0
 local leftkern=false
 local rightkern=false
 local function updatefont(font,trig)
  leftkerns=trig.left
  rightkerns=trig.right
  lastfont=font
  threshold,
  factor=getthreshold(font)
 end
 for n in nextglue,head do
  local prev,next=getspaceboth(n)
  local prevchar=prev and ischar(prev)
  local nextchar=next and ischar(next)
  if nextchar then
   local font=getfont(next)
   local trig=triggers[font]
   if trig then
    if lastfont~=font then
     updatefont(font,trig)
    end
    if rightkerns then
     rightkern=rightkerns[nextchar]
    end
   end
  end
  if prevchar then
   local font=getfont(prev)
   local trig=triggers[font]
   if trig then
    if lastfont~=font then
     updatefont(font,trig)
    end
    if leftkerns then
     leftkern=leftkerns[prevchar]
    end
   end
  end
  if leftkern then
   local old=getwidth(n)
   if old>threshold then
    if rightkern then
     if useitalickerns then
      local lnew=leftkern*factor
      local rnew=rightkern*factor
      if trace_spaces then
       report_spaces("%C [%p + %p + %p] %C",prevchar,lnew,old,rnew,nextchar)
      end
      head=insert_node_before(head,n,italickern(lnew))
      insert_node_after(head,n,italickern(rnew))
     else
      local new=old+(leftkern+rightkern)*factor
      if trace_spaces then
       report_spaces("%C [%p -> %p] %C",prevchar,old,new,nextchar)
      end
      setwidth(n,new)
     end
     rightkern=false
    else
     if useitalickerns then
      local new=leftkern*factor
      if trace_spaces then
       report_spaces("%C [%p + %p]",prevchar,old,new)
      end
      insert_node_after(head,n,italickern(new)) 
     else
      local new=old+leftkern*factor
      if trace_spaces then
       report_spaces("%C [%p -> %p]",prevchar,old,new)
      end
      setwidth(n,new)
     end
    end
   end
   leftkern=false
  elseif rightkern then
   local old=getwidth(n)
   if old>threshold then
    if useitalickerns then
     local new=rightkern*factor
     if trace_spaces then
      report_spaces("[%p + %p] %C",old,new,nextchar)
     end
     insert_node_after(head,n,italickern(new))
    else
     local new=old+rightkern*factor
     if trace_spaces then
      report_spaces("[%p -> %p] %C",old,new,nextchar)
     end
     setwidth(n,new)
    end
   else
   end
   rightkern=false
  end
 end
 triggers=false
 return head
end
function injections.handler(head,where)
 if triggers then
  head=injectspaces(head)
 end
 if nofregisteredmarks>0 or nofregisteredcursives>0 then
  if trace_injections then
   report_injections("injection variant %a","everything")
  end
  return inject_everything(head,where)
 elseif nofregisteredpositions>0 then
  if trace_injections then
   report_injections("injection variant %a","positions")
  end
  return inject_positions_only(head,where)
 elseif nofregisteredkerns>0 then
  if trace_injections then
   report_injections("injection variant %a","kerns")
  end
  return inject_kerns_only(head,where)
 else
  return head
 end
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['font-ota']={
 version=1.001,
 comment="companion to font-ini.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
local type=type
if not trackers then trackers={ register=function() end } end
local fonts,nodes,node=fonts,nodes,node
local allocate=utilities.storage.allocate
local otf=fonts.handlers.otf
local analyzers=fonts.analyzers
local initializers=allocate()
local methods=allocate()
analyzers.initializers=initializers
analyzers.methods=methods
local nuts=nodes.nuts
local tonut=nuts.tonut
local getnext=nuts.getnext
local getprev=nuts.getprev
local getprev=nuts.getprev
local getprop=nuts.getprop
local setprop=nuts.setprop
local getsubtype=nuts.getsubtype
local getchar=nuts.getchar
local ischar=nuts.ischar
local end_of_math=nuts.end_of_math
local nodecodes=nodes.nodecodes
local disc_code=nodecodes.disc
local math_code=nodecodes.math
local fontdata=fonts.hashes.identifiers
local categories=characters and characters.categories or {} 
local chardata=characters and characters.data
local otffeatures=fonts.constructors.features.otf
local registerotffeature=otffeatures.register
local setstate=nuts.setstate
local getstate=nuts.getstate
if not setstate or not getstate then
 setstate=function(n,v)
  setprop(n,"state",v)
 end
 getstate=function(n,v)
  local s=getprop(n,"state")
  if v then
   return s==v
  else
   return s
  end
 end
 nuts.setstate=setstate
 nuts.getstate=getstate
end
local s_init=1 local s_rphf=7
local s_medi=2 local s_half=8
local s_fina=3 local s_pref=9
local s_isol=4 local s_blwf=10
local s_mark=5 local s_pstf=11
local s_rest=6
local states=allocate {
 init=s_init,
 medi=s_medi,
 med2=s_medi,
 fina=s_fina,
 fin2=s_fina,
 fin3=s_fina,
 isol=s_isol,
 mark=s_mark,
 rest=s_rest,
 rphf=s_rphf,
 half=s_half,
 pref=s_pref,
 blwf=s_blwf,
 pstf=s_pstf,
}
local features=allocate {
 init=s_init,
 medi=s_medi,
 med2=s_medi,
 fina=s_fina,
 fin2=s_fina,
 fin3=s_fina,
 isol=s_isol,
 rphf=s_rphf,
 half=s_half,
 pref=s_pref,
 blwf=s_blwf,
 pstf=s_pstf,
}
analyzers.states=states
analyzers.features=features
analyzers.useunicodemarks=false
function analyzers.setstate(head,font)
 local useunicodemarks=analyzers.useunicodemarks
 local tfmdata=fontdata[font]
 local descriptions=tfmdata.descriptions
 local first,last,current,n,done=nil,nil,head,0,false 
 current=tonut(current)
 while current do
  local char,id=ischar(current,font)
  if char and not getstate(current) then
   done=true
   local d=descriptions[char]
   if d then
    if d.class=="mark" then
     done=true
     setstate(current,s_mark)
    elseif useunicodemarks and categories[char]=="mn" then
     done=true
     setstate(current,s_mark)
    elseif n==0 then
     first,last,n=current,current,1
     setstate(current,s_init)
    else
     last,n=current,n+1
     setstate(current,s_medi)
    end
   else 
    if first and first==last then
     setstate(last,s_isol)
    elseif last then
     setstate(last,s_fina)
    end
    first,last,n=nil,nil,0
   end
  elseif char==false then
   if first and first==last then
    setstate(last,s_isol)
   elseif last then
    setstate(last,s_fina)
   end
   first,last,n=nil,nil,0
   if id==math_code then
    current=end_of_math(current)
   end
  elseif id==disc_code then
   setstate(current,s_medi)
   last=current
  else 
   if first and first==last then
    setstate(last,s_isol)
   elseif last then
    setstate(last,s_fina)
   end
   first,last,n=nil,nil,0
   if id==math_code then
    current=end_of_math(current)
   end
  end
  current=getnext(current)
 end
 if first and first==last then
  setstate(last,s_isol)
 elseif last then
  setstate(last,s_fina)
 end
 return head,done
end
local function analyzeinitializer(tfmdata,value) 
 local script,language=otf.scriptandlanguage(tfmdata) 
 local action=initializers[script]
 if not action then
 elseif type(action)=="function" then
  return action(tfmdata,value)
 else
  local action=action[language]
  if action then
   return action(tfmdata,value)
  end
 end
end
local function analyzeprocessor(head,font,attr)
 local tfmdata=fontdata[font]
 local script,language=otf.scriptandlanguage(tfmdata,attr)
 local action=methods[script]
 if not action then
 elseif type(action)=="function" then
  return action(head,font,attr)
 else
  action=action[language]
  if action then
   return action(head,font,attr)
  end
 end
 return head,false
end
registerotffeature {
 name="analyze",
 description="analysis of character classes",
 default=true,
 initializers={
  node=analyzeinitializer,
 },
 processors={
  position=1,
  node=analyzeprocessor,
 }
}
methods.latn=analyzers.setstate
local arab_warned={}
local function warning(current,what)
 local char=getchar(current)
 if not arab_warned[char] then
  log.report("analyze","arab: character %C has no %a class",char,what)
  arab_warned[char]=true
 end
end
local mappers=allocate {
 l=s_init,
 d=s_medi,
 c=s_medi,
 r=s_fina,
 u=s_isol,
}
local classifiers=characters.classifiers
if not classifiers then
 local f_arabic,l_arabic=characters.blockrange("arabic")
 local f_syriac,l_syriac=characters.blockrange("syriac")
 local f_mandiac,l_mandiac=characters.blockrange("mandiac")
 local f_nko,l_nko=characters.blockrange("nko")
 local f_ext_a,l_ext_a=characters.blockrange("arabicextendeda")
 classifiers=table.setmetatableindex(function(t,k)
  if type(k)=="number" then
   local c=chardata[k]
   local v=false
   if c then
    local arabic=c.arabic
    if arabic then
     v=mappers[arabic]
     if not v then
      log.report("analyze","error in mapping arabic %C",k)
      v=false
     end
    elseif (k>=f_arabic  and k<=l_arabic)  or
        (k>=f_syriac  and k<=l_syriac)  or
        (k>=f_mandiac and k<=l_mandiac) or
        (k>=f_nko  and k<=l_nko)  or
        (k>=f_ext_a   and k<=l_ext_a)   then
     if categories[k]=="mn" then
      v=s_mark
     else
      v=s_rest
     end
    end
   end
   t[k]=v
   return v
  end
 end)
 characters.classifiers=classifiers
end
function methods.arab(head,font,attr)
 local first,last,c_first,c_last
 local current=head
 local done=false
 current=tonut(current)
 while current do
  local char,id=ischar(current,font)
  if char and not getstate(current) then
   done=true
   local classifier=classifiers[char]
   if not classifier then
    if last then
     if c_last==s_medi or c_last==s_fina then
      setstate(last,s_fina)
     else
      warning(last,"fina")
      setstate(last,s_error)
     end
     first,last=nil,nil
    elseif first then
     if c_first==s_medi or c_first==s_fina then
      setstate(first,s_isol)
     else
      warning(first,"isol")
      setstate(first,s_error)
     end
     first=nil
    end
   elseif classifier==s_mark then
    setstate(current,s_mark)
   elseif classifier==s_isol then
    if last then
     if c_last==s_medi or c_last==s_fina then
      setstate(last,s_fina)
     else
      warning(last,"fina")
      setstate(last,s_error)
     end
     first,last=nil,nil
    elseif first then
     if c_first==s_medi or c_first==s_fina then
      setstate(first,s_isol)
     else
      warning(first,"isol")
      setstate(first,s_error)
     end
     first=nil
    end
    setstate(current,s_isol)
   elseif classifier==s_medi then
    if first then
     last=current
     c_last=classifier
     setstate(current,s_medi)
    else
     setstate(current,s_init)
     first=current
     c_first=classifier
    end
   elseif classifier==s_fina then
    if last then
     if getstate(last)~=s_init then
      setstate(last,s_medi)
     end
     setstate(current,s_fina)
     first,last=nil,nil
    elseif first then
     setstate(current,s_fina)
     first=nil
    else
     setstate(current,s_isol)
    end
   else 
    setstate(current,s_rest)
    if last then
     if c_last==s_medi or c_last==s_fina then
      setstate(last,s_fina)
     else
      warning(last,"fina")
      setstate(last,s_error)
     end
     first,last=nil,nil
    elseif first then
     if c_first==s_medi or c_first==s_fina then
      setstate(first,s_isol)
     else
      warning(first,"isol")
      setstate(first,s_error)
     end
     first=nil
    end
   end
  else
   if last then
    if c_last==s_medi or c_last==s_fina then
     setstate(last,s_fina)
    else
     warning(last,"fina")
     setstate(last,s_error)
    end
    first,last=nil,nil
   elseif first then
    if c_first==s_medi or c_first==s_fina then
     setstate(first,s_isol)
    else
     warning(first,"isol")
     setstate(first,s_error)
    end
    first=nil
   end
   if id==math_code then 
    current=end_of_math(current)
   end
  end
  current=getnext(current)
 end
 if last then
  if c_last==s_medi or c_last==s_fina then
   setstate(last,s_fina)
  else
   warning(last,"fina")
   setstate(last,s_error)
  end
 elseif first then
  if c_first==s_medi or c_first==s_fina then
   setstate(first,s_isol)
  else
   warning(first,"isol")
   setstate(first,s_error)
  end
 end
 return head,done
end
methods.syrc=methods.arab
methods.mand=methods.arab
methods.nko=methods.arab
directives.register("otf.analyze.useunicodemarks",function(v)
 analyzers.useunicodemarks=v
end)

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['font-ots']={ 
 version=1.001,
 comment="companion to font-ini.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files",
}
local type,next,tonumber=type,next,tonumber
local random=math.random
local formatters=string.formatters
local insert=table.insert
local registertracker=trackers.register
local logs=logs
local trackers=trackers
local nodes=nodes
local attributes=attributes
local fonts=fonts
local otf=fonts.handlers.otf
local tracers=nodes.tracers
local trace_singles=false  registertracker("otf.singles",function(v) trace_singles=v end)
local trace_multiples=false  registertracker("otf.multiples",function(v) trace_multiples=v end)
local trace_alternatives=false  registertracker("otf.alternatives",function(v) trace_alternatives=v end)
local trace_ligatures=false  registertracker("otf.ligatures",function(v) trace_ligatures=v end)
local trace_contexts=false  registertracker("otf.contexts",function(v) trace_contexts=v end)
local trace_marks=false  registertracker("otf.marks",function(v) trace_marks=v end)
local trace_kerns=false  registertracker("otf.kerns",function(v) trace_kerns=v end)
local trace_cursive=false  registertracker("otf.cursive",function(v) trace_cursive=v end)
local trace_preparing=false  registertracker("otf.preparing",function(v) trace_preparing=v end)
local trace_bugs=false  registertracker("otf.bugs",function(v) trace_bugs=v end)
local trace_details=false  registertracker("otf.details",function(v) trace_details=v end)
local trace_steps=false  registertracker("otf.steps",function(v) trace_steps=v end)
local trace_skips=false  registertracker("otf.skips",function(v) trace_skips=v end)
local trace_plugins=false  registertracker("otf.plugins",function(v) trace_plugins=v end)
local trace_chains=false  registertracker("otf.chains",function(v) trace_chains=v end)
local trace_kernruns=false  registertracker("otf.kernruns",function(v) trace_kernruns=v end)
local trace_compruns=false  registertracker("otf.compruns",function(v) trace_compruns=v end)
local trace_testruns=false  registertracker("otf.testruns",function(v) trace_testruns=v end)
local forcediscretionaries=false
local forcepairadvance=false 
directives.register("otf.forcediscretionaries",function(v)
 forcediscretionaries=v
end)
directives.register("otf.forcepairadvance",function(v)
 forcepairadvance=v
end)
local report_direct=logs.reporter("fonts","otf direct")
local report_subchain=logs.reporter("fonts","otf subchain")
local report_chain=logs.reporter("fonts","otf chain")
local report_process=logs.reporter("fonts","otf process")
local report_warning=logs.reporter("fonts","otf warning")
local report_run=logs.reporter("fonts","otf run")
registertracker("otf.substitutions","otf.singles","otf.multiples","otf.alternatives","otf.ligatures")
registertracker("otf.positions","otf.marks","otf.kerns","otf.cursive")
registertracker("otf.actions","otf.substitutions","otf.positions")
registertracker("otf.sample","otf.steps","otf.substitutions","otf.positions","otf.analyzing")
registertracker("otf.sample.silent","otf.steps=silent","otf.substitutions","otf.positions","otf.analyzing")
local nuts=nodes.nuts
local getnext=nuts.getnext
local setnext=nuts.setnext
local getprev=nuts.getprev
local setprev=nuts.setprev
local getboth=nuts.getboth
local setboth=nuts.setboth
local getid=nuts.getid
local getstate=nuts.getstate
local getsubtype=nuts.getsubtype
local setsubtype=nuts.setsubtype
local getchar=nuts.getchar
local setchar=nuts.setchar
local getdisc=nuts.getdisc
local setdisc=nuts.setdisc
local getreplace=nuts.getreplace
local setlink=nuts.setlink
local getwidth=nuts.getwidth
local getattr=nuts.getattr
local getglyphdata=nuts.getglyphdata
local copy_no_components=nuts.copy_no_components
local copy_only_glyphs=nuts.copy_only_glyphs
local count_components=nuts.count_components
local set_components=nuts.set_components
local get_components=nuts.get_components
local ischar=nuts.ischar
local usesfont=nuts.uses_font
local insert_node_after=nuts.insert_after
local copy_node=nuts.copy
local copy_node_list=nuts.copy_list
local remove_node=nuts.remove
local find_node_tail=nuts.tail
local flush_node_list=nuts.flush_list
local flush_node=nuts.flush_node
local end_of_math=nuts.end_of_math
local start_of_par=nuts.start_of_par
local setmetatable=setmetatable
local setmetatableindex=table.setmetatableindex
local nextnode=nuts.traversers.node
local nodecodes=nodes.nodecodes
local glyphcodes=nodes.glyphcodes
local disccodes=nodes.disccodes
local glyph_code=nodecodes.glyph
local glue_code=nodecodes.glue
local disc_code=nodecodes.disc
local math_code=nodecodes.math
local dir_code=nodecodes.dir
local localpar_code=nodecodes.localpar
local discretionarydisc_code=disccodes.discretionary
local ligatureglyph_code=glyphcodes.ligature
local a_noligature=attributes.private("noligature")
local injections=nodes.injections
local setmark=injections.setmark
local setcursive=injections.setcursive
local setkern=injections.setkern
local setmove=injections.setmove
local setposition=injections.setposition
local resetinjection=injections.reset
local copyinjection=injections.copy
local setligaindex=injections.setligaindex
local getligaindex=injections.getligaindex
local fontdata=fonts.hashes.identifiers
local fontfeatures=fonts.hashes.features
local otffeatures=fonts.constructors.features.otf
local registerotffeature=otffeatures.register
local onetimemessage=fonts.loggers.onetimemessage or function() end
local getrandom=utilities and utilities.randomizer and utilities.randomizer.get
otf.defaultnodealternate="none"
local tfmdata=false
local characters=false
local descriptions=false
local marks=false
local classes=false
local currentfont=false
local factor=0
local threshold=0
local checkmarks=false
local discs=false
local spaces=false
local sweepnode=nil
local sweephead={} 
local notmatchpre={} 
local notmatchpost={} 
local notmatchreplace={} 
local handlers={}
local isspace=injections.isspace
local getthreshold=injections.getthreshold
local checkstep=(tracers and tracers.steppers.check) or function() end
local registerstep=(tracers and tracers.steppers.register) or function() end
local registermessage=(tracers and tracers.steppers.message)  or function() end
local function logprocess(...)
 if trace_steps then
  registermessage(...)
  if trace_steps=="silent" then
   return
  end
 end
 report_direct(...)
end
local function logwarning(...)
 report_direct(...)
end
local gref  do
 local f_unicode=formatters["U+%X"]   
 local f_uniname=formatters["U+%X (%s)"] 
 local f_unilist=formatters["% t"]
 gref=function(n) 
  if type(n)=="number" then
   local description=descriptions[n]
   local name=description and description.name
   if name then
    return f_uniname(n,name)
   else
    return f_unicode(n)
   end
  elseif n then
   local t={}
   for i=1,#n do
    local ni=n[i]
    if tonumber(ni) then 
     local di=descriptions[ni]
     local nn=di and di.name
     if nn then
      t[#t+1]=f_uniname(ni,nn)
     else
      t[#t+1]=f_unicode(ni)
     end
    end
   end
   return f_unilist(t)
  else
   return "<error in node mode tracing>"
  end
 end
end
local function cref(dataset,sequence,index)
 if not dataset then
  return "no valid dataset"
 end
 local merged=sequence.merged and "merged " or ""
 if index then
  return formatters["feature %a, type %a, %schain lookup %a, index %a"](
   dataset[4],sequence.type,merged,sequence.name,index)
 else
  return formatters["feature %a, type %a, %schain lookup %a"](
   dataset[4],sequence.type,merged,sequence.name)
 end
end
local function pref(dataset,sequence)
 return formatters["feature %a, type %a, %slookup %a"](
  dataset[4],sequence.type,sequence.merged and "merged " or "",sequence.name)
end
local function mref(rlmode)
 if not rlmode or rlmode>=0 then
  return "l2r"
 else
  return "r2l"
 end
end
local function flattendisk(head,disc)
 local pre,post,replace,pretail,posttail,replacetail=getdisc(disc,true)
 local prev,next=getboth(disc)
 local ishead=head==disc
 setdisc(disc)
 flush_node(disc)
 if pre then
  flush_node_list(pre)
 end
 if post then
  flush_node_list(post)
 end
 if ishead then
  if replace then
   if next then
    setlink(replacetail,next)
   end
   return replace,replace
  elseif next then
   return next,next
  else
  end
 else
  if replace then
   if next then
    setlink(replacetail,next)
   end
   setlink(prev,replace)
   return head,replace
  else
   setlink(prev,next) 
   return head,next
  end
 end
end
local function appenddisc(disc,list)
 local pre,post,replace,pretail,posttail,replacetail=getdisc(disc,true)
 local posthead=list
 local replacehead=copy_node_list(list)
 if post then
  setlink(posttail,posthead)
 else
  post=posthead
 end
 if replace then
  setlink(replacetail,replacehead)
 else
  replace=replacehead
 end
 setdisc(disc,pre,post,replace)
end
local function markstoligature(head,start,stop,char)
 if start==stop and getchar(start)==char then
  return head,start
 else
  local prev=getprev(start)
  local next=getnext(stop)
  setprev(start)
  setnext(stop)
  local base=copy_no_components(start,copyinjection)
  if head==start then
   head=base
  end
  resetinjection(base)
  setchar(base,char)
  setsubtype(base,ligatureglyph_code)
  set_components(base,start)
  setlink(prev,base,next)
  return head,base
 end
end
local function toligature(head,start,stop,char,dataset,sequence,skiphash,discfound,hasmarks) 
 if getattr(start,a_noligature)==1 then
  return head,start
 end
 if start==stop and getchar(start)==char then
  resetinjection(start)
  setchar(start,char)
  return head,start
 end
 local prev=getprev(start)
 local next=getnext(stop)
 local comp=start
 setprev(start)
 setnext(stop)
 local base=copy_no_components(start,copyinjection)
 if start==head then
  head=base
 end
 resetinjection(base)
 setchar(base,char)
 setsubtype(base,ligatureglyph_code)
 set_components(base,comp)
 setlink(prev,base,next)
 if not discfound then
  local deletemarks=not skiphash or hasmarks
  local components=start 
  local baseindex=0
  local componentindex=0
  local head=base
  local current=base
  while start do
   local char=getchar(start)
   if not marks[char] then
    baseindex=baseindex+componentindex
    componentindex=count_components(start,marks)
   elseif not deletemarks then
    setligaindex(start,baseindex+getligaindex(start,componentindex))
    if trace_marks then
     logwarning("%s: keep ligature mark %s, gets index %s",pref(dataset,sequence),gref(char),getligaindex(start))
    end
    local n=copy_node(start)
    copyinjection(n,start) 
    head,current=insert_node_after(head,current,n) 
   elseif trace_marks then
    logwarning("%s: delete ligature mark %s",pref(dataset,sequence),gref(char))
   end
   start=getnext(start)
  end
  local start=getnext(current)
  while start do
   local char=ischar(start)
   if char then
    if marks[char] then
     setligaindex(start,baseindex+getligaindex(start,componentindex))
     if trace_marks then
      logwarning("%s: set ligature mark %s, gets index %s",pref(dataset,sequence),gref(char),getligaindex(start))
     end
     start=getnext(start)
    else
     break
    end
   else
    break
   end
  end
 else
  local discprev,discnext=getboth(discfound)
  if discprev and discnext then
   local pre,post,replace,pretail,posttail,replacetail=getdisc(discfound,true)
   if not replace then
    local prev=getprev(base)
    local copied=copy_only_glyphs(comp)
    if pre then
     setlink(discprev,pre)
    else
     setnext(discprev) 
    end
    pre=comp 
    if post then
     setlink(posttail,discnext)
     setprev(post) 
    else
     post=discnext
     setprev(discnext) 
    end
    setlink(prev,discfound,next)
    setboth(base)
    set_components(base,copied)
    replace=base
    if forcediscretionaries then
     setdisc(discfound,pre,post,replace,discretionarydisc_code)
    else
     setdisc(discfound,pre,post,replace)
    end
    base=prev
   end
  end
 end
 return head,base
end
local function multiple_glyphs(head,start,multiple,skiphash,what,stop) 
 local nofmultiples=#multiple
 if nofmultiples>0 then
  resetinjection(start)
  setchar(start,multiple[1])
  if nofmultiples>1 then
   local sn=getnext(start)
   for k=2,nofmultiples do
    local n=copy_node(start) 
    resetinjection(n)
    setchar(n,multiple[k])
    insert_node_after(head,start,n)
    start=n
   end
   if what==true then
   elseif what>1 then
    local m=multiple[nofmultiples]
    for i=2,what do
     local n=copy_node(start) 
     resetinjection(n)
     setchar(n,m)
     insert_node_after(head,start,n)
     start=n
    end
   end
  end
  return head,start,true
 else
  if trace_multiples then
   logprocess("no multiple for %s",gref(getchar(start)))
  end
  return head,start,false
 end
end
local function get_alternative_glyph(start,alternatives,value)
 local n=#alternatives
 if n==1 then
  return alternatives[1],trace_alternatives and "1 (only one present)"
 elseif value=="random" then
  local r=getrandom and getrandom("glyph",1,n) or random(1,n)
  return alternatives[r],trace_alternatives and formatters["value %a, taking %a"](value,r)
 elseif value=="first" then
  return alternatives[1],trace_alternatives and formatters["value %a, taking %a"](value,1)
 elseif value=="last" then
  return alternatives[n],trace_alternatives and formatters["value %a, taking %a"](value,n)
 end
 value=value==true and 1 or tonumber(value)
 if type(value)~="number" then
  return alternatives[1],trace_alternatives and formatters["invalid value %s, taking %a"](value,1)
 end
 if value>n then
  local defaultalt=otf.defaultnodealternate
  if defaultalt=="first" then
   return alternatives[n],trace_alternatives and formatters["invalid value %s, taking %a"](value,1)
  elseif defaultalt=="last" then
   return alternatives[1],trace_alternatives and formatters["invalid value %s, taking %a"](value,n)
  else
   return false,trace_alternatives and formatters["invalid value %a, %s"](value,"out of range")
  end
 elseif value==0 then
  return getchar(start),trace_alternatives and formatters["invalid value %a, %s"](value,"no change")
 elseif value<1 then
  return alternatives[1],trace_alternatives and formatters["invalid value %a, taking %a"](value,1)
 else
  return alternatives[value],trace_alternatives and formatters["value %a, taking %a"](value,value)
 end
end
function handlers.gsub_single(head,start,dataset,sequence,replacement)
 if trace_singles then
  logprocess("%s: replacing %s by single %s",pref(dataset,sequence),gref(getchar(start)),gref(replacement))
 end
 resetinjection(start)
 setchar(start,replacement)
 return head,start,true
end
function handlers.gsub_alternate(head,start,dataset,sequence,alternative)
 local kind=dataset[4]
 local what=dataset[1]
 local value=what==true and tfmdata.shared.features[kind] or what
 local choice,comment=get_alternative_glyph(start,alternative,value)
 if choice then
  if trace_alternatives then
   logprocess("%s: replacing %s by alternative %a to %s, %s",pref(dataset,sequence),gref(getchar(start)),gref(choice),comment)
  end
  resetinjection(start)
  setchar(start,choice)
 else
  if trace_alternatives then
   logwarning("%s: no variant %a for %s, %s",pref(dataset,sequence),value,gref(getchar(start)),comment)
  end
 end
 return head,start,true
end
function handlers.gsub_multiple(head,start,dataset,sequence,multiple,rlmode,skiphash)
 if trace_multiples then
  logprocess("%s: replacing %s by multiple %s",pref(dataset,sequence),gref(getchar(start)),gref(multiple))
 end
 return multiple_glyphs(head,start,multiple,skiphash,dataset[1])
end
function handlers.gsub_ligature(head,start,dataset,sequence,ligature,rlmode,skiphash)
 local current=getnext(start)
 if not current then
  return head,start,false,nil
 end
 local stop=nil
 local startchar=getchar(start)
 if skiphash and skiphash[startchar] then
  while current do
   local char=ischar(current,currentfont)
   if char then
    local lg=ligature[char]
    if lg then
     stop=current
     ligature=lg
     current=getnext(current)
    else
     break
    end
   else
    break
   end
  end
  if stop then
   local lig=ligature.ligature
   if lig then
    if trace_ligatures then
     local stopchar=getchar(stop)
     head,start=markstoligature(head,start,stop,lig)
     logprocess("%s: replacing %s upto %s by ligature %s case 1",pref(dataset,sequence),gref(startchar),gref(stopchar),gref(getchar(start)))
    else
     head,start=markstoligature(head,start,stop,lig)
    end
    return head,start,true,false
   else
   end
  end
 else
  local discfound=false
  local hasmarks=marks[startchar]
  while current do
   local char,id=ischar(current,currentfont)
   if char then
    if skiphash and skiphash[char] then
     current=getnext(current)
    else
     local lg=ligature[char]
     if lg then
      if marks[char] then
       hasmarks=true
      end
      stop=current 
      ligature=lg
      current=getnext(current)
     else
      break
     end
    end
   elseif char==false then
    break
   elseif id==disc_code then
    discfound=current
    break
   else
    break
   end
  end
  if discfound then
   local pre,post,replace=getdisc(discfound)
   local match
   if replace then
    local char=ischar(replace,currentfont)
    if char and ligature[char] then
     match=true
    end
   end
   if not match and pre then
    local char=ischar(pre,currentfont)
    if char and ligature[char] then
     match=true
    end
   end
   if not match and not pre or not replace then
    local n=getnext(discfound)
    local char=ischar(n,currentfont)
    if char and ligature[char] then
     match=true
    end
   end
   if match then
    local ishead=head==start
    local prev=getprev(start)
    if stop then
     setnext(stop)
     local copy=copy_node_list(start)
     local tail=stop 
     local liat=find_node_tail(copy)
     if pre then
      setlink(liat,pre)
     end
     if replace then
      setlink(tail,replace)
     end
     pre=copy
     replace=start
    else
     setnext(start)
     local copy=copy_node(start)
     if pre then
      setlink(copy,pre)
     end
     if replace then
      setlink(start,replace)
     end
     pre=copy
     replace=start
    end
    setdisc(discfound,pre,post,replace)
    if prev then
     setlink(prev,discfound)
    else
     setprev(discfound)
     head=discfound
    end
    start=discfound
    return head,start,true,true
   end
  end
  local lig=ligature.ligature
  if lig then
   if stop then
    if trace_ligatures then
     local stopchar=getchar(stop)
     head,start=toligature(head,start,stop,lig,dataset,sequence,skiphash,false,hasmarks)
     logprocess("%s: replacing %s upto %s by ligature %s case 2",pref(dataset,sequence),gref(startchar),gref(stopchar),gref(lig))
    else
     head,start=toligature(head,start,stop,lig,dataset,sequence,skiphash,false,hasmarks)
    end
   else
    resetinjection(start)
    setchar(start,lig)
    if trace_ligatures then
     logprocess("%s: replacing %s by (no real) ligature %s case 3",pref(dataset,sequence),gref(startchar),gref(lig))
    end
   end
   return head,start,true,false
  else
  end
 end
 return head,start,false,false
end
function handlers.gpos_single(head,start,dataset,sequence,kerns,rlmode,skiphash,step,injection)
 local startchar=getchar(start)
 local format=step.format
 if format=="single" or type(kerns)=="table" then 
  local dx,dy,w,h=setposition(0,start,factor,rlmode,kerns,injection)
  if trace_kerns then
   logprocess("%s: shifting single %s by %s xy (%p,%p) and wh (%p,%p)",pref(dataset,sequence),gref(startchar),format,dx,dy,w,h)
  end
 else
  local k=(format=="move" and setmove or setkern)(start,factor,rlmode,kerns,injection)
  if trace_kerns then
   logprocess("%s: shifting single %s by %s %p",pref(dataset,sequence),gref(startchar),format,k)
  end
 end
 return head,start,true
end
function handlers.gpos_pair(head,start,dataset,sequence,kerns,rlmode,skiphash,step,injection)
 local snext=getnext(start)
 if not snext then
  return head,start,false
 else
  local prev=start
  while snext do
   local nextchar=ischar(snext,currentfont)
   if nextchar then
    if skiphash and skiphash[nextchar] then 
     prev=snext
     snext=getnext(snext)
    else
     local krn=kerns[nextchar]
     if not krn then
      break
     end
     local format=step.format
     if format=="pair" then
      local a=krn[1]
      local b=krn[2]
      if a==true then
      elseif a then 
       local x,y,w,h=setposition(1,start,factor,rlmode,a,injection)
       if trace_kerns then
        local startchar=getchar(start)
        logprocess("%s: shifting first of pair %s and %s by xy (%p,%p) and wh (%p,%p) as %s",pref(dataset,sequence),gref(startchar),gref(nextchar),x,y,w,h,injection or "injections")
       end
      end
      if b==true then
       start=snext 
      elseif b then 
       local x,y,w,h=setposition(2,snext,factor,rlmode,b,injection)
       if trace_kerns then
        local startchar=getchar(start)
        logprocess("%s: shifting second of pair %s and %s by xy (%p,%p) and wh (%p,%p) as %s",pref(dataset,sequence),gref(startchar),gref(nextchar),x,y,w,h,injection or "injections")
       end
       start=snext 
      elseif forcepairadvance then
       start=snext 
      end
      return head,start,true
     elseif krn~=0 then
      local k=(format=="move" and setmove or setkern)(snext,factor,rlmode,krn,injection)
      if trace_kerns then
       logprocess("%s: inserting %s %p between %s and %s as %s",pref(dataset,sequence),format,k,gref(getchar(prev)),gref(nextchar),injection or "injections")
      end
      return head,start,true
     else 
      break
     end
    end
   else
    break
   end
  end
  return head,start,false
 end
end
function handlers.gpos_mark2base(head,start,dataset,sequence,markanchors,rlmode,skiphash)
 local markchar=getchar(start)
 if marks[markchar] then
  local base=getprev(start) 
  if base then
   local basechar=ischar(base,currentfont)
   if basechar then
    if marks[basechar] then
     while base do
      base=getprev(base)
      if base then
       basechar=ischar(base,currentfont)
       if basechar then
        if not marks[basechar] then
         break
        end
       else
        if trace_bugs then
         logwarning("%s: no base for mark %s, case %i",pref(dataset,sequence),gref(markchar),1)
        end
        return head,start,false
       end
      else
       if trace_bugs then
        logwarning("%s: no base for mark %s, case %i",pref(dataset,sequence),gref(markchar),2)
       end
       return head,start,false
      end
     end
    end
    local ba=markanchors[1][basechar]
    if ba then
     local ma=markanchors[2]
     local dx,dy,bound=setmark(start,base,factor,rlmode,ba,ma,characters[basechar],false,checkmarks)
     if trace_marks then
      logprocess("%s, bound %s, anchoring mark %s to basechar %s => (%p,%p)",
       pref(dataset,sequence),bound,gref(markchar),gref(basechar),dx,dy)
     end
     return head,start,true
    elseif trace_bugs then
     logwarning("%s: mark %s is not anchored to %s",pref(dataset,sequence),gref(markchar),gref(basechar))
    end
   elseif trace_bugs then
    logwarning("%s: nothing preceding, case %i",pref(dataset,sequence),1)
   end
  elseif trace_bugs then
   logwarning("%s: nothing preceding, case %i",pref(dataset,sequence),2)
  end
 elseif trace_bugs then
  logwarning("%s: mark %s is no mark",pref(dataset,sequence),gref(markchar))
 end
 return head,start,false
end
function handlers.gpos_mark2ligature(head,start,dataset,sequence,markanchors,rlmode,skiphash)
 local markchar=getchar(start)
 if marks[markchar] then
  local base=getprev(start) 
  if base then
   local basechar=ischar(base,currentfont)
   if basechar then
    if marks[basechar] then
     while base do
      base=getprev(base)
      if base then
       basechar=ischar(base,currentfont)
       if basechar then
        if not marks[basechar] then
         break
        end
       else
        if trace_bugs then
         logwarning("%s: no base for mark %s, case %i",pref(dataset,sequence),gref(markchar),1)
        end
        return head,start,false
       end
      else
       if trace_bugs then
        logwarning("%s: no base for mark %s, case %i",pref(dataset,sequence),gref(markchar),2)
       end
       return head,start,false
      end
     end
    end
    local ba=markanchors[1][basechar]
    if ba then
     local ma=markanchors[2]
     if ma then
      local index=getligaindex(start)
      ba=ba[index]
      if ba then
       local dx,dy,bound=setmark(start,base,factor,rlmode,ba,ma,characters[basechar],false,checkmarks)
       if trace_marks then
        logprocess("%s, index %s, bound %s, anchoring mark %s to baselig %s at index %s => (%p,%p)",
         pref(dataset,sequence),index,bound,gref(markchar),gref(basechar),index,dx,dy)
       end
       return head,start,true
      else
       if trace_bugs then
        logwarning("%s: no matching anchors for mark %s and baselig %s with index %a",pref(dataset,sequence),gref(markchar),gref(basechar),index)
       end
      end
     end
    elseif trace_bugs then
     onetimemessage(currentfont,basechar,"no base anchors",report_fonts)
    end
   elseif trace_bugs then
    logwarning("%s: prev node is no char, case %i",pref(dataset,sequence),1)
   end
  elseif trace_bugs then
   logwarning("%s: prev node is no char, case %i",pref(dataset,sequence),2)
  end
 elseif trace_bugs then
  logwarning("%s: mark %s is no mark",pref(dataset,sequence),gref(markchar))
 end
 return head,start,false
end
function handlers.gpos_mark2mark(head,start,dataset,sequence,markanchors,rlmode,skiphash)
 local markchar=getchar(start)
 if marks[markchar] then
  local base=getprev(start) 
  local slc=getligaindex(start)
  if slc then 
   while base do
    local blc=getligaindex(base)
    if blc and blc~=slc then
     base=getprev(base)
    else
     break
    end
   end
  end
  if base then
   local basechar=ischar(base,currentfont)
   if basechar then 
    local ba=markanchors[1][basechar] 
    if ba then
     local ma=markanchors[2]
     local dx,dy,bound=setmark(start,base,factor,rlmode,ba,ma,characters[basechar],true,checkmarks)
     if trace_marks then
      logprocess("%s, bound %s, anchoring mark %s to basemark %s => (%p,%p)",
       pref(dataset,sequence),bound,gref(markchar),gref(basechar),dx,dy)
     end
     return head,start,true
    end
   end
  end
 elseif trace_bugs then
  logwarning("%s: mark %s is no mark",pref(dataset,sequence),gref(markchar))
 end
 return head,start,false
end
function handlers.gpos_cursive(head,start,dataset,sequence,exitanchors,rlmode,skiphash,step) 
 local startchar=getchar(start)
 if marks[startchar] then
  if trace_cursive then
   logprocess("%s: ignoring cursive for mark %s",pref(dataset,sequence),gref(startchar))
  end
 else
  local nxt=getnext(start)
  while nxt do
   local nextchar=ischar(nxt,currentfont)
   if not nextchar then
    break
   elseif marks[nextchar] then 
    nxt=getnext(nxt)
   else
    local exit=exitanchors[3]
    if exit then
     local entry=exitanchors[1][nextchar]
     if entry then
      entry=entry[2]
      if entry then
       local r2lflag=sequence.flags[4] 
       local dx,dy,bound=setcursive(start,nxt,factor,rlmode,exit,entry,characters[startchar],characters[nextchar],r2lflag)
       if trace_cursive then
        logprocess("%s: moving %s to %s cursive (%p,%p) using bound %s in %s mode",pref(dataset,sequence),gref(startchar),gref(nextchar),dx,dy,bound,mref(rlmode))
       end
       return head,start,true
      end
     end
    end
    break
   end
  end
 end
 return head,start,false
end
local chainprocs={}
local function logprocess(...)
 if trace_steps then
  registermessage(...)
  if trace_steps=="silent" then
   return
  end
 end
 report_subchain(...)
end
local logwarning=report_subchain
local function logprocess(...)
 if trace_steps then
  registermessage(...)
  if trace_steps=="silent" then
   return
  end
 end
 report_chain(...)
end
local logwarning=report_chain
local function reversesub(head,start,stop,dataset,sequence,replacements,rlmode,skiphash)
 local char=getchar(start)
 local replacement=replacements[char]
 if replacement then
  if trace_singles then
   logprocess("%s: single reverse replacement of %s by %s",cref(dataset,sequence),gref(char),gref(replacement))
  end
  resetinjection(start)
  setchar(start,replacement)
  return head,start,true
 else
  return head,start,false
 end
end
chainprocs.reversesub=reversesub
local function reportzerosteps(dataset,sequence)
 logwarning("%s: no steps",cref(dataset,sequence))
end
local function reportmoresteps(dataset,sequence)
 logwarning("%s: more than 1 step",cref(dataset,sequence))
end
local function getmapping(dataset,sequence,currentlookup)
 local steps=currentlookup.steps
 local nofsteps=currentlookup.nofsteps
 if nofsteps==0 then
  reportzerosteps(dataset,sequence)
  currentlookup.mapping=false
  return false
 else
  if nofsteps>1 then
   reportmoresteps(dataset,sequence)
  end
  local mapping=steps[1].coverage
  currentlookup.mapping=mapping
  currentlookup.format=steps[1].format
  return mapping
 end
end
function chainprocs.gsub_remove(head,start,stop,dataset,sequence,currentlookup,rlmode,skiphash,chainindex)
 if trace_chains then
  logprocess("%s: removing character %s",cref(dataset,sequence,chainindex),gref(getchar(start)))
 end
 head,start=remove_node(head,start,true)
 return head,getprev(start),true
end
function chainprocs.gsub_single(head,start,stop,dataset,sequence,currentlookup,rlmode,skiphash,chainindex)
 local mapping=currentlookup.mapping
 if mapping==nil then
  mapping=getmapping(dataset,sequence,currentlookup)
 end
 if mapping then
  local current=start
  while current do
   local currentchar=ischar(current)
   if currentchar then
    local replacement=mapping[currentchar]
    if not replacement or replacement=="" then
     if trace_bugs then
      logwarning("%s: no single for %s",cref(dataset,sequence,chainindex),gref(currentchar))
     end
    else
     if trace_singles then
      logprocess("%s: replacing single %s by %s",cref(dataset,sequence,chainindex),gref(currentchar),gref(replacement))
     end
     resetinjection(current)
     setchar(current,replacement)
    end
    return head,start,true
   elseif currentchar==false then
    break
   elseif current==stop then
    break
   else
    current=getnext(current)
   end
  end
 end
 return head,start,false
end
function chainprocs.gsub_alternate(head,start,stop,dataset,sequence,currentlookup,rlmode,skiphash,chainindex)
 local mapping=currentlookup.mapping
 if mapping==nil then
  mapping=getmapping(dataset,sequence,currentlookup)
 end
 if mapping then
  local kind=dataset[4]
  local what=dataset[1]
  local value=what==true and tfmdata.shared.features[kind] or what 
  local current=start
  while current do
   local currentchar=ischar(current)
   if currentchar then
    local alternatives=mapping[currentchar]
    if alternatives then
     local choice,comment=get_alternative_glyph(current,alternatives,value)
     if choice then
      if trace_alternatives then
       logprocess("%s: replacing %s by alternative %a to %s, %s",cref(dataset,sequence),gref(currentchar),choice,gref(choice),comment)
      end
      resetinjection(start)
      setchar(start,choice)
     else
      if trace_alternatives then
       logwarning("%s: no variant %a for %s, %s",cref(dataset,sequence),value,gref(currentchar),comment)
      end
     end
    end
    return head,start,true
   elseif currentchar==false then
    break
   elseif current==stop then
    break
   else
    current=getnext(current)
   end
  end
 end
 return head,start,false
end
function chainprocs.gsub_multiple(head,start,stop,dataset,sequence,currentlookup,rlmode,skiphash,chainindex)
 local mapping=currentlookup.mapping
 if mapping==nil then
  mapping=getmapping(dataset,sequence,currentlookup)
 end
 if mapping then
  local startchar=getchar(start)
  local replacement=mapping[startchar]
  if not replacement or replacement=="" then
   if trace_bugs then
    logwarning("%s: no multiple for %s",cref(dataset,sequence),gref(startchar))
   end
  else
   if trace_multiples then
    logprocess("%s: replacing %s by multiple characters %s",cref(dataset,sequence),gref(startchar),gref(replacement))
   end
   return multiple_glyphs(head,start,replacement,skiphash,dataset[1],stop)
  end
 end
 return head,start,false
end
function chainprocs.gsub_ligature(head,start,stop,dataset,sequence,currentlookup,rlmode,skiphash,chainindex)
 local mapping=currentlookup.mapping
 if mapping==nil then
  mapping=getmapping(dataset,sequence,currentlookup)
 end
 if mapping then
  local startchar=getchar(start)
  local ligatures=mapping[startchar]
  if not ligatures then
   if trace_bugs then
    logwarning("%s: no ligatures starting with %s",cref(dataset,sequence,chainindex),gref(startchar))
   end
  else
   local hasmarks=marks[startchar]
   local current=getnext(start)
   local discfound=false
   local last=stop
   local nofreplacements=1
   while current do
    local id=getid(current)
    if id==disc_code then
     if not discfound then
      discfound=current
     end
     if current==stop then
      break 
     else
      current=getnext(current)
     end
    else
     local schar=getchar(current)
     if skiphash and skiphash[schar] then
       current=getnext(current)
     else
      local lg=ligatures[schar]
      if lg then
       ligatures=lg
       last=current
       nofreplacements=nofreplacements+1
       if marks[char] then
        hasmarks=true
       end
       if current==stop then
        break
       else
        current=getnext(current)
       end
      else
       break
      end
     end
    end
   end
   local ligature=ligatures.ligature
   if ligature then
    if chainindex then
     stop=last
    end
    if trace_ligatures then
     if start==stop then
      logprocess("%s: replacing character %s by ligature %s case 3",cref(dataset,sequence,chainindex),gref(startchar),gref(ligature))
     else
      logprocess("%s: replacing character %s upto %s by ligature %s case 4",cref(dataset,sequence,chainindex),gref(startchar),gref(getchar(stop)),gref(ligature))
     end
    end
    head,start=toligature(head,start,stop,ligature,dataset,sequence,skiphash,discfound,hasmarks)
    return head,start,true,nofreplacements,discfound
   elseif trace_bugs then
    if start==stop then
     logwarning("%s: replacing character %s by ligature fails",cref(dataset,sequence,chainindex),gref(startchar))
    else
     logwarning("%s: replacing character %s upto %s by ligature fails",cref(dataset,sequence,chainindex),gref(startchar),gref(getchar(stop)))
    end
   end
  end
 end
 return head,start,false,0,false
end
function chainprocs.gpos_single(head,start,stop,dataset,sequence,currentlookup,rlmode,skiphash,chainindex)
 local mapping=currentlookup.mapping
 if mapping==nil then
  mapping=getmapping(dataset,sequence,currentlookup)
 end
 if mapping then
  local startchar=getchar(start)
  local kerns=mapping[startchar]
  if kerns then
   local format=currentlookup.format
   if format=="single" then
    local dx,dy,w,h=setposition(0,start,factor,rlmode,kerns) 
    if trace_kerns then
     logprocess("%s: shifting single %s by %s (%p,%p) and correction (%p,%p)",cref(dataset,sequence),gref(startchar),format,dx,dy,w,h)
    end
   else 
    local k=(format=="move" and setmove or setkern)(start,factor,rlmode,kerns,injection)
    if trace_kerns then
     logprocess("%s: shifting single %s by %s %p",cref(dataset,sequence),gref(startchar),format,k)
    end
   end
   return head,start,true
  end
 end
 return head,start,false
end
function chainprocs.gpos_pair(head,start,stop,dataset,sequence,currentlookup,rlmode,skiphash,chainindex) 
 local mapping=currentlookup.mapping
 if mapping==nil then
  mapping=getmapping(dataset,sequence,currentlookup)
 end
 if mapping then
  local snext=getnext(start)
  if snext then
   local startchar=getchar(start)
   local kerns=mapping[startchar] 
   if kerns then
    local prev=start
    while snext do
     local nextchar=ischar(snext,currentfont)
     if not nextchar then
      break
     end
     if skiphash and skiphash[nextchar] then
      prev=snext
      snext=getnext(snext)
     else
      local krn=kerns[nextchar]
      if not krn then
       break
      end
      local format=currentlookup.format
      if format=="pair" then
       local a=krn[1]
       local b=krn[2]
       if a==true then
       elseif a then
        local x,y,w,h=setposition(1,start,factor,rlmode,a,"injections") 
        if trace_kerns then
         local startchar=getchar(start)
         logprocess("%s: shifting first of pair %s and %s by (%p,%p) and correction (%p,%p)",cref(dataset,sequence),gref(startchar),gref(nextchar),x,y,w,h)
        end
       end
       if b==true then
        start=snext 
       elseif b then 
        local x,y,w,h=setposition(2,snext,factor,rlmode,b,"injections")
        if trace_kerns then
         local startchar=getchar(start)
         logprocess("%s: shifting second of pair %s and %s by (%p,%p) and correction (%p,%p)",cref(dataset,sequence),gref(startchar),gref(nextchar),x,y,w,h)
        end
        start=snext 
       elseif forcepairadvance then
        start=snext 
       end
       return head,start,true
      elseif krn~=0 then
       local k=(format=="move" and setmove or setkern)(snext,factor,rlmode,krn)
       if trace_kerns then
        logprocess("%s: inserting %s %p between %s and %s",cref(dataset,sequence),format,k,gref(getchar(prev)),gref(nextchar))
       end
       return head,start,true
      else
       break
      end
     end
    end
   end
  end
 end
 return head,start,false
end
function chainprocs.gpos_mark2base(head,start,stop,dataset,sequence,currentlookup,rlmode,skiphash,chainindex)
 local mapping=currentlookup.mapping
 if mapping==nil then
  mapping=getmapping(dataset,sequence,currentlookup)
 end
 if mapping then
  local markchar=getchar(start)
  if marks[markchar] then
   local markanchors=mapping[markchar] 
   if markanchors then
    local base=getprev(start) 
    if base then
     local basechar=ischar(base,currentfont)
     if basechar then
      if marks[basechar] then
       while base do
        base=getprev(base)
        if base then
         local basechar=ischar(base,currentfont)
         if basechar then
          if not marks[basechar] then
           break
          end
         else
          if trace_bugs then
           logwarning("%s: no base for mark %s, case %i",pref(dataset,sequence),gref(markchar),1)
          end
          return head,start,false
         end
        else
         if trace_bugs then
          logwarning("%s: no base for mark %s, case %i",pref(dataset,sequence),gref(markchar),2)
         end
         return head,start,false
        end
       end
      end
      local ba=markanchors[1][basechar]
      if ba then
       local ma=markanchors[2]
       if ma then
        local dx,dy,bound=setmark(start,base,factor,rlmode,ba,ma,characters[basechar],false,checkmarks)
        if trace_marks then
         logprocess("%s, bound %s, anchoring mark %s to basechar %s => (%p,%p)",
          cref(dataset,sequence),bound,gref(markchar),gref(basechar),dx,dy)
        end
        return head,start,true
       end
      end
     elseif trace_bugs then
      logwarning("%s: prev node is no char, case %i",cref(dataset,sequence),1)
     end
    elseif trace_bugs then
     logwarning("%s: prev node is no char, case %i",cref(dataset,sequence),2)
    end
   elseif trace_bugs then
    logwarning("%s: mark %s has no anchors",cref(dataset,sequence),gref(markchar))
   end
  elseif trace_bugs then
   logwarning("%s: mark %s is no mark",cref(dataset,sequence),gref(markchar))
  end
 end
 return head,start,false
end
function chainprocs.gpos_mark2ligature(head,start,stop,dataset,sequence,currentlookup,rlmode,skiphash,chainindex)
 local mapping=currentlookup.mapping
 if mapping==nil then
  mapping=getmapping(dataset,sequence,currentlookup)
 end
 if mapping then
  local markchar=getchar(start)
  if marks[markchar] then
   local markanchors=mapping[markchar] 
   if markanchors then
    local base=getprev(start) 
    if base then
     local basechar=ischar(base,currentfont)
     if basechar then
      if marks[basechar] then
       while base do
        base=getprev(base)
        if base then
         local basechar=ischar(base,currentfont)
         if basechar then
          if not marks[basechar] then
           break
          end
         else
          if trace_bugs then
           logwarning("%s: no base for mark %s, case %i",cref(dataset,sequence),markchar,1)
          end
          return head,start,false
         end
        else
         if trace_bugs then
          logwarning("%s: no base for mark %s, case %i",cref(dataset,sequence),markchar,2)
         end
         return head,start,false
        end
       end
      end
      local ba=markanchors[1][basechar]
      if ba then
       local ma=markanchors[2]
       if ma then
        local index=getligaindex(start)
        ba=ba[index]
        if ba then
         local dx,dy,bound=setmark(start,base,factor,rlmode,ba,ma,characters[basechar],false,checkmarks)
         if trace_marks then
          logprocess("%s, bound %s, anchoring mark %s to baselig %s at index %s => (%p,%p)",
           cref(dataset,sequence),a or bound,gref(markchar),gref(basechar),index,dx,dy)
         end
         return head,start,true
        end
       end
      end
     elseif trace_bugs then
      logwarning("%s, prev node is no char, case %i",cref(dataset,sequence),1)
     end
    elseif trace_bugs then
     logwarning("%s, prev node is no char, case %i",cref(dataset,sequence),2)
    end
   elseif trace_bugs then
    logwarning("%s, mark %s has no anchors",cref(dataset,sequence),gref(markchar))
   end
  elseif trace_bugs then
   logwarning("%s, mark %s is no mark",cref(dataset,sequence),gref(markchar))
  end
 end
 return head,start,false
end
function chainprocs.gpos_mark2mark(head,start,stop,dataset,sequence,currentlookup,rlmode,skiphash,chainindex)
 local mapping=currentlookup.mapping
 if mapping==nil then
  mapping=getmapping(dataset,sequence,currentlookup)
 end
 if mapping then
  local markchar=getchar(start)
  if marks[markchar] then
   local markanchors=mapping[markchar] 
   if markanchors then
    local base=getprev(start) 
    local slc=getligaindex(start)
    if slc then 
     while base do
      local blc=getligaindex(base)
      if blc and blc~=slc then
       base=getprev(base)
      else
       break
      end
     end
    end
    if base then 
     local basechar=ischar(base,currentfont)
     if basechar then
      local ba=markanchors[1][basechar]
      if ba then
       local ma=markanchors[2]
       if ma then
        local dx,dy,bound=setmark(start,base,factor,rlmode,ba,ma,characters[basechar],true,checkmarks)
        if trace_marks then
         logprocess("%s, bound %s, anchoring mark %s to basemark %s => (%p,%p)",
          cref(dataset,sequence),bound,gref(markchar),gref(basechar),dx,dy)
        end
        return head,start,true
       end
      end
     elseif trace_bugs then
      logwarning("%s: prev node is no mark, case %i",cref(dataset,sequence),1)
     end
    elseif trace_bugs then
     logwarning("%s: prev node is no mark, case %i",cref(dataset,sequence),2)
    end
   elseif trace_bugs then
    logwarning("%s: mark %s has no anchors",cref(dataset,sequence),gref(markchar))
   end
  elseif trace_bugs then
   logwarning("%s: mark %s is no mark",cref(dataset,sequence),gref(markchar))
  end
 end
 return head,start,false
end
function chainprocs.gpos_cursive(head,start,stop,dataset,sequence,currentlookup,rlmode,skiphash,chainindex)
 local mapping=currentlookup.mapping
 if mapping==nil then
  mapping=getmapping(dataset,sequence,currentlookup)
 end
 if mapping then
  local startchar=getchar(start)
  local exitanchors=mapping[startchar] 
  if exitanchors then
   if marks[startchar] then
    if trace_cursive then
     logprocess("%s: ignoring cursive for mark %s",pref(dataset,sequence),gref(startchar))
    end
   else
    local nxt=getnext(start)
    while nxt do
     local nextchar=ischar(nxt,currentfont)
     if not nextchar then
      break
     elseif marks[nextchar] then
      nxt=getnext(nxt)
     else
      local exit=exitanchors[3]
      if exit then
       local entry=exitanchors[1][nextchar]
       if entry then
        entry=entry[2]
        if entry then
         local r2lflag=sequence.flags[4] 
         local dx,dy,bound=setcursive(start,nxt,factor,rlmode,exit,entry,characters[startchar],characters[nextchar],r2lflag)
         if trace_cursive then
          logprocess("%s: moving %s to %s cursive (%p,%p) using bound %s in %s mode",pref(dataset,sequence),gref(startchar),gref(nextchar),dx,dy,bound,mref(rlmode))
         end
         return head,start,true
        end
       end
      elseif trace_bugs then
       onetimemessage(currentfont,startchar,"no entry anchors",report_fonts)
      end
      break
     end
    end
   end
  elseif trace_cursive and trace_details then
   logprocess("%s, cursive %s is already done",pref(dataset,sequence),gref(getchar(start)),alreadydone)
  end
 end
 return head,start,false
end
local function show_skip(dataset,sequence,char,ck,class)
 logwarning("%s: skipping char %s, class %a, rule %a, lookuptype %a",cref(dataset,sequence),gref(char),class,ck[1],ck[8] or ck[2])
end
local userkern=nuts.pool and nuts.pool.newkern 
do if not userkern then 
 local thekern=nuts.new("kern",1) 
 local setkern=nuts.setkern    
 userkern=function(k)
  local n=copy_node(thekern)
  setkern(n,k)
  return n
 end
end end
local function checked(head)
 local current=head
 while current do
  if getid(current)==glue_code then
   local kern=userkern(getwidth(current))
   if head==current then
    local next=getnext(current)
    if next then
     setlink(kern,next)
    end
    flush_node(current)
    head=kern
    current=next
   else
    local prev,next=getboth(current)
    setlink(prev,kern,next)
    flush_node(current)
    current=next
   end
  else
   current=getnext(current)
  end
 end
 return head
end
local function setdiscchecked(d,pre,post,replace)
 if pre  then pre=checked(pre)  end
 if post then post=checked(post) end
 if replace then replace=checked(replace) end
 setdisc(d,pre,post,replace)
end
local noflags={ false,false,false,false }
local function chainrun(head,start,last,dataset,sequence,rlmode,skiphash,ck)
 local size=ck[5]-ck[4]+1
 local chainlookups=ck[6]
 local done=false
 if chainlookups then
  if size==1 then
   local chainlookup=chainlookups[1]
   for j=1,#chainlookup do
    local chainstep=chainlookup[j]
    local chainkind=chainstep.type
    local chainproc=chainprocs[chainkind]
    if chainproc then
     local ok
     head,start,ok=chainproc(head,start,last,dataset,sequence,chainstep,rlmode,skiphash)
     if ok then
      done=true
     end
    else
     logprocess("%s: %s is not yet supported (1)",cref(dataset,sequence),chainkind)
    end
   end
   else
   local i=1
   local laststart=start
   local nofchainlookups=#chainlookups 
   while start do
    if skiphash then 
     while start do
      local char=ischar(start,currentfont)
      if char then
       if skiphash and skiphash[char] then
        start=getnext(start)
       else
        break
       end
      else
       break
      end
     end
    end
    local chainlookup=chainlookups[i]
    if chainlookup then
     for j=1,#chainlookup do
      local chainstep=chainlookup[j]
      local chainkind=chainstep.type
      local chainproc=chainprocs[chainkind]
      if chainproc then
       local ok,n
       head,start,ok,n=chainproc(head,start,last,dataset,sequence,chainstep,rlmode,skiphash,i)
       if ok then
        done=true
        if n and n>1 and i+n>nofchainlookups then
         i=size 
         break
        end
       end
      else
       logprocess("%s: %s is not yet supported (2)",cref(dataset,sequence),chainkind)
      end
     end
    else
    end
    i=i+1
    if i>size or not start then
     break
    elseif start then
     laststart=start
     start=getnext(start)
    end
   end
   if not start then
    start=laststart
   end
  end
 else
  local replacements=ck[7]
  if replacements then
   head,start,done=reversesub(head,start,last,dataset,sequence,replacements,rlmode,skiphash)
  else
   done=true
   if trace_contexts then
    logprocess("%s: skipping match",cref(dataset,sequence))
   end
  end
 end
 return head,start,done
end
local function chaindisk(head,start,dataset,sequence,rlmode,skiphash,ck)
 if not start then
  return head,start,false
 end
 local startishead=start==head
 local seq=ck[3]
 local f=ck[4]
 local l=ck[5]
 local s=#seq
 local done=false
 local sweepnode=sweepnode
 local sweeptype=sweeptype
 local sweepoverflow=false
 local keepdisc=not sweepnode
 local lookaheaddisc=nil
 local backtrackdisc=nil
 local current=start
 local last=start
 local prev=getprev(start)
 local hasglue=false
 local i=f
 while i<=l do
  local id=getid(current)
  if id==glyph_code then
   i=i+1
   last=current
   current=getnext(current)
  elseif id==glue_code then
   i=i+1
   last=current
   current=getnext(current)
   hasglue=true
  elseif id==disc_code then
   if keepdisc then
    keepdisc=false
    lookaheaddisc=current
    local replace=getreplace(current)
    if not replace then
     sweepoverflow=true
     sweepnode=current
     current=getnext(current)
    else
     while replace and i<=l do
      if getid(replace)==glyph_code then
       i=i+1
      end
      replace=getnext(replace)
     end
     current=getnext(replace)
    end
    last=current
   else
    head,current=flattendisk(head,current)
   end
  else
   last=current
   current=getnext(current)
  end
  if current then
  elseif sweepoverflow then
   break
  elseif sweeptype=="post" or sweeptype=="replace" then
   current=getnext(sweepnode)
   if current then
    sweeptype=nil
    sweepoverflow=true
   else
    break
   end
  else
   break 
  end
 end
 if sweepoverflow then
  local prev=current and getprev(current)
  if not current or prev~=sweepnode then
   local head=getnext(sweepnode)
   local tail=nil
   if prev then
    tail=prev
    setprev(current,sweepnode)
   else
    tail=find_node_tail(head)
   end
   setnext(sweepnode,current)
   setprev(head)
   setnext(tail)
   appenddisc(sweepnode,head)
  end
 end
 if l<s then
  local i=l
  local t=sweeptype=="post" or sweeptype=="replace"
  while current and i<s do
   local id=getid(current)
   if id==glyph_code then
    i=i+1
    current=getnext(current)
   elseif id==glue_code then
    i=i+1
    current=getnext(current)
    hasglue=true
   elseif id==disc_code then
    if keepdisc then
     keepdisc=false
     if notmatchpre[current]~=notmatchreplace[current] then
      lookaheaddisc=current
     end
     local replace=getreplace(current)
     while replace and i<s do
      if getid(replace)==glyph_code then
       i=i+1
      end
      replace=getnext(replace)
     end
     current=getnext(current)
    elseif notmatchpre[current]~=notmatchreplace[current] then
     head,current=flattendisk(head,current)
    else
     current=getnext(current) 
    end
   else
    current=getnext(current)
   end
   if not current and t then
    current=getnext(sweepnode)
    if current then
     sweeptype=nil
    end
   end
  end
 end
 if f>1 then
  local current=prev
  local i=f
  local t=sweeptype=="pre" or sweeptype=="replace"
  if not current and t and current==checkdisk then
   current=getprev(sweepnode)
  end
  while current and i>1 do 
   local id=getid(current)
   if id==glyph_code then
    i=i-1
   elseif id==glue_code then
    i=i-1
    hasglue=true
   elseif id==disc_code then
    if keepdisc then
     keepdisc=false
     if notmatchpost[current]~=notmatchreplace[current] then
      backtrackdisc=current
     end
     local replace=getreplace(current)
     while replace and i>1 do
      if getid(replace)==glyph_code then
       i=i-1
      end
      replace=getnext(replace)
     end
    elseif notmatchpost[current]~=notmatchreplace[current] then
     head,current=flattendisk(head,current)
    end
   end
   current=getprev(current)
   if t and current==checkdisk then
    current=getprev(sweepnode)
   end
  end
 end
 local done=false
 if lookaheaddisc then
  local cf=start
  local cl=getprev(lookaheaddisc)
  local cprev=getprev(start)
  local insertedmarks=0
  while cprev do
   local char=ischar(cf,currentfont)
   if char and marks[char] then
    insertedmarks=insertedmarks+1
    cf=cprev
    startishead=cf==head
    cprev=getprev(cprev)
   else
    break
   end
  end
  setlink(cprev,lookaheaddisc)
  setprev(cf)
  setnext(cl)
  if startishead then
   head=lookaheaddisc
  end
  local pre,post,replace=getdisc(lookaheaddisc)
  local new=copy_node_list(cf) 
  local cnew=new
  if pre then
   setlink(find_node_tail(cf),pre)
  end
  if replace then
   local tail=find_node_tail(new)
   setlink(tail,replace)
  end
  for i=1,insertedmarks do
   cnew=getnext(cnew)
  end
  cl=start
  local clast=cnew
  for i=f,l do
   cl=getnext(cl)
   clast=getnext(clast)
  end
  if not notmatchpre[lookaheaddisc] then
   local ok=false
   cf,start,ok=chainrun(cf,start,cl,dataset,sequence,rlmode,skiphash,ck)
   if ok then
    done=true
   end
  end
  if not notmatchreplace[lookaheaddisc] then
   local ok=false
   new,cnew,ok=chainrun(new,cnew,clast,dataset,sequence,rlmode,skiphash,ck)
   if ok then
    done=true
   end
  end
  if hasglue then
   setdiscchecked(lookaheaddisc,cf,post,new)
  else
   setdisc(lookaheaddisc,cf,post,new)
  end
  start=getprev(lookaheaddisc)
  sweephead[cf]=getnext(clast) or false
  sweephead[new]=getnext(cl) or false
 elseif backtrackdisc then
  local cf=getnext(backtrackdisc)
  local cl=start
  local cnext=getnext(start)
  local insertedmarks=0
  while cnext do
   local char=ischar(cnext,currentfont)
   if char and marks[char] then
    insertedmarks=insertedmarks+1
    cl=cnext
    cnext=getnext(cnext)
   else
    break
   end
  end
  setlink(backtrackdisc,cnext)
  setprev(cf)
  setnext(cl)
  local pre,post,replace,pretail,posttail,replacetail=getdisc(backtrackdisc,true)
  local new=copy_node_list(cf)
  local cnew=find_node_tail(new)
  for i=1,insertedmarks do
   cnew=getprev(cnew)
  end
  local clast=cnew
  for i=f,l do
   clast=getnext(clast)
  end
  if not notmatchpost[backtrackdisc] then
   local ok=false
   cf,start,ok=chainrun(cf,start,last,dataset,sequence,rlmode,skiphash,ck)
   if ok then
    done=true
   end
  end
  if not notmatchreplace[backtrackdisc] then
   local ok=false
   new,cnew,ok=chainrun(new,cnew,clast,dataset,sequence,rlmode,skiphash,ck)
   if ok then
    done=true
   end
  end
  if post then
   setlink(posttail,cf)
  else
   post=cf
  end
  if replace then
   setlink(replacetail,new)
  else
   replace=new
  end
  if hasglue then
   setdiscchecked(backtrackdisc,pre,post,replace)
  else
   setdisc(backtrackdisc,pre,post,replace)
  end
  start=getprev(backtrackdisc)
  sweephead[post]=getnext(clast) or false
  sweephead[replace]=getnext(last) or false
 else
  local ok=false
  head,start,ok=chainrun(head,start,last,dataset,sequence,rlmode,skiphash,ck)
  if ok then
   done=true
  end
 end
 return head,start,done
end
local function chaintrac(head,start,dataset,sequence,rlmode,skiphash,ck,match,discseen,sweepnode)
 local rule=ck[1]
 local lookuptype=ck[8] or ck[2]
 local nofseq=#ck[3]
 local first=ck[4]
 local last=ck[5]
 local char=getchar(start)
 logwarning("%s: rule %s %s at char %s for (%s,%s,%s) chars, lookuptype %a, %sdisc seen, %ssweeping",
  cref(dataset,sequence),rule,match and "matches" or "nomatch",
  gref(char),first-1,last-first+1,nofseq-last,lookuptype,
  discseen and "" or "no ",sweepnode and "" or "not ")
end
local function handle_contextchain(head,start,dataset,sequence,contexts,rlmode,skiphash)
 local sweepnode=sweepnode
 local sweeptype=sweeptype
 local postreplace
 local prereplace
 local checkdisc
 local discseen  
 if sweeptype then
  if sweeptype=="replace" then
   postreplace=true
   prereplace=true
  else
   postreplace=sweeptype=="post"
   prereplace=sweeptype=="pre"
  end
  checkdisc=getprev(head)
 end
 local currentfont=currentfont
 local skipped   
 local startprev,
    startnext=getboth(start)
 local done
 local nofcontexts=contexts.n 
 local startchar=nofcontext==1 or ischar(start,currentfont) 
 for k=1,nofcontexts do 
  local ck=contexts[k]
  local seq=ck[3]
  local f=ck[4] 
  if not startchar or not seq[f][startchar] then
   goto next
  end
  local s=seq.n 
  local l=ck[5] 
  local current=start
  local last=start
  if l>f then
   local discfound 
   local n=f+1
   last=startnext 
   while n<=l do
    if postreplace and not last then
     last=getnext(sweepnode)
     sweeptype=nil
    end
    if last then
     local char,id=ischar(last,currentfont)
     if char then
      if skiphash and skiphash[char] then
       skipped=true
       if trace_skips then
        show_skip(dataset,sequence,char,ck,classes[char])
       end
       last=getnext(last)
      elseif seq[n][char] then
       if n<l then
        last=getnext(last)
       end
       n=n+1
      elseif discfound then
       notmatchreplace[discfound]=true
       if notmatchpre[discfound] then
        goto next
       else
        break
       end
      else
       goto next
      end
     elseif char==false then
      if discfound then
       notmatchreplace[discfound]=true
       if notmatchpre[discfound] then
        goto next
       else
        break
       end
      else
       goto next
      end
     elseif id==disc_code then
      discseen=true
      discfound=last
      notmatchpre[last]=nil
      notmatchpost[last]=true
      notmatchreplace[last]=nil
      local pre,post,replace=getdisc(last)
      if pre then
       local n=n
       while pre do
        if seq[n][getchar(pre)] then
         n=n+1
         if n>l then
          break
         end
         pre=getnext(pre)
        else
         notmatchpre[last]=true
         break
        end
       end
      else
       notmatchpre[last]=true
      end
      if replace then
       while replace do
        if seq[n][getchar(replace)] then
         n=n+1
         if n>l then
          break
         end
         replace=getnext(replace)
        else
         notmatchreplace[last]=true
         if notmatchpre[last] then
          goto next
         else
          break
         end
        end
       end
       if notmatchpre[last] then
        goto next
       end
      end
      last=getnext(last)
     else
      goto next
     end
    else
     goto next
    end
   end
  end
  if f>1 then
   if startprev then
    local prev=startprev
    if prereplace and prev==checkdisc then
     prev=getprev(sweepnode)
    end
    if prev then
     local discfound 
     local n=f-1
     while n>=1 do
      if prev then
       local char,id=ischar(prev,currentfont)
       if char then
        if skiphash and skiphash[char] then
         skipped=true
         if trace_skips then
          show_skip(dataset,sequence,char,ck,classes[char])
         end
         prev=getprev(prev)
        elseif seq[n][char] then
         if n>1 then
          prev=getprev(prev)
         end
         n=n-1
        elseif discfound then
         notmatchreplace[discfound]=true
         if notmatchpost[discfound] then
          goto next
         else
          break
         end
        else
         goto next
        end
       elseif char==false then
        if discfound then
         notmatchreplace[discfound]=true
         if notmatchpost[discfound] then
          goto next
         end
        else
         goto next
        end
        break
       elseif id==disc_code then
        discseen=true
        discfound=prev
        notmatchpre[prev]=true
        notmatchpost[prev]=nil
        notmatchreplace[prev]=nil
        local pre,post,replace,pretail,posttail,replacetail=getdisc(prev,true)
        if pre~=start and post~=start and replace~=start then
         if post then
          local n=n
          while posttail do
           if seq[n][getchar(posttail)] then
            n=n-1
            if posttail==post or n<1 then
             break
            else
             posttail=getprev(posttail)
            end
           else
            notmatchpost[prev]=true
            break
           end
          end
          if n>=1 then
           notmatchpost[prev]=true
          end
         else
          notmatchpost[prev]=true
         end
         if replace then
          while replacetail do
           if seq[n][getchar(replacetail)] then
            n=n-1
            if replacetail==replace or n<1 then
             break
            else
             replacetail=getprev(replacetail)
            end
           else
            notmatchreplace[prev]=true
            if notmatchpost[prev] then
             goto next
            else
             break
            end
           end
          end
         else
         end
        end
        prev=getprev(prev)
       elseif id==glue_code then
        local sn=seq[n]
        if (sn[32] and spaces[prev]) or sn[0xFFFC] then
         n=n-1
         prev=getprev(prev)
        else
         goto next
        end
       elseif seq[n][0xFFFC] then
        n=n-1
        prev=getprev(prev)
       else
        goto next
       end
      else
       goto next
      end
     end
    else
     goto next
    end
   else
    goto next
   end
  end
  if s>l then
   local current=last and getnext(last)
   if not current and postreplace then
    current=getnext(sweepnode)
   end
   if current then
    local discfound 
    local n=l+1
    while n<=s do
     if current then
      local char,id=ischar(current,currentfont)
      if char then
       if skiphash and skiphash[char] then
        skipped=true
        if trace_skips then
         show_skip(dataset,sequence,char,ck,classes[char])
        end
        current=getnext(current) 
       elseif seq[n][char] then
        if n<s then 
         current=getnext(current) 
        end
        n=n+1
       elseif discfound then
        notmatchreplace[discfound]=true
        if notmatchpre[discfound] then
         goto next
        else
         break
        end
       else
        goto next
       end
      elseif char==false then
       if discfound then
        notmatchreplace[discfound]=true
        if notmatchpre[discfound] then
         goto next
        else
         break
        end
       else
        goto next
       end
      elseif id==disc_code then
       discseen=true
       discfound=current
       notmatchpre[current]=nil
       notmatchpost[current]=true
       notmatchreplace[current]=nil
       local pre,post,replace=getdisc(current)
       if pre then
        local n=n
        while pre do
         if seq[n][getchar(pre)] then
          n=n+1
          if n>s then
           break
          else
           pre=getnext(pre)
          end
         else
          notmatchpre[current]=true
          break
         end
        end
        if n<=s then
         notmatchpre[current]=true
        end
       else
        notmatchpre[current]=true
       end
       if replace then
        while replace do
         if seq[n][getchar(replace)] then
          n=n+1
          if n>s then
           break
          else
           replace=getnext(replace)
          end
         else
          notmatchreplace[current]=true
          if notmatchpre[current] then
           goto next
          else
           break
          end
         end
        end
       else
       end
       current=getnext(current)
      elseif id==glue_code then
       local sn=seq[n]
       if (sn[32] and spaces[current]) or sn[0xFFFC] then
        n=n+1
        current=getnext(current)
       else
        goto next
       end
      elseif seq[n][0xFFFC] then
       n=n+1
       current=getnext(current)
      else
       goto next
      end
     else
      goto next
     end
    end
   else
    goto next
   end
  end
  if trace_contexts then
   chaintrac(head,start,dataset,sequence,rlmode,skipped and skiphash,ck,true,discseen,sweepnode)
  end
  if discseen or sweepnode then
   head,start,done=chaindisk(head,start,dataset,sequence,rlmode,skipped and skiphash,ck)
  else
   head,start,done=chainrun(head,start,last,dataset,sequence,rlmode,skipped and skiphash,ck)
  end
  if done then
   break
  end
  ::next::
 end
 if discseen then
  notmatchpre={}
  notmatchpost={}
  notmatchreplace={}
 end
 return head,start,done
end
handlers.gsub_context=handle_contextchain
handlers.gsub_contextchain=handle_contextchain
handlers.gsub_reversecontextchain=handle_contextchain
handlers.gpos_contextchain=handle_contextchain
handlers.gpos_context=handle_contextchain
local function chained_contextchain(head,start,stop,dataset,sequence,currentlookup,rlmode,skiphash)
 local steps=currentlookup.steps
 local nofsteps=currentlookup.nofsteps
 if nofsteps>1 then
  reportmoresteps(dataset,sequence)
 end
 local l=steps[1].coverage[getchar(start)]
 if l then
  return handle_contextchain(head,start,dataset,sequence,l,rlmode,skiphash)
 else
  return head,start,false
 end
end
chainprocs.gsub_context=chained_contextchain
chainprocs.gsub_contextchain=chained_contextchain
chainprocs.gsub_reversecontextchain=chained_contextchain
chainprocs.gpos_contextchain=chained_contextchain
chainprocs.gpos_context=chained_contextchain
local missing=setmetatableindex("table")
local logwarning=report_process
local resolved={} 
local function logprocess(...)
 if trace_steps then
  registermessage(...)
  if trace_steps=="silent" then
   return
  end
 end
 report_process(...)
end
local sequencelists=setmetatableindex(function(t,font)
 local sequences=fontdata[font].resources.sequences
 if not sequences or not next(sequences) then
  sequences=false
 end
 t[font]=sequences
 return sequences
end)
do 
 local autofeatures=fonts.analyzers.features
 local featuretypes=otf.tables.featuretypes
 local defaultscript=otf.features.checkeddefaultscript
 local defaultlanguage=otf.features.checkeddefaultlanguage
 local wildcard="*"
 local default="dflt"
 local function initialize(sequence,script,language,enabled,autoscript,autolanguage)
  local features=sequence.features
  if features then
   local order=sequence.order
   if order then
    local featuretype=featuretypes[sequence.type or "unknown"]
    for i=1,#order do
     local kind=order[i]
     local valid=enabled[kind]
     if valid then
      local scripts=features[kind]
      local languages=scripts and (
       scripts[script] or
       scripts[wildcard] or
       (autoscript and defaultscript(featuretype,autoscript,scripts))
      )
      local enabled=languages and (
       languages[language] or
       languages[wildcard] or
       (autolanguage and defaultlanguage(featuretype,autolanguage,languages))
      )
      if enabled then
       return { valid,autofeatures[kind] or false,sequence,kind }
      end
     end
    end
   else
   end
  end
  return false
 end
 function otf.dataset(tfmdata,font) 
  local shared=tfmdata.shared
  local properties=tfmdata.properties
  local language=properties.language or "dflt"
  local script=properties.script   or "dflt"
  local enabled=shared.features
  local autoscript=enabled and enabled.autoscript
  local autolanguage=enabled and enabled.autolanguage
  local res=resolved[font]
  if not res then
   res={}
   resolved[font]=res
  end
  local rs=res[script]
  if not rs then
   rs={}
   res[script]=rs
  end
  local rl=rs[language]
  if not rl then
   rl={
   }
   rs[language]=rl
   local sequences=tfmdata.resources.sequences
   if sequences then
    for s=1,#sequences do
     local v=enabled and initialize(sequences[s],script,language,enabled,autoscript,autolanguage)
     if v then
      rl[#rl+1]=v
     end
    end
   end
  end
  return rl
 end
end
local function report_disc(what,n)
 report_run("%s: %s > %s",what,n,languages.serializediscretionary(n))
end
local function kernrun(disc,k_run,font,attr,...)
 if trace_kernruns then
  report_disc("kern",disc)
 end
 local prev,next=getboth(disc)
 local nextstart=next
 local done=false
 local pre,post,replace,pretail,posttail,replacetail=getdisc(disc,true)
 local prevmarks=prev
 while prevmarks do
  local char=ischar(prevmarks,font)
  if char and marks[char] then
   prevmarks=getprev(prevmarks)
  else
   break
  end
 end
 if prev and not ischar(prev,font) then  
  prev=false
 end
 if next and not ischar(next,font) then  
  next=false
 end
 if pre then
  if k_run(pre,"injections",nil,font,attr,...) then
   done=true
  end
  if prev then
   setlink(prev,pre)
   if k_run(prevmarks,"preinjections",pre,font,attr,...) then 
    done=true
   end
   setprev(pre)
   setlink(prev,disc)
  end
 end
 if post then
  if k_run(post,"injections",nil,font,attr,...) then
   done=true
  end
  if next then
   setlink(posttail,next)
   if k_run(posttail,"postinjections",next,font,attr,...) then
    done=true
   end
   setnext(posttail)
   setlink(disc,next)
  end
 end
 if replace then
  if k_run(replace,"injections",nil,font,attr,...) then
   done=true
  end
  if prev then
   setlink(prev,replace)
   if k_run(prevmarks,"replaceinjections",replace,font,attr,...) then 
    done=true
   end
   setprev(replace)
   setlink(prev,disc)
  end
  if next then
   setlink(replacetail,next)
   if k_run(replacetail,"replaceinjections",next,font,attr,...) then
    done=true
   end
   setnext(replacetail)
   setlink(disc,next)
  end
 elseif prev and next then
  setlink(prev,next)
  if k_run(prevmarks,"emptyinjections",next,font,attr,...) then
   done=true
  end
  setlink(prev,disc,next)
 end
 if done and trace_testruns then
  report_disc("done",disc)
 end
 return nextstart,done
end
local function comprun(disc,c_run,...) 
 if trace_compruns then
  report_disc("comp",disc)
 end
 local pre,post,replace=getdisc(disc)
 local renewed=false
 if pre then
  sweepnode=disc
  sweeptype="pre" 
  local new,done=c_run(pre,...)
  if done then
   pre=new
   renewed=true
  end
 end
 if post then
  sweepnode=disc
  sweeptype="post"
  local new,done=c_run(post,...)
  if done then
   post=new
   renewed=true
  end
 end
 if replace then
  sweepnode=disc
  sweeptype="replace"
  local new,done=c_run(replace,...)
  if done then
   replace=new
   renewed=true
  end
 end
 sweepnode=nil
 sweeptype=nil
 if renewed then
  if trace_testruns then
   report_disc("done",disc)
  end
  setdisc(disc,pre,post,replace)
 end
 return getnext(disc),renewed
end
local function testrun(disc,t_run,c_run,...)
 if trace_testruns then
  report_disc("test",disc)
 end
 local prev,next=getboth(disc)
 if not next then
  return
 end
 local pre,post,replace,pretail,posttail,replacetail=getdisc(disc,true)
 local renewed=false
 if post or replace then 
  if post then
   setlink(posttail,next)
  else
   post=next
  end
  if replace then
   setlink(replacetail,next)
  else
   replace=next
  end
  local d_post=t_run(post,next,...)
  local d_replace=t_run(replace,next,...)
  if d_post>0 or d_replace>0 then
   local d=d_replace>d_post and d_replace or d_post
   local head=getnext(disc) 
   local tail=head
   for i=2,d do 
    local nx=getnext(tail)
    local id=getid(nx)
    if id==disc_code then
     head,tail=flattendisk(head,nx)
    elseif id==glyph_code then
     tail=nx
    else
     break
    end
   end
   next=getnext(tail)
   setnext(tail)
   setprev(head)
   local new=copy_node_list(head)
   if posttail then
    setlink(posttail,head)
   else
    post=head
   end
   if replacetail then
    setlink(replacetail,new)
   else
    replace=new
   end
  else
   if posttail then
    setnext(posttail)
   else
    post=nil
   end
   if replacetail then
    setnext(replacetail)
   else
    replace=nil
   end
  end
  setlink(disc,next)
 end
 if trace_testruns then
  report_disc("more",disc)
 end
 if pre then
  sweepnode=disc
  sweeptype="pre"
  local new,ok=c_run(pre,...)
  if ok then
   pre=new
   renewed=true
  end
 end
 if post then
  sweepnode=disc
  sweeptype="post"
  local new,ok=c_run(post,...)
  if ok then
   post=new
   renewed=true
  end
 end
 if replace then
  sweepnode=disc
  sweeptype="replace"
  local new,ok=c_run(replace,...)
  if ok then
   replace=new
   renewed=true
  end
 end
 sweepnode=nil
 sweeptype=nil
 if renewed then
  setdisc(disc,pre,post,replace)
  if trace_testruns then
   report_disc("done",disc)
  end
 end
 return getnext(disc),renewed
end
local nesting=0
local function c_run_single(head,font,attr,lookupcache,step,dataset,sequence,rlmode,skiphash,handler)
 local done=false
 local sweep=sweephead[head]
 local start
 if sweep then
  start=sweep
  sweephead[head]=false
 else
  start=head
 end
 while start do
  local char,id=ischar(start,font)
  if char then
   local a 
   if attr then
    a=getglyphdata(start)
   end
   if not a or (a==attr) then
    local lookupmatch=lookupcache[char]
    if lookupmatch then
     local ok
     head,start,ok=handler(head,start,dataset,sequence,lookupmatch,rlmode,skiphash,step)
     if ok then
      done=true
     end
    end
    if start then
     start=getnext(start)
    end
   else
    start=getnext(start)
   end
  elseif char==false then
   return head,done
  elseif sweep then
   return head,done
  else
   start=getnext(start)
  end
 end
 return head,done
end
local function t_run_single(start,stop,font,attr,lookupcache)
 local lastd=nil
 while start~=stop do
  local char=ischar(start,font)
  if char then
   local a 
   if attr then
    a=getglyphdata(start)
   end
   local startnext=getnext(start)
   if not a or (a==attr) then
    local lookupmatch=lookupcache[char]
    if lookupmatch then
     local s=startnext
     local ss=nil
     local sstop=s==stop
     if not s then
      s=ss
      ss=nil
     end
     while getid(s)==disc_code do
      ss=getnext(s)
      s=getreplace(s)
      if not s then
       s=ss
       ss=nil
      end
     end
     local l=nil
     local d=0
     while s do
      local char=ischar(s,font)
      if char then
       local lg=lookupmatch[char]
       if lg then
        if sstop then
         d=1
        elseif d>0 then
         d=d+1
        end
        l=lg
        s=getnext(s)
        sstop=s==stop
        if not s then
         s=ss
         ss=nil
        end
        while getid(s)==disc_code do
         ss=getnext(s)
         s=getreplace(s)
         if not s then
          s=ss
          ss=nil
         end
        end
        lookupmatch=lg
       else
        break
       end
      else
       break
      end
     end
     if l and l.ligature then 
      lastd=d
     end
    else
    end
   else
   end
   if lastd then
    return lastd
   end
   start=startnext
  else
   break
  end
 end
 return 0
end
local function k_run_single(sub,injection,last,font,attr,lookupcache,step,dataset,sequence,rlmode,skiphash,handler)
 local a 
 if attr then
  a=getglyphdata(sub)
 end
 if not a or (a==attr) then
  for n in nextnode,sub do 
   if n==last then
    break
   end
   local char=ischar(n,font)
   if char then
    local lookupmatch=lookupcache[char]
    if lookupmatch then
     local h,d,ok=handler(sub,n,dataset,sequence,lookupmatch,rlmode,skiphash,step,injection)
     if ok then
      return true
     end
    end
   end
  end
 end
end
local function c_run_multiple(head,font,attr,steps,nofsteps,dataset,sequence,rlmode,skiphash,handler)
 local done=false
 local sweep=sweephead[head]
 local start
 if sweep then
  start=sweep
  sweephead[head]=false
 else
  start=head
 end
 while start do
  local char=ischar(start,font)
  if char then
   local a 
   if attr then
    a=getglyphdata(start)
   end
   if not a or (a==attr) then
    for i=1,nofsteps do
     local step=steps[i]
     local lookupcache=step.coverage
     local lookupmatch=lookupcache[char]
     if lookupmatch then
      local ok
      head,start,ok=handler(head,start,dataset,sequence,lookupmatch,rlmode,skiphash,step)
      if ok then
       done=true
       break
      elseif not start then
       break
      end
     end
    end
    if start then
     start=getnext(start)
    end
   else
    start=getnext(start)
   end
  elseif char==false then
   return head,done
  elseif sweep then
   return head,done
  else
   start=getnext(start)
  end
 end
 return head,done
end
local function t_run_multiple(start,stop,font,attr,steps,nofsteps)
 local lastd=nil
 while start~=stop do
  local char=ischar(start,font)
  if char then
   local a 
   if attr then
    a=getglyphdata(start)
   end
   local startnext=getnext(start)
   if not a or (a==attr) then
    for i=1,nofsteps do
     local step=steps[i]
     local lookupcache=step.coverage
     local lookupmatch=lookupcache[char]
     if lookupmatch then
      local s=startnext
      local ss=nil
      local sstop=s==stop
      if not s then
       s=ss
       ss=nil
      end
      while getid(s)==disc_code do
       ss=getnext(s)
       s=getreplace(s)
       if not s then
        s=ss
        ss=nil
       end
      end
      local l=nil
      local d=0
      while s do
       local char=ischar(s)
       if char then
        local lg=lookupmatch[char]
        if lg then
         if sstop then
          d=1
         elseif d>0 then
          d=d+1
         end
         l=lg
         s=getnext(s)
         sstop=s==stop
         if not s then
          s=ss
          ss=nil
         end
         while getid(s)==disc_code do
          ss=getnext(s)
          s=getreplace(s)
          if not s then
           s=ss
           ss=nil
          end
         end
         lookupmatch=lg
        else
         break
        end
       else
        break
       end
      end
      if l and l.ligature then
       lastd=d
      end
     end
    end
   else
   end
   if lastd then
    return lastd
   end
   start=startnext
  else
   break
  end
 end
 return 0
end
local function k_run_multiple(sub,injection,last,font,attr,steps,nofsteps,dataset,sequence,rlmode,skiphash,handler)
 local a 
 if attr then
  a=getglyphdata(sub)
 end
 if not a or (a==attr) then
  for n in nextnode,sub do 
   if n==last then
    break
   end
   local char=ischar(n)
   if char then
    for i=1,nofsteps do
     local step=steps[i]
     local lookupcache=step.coverage
     local lookupmatch=lookupcache[char]
     if lookupmatch then
      local h,d,ok=handler(sub,n,dataset,sequence,lookupmatch,rlmode,skiphash,step,injection) 
      if ok then
       return true
      end
     end
    end
   end
  end
 end
end
local txtdirstate,pardirstate  do 
 local getdirection=nuts.getdirection
 local lefttoright=0
 local righttoleft=1
 txtdirstate=function(start,stack,top,rlparmode)
  local dir,pop=getdirection(start)
  if pop then
   if top==1 then
    return 0,rlparmode
   else
    top=top-1
    if stack[top]==righttoleft then
     return top,-1
    else
     return top,1
    end
   end
  elseif dir==lefttoright then
   top=top+1
   stack[top]=lefttoright
   return top,1
  elseif dir==righttoleft then
   top=top+1
   stack[top]=righttoleft
   return top,-1
  else
   return top,rlparmode
  end
 end
 pardirstate=function(start)
  local dir=getdirection(start)
  if dir==lefttoright then
   return 1,1
  elseif dir==righttoleft then
   return -1,-1
  elseif dir=="TLT" then
   return 1,1
  elseif dir=="TRT" then
   return -1,-1
  else
   return 0,0
  end
 end
end
otf.helpers=otf.helpers or {}
otf.helpers.txtdirstate=txtdirstate
otf.helpers.pardirstate=pardirstate
do
 local fastdisc=true
 local testdics=false
 directives.register("otf.fastdisc",function(v) fastdisc=v end)
 local otfdataset=nil 
 local getfastdisc={ __index=function(t,k)
  local v=usesfont(k,currentfont)
  t[k]=v
  return v
 end }
 local getfastspace={ __index=function(t,k)
  local v=isspace(k,threshold) or false
  t[k]=v
  return v
 end }
 function otf.featuresprocessor(head,font,attr,direction,n)
  local sequences=sequencelists[font] 
  nesting=nesting+1
  if nesting==1 then
   currentfont=font
   tfmdata=fontdata[font]
   descriptions=tfmdata.descriptions 
   characters=tfmdata.characters   
   local resources=tfmdata.resources
   marks=resources.marks
   classes=resources.classes
   threshold,
   factor=getthreshold(font)
   checkmarks=tfmdata.properties.checkmarks
   if not otfdataset then
    otfdataset=otf.dataset
   end
   discs=fastdisc and n and n>1 and setmetatable({},getfastdisc) 
   spaces=setmetatable({},getfastspace)
  elseif currentfont~=font then
   report_warning("nested call with a different font, level %s, quitting",nesting)
   nesting=nesting-1
   return head,false
  end
  if trace_steps then
   checkstep(head)
  end
  local initialrl=0
  if getid(head)==localpar_code and start_of_par(head) then
   initialrl=pardirstate(head)
  elseif direction==1 or direction=="TRT" then
   initialrl=-1
  end
  local datasets=otfdataset(tfmdata,font,attr)
  local dirstack={ nil } 
  sweephead={}
  for s=1,#datasets do
   local dataset=datasets[s]
   local attribute=dataset[2]
   local sequence=dataset[3] 
   local rlparmode=initialrl
   local topstack=0
   local typ=sequence.type
   local gpossing=typ=="gpos_single" or typ=="gpos_pair" 
   local forcetestrun=typ=="gsub_ligature" 
   local handler=handlers[typ] 
   local steps=sequence.steps
   local nofsteps=sequence.nofsteps
   local skiphash=sequence.skiphash
   if not steps then
    local h,ok=handler(head,dataset,sequence,initialrl,font,attr)
    if h and h~=head then
     head=h
    end
   elseif typ=="gsub_reversecontextchain" then
    local start=find_node_tail(head)
    local rlmode=0 
    local merged=steps.merged
    while start do
     local char=ischar(start,font)
     if char then
      local m=merged[char]
      if m then
       local a 
       if attr then
        a=getglyphdata(start)
       end
       if not a or (a==attr) then
        for i=m[1],m[2] do
         local step=steps[i]
         local lookupcache=step.coverage
         local lookupmatch=lookupcache[char]
         if lookupmatch then
          local ok
          head,start,ok=handler(head,start,dataset,sequence,lookupmatch,rlmode,skiphash,step)
          if ok then
           break
          end
         end
        end
        if start then
         start=getprev(start)
        end
       else
        start=getprev(start)
       end
      else
       start=getprev(start)
      end
     else
      start=getprev(start)
     end
    end
   else
    local start=head
    local rlmode=initialrl
    if nofsteps==1 then 
     local step=steps[1]
     local lookupcache=step.coverage
     while start do
      local char,id=ischar(start,font)
      if char then
       if skiphash and skiphash[char] then 
        start=getnext(start)
       else
        local lookupmatch=lookupcache[char]
        if lookupmatch then
         local a 
         if attr then
          if getglyphdata(start)==attr and (not attribute or getstate(start,attribute)) then
           a=true
          end
         elseif not attribute or getstate(start,attribute) then
          a=true
         end
         if a then
          local ok,df
          head,start,ok,df=handler(head,start,dataset,sequence,lookupmatch,rlmode,skiphash,step)
          if df then
          elseif start then
           start=getnext(start)
          end
         else
          start=getnext(start)
         end
        else
           start=getnext(start)
        end
       end
      elseif char==false or id==glue_code then
       start=getnext(start)
      elseif id==disc_code then
       if not discs or discs[start]==true then
        local ok
        if gpossing then
         start,ok=kernrun(start,k_run_single,font,attr,lookupcache,step,dataset,sequence,rlmode,skiphash,handler)
        elseif forcetestrun then
         start,ok=testrun(start,t_run_single,c_run_single,font,attr,lookupcache,step,dataset,sequence,rlmode,skiphash,handler)
        else
         start,ok=comprun(start,c_run_single,font,attr,lookupcache,step,dataset,sequence,rlmode,skiphash,handler)
        end
       else
        start=getnext(start)
       end
      elseif id==math_code then
       start=getnext(end_of_math(start))
      elseif id==dir_code then
       topstack,rlmode=txtdirstate(start,dirstack,topstack,rlparmode)
       start=getnext(start)
      else
       start=getnext(start)
      end
     end
    else
     local merged=steps.merged
     while start do
      local char,id=ischar(start,font)
      if char then
       if skiphash and skiphash[char] then 
        start=getnext(start)
       else
        local m=merged[char]
        if m then
         local a 
         if attr then
          if getglyphdata(start)==attr and (not attribute or getstate(start,attribute)) then
           a=true
          end
         elseif not attribute or getstate(start,attribute) then
          a=true
         end
         if a then
          local ok,df
          for i=m[1],m[2] do
           local step=steps[i]
           local lookupcache=step.coverage
           local lookupmatch=lookupcache[char]
           if lookupmatch then
            head,start,ok,df=handler(head,start,dataset,sequence,lookupmatch,rlmode,skiphash,step)
            if df then
             break
            elseif ok then
             break
            elseif not start then
             break
            end
           end
          end
          if df then
          elseif start then
           start=getnext(start)
          end
         else
          start=getnext(start)
         end
        else
         start=getnext(start)
        end
       end
      elseif char==false or id==glue_code then
       start=getnext(start)
      elseif id==disc_code then
       if not discs or discs[start]==true then
        local ok
        if gpossing then
         start,ok=kernrun(start,k_run_multiple,font,attr,steps,nofsteps,dataset,sequence,rlmode,skiphash,handler)
        elseif forcetestrun then
         start,ok=testrun(start,t_run_multiple,c_run_multiple,font,attr,steps,nofsteps,dataset,sequence,rlmode,skiphash,handler)
        else
         start,ok=comprun(start,c_run_multiple,font,attr,steps,nofsteps,dataset,sequence,rlmode,skiphash,handler)
        end
       else
        start=getnext(start)
       end
      elseif id==math_code then
       start=getnext(end_of_math(start))
      elseif id==dir_code then
       topstack,rlmode=txtdirstate(start,dirstack,topstack,rlparmode)
       start=getnext(start)
      else
       start=getnext(start)
      end
     end
    end
   end
   if trace_steps then 
    registerstep(head)
   end
  end
  nesting=nesting-1
  return head
 end
 function otf.datasetpositionprocessor(head,font,direction,dataset)
  currentfont=font
  tfmdata=fontdata[font]
  descriptions=tfmdata.descriptions 
  characters=tfmdata.characters   
  local resources=tfmdata.resources
  marks=resources.marks
  classes=resources.classes
  threshold,
  factor=getthreshold(font)
  checkmarks=tfmdata.properties.checkmarks
  if type(dataset)=="number" then
   dataset=otfdataset(tfmdata,font,0)[dataset]
  end
  local sequence=dataset[3] 
  local typ=sequence.type
  local handler=handlers[typ] 
  local steps=sequence.steps
  local nofsteps=sequence.nofsteps
  local done=false
  local dirstack={ nil } 
  local start=head
  local initialrl=(direction==1 or direction=="TRT") and -1 or 0
  local rlmode=initialrl
  local rlparmode=initialrl
  local topstack=0
  local merged=steps.merged
  local position=0
  while start do
   local char,id=ischar(start,font)
   if char then
    position=position+1
    local m=merged[char]
    if m then
     if skiphash and skiphash[char] then 
      start=getnext(start)
     else
      for i=m[1],m[2] do
       local step=steps[i]
       local lookupcache=step.coverage
       local lookupmatch=lookupcache[char]
       if lookupmatch then
        local ok
        head,start,ok=handler(head,start,dataset,sequence,lookupmatch,rlmode,skiphash,step)
        if ok then
         break
        elseif not start then
         break
        end
       end
      end
      if start then
       start=getnext(start)
      end
     end
    else
     start=getnext(start)
    end
   elseif char==false or id==glue_code then
    start=getnext(start)
   elseif id==math_code then
    start=getnext(end_of_math(start))
   elseif id==dir_code then
    topstack,rlmode=txtdirstate(start,dirstack,topstack,rlparmode)
    start=getnext(start)
   else
    start=getnext(start)
   end
  end
  return head
 end
end
local plugins={}
otf.plugins=plugins
local report=logs.reporter("fonts")
function otf.registerplugin(name,f)
 if type(name)=="string" and type(f)=="function" then
  plugins[name]={ name,f }
  report()
  report("plugin %a has been loaded, please be aware of possible side effects",name)
  report()
  if logs.pushtarget then
   logs.pushtarget("log")
  end
  report("Plugins are not officially supported unless stated otherwise. This is because")
  report("they bypass the regular font handling and therefore some features in ConTeXt")
  report("(especially those related to fonts) might not work as expected or might not work")
  report("at all. Some plugins are for testing and development only and might change")
  report("whenever we feel the need for it.")
  report()
  if logs.poptarget then
   logs.poptarget()
  end
 end
end
function otf.plugininitializer(tfmdata,value)
 if type(value)=="string" then
  tfmdata.shared.plugin=plugins[value]
 end
end
function otf.pluginprocessor(head,font,attr,direction) 
 local s=fontdata[font].shared
 local p=s and s.plugin
 if p then
  if trace_plugins then
   report_process("applying plugin %a",p[1])
  end
  return p[2](head,font,attr,direction)
 else
  return head,false
 end
end
function otf.featuresinitializer(tfmdata,value)
end
registerotffeature {
 name="features",
 description="features",
 default=true,
 initializers={
  position=1,
  node=otf.featuresinitializer,
  plug=otf.plugininitializer,
 },
 processors={
  node=otf.featuresprocessor,
  plug=otf.pluginprocessor,
 }
}
local function markinitializer(tfmdata,value)
 local properties=tfmdata.properties
 properties.checkmarks=value
end
registerotffeature {
 name="checkmarks",
 description="check mark widths",
 default=true,
 initializers={
  node=markinitializer,
 },
}
otf.handlers=handlers
if context then

--removed

else
end
local setspacekerns=nodes.injections.setspacekerns if not setspacekerns then os.exit() end
local tag="kern"
 function handlers.trigger_space_kerns(head,dataset,sequence,initialrl,font,attr)
  local shared=fontdata[font].shared
  local features=shared and shared.features
  local enabled=features and features.spacekern and features[tag]
  if enabled then
   setspacekerns(font,sequence)
  end
  return head,enabled
 end
local function hasspacekerns(data)
 local resources=data.resources
 local sequences=resources.sequences
 local validgpos=resources.features.gpos
 if validgpos and sequences then
  for i=1,#sequences do
   local sequence=sequences[i]
   local steps=sequence.steps
   if steps and sequence.features[tag] then
    local kind=sequence.type
    if kind=="gpos_pair" or kind=="gpos_single" then
     for i=1,#steps do
      local step=steps[i]
      local coverage=step.coverage
      local rules=step.rules
      if rules then
      elseif not coverage then
      elseif kind=="gpos_single" then
      elseif kind=="gpos_pair" then
       local format=step.format
       if format=="move" or format=="kern" then
        local kerns=coverage[32]
        if kerns then
         return true
        end
        for k,v in next,coverage do
         if v[32] then
          return true
         end
        end
       elseif format=="pair" then
        local kerns=coverage[32]
        if kerns then
         for k,v in next,kerns do
          local one=v[1]
          if one and one~=true then
           return true
          end
         end
        end
        for k,v in next,coverage do
         local kern=v[32]
         if kern then
          local one=kern[1]
          if one and one~=true then
           return true
          end
         end
        end
       end
      end
     end
    end
   end
  end
 end
 return false
end
otf.readers.registerextender {
 name="spacekerns",
 action=function(data)
  data.properties.hasspacekerns=hasspacekerns(data)
 end
}
local function spaceinitializer(tfmdata,value) 
 local resources=tfmdata.resources
 local spacekerns=resources and resources.spacekerns
 if value and spacekerns==nil then
  local rawdata=tfmdata.shared and tfmdata.shared.rawdata
  local properties=rawdata.properties
  if properties and properties.hasspacekerns then
   local sequences=resources.sequences
   local validgpos=resources.features.gpos
   if validgpos and sequences then
    local left={}
    local right={}
    local last=0
    local feat=nil
    for i=1,#sequences do
     local sequence=sequences[i]
     local steps=sequence.steps
     if steps then
      local kern=sequence.features[tag]
      if kern then
       local kind=sequence.type
       if kind=="gpos_pair" or kind=="gpos_single" then
        if feat then
         for script,languages in next,kern do
          local f=feat[script]
          if f then
           for l in next,languages do
            f[l]=true
           end
          else
           feat[script]=languages
          end
         end
        else
         feat=kern
        end
        for i=1,#steps do
         local step=steps[i]
         local coverage=step.coverage
         local rules=step.rules
         if rules then
         elseif not coverage then
         elseif kind=="gpos_single" then
         elseif kind=="gpos_pair" then
          local format=step.format
          if format=="move" or format=="kern" then
           local kerns=coverage[32]
           if kerns then
            for k,v in next,kerns do
             right[k]=v
            end
           end
           for k,v in next,coverage do
            local kern=v[32]
            if kern then
             left[k]=kern
            end
           end
          elseif format=="pair" then
           local kerns=coverage[32]
           if kerns then
            for k,v in next,kerns do
             local one=v[1]
             if one and one~=true then
              right[k]=one[3]
             end
            end
           end
           for k,v in next,coverage do
            local kern=v[32]
            if kern then
             local one=kern[1]
             if one and one~=true then
              left[k]=one[3]
             end
            end
           end
          end
         end
        end
        last=i
       end
      else
      end
     end
    end
    left=next(left)  and left  or false
    right=next(right) and right or false
    if left or right then
     spacekerns={
      left=left,
      right=right,
     }
     if last>0 then
      local triggersequence={
       features={ [tag]=feat or { dflt={ dflt=true,} } },
       flags=noflags,
       name="trigger_space_kerns",
       order={ tag },
       type="trigger_space_kerns",
       left=left,
       right=right,
      }
      insert(sequences,last,triggersequence)
     end
    end
   end
  end
  resources.spacekerns=spacekerns
 end
 return spacekerns
end
registerotffeature {
 name="spacekern",
 description="space kern injection",
 default=true,
 initializers={
  node=spaceinitializer,
 },
}

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['font-osd']={ 
 version=1.001,
 comment="companion to font-ini.mkiv",
 author="Kai Eigner, TAT Zetwerk / Hans Hagen, PRAGMA ADE",
 copyright="TAT Zetwerk / PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
local insert,imerge,copy,tohash=table.insert,table.imerge,table.copy,table.tohash
local next,type=next,type
local report=logs.reporter("otf","devanagari")
fonts=fonts       or {}
fonts.analyzers=fonts.analyzers   or {}
fonts.analyzers.methods=fonts.analyzers.methods or { node={ otf={} } }
local otf=fonts.handlers.otf
local handlers=otf.handlers
local methods=fonts.analyzers.methods
local otffeatures=fonts.constructors.features.otf
local registerotffeature=otffeatures.register
local nuts=nodes.nuts
local getnext=nuts.getnext
local getprev=nuts.getprev
local getboth=nuts.getboth
local getid=nuts.getid
local getchar=nuts.getchar
local getfont=nuts.getfont
local getsubtype=nuts.getsubtype
local setlink=nuts.setlink
local setnext=nuts.setnext
local setprev=nuts.setprev
local setchar=nuts.setchar
local getprop=nuts.getprop
local setprop=nuts.setprop
local getstate=nuts.getstate
local setstate=nuts.setstate
local ischar=nuts.ischar
local insert_node_after=nuts.insert_after
local copy_node=nuts.copy
local remove_node=nuts.remove
local flush_list=nuts.flush_list
local flush_node=nuts.flush_node
local copyinjection=nodes.injections.copy 
local unsetvalue=attributes.unsetvalue
local fontdata=fonts.hashes.identifiers
local a_syllabe=attributes.private('syllabe')
local dotted_circle=0x25CC
local c_nbsp=0x00A0
local c_zwnj=0x200C
local c_zwj=0x200D
local states=fonts.analyzers.states 
local s_rphf=states.rphf
local s_half=states.half
local s_pref=states.pref
local s_blwf=states.blwf
local s_pstf=states.pstf
local s_init=states.init
local replace_all_nbsp=nil
replace_all_nbsp=function(head) 
 replace_all_nbsp=typesetters and typesetters.characters and typesetters.characters.replacenbspaces or function(head)
  return head
 end
 return replace_all_nbsp(head)
end
local processcharacters=nil
if context then

--removed

else
 function processcharacters(head,font)
  local processors=fontdata[font].shared.processes
  for i=1,#processors do
   head=processors[i](head,font,0)
  end
  return head
 end
end
local indicgroups=characters and characters.indicgroups
if not indicgroups and characters then
 local indic={
  c={},
  i={},
  d={},
  m={},
  s={},
  o={},
 }
 local indicmarks={
  l={},
  t={},
  b={},
  r={},
  s={},
 }
 local indicclasses={
  nukta={},
  halant={},
  ra={},
  anudatta={},
 }
 local indicorders={
  bp={},
  ap={},
  bs={},
  as={},
  bh={},
  ah={},
  bm={},
  am={},
 }
 for k,v in next,characters.data do
  local i=v.indic
  if i then
   indic[i][k]=true
   i=v.indicmark
   if i then
    if i=="s" then
     local s=v.specials
     indicmarks[i][k]={ s[2],s[3] }
    else
     indicmarks[i][k]=true
    end
   end
   i=v.indicclass
   if i then
    indicclasses[i][k]=true
   end
   i=v.indicorder
   if i then
    indicorders[i][k]=true
   end
  end
 end
 indicgroups={
  consonant=indic.c,
  independent_vowel=indic.i,
  dependent_vowel=indic.d,
  vowel_modifier=indic.m,
  stress_tone_mark=indic.s,
  pre_mark=indicmarks.l,
  above_mark=indicmarks.t,
  below_mark=indicmarks.b,
  post_mark=indicmarks.r,
  twopart_mark=indicmarks.s,
  nukta=indicclasses.nukta,
  halant=indicclasses.halant,
  ra=indicclasses.ra,
  anudatta=indicclasses.anudatta,
  before_postscript=indicorders.bp,
  after_postscript=indicorders.ap,
  before_half=indicorders.bh,
  after_half=indicorders.ah,
  before_subscript=indicorders.bs,
  after_subscript=indicorders.as,
  before_main=indicorders.bm,
  after_main=indicorders.am,
 }
 indic=nil
 indicmarks=nil
 indicclasses=nil
 indicorders=nil
 characters.indicgroups=indicgroups
end
local consonant=indicgroups.consonant
local independent_vowel=indicgroups.independent_vowel
local dependent_vowel=indicgroups.dependent_vowel
local vowel_modifier=indicgroups.vowel_modifier
local stress_tone_mark=indicgroups.stress_tone_mark
local pre_mark=indicgroups.pre_mark
local above_mark=indicgroups.above_mark
local below_mark=indicgroups.below_mark
local post_mark=indicgroups.post_mark
local twopart_mark=indicgroups.twopart_mark
local nukta=indicgroups.nukta
local halant=indicgroups.halant
local ra=indicgroups.ra
local anudatta=indicgroups.anudatta
local before_postscript=indicgroups.before_postscript
local after_postscript=indicgroups.after_postscript
local before_half=indicgroups.before_half
local after_half=indicgroups.after_half
local before_subscript=indicgroups.before_subscript
local after_subscript=indicgroups.after_subscript
local before_main=indicgroups.before_main
local after_main=indicgroups.after_main
local mark_four=table.merged (
 pre_mark,
 above_mark,
 below_mark,
 post_mark
)
local mark_above_below_post=table.merged (
 above_mark,
 below_mark,
 post_mark
)
local zw_char={ 
 [c_zwnj]=true,
 [c_zwj ]=true,
}
local dflt_true={
 dflt=true,
}
local two_defaults={}
local one_defaults={}
local false_flags={ false,false,false,false }
local sequence_reorder_matras={
 features={ dv01=two_defaults },
 flags=false_flags,
 name="dv01_reorder_matras",
 order={ "dv01" },
 type="devanagari_reorder_matras",
 nofsteps=1,
 steps={
  {
   coverage=pre_mark,
  }
 }
}
local sequence_reorder_reph={
 features={ dv02=two_defaults },
 flags=false_flags,
 name="dv02_reorder_reph",
 order={ "dv02" },
 type="devanagari_reorder_reph",
 nofsteps=1,
 steps={
  {
   coverage={},
  }
 }
}
local sequence_reorder_pre_base_reordering_consonants={
 features={ dv03=one_defaults },
 flags=false_flags,
 name="dv03_reorder_pre_base_reordering_consonants",
 order={ "dv03" },
 type="devanagari_reorder_pre_base_reordering_consonants",
 nofsteps=1,
 steps={
  {
   coverage={},
  }
 }
}
local sequence_remove_joiners={
 features={ dv04=one_defaults },
 flags=false_flags,
 name="dv04_remove_joiners",
 order={ "dv04" },
 type="devanagari_remove_joiners",
 nofsteps=1,
 steps={
  {
     coverage=zw_char,
  },
 }
}
local basic_shaping_forms={
 akhn=true,
 blwf=true,
 cjct=true,
 half=true,
 nukt=true,
 pref=true,
 pstf=true,
 rkrf=true,
 rphf=true,
 vatu=true,
 locl=true,
}
local valid={
 abvs=true,
 akhn=true,
 blwf=true,
 calt=true,
 cjct=true,
 half=true,
 haln=true,
 nukt=true,
 pref=true,
 pres=true,
 pstf=true,
 psts=true,
 rkrf=true,
 rphf=true,
 vatu=true,
 pres=true,
 abvs=true,
 blws=true,
 psts=true,
 haln=true,
 calt=true,
 locl=true,
}
local scripts={}
local scripts_one={ "deva","mlym","beng","gujr","guru","knda","orya","taml","telu" }
local scripts_two={ "dev2","mlm2","bng2","gjr2","gur2","knd2","ory2","tml2","tel2" }
local nofscripts=#scripts_one
for i=1,nofscripts do
 local one=scripts_one[i]
 local two=scripts_two[i]
 scripts[one]=true
 scripts[two]=true
 two_defaults[two]=dflt_true
 one_defaults[one]=dflt_true
 one_defaults[two]=dflt_true
end
local function valid_one(s) for i=1,nofscripts do if s[scripts_one[i]] then return true end end end
local function valid_two(s) for i=1,nofscripts do if s[scripts_two[i]] then return true end end end
local function initializedevanagi(tfmdata)
 local script,language=otf.scriptandlanguage(tfmdata,attr) 
 if scripts[script] then
  local resources=tfmdata.resources
  local devanagari=resources.devanagari
  if not devanagari then
   report("adding devanagari features to font")
   local gsubfeatures=resources.features.gsub
   local sequences=resources.sequences
   local sharedfeatures=tfmdata.shared.features
   gsubfeatures["dv01"]=two_defaults 
   gsubfeatures["dv02"]=two_defaults 
   gsubfeatures["dv03"]=one_defaults 
   gsubfeatures["dv04"]=one_defaults
   local reorder_pre_base_reordering_consonants=copy(sequence_reorder_pre_base_reordering_consonants)
   local reorder_reph=copy(sequence_reorder_reph)
   local reorder_matras=copy(sequence_reorder_matras)
   local remove_joiners=copy(sequence_remove_joiners)
   local lastmatch=0
   for s=1,#sequences do 
    local features=sequences[s].features
    if features then
     for k,v in next,features do
      if k=="locl" then
       local steps=sequences[s].steps
       local nofsteps=sequences[s].nofsteps
       for i=1,nofsteps do
        local step=steps[i]
        local coverage=step.coverage
        if coverage then
         for k,v in next,pre_mark do
          local locl=coverage[k]
          if locl then
           if #locl>0 then	
            for j=1,#locl do
             local ck=locl[j]
             local f=ck[4]
             local chainlookups=ck[6]
             if chainlookups then
              local chainlookup=chainlookups[f]
              for j=1,#chainlookup do
               local chainstep=chainlookup[j]
               local steps=chainstep.steps
               local nofsteps=chainstep.nofsteps
               for i=1,nofsteps do
                local step=steps[i]
                local coverage=step.coverage
                if coverage then
                 locl=coverage[k]
                end
               end
              end
             end
            end
           end
           if locl then
            reorder_matras.steps[1].coverage[locl]=true
           end
          end
         end
        end
       end
      end
      if basic_shaping_forms[k] then
       lastmatch=lastmatch+1
       if s~=lastmatch then
        table.insert(sequences,lastmatch,table.remove(sequences,s))
       end
      end
     end
    end
   end
   local insertindex=lastmatch+1
   if tfmdata.properties.language then
    dflt_true[tfmdata.properties.language]=true
   end
   insert(sequences,insertindex,reorder_pre_base_reordering_consonants)
   insert(sequences,insertindex,reorder_reph)
   insert(sequences,insertindex,reorder_matras)
   insert(sequences,insertindex,remove_joiners)
   local blwfcache={}
   local vatucache={}
   local pstfcache={}
   local seqsubset={}
   local rephstep={
    coverage={} 
   }
   local devanagari={
    reph=false,
    vattu=false,
    blwfcache=blwfcache,
    vatucache=vatucache,
    pstfcache=pstfcache,
    seqsubset=seqsubset,
    reorderreph=rephstep,
   }
   reorder_reph.steps={ rephstep }
   local pre_base_reordering_consonants={}
   reorder_pre_base_reordering_consonants.steps[1].coverage=pre_base_reordering_consonants
   resources.devanagari=devanagari
   for s=1,#sequences do
    local sequence=sequences[s]
    local steps=sequence.steps
    local nofsteps=sequence.nofsteps
    local features=sequence.features
    local has_rphf=features.rphf
    local has_blwf=features.blwf
    local has_vatu=features.vatu
    local has_pstf=features.pstf
    if has_rphf and has_rphf[script] then
     devanagari.reph=true
    elseif (has_blwf and has_blwf[script] ) or (has_vatu and has_vatu[script] ) then
     devanagari.vattu=true
     for i=1,nofsteps do
      local step=steps[i]
      local coverage=step.coverage
      if coverage then
       for k,v in next,coverage do
        for h,w in next,halant do
         if v[h] then
          if not blwfcache[k] then
           blwfcache[k]=v
          end
         end
         if has_vatu and has_vatu[script] and not vatucache[k] then
          vatucache[k]=v
         end
        end
       end
      end
     end
    elseif has_pstf and has_pstf[script] then
     for i=1,nofsteps do
      local step=steps[i]
      local coverage=step.coverage
      if coverage then
       for k,v in next,coverage do
        if not pstfcache[k] then
         pstfcache[k]=v
        end
       end
       for k,v in next,ra do
        local r=coverage[k]
        if r then
         local found=false
         if #r>0 then  
          for j=1,#r do
           local ck=r[j]
           local f=ck[4]
           local chainlookups=ck[6]
           if chainlookups and chainlookups[f] then	
            local chainlookup=chainlookups[f]
            for j=1,#chainlookup do
             local chainstep=chainlookup[j]
             local steps=chainstep.steps
             local nofsteps=chainstep.nofsteps
             for i=1,nofsteps do
              local step=steps[i]
              local coverage=step.coverage
              if coverage then
               local h=coverage[k]
               if h then
                for k,v in next,h do
                 found=v and v.ligature
                 if found then
                  pre_base_reordering_consonants[found]=true
                  break
                 end
                end
                if found then
                 break
                end
               end
              end
             end
            end
           end
          end
         else
          for k,v in next,r do
           found=v and v.ligature
           if found then
            pre_base_reordering_consonants[found]=true
            break
           end
          end
         end
         if found then
          break
         end
        end
       end
      end
     end
    end
    for kind,spec in next,features do
     if valid[kind] and valid_two(spec)then
      for i=1,nofsteps do
       local step=steps[i]
       local coverage=step.coverage
       if coverage then
        local reph,rephbase=false,false
        if kind=="rphf" then
         for k,v in next,ra do
          local r=coverage[k]
          if r then
           rephbase=k
           local h=false
           if #r>0 then	
            for j=1,#r do
             local ck=r[j]
             local f=ck[4]
             local chainlookups=ck[6]
             if chainlookups then
              local chainlookup=chainlookups[f]
              for j=1,#chainlookup do
               local chainstep=chainlookup[j]
               local steps=chainstep.steps
               local nofsteps=chainstep.nofsteps
               for i=1,nofsteps do
                local step=steps[i]
                local coverage=step.coverage
                if coverage then
                 local r=coverage[k]
                 if r then
                  for k,v in next,halant do
                   local h=r[k]
                   if h then
                    reph=h.ligature or false
                    break
                   end
                  end
                  if h then
                   break
                  end
                 end
                end
               end
              end
             end
            end
           else
            for k,v in next,halant do
             local h=r[k]
             if h then
              reph=h.ligature or false
              break
             end
            end
           end
           if reph then
            break
           end
          end
         end
        end
        seqsubset[#seqsubset+1]={ kind,coverage,reph,rephbase }
       end
      end
     end
     if kind=="pref" then
      local steps=sequence.steps
      local nofsteps=sequence.nofsteps
      for i=1,nofsteps do
       local step=steps[i]
       local coverage=step.coverage
       if coverage then
        for k,v in next,halant do
         local h=coverage[k]
         if h then
          local found=false
          if #h>0 then 
           for j=1,#h do
            local ck=h[j]
            local f=ck[4]
            local chainlookups=ck[6]
            if chainlookups then
             local chainlookup=chainlookups[f]
             for j=1,#chainlookup do
              local chainstep=chainlookup[j]
              local steps=chainstep.steps
              local nofsteps=chainstep.nofsteps
              for i=1,nofsteps do
               local step=steps[i]
               local coverage=step.coverage
               if coverage then
                local h=coverage[k]
                if h then
                 for k,v in next,h do
                  found=v and v.ligature
                  if found then
                   pre_base_reordering_consonants[found]=true
                   break
                  end
                 end
                 if found then
                  break
                 end
                end
               end
              end
             end
            end
           end
          else
           for k,v in next,h do
            found=v and v.ligature
            if found then
             pre_base_reordering_consonants[found]=true
             break
            end
           end
          end
          if found then
           break
          end
         end
        end
       end
      end
     end
    end
   end
   if two_defaults[script] then
    sharedfeatures["dv01"]=true 
    sharedfeatures["dv02"]=true 
    sharedfeatures["dv03"]=true 
    sharedfeatures["dv04"]=true 
   elseif one_defaults[script] then
    sharedfeatures["dv03"]=true 
    sharedfeatures["dv04"]=true 
   end
   if script=="mlym" or script=="taml" then
    devanagari.left_matra_before_base=true
   end
  end
 end
end
registerotffeature {
 name="devanagari",
 description="inject additional features",
 default=true,
 initializers={
  node=initializedevanagi,
 },
}
local show_syntax_errors=false
local function inject_syntax_error(head,current,char)
 local signal=copy_node(current)
 copyinjection(signal,current)
 if pre_mark[char] then
  setchar(signal,dotted_circle)
 else
  setchar(current,dotted_circle)
 end
 return insert_node_after(head,current,signal)
end
local function initialize_one(font,attr) 
 local tfmdata=fontdata[font]
 local datasets=otf.dataset(tfmdata,font,attr) 
 local devanagaridata=datasets.devanagari
 if not devanagaridata then
  devanagaridata={
   reph=false,
   vattu=false,
   blwfcache={},
   vatucache={},
   pstfcache={},
  }
  datasets.devanagari=devanagaridata
  local resources=tfmdata.resources
  local devanagari=resources.devanagari
  for s=1,#datasets do
   local dataset=datasets[s]
   if dataset and dataset[1] then 
    local kind=dataset[4]
    if kind=="rphf" then
     devanagaridata.reph=true
    elseif kind=="blwf" or kind=="vatu" then
     devanagaridata.vattu=true
     devanagaridata.blwfcache=devanagari.blwfcache
     devanagaridata.vatucache=devanagari.vatucache
     devanagaridata.pstfcache=devanagari.pstfcache
    end
   end
  end
 end
 return devanagaridata.reph,devanagaridata.vattu,devanagaridata.blwfcache,devanagaridata.vatucache,devanagaridata.pstfcache
end
local function contextchain(contexts,n)
 local char=getchar(n)
 for k=1,#contexts do
  local ck=contexts[k]
  local seq=ck[3]
  local f=ck[4]
  local l=ck[5]
  if (l-f)==1 and seq[f+1][char] then
   local ok=true
   local c=n
   for i=l+1,#seq do
    c=getnext(c)
    if not c or not seq[i][ischar(c)] then
     ok=false
     break
    end
   end
   if ok then
    c=getprev(n)
    for i=1,f-1 do
     c=getprev(c)
     if not c or not seq[f-i][ischar(c)] then
      ok=false
     end
    end
   end
   if ok then
    return true
   end
  end
 end
 return false
end
local function order_matras(c)
 local cn=getnext(c)
 local char=getchar(cn)
 while dependent_vowel[char] do
  local next=getnext(cn)
  local cc=c
  local cchar=getchar(cc)
  while cc~=cn do
   if (above_mark[char] and (below_mark[cchar] or post_mark[cchar])) or (below_mark[char] and (post_mark[cchar])) then
    local prev,next=getboth(cn)
    if next then
     setprev(next,prev)
    end
    setnext(prev,next)
    setnext(getprev(cc),cn)
    setprev(cn,getprev(cc))
    setnext(cn,cc)
    setprev(cc,cn)
    break
   end
   cc=getnext(cc)
   cchar=getchar(cc)
  end
  cn=next
  char=getchar(cn)
 end
end
local function reorder_one(head,start,stop,font,attr,nbspaces)
 local reph,vattu,blwfcache,vatucache,pstfcache=initialize_one(font,attr) 
 local devanagari=fontdata[font].resources.devanagari
 local current=start
 local n=getnext(start)
 local base=nil
 local firstcons=nil
 local lastcons=nil
 local basefound=false
 if reph and ra[getchar(start)] and halant[getchar(n)] then
  if n==stop then
   return head,stop,nbspaces
  end
  if getchar(getnext(n))==c_zwj then
   current=start
  else
   current=getnext(n)
   setstate(start,s_rphf)
  end
 end
 if getchar(current)==c_nbsp then
  if current==stop then
   stop=getprev(stop)
   head=remove_node(head,current)
   flush_node(current)
   return head,stop,nbspaces
  else
   nbspaces=nbspaces+1
   base=current
   firstcons=current
   lastcons=current
   current=getnext(current)
   if current~=stop then
    local char=getchar(current)
    if nukta[char] then
     current=getnext(current)
     char=getchar(current)
    end
    if char==c_zwj and current~=stop then
     local next=getnext(current)
     if next~=stop and halant[getchar(next)] then
      current=next
      next=getnext(current)
      local tmp=next and getnext(next) or nil 
      local changestop=next==stop
      local tempcurrent=copy_node(next)
      copyinjection(tempcurrent,next)
      local nextcurrent=copy_node(current)
      copyinjection(nextcurrent,current) 
      setlink(tempcurrent,nextcurrent)
      setstate(tempcurrent,s_blwf)
      tempcurrent=processcharacters(tempcurrent,font)
      setstate(tempcurrent,unsetvalue)
      if getchar(next)==getchar(tempcurrent) then
       flush_list(tempcurrent)
       if show_syntax_errors then
        head,current=inject_syntax_error(head,current,char)
       end
      else
       setchar(current,getchar(tempcurrent)) 
       local freenode=getnext(current)
       setlink(current,tmp)
       flush_node(freenode)
       flush_list(tempcurrent)
       if changestop then
        stop=current
       end
      end
     end
    end
   end
  end
 end
 while not basefound do
  local char=getchar(current)
  if consonant[char] then
   setstate(current,s_half)
   if not firstcons then
    firstcons=current
   end
   lastcons=current
   if not base then
    base=current
   elseif blwfcache[char] then
    setstate(current,s_blwf)
   elseif pstfcache[char] then
    setstate(current,s_pstf)
   else
    base=current
   end
  end
  basefound=current==stop
  current=getnext(current)
 end
 if base~=lastcons then
  local np=base
  local n=getnext(base)
  local ch=getchar(n)
  if nukta[ch] then
   np=n
   n=getnext(n)
   ch=getchar(n)
  end
  if halant[ch] then
   if lastcons~=stop then
    local ln=getnext(lastcons)
    if nukta[getchar(ln)] then
     lastcons=ln
    end
   end
   local nn=getnext(n)
   local ln=getnext(lastcons) 
   setlink(np,nn)
   setnext(lastcons,n)
   if ln then
    setprev(ln,n)
   end
   setnext(n,ln)
   setprev(n,lastcons)
   if lastcons==stop then
    stop=n
   end
  end
 end
 n=getnext(start)
 if n~=stop and ra[getchar(start)] and halant[getchar(n)] and not zw_char[getchar(getnext(n))] then
  local matra=base
  if base~=stop then
   local next=getnext(base)
   if dependent_vowel[getchar(next)] then
    matra=next
   end
  end
  local sp=getprev(start)
  local nn=getnext(n)
  local mn=getnext(matra)
  setlink(sp,nn)
  setlink(matra,start)
  setlink(n,mn)
  if head==start then
   head=nn
  end
  start=nn
  if matra==stop then
   stop=n
  end
 end
 local current=start
 while current~=stop do
  local next=getnext(current)
  if next~=stop and halant[getchar(next)] and getchar(getnext(next))==c_zwnj then
   setstate(current,unsetvalue)
  end
  current=next
 end
 if base~=stop and getstate(base) then 
  local next=getnext(base)
  if halant[getchar(next)] and not (next~=stop and getchar(getnext(next))==c_zwj) then
   setstate(base,unsetvalue)
  end
 end
 local current,allreordered,moved=start,false,{ [base]=true }
 local a,b,p,bn=base,base,base,getnext(base)
 if base~=stop and nukta[getchar(bn)] then
  a,b,p=bn,bn,bn
 end
 while not allreordered do
  local c=current
  local n=getnext(current)
  local l=nil 
  if c~=stop then
   local ch=getchar(n)
   if nukta[ch] then
    c=n
    n=getnext(n)
    ch=getchar(n)
   end
   if c~=stop then
    if halant[ch] then
     c=n
     n=getnext(n)
     ch=getchar(n)
    end
    local tpm=twopart_mark[ch]
    while tpm do
     local extra=copy_node(n)
     copyinjection(extra,n)
     ch=tpm[1]
     setchar(n,ch)
     setchar(extra,tpm[2])
     head=insert_node_after(head,current,extra)
     tpm=twopart_mark[ch]
    end
    while c~=stop and dependent_vowel[ch] do
     c=n
     n=getnext(n)
     ch=getchar(n)
    end
    if c~=stop then
     if vowel_modifier[ch] then
      c=n
      n=getnext(n)
      ch=getchar(n)
     end
     if c~=stop and stress_tone_mark[ch] then
      c=n
      n=getnext(n)
     end
    end
   end
  end
  local bp=getprev(firstcons)
  local cn=getnext(current)
  local last=getnext(c)
  while cn~=last do
   if pre_mark[getchar(cn)] then
    if devanagari.left_matra_before_base then
     local prev,next=getboth(cn)
     setlink(prev,next)
     if cn==stop then
      stop=getprev(cn)
     end
     if base==start then
        if head==start then
         head=cn
        end
        start=cn
     end
     setlink(getprev(base),cn)
     setlink(cn,base)
     cn=next
    else
     if bp then
      setnext(bp,cn)
     end
     local prev,next=getboth(cn)
     if next then
      setprev(next,prev)
     end
     setnext(prev,next)
     if cn==stop then
      stop=prev
     end
     setprev(cn,bp)
     setlink(cn,firstcons)
     if firstcons==start then
      if head==start then
       head=cn
      end
      start=cn
     end
     cn=next
    end
   elseif current~=base and dependent_vowel[getchar(cn)] then
    local prev,next=getboth(cn)
    if next then
     setprev(next,prev)
    end
    setnext(prev,next)
    if cn==stop then
     stop=prev
    end
    setlink(b,cn,getnext(b))
    order_matras(cn)
    cn=next
   elseif current==base and dependent_vowel[getchar(cn)] then
    local cnn=getnext(cn)
    order_matras(cn)
    cn=cnn
    while cn~=last and dependent_vowel[getchar(cn)] do
     cn=getnext(cn)
    end
   else
    cn=getnext(cn)
   end
  end
  allreordered=c==stop
  current=getnext(c)
 end
 if reph or vattu then
  local current,cns=start,nil
  while current~=stop do
   local c=current
   local n=getnext(current)
   if ra[getchar(current)] and halant[getchar(n)] then
    c=n
    n=getnext(n)
    local b,bn=base,base
    while bn~=stop  do
     local next=getnext(bn)
     if dependent_vowel[getchar(next)] then
      b=next
     end
     bn=next
    end
    if getstate(current,s_rphf) then
     if b~=current then
      if current==start then
       if head==start then
        head=n
       end
       start=n
      end
      if b==stop then
       stop=c
      end
      local prev=getprev(current)
      setlink(prev,n)
      local next=getnext(b)
      setlink(c,next)
      setlink(b,current)
     end
    elseif cns and getnext(cns)~=current then
     local cp=getprev(current)
     local cnsn=getnext(cns)
     setlink(cp,n)
     setlink(cns,current) 
     setlink(c,cnsn)
     if c==stop then
      stop=cp
      break
     end
     current=getprev(n)
    end
   else
    local char=getchar(current)
    if consonant[char] then
     cns=current
     local next=getnext(cns)
     if halant[getchar(next)] then
      cns=next
     end
     if not vatucache[char] then
      next=getnext(cns)
      while dependent_vowel[getchar(next)] do
       cns=next
       next=getnext(cns)
      end
     end
    elseif char==c_nbsp then
     nbspaces=nbspaces+1
     cns=current
     local next=getnext(cns)
     if halant[getchar(next)] then
      cns=next
     end
     if not vatucache[char] then
      next=getnext(cns)
      while dependent_vowel[getchar(next)] do
       cns=next
       next=getnext(cns)
      end
     end
    end
   end
   current=getnext(current)
  end
 end
 if getchar(base)==c_nbsp then
  nbspaces=nbspaces-1
  if base==stop then
  	stop=getprev(stop)
  end
  head=remove_node(head,base)
  flush_node(base)
 end
 return head,stop,nbspaces
end
function handlers.devanagari_reorder_matras(head,start) 
 local current=start 
 local startfont=getfont(start)
 local startattr=getprop(start,a_syllabe)
 while current do
  local char=ischar(current,startfont)
  local next=getnext(current)
  if char and getprop(current,a_syllabe)==startattr then
   if halant[char] then 
    if next then
     local char=ischar(next,startfont)
     if char and zw_char[char] and getprop(next,a_syllabe)==startattr then
      current=next
      next=getnext(current)
     end
    end
    local startnext=getnext(start)
    head=remove_node(head,start)
    setlink(start,next)
    setlink(current,start)
    start=startnext
    break
   end
  else
   break
  end
  current=next
 end
 return head,start,true
end
local rephbase={}
function handlers.devanagari_reorder_reph(head,start)
 local current=getnext(start)
 local startnext=nil
 local startprev=nil
 local startfont=getfont(start)
 local startattr=getprop(start,a_syllabe)
 ::step_1::
 local char=ischar(start,startfont)
 local rephbase=rephbase[startfont][char]
 if char and after_subscript[rephbase] then
  goto step_5
 end
 ::step_2::
 if char and not after_postscript[rephbase] then
  while current do
   local char=ischar(current,startfont)
   if char and getprop(current,a_syllabe)==startattr then
    if halant[char] then
     local next=getnext(current)
     if next then
      local nextchar=ischar(next,startfont)
      if nextchar and zw_char[nextchar] and getprop(next,a_syllabe)==startattr then
       current=next
       next=getnext(current)
      end
     end
     startnext=getnext(start)
     head=remove_node(head,start)
     setlink(start,next)
     setlink(current,start)
     start=startnext
     startattr=getprop(start,a_syllabe)
     break
    end
    current=getnext(current)
   else
    break
   end
  end
 end
 ::step_3::
 if not startnext then
  if char and after_main[rephbase] then
   current=getnext(start)
   while current do
    local char=ischar(current,startfont)
    if char and getprop(current,a_syllabe)==startattr then
     if consonant[char] and not getstate(current,s_pref) then
      startnext=getnext(start)
      head=remove_node(head,start)
      setlink(current,start)
      setlink(start,getnext(current))
      start=startnext
      startattr=getprop(start,a_syllabe)
      break
     end
     current=getnext(current)
    else
     break
    end
   end
  end
 end
 ::step_4::
 if not startnext then
  if char and before_postscript[rephbase] then
   current=getnext(start)
   local c=nil
   while current do
    local char=ischar(current,startfont)
    if char and getprop(current,a_syllabe)==startattr then
     if getstate(current,s_pstf) then 
      startnext=getnext(start)
      head=remove_node(head,start)
      setlink(getprev(current),start)
      setlink(start,current)
      start=startnext
      startattr=getprop(start,a_syllabe)
      break
     elseif not c and (vowel_modifier[char] or stress_tone_mark[char] ) then
      c=current
     end
     current=getnext(current)
    else
     if c then
      startnext=getnext(start)
      head=remove_node(head,start)
      setlink(getprev(c),start)
      setlink(start,c)
      start=startnext
      startattr=getprop(start,a_syllabe)
     end
     break
    end
   end
  end
 end
 ::step_5::
 if not startnext then
  current=getnext(start)
  local c=nil
  while current do
   local char=ischar(current,startfont)
   if char and getprop(current,a_syllabe)==startattr then
    local state=getstate(current)
    if before_subscript[rephbase] and (state==s_blwf or state==s_pstf) then
     c=current
    elseif after_subscript[rephbase] and (state==s_pstf) then
     c=current
    end
    current=getnext(current)
   else
    break
   end
  end
  if c then
   startnext=getnext(start)
   head=remove_node(head,start)
   setlink(getprev(c),start)
   setlink(start,c)
   start=startnext
   startattr=getprop(start,a_syllabe)
  end
 end
 ::step_6::
 if not startnext then
  current=start
  local next=getnext(current)
  while next do
   local nextchar=ischar(next,startfont)
   if nextchar and getprop(next,a_syllabe)==startattr then
    current=next
    next=getnext(current)
   else
    break
   end
  end
  if start~=current then
   startnext=getnext(start)
   head=remove_node(head,start)
   setlink(start,getnext(current))
   setlink(current,start)
   start=startnext
  end
 end
 return head,start,true
end
local reordered_pre_base_reordering_consonants={} 
function handlers.devanagari_reorder_pre_base_reordering_consonants(head,start)
 if reordered_pre_base_reordering_consonants[start] then
  return head,start,true
 end
 local current=start 
 local startfont=getfont(start)
 local startattr=getprop(start,a_syllabe)
 while current do
  local char=ischar(current,startfont)
  local next=getnext(current)
  if char and getprop(current,a_syllabe)==startattr then
   if halant[char] then 
    if next then
     local char=ischar(next,startfont)
     if char and zw_char[char] and getprop(next,a_syllabe)==startattr then
      current=next
      next=getnext(current)
     end
    end
    local startnext=getnext(start)
    head=remove_node(head,start)
    setlink(start,next)
    setlink(current,start)
    reordered_pre_base_reordering_consonants[start]=true
    start=startnext
    return head,start,true
   end
  else
   break
  end
  current=next
 end
 local startattr=getprop(start,a_syllabe)
 local current=getprev(start)
 while current and getprop(current,a_syllabe)==startattr do
  local char=ischar(current)
  if (not dependent_vowel[char] and (not getstate(current) or getstate(current,s_init))) then
   startnext=getnext(start)
   head=remove_node(head,start)
   if current==head then
    setlink(start,current)
    head=start
   else
    setlink(getprev(current),start)
    setlink(start,current)
   end
   reordered_pre_base_reordering_consonants[start]=true
   start=startnext
   break
  end
  current=getprev(current)
 end
 return head,start,true
end
function handlers.devanagari_remove_joiners(head,start,kind,lookupname,replacement)
 local stop=getnext(start)
 local font=getfont(start)
 local last=start
 while stop do
  local char=ischar(stop,font)
  if char and (char==c_zwnj or char==c_zwj) then
   last=stop
   stop=getnext(stop)
  else
   break
  end
 end
 local prev=getprev(start)
 if stop then
  setnext(last)
  setlink(prev,stop)
 elseif prev then
  setnext(prev)
 end
 if head==start then
  head=stop
 end
 flush_list(start)
 return head,stop,true
end
local function initialize_two(font,attr)
 local devanagari=fontdata[font].resources.devanagari
 if devanagari then
  return devanagari.seqsubset or {},devanagari.reorderreph or {}
 else
  return {},{}
 end
end
local function reorder_two(head,start,stop,font,attr,nbspaces) 
 local seqsubset,reorderreph=initialize_two(font,attr)
 local halfpos=nil
 local basepos=nil
 local subpos=nil
 local postpos=nil
 reorderreph.coverage={}
 rephbase[font]={}
 for i=1,#seqsubset do
  local subset=seqsubset[i]
  local kind=subset[1]
  local lookupcache=subset[2]
  if kind=="rphf" then
   reorderreph.coverage[subset[3]]=true 
   rephbase[font][subset[3]]=subset[4]
   local current=start
   local last=getnext(stop)
   while current~=last do
    if current~=stop then
     local c=getchar(current)
     local found=lookupcache[c]
     if found then
      local next=getnext(current)
      if found[getchar(next)] or contextchain(found,next) then 
       local afternext=next~=stop and getnext(next)
       if afternext and zw_char[getchar(afternext)] then 
        current=afternext 
       elseif current==start then
        setstate(current,s_rphf)
        current=next
       else
        current=next
       end
      end
     end
    end
    current=getnext(current)
   end
  elseif kind=="pref" then
   local current=start
   local last=getnext(stop)
   while current~=last do
    if current~=stop then
     local c=getchar(current)
     local found=lookupcache[c]
     if found then 
      local next=getnext(current)
      if found[getchar(next)] or contextchain(found,next) then
       if (not getstate(current) and not getstate(next)) then	
        setstate(current,s_pref)
        setstate(next,s_pref)
        current=next
       end
      end
     end
    end
    current=getnext(current)
   end
  elseif kind=="half" then 
   local current=start
   local last=getnext(stop)
   while current~=last do
    if current~=stop then
     local c=getchar(current)
     local found=lookupcache[c]
     if found then
      local next=getnext(current)
      if found[getchar(next)] or contextchain(found,next) then
       if next~=stop and getchar(getnext(next))==c_zwnj then 
        current=next
       elseif (not getstate(current)) then	
        setstate(current,s_half)
        if not halfpos then
         halfpos=current
        end
       end
       current=getnext(current)
      end
     end
    end
    current=getnext(current)
   end
  elseif kind=="blwf" or kind=="vatu" then 
   local current=start
   local last=getnext(stop)
   while current~=last do
    if current~=stop then
     local c=getchar(current)
     local found=lookupcache[c]
     if found then
      local next=getnext(current)
      if found[getchar(next)] or contextchain(found,next) then
       if (not getstate(current) and not getstate(next)) then 
        setstate(current,s_blwf)
        setstate(next,s_blwf)
        current=next
        subpos=current
       end
      end
     end
    end
    current=getnext(current)
   end
  elseif kind=="pstf" then 
   local current=start
   local last=getnext(stop)
   while current~=last do
    if current~=stop then
     local c=getchar(current)
     local found=lookupcache[c]
     if found then
      local next=getnext(current)
      if found[getchar(next)] or contextchain(found,next) then
       if (not getstate(current) and not getstate(next)) then 
        setstate(current,s_pstf)
        setstate(next,s_pstf)
        current=next
        postpos=current
       end
      end
     end
    end
    current=getnext(current)
   end
  end
 end
 local current,base,firstcons=start,nil,nil
 if getstate(start,s_rphf) then
  current=getnext(getnext(start))
 end
 if current~=getnext(stop) and getchar(current)==c_nbsp then
  if current==stop then
   stop=getprev(stop)
   head=remove_node(head,current)
   flush_node(current)
   return head,stop,nbspaces
  else
   nbspaces=nbspaces+1
   base=current
   current=getnext(current)
   if current~=stop then
    local char=getchar(current)
    if nukta[char] then
     current=getnext(current)
     char=getchar(current)
    end
    if char==c_zwj then
     local next=getnext(current)
     if current~=stop and next~=stop and halant[getchar(next)] then
      current=next
      next=getnext(current)
      local tmp=getnext(next)
      local changestop=next==stop
      setnext(next)
      setstate(current,s_pref)
      current=processcharacters(current,font)
      setstate(current,s_blwf)
      current=processcharacters(current,font)
      setstate(current,s_pstf)
      current=processcharacters(current,font)
      setstate(current,unsetvalue)
      if halant[getchar(current)] then
       setnext(getnext(current),tmp)
       if show_syntax_errors then
        head,current=inject_syntax_error(head,current,char)
       end
      else
       setnext(current,tmp) 
       if changestop then
        stop=current
       end
      end
     end
    end
   end
  end
 else 
  local last=getnext(stop)
  while current~=last do 
   local next=getnext(current)
   if consonant[getchar(current)] then
    if not (current~=stop and next~=stop and halant[getchar(next)] and getchar(getnext(next))==c_zwj) then
     if not firstcons then
      firstcons=current
     end
     local a=getstate(current)
     if not (a==s_blwf or a==s_pstf or (a~=s_rphf and a~=s_blwf and ra[getchar(current)])) then
      base=current
     end
    end
   end
   current=next
  end
  if not base then
   base=firstcons
  end
 end
 if not base then
  if getstate(start,s_rphf) then
   setstate(start,unsetvalue)
  end
  return head,stop,nbspaces
 else
  if getstate(base) then 
   setstate(base,unsetvalue)
  end
  basepos=base
 end
 if not halfpos then
  halfpos=base
 end
 if not subpos then
  subpos=base
 end
 if not postpos then
  postpos=subpos or base
 end
 local moved={}
 local current=start
 local last=getnext(stop)
 while current~=last do
  local char=getchar(current)
  local target=nil
  local cn=getnext(current)
  local tpm=twopart_mark[char]
  while tpm do
   local extra=copy_node(current)
   copyinjection(extra,current)
   char=tpm[1]
   setchar(current,char)
   setchar(extra,tpm[2])
   head=insert_node_after(head,current,extra)
   tpm=twopart_mark[char]
  end
  if not moved[current] and dependent_vowel[char] then
   if pre_mark[char] then 
    moved[current]=true
    local prev,next=getboth(current)
    setlink(prev,next)
    if current==stop then
     stop=getprev(current)
    end
    local pos
    if before_main[char] then
     pos=basepos
    else
     pos=halfpos
    end
    local ppos=getprev(pos) 
    while ppos and getprop(ppos,a_syllabe)==getprop(pos,a_syllabe) do
     if getstate(ppos,s_pref) then
      pos=ppos
     end
     ppos=getprev(ppos)
    end
    local ppos=getprev(pos) 
    while ppos and getprop(ppos,a_syllabe)==getprop(pos,a_syllabe) and halant[ischar(ppos)] do
     ppos=getprev(ppos)
     if ppos and getprop(ppos,a_syllabe)==getprop(pos,a_syllabe) and consonant[ischar(ppos)] then
      pos=ppos
      ppos=getprev(ppos)
     else
      break
     end
    end
    if pos==start then
     if head==start then
      head=current
     end
     start=current
    end
    setlink(getprev(pos),current)
    setlink(current,pos)
   elseif above_mark[char] then
    target=basepos
    if subpos==basepos then
     subpos=current
    end
    if postpos==basepos then
     postpos=current
    end
    basepos=current
   elseif below_mark[char] then
    target=subpos
    if postpos==subpos then
     postpos=current
    end
    subpos=current
   elseif post_mark[char] then
    local n=getnext(postpos) 
    while n do
     local v=ischar(n,font)
     if nukta[v] or stress_tone_mark[v] or vowel_modifier[v] then
      postpos=n
     else
      break
     end
     n=getnext(n)
    end
    target=postpos
    postpos=current
   end
   if mark_above_below_post[char] then
    local prev=getprev(current)
    if prev~=target then
     local next=getnext(current)
     setlink(prev,next)
     if current==stop then
      stop=prev
     end
     setlink(current,getnext(target))
     setlink(target,current)
    end
   end
  end
  current=cn
 end
 local current=getnext(start)
 local last=getnext(stop)
 while current~=last do
  local char=getchar(current)
  local cn=getnext(current)
  if halant[char] and ra[ischar(cn)] and (not getstate(cn,s_rphf)) and (not getstate(cn,s_blwf)) then
   if after_main[ischar(cn)] then
    local prev=getprev(current)
    local next=getnext(cn)
    local bpn=getnext(basepos)
    while bpn and dependent_vowel[ischar(bpn)] do
     basepos=bpn
     bpn=getnext(bpn)
    end
    if basepos~=prev then
     setlink(prev,next)
     setlink(cn,getnext(basepos))
     setlink(basepos,current)
     if cn==stop then
      stop=prev
     end
     cn=next
    end
   end
  end
  current=cn
 end
 local current=start
 local c=nil
 while current~=stop do
  local char=getchar(current)
  if halant[char] or stress_tone_mark[char] then
   if not c then
    c=current
   end
  else
   c=nil
  end
  local next=getnext(current)
  if c and nukta[getchar(next)] then
   if head==c then
    head=next
   end
   if stop==next then
    stop=current
   end
   setlink(getprev(c),next)
   local nextnext=getnext(next)
   setnext(current,nextnext)
   local nextnextnext=getnext(nextnext)
   if nextnextnext then
    setprev(nextnextnext,current)
   end
   setlink(nextnext,c)
  end
  if stop==current then break end
  current=getnext(current)
 end
 if getchar(base)==c_nbsp then
  if base==stop then
   stop=getprev(stop)
  end
  nbspaces=nbspaces-1
  head=remove_node(head,base)
  flush_node(base)
 end
 return head,stop,nbspaces
end
local separator={}
imerge(separator,consonant)
imerge(separator,independent_vowel)
imerge(separator,dependent_vowel)
imerge(separator,vowel_modifier)
imerge(separator,stress_tone_mark)
for k,v in next,nukta  do separator[k]=true end
for k,v in next,halant do separator[k]=true end
local function analyze_next_chars_one(c,font,variant)
 local n=getnext(c)
 if not n then
  return c
 end
 if variant==1 then
  local v=ischar(n,font)
  if v and nukta[v] then
   n=getnext(n)
   if n then
    v=ischar(n,font)
   end
  end
  if n and v then
   local nn=getnext(n)
   if nn then
    local vv=ischar(nn,font)
    if vv then
     local nnn=getnext(nn)
     if nnn then
      local vvv=ischar(nnn,font)
      if vvv then
       if vv==c_zwj and consonant[vvv] then
        c=nnn
       elseif (vv==c_zwnj or vv==c_zwj) and halant[vvv] then
        local nnnn=getnext(nnn)
        if nnnn then
         local vvvv=ischar(nnnn,font)
         if vvvv and consonant[vvvv] then
          c=nnnn
         end
        end
       end
      end
     end
    end
   end
  end
 elseif variant==2 then
  local v=ischar(n,font)
  if v and nukta[v] then
   c=n
  end
  n=getnext(c)
  if n then
   v=ischar(n,font)
   if v then
    local nn=getnext(n)
    if nn then
     local vv=ischar(nn,font)
     if vv and zw_char[v] then
      n=nn
      v=vv
      nn=getnext(nn)
      vv=nn and ischar(nn,font)
     end
     if vv and halant[v] and consonant[vv] then
      c=nn
     end
    end
   end
  end
 end
 local n=getnext(c)
 if not n then
  return c
 end
 local v=ischar(n,font)
 if not v then
  return c
 end
 local already_pre_mark   
 local already_above_mark 
 local already_below_mark 
 local already_post_mark  
 while dependent_vowel[v] do
	 local vowels=twopart_mark[v] or { v }
	 for k,v in next,vowels do
			if pre_mark[v] and not already_pre_mark then
				already_pre_mark=true
			elseif above_mark[v] and not already_above_mark then
				already_above_mark=true
			elseif below_mark[v] and not already_below_mark then
				already_below_mark=true
			elseif post_mark[v] and not already_post_mark then
				already_post_mark=true
			else
				return c
			end
	 end
  c=getnext(c)
  n=getnext(c)
  if not n then
   return c
  end
  v=ischar(n,font)
  if not v then
   return c
  end
 end
 if nukta[v] then
  c=getnext(c)
  n=getnext(c)
  if not n then
   return c
  end
  v=ischar(n,font)
  if not v then
   return c
  end
 end
 if halant[v] then
  c=getnext(c)
  n=getnext(c)
  if not n then
   return c
  end
  v=ischar(n,font)
  if not v then
   return c
  end
 end
 if vowel_modifier[v] then
  c=getnext(c)
  n=getnext(c)
  if not n then
   return c
  end
  v=ischar(n,font)
  if not v then
   return c
  end
 end
 if stress_tone_mark[v] then
  c=getnext(c)
  n=getnext(c)
  if not n then
   return c
  end
  v=ischar(n,font)
  if not v then
   return c
  end
 end
 if stress_tone_mark[v] then
  return n
 else
  return c
 end
end
local function analyze_next_chars_two(c,font)
 local n=getnext(c)
 if not n then
  return c
 end
 local v=ischar(n,font)
 if v and nukta[v] then
  c=n
 end
 n=c
 while true do
  local nn=getnext(n)
  if nn then
   local vv=ischar(nn,font)
   if vv then
    if halant[vv] then
     n=nn
     local nnn=getnext(nn)
     if nnn then
      local vvv=ischar(nnn,font)
      if vvv and zw_char[vvv] then
       n=nnn
      end
     end
    elseif vv==c_zwnj or vv==c_zwj then
     local nnn=getnext(nn)
     if nnn then
      local vvv=ischar(nnn,font)
      if vvv and halant[vvv] then
       n=nnn
      end
     end
    else
     break
    end
    local nn=getnext(n)
    if nn then
     local vv=ischar(nn,font)
     if vv and consonant[vv] then
      n=nn
      local nnn=getnext(nn)
      if nnn then
       local vvv=ischar(nnn,font)
       if vvv and nukta[vvv] then
        n=nnn
       end
      end
      c=n
     else
      break
     end
    else
     break
    end
   else
    break
   end
  else
   break
  end
 end
 if not c then
  return
 end
 local n=getnext(c)
 if not n then
  return c
 end
 local v=ischar(n,font)
 if not v then
  return c
 end
 if anudatta[v] then
  c=n
  n=getnext(c)
  if not n then
   return c
  end
  v=ischar(n,font)
  if not v then
   return c
  end
 end
 if halant[v] then
  c=n
  n=getnext(c)
  if not n then
   return c
  end
  v=ischar(n,font)
  if not v then
   return c
  end
  if v==c_zwnj or v==c_zwj then
   c=n
   n=getnext(c)
   if not n then
    return c
   end
   v=ischar(n,font)
   if not v then
    return c
   end
  end
 else
  local already_pre_mark   
  local already_above_mark 
  local already_below_mark 
  local already_post_mark  
		while dependent_vowel[v] do
			local vowels=twopart_mark[v] or { v }
			for k,v in next,vowels do
				if pre_mark[v] and not already_pre_mark then
					already_pre_mark=true
				elseif above_mark[v] and not already_above_mark then
					already_above_mark=true
				elseif below_mark[v] and not already_below_mark then
					already_below_mark=true
				elseif post_mark[v] and not already_post_mark then
					already_post_mark=true
				else
					return c
				end
			end
   c=n
   n=getnext(c)
   if not n then
    return c
   end
   v=ischar(n,font)
   if not v then
    return c
   end
  end
  if nukta[v] then
   c=n
   n=getnext(c)
   if not n then
    return c
   end
   v=ischar(n,font)
   if not v then
    return c
   end
  end
  if halant[v] then
   c=n
   n=getnext(c)
   if not n then
    return c
   end
   v=ischar(n,font)
   if not v then
    return c
   end
  end
 end
 if vowel_modifier[v] then
  c=n
  n=getnext(c)
  if not n then
   return c
  end
  v=ischar(n,font)
  if not v then
   return c
  end
 end
 if stress_tone_mark[v] then
  c=n
  n=getnext(c)
  if not n then
   return c
  end
  v=ischar(n,font)
  if not v then
   return c
  end
 end
 if stress_tone_mark[v] then
  return n
 else
  return c
 end
end
local function method_one(head,font,attr)
 local current=head
 local start=true
 local done=false
 local nbspaces=0
 local syllabe=0
 while current do
  local char=ischar(current,font)
  if char then
   done=true
   local syllablestart=current
   local syllableend=nil
   local c=current
   local n=getnext(c)
   local first=char
   if n and ra[first] then
    local second=ischar(n,font)
    if second and halant[second] then
     local n=getnext(n)
     if n then
      local third=ischar(n,font)
      if third then
       c=n
       first=third
      end
     end
    end
   end
   local standalone=first==c_nbsp
   if standalone then
    local prev=getprev(current)
    if prev then
     local prevchar=ischar(prev,font)
     if not prevchar then
     elseif not separator[prevchar] then
     else
      standalone=false
     end
    else
    end
   end
   if standalone then
    local syllableend=analyze_next_chars_one(c,font,2)
    current=getnext(syllableend)
    if syllablestart~=syllableend then
     head,current,nbspaces=reorder_one(head,syllablestart,syllableend,font,attr,nbspaces)
     current=getnext(current)
    end
   else
    if consonant[char] then
     local prevc=true
     while prevc do
      prevc=false
      local n=getnext(current)
      if not n then
       break
      end
      local v=ischar(n,font)
      if not v then
       break
      end
      if nukta[v] then
       n=getnext(n)
       if not n then
        break
       end
       v=ischar(n,font)
       if not v then
        break
       end
      end
      if halant[v] then
       n=getnext(n)
       if not n then
        break
       end
       v=ischar(n,font)
       if not v then
        break
       end
       if v==c_zwnj or v==c_zwj then
        n=getnext(n)
        if not n then
         break
        end
        v=ischar(n,font)
        if not v then
         break
        end
       end
       if consonant[v] then
        prevc=true
        current=n
       end
      end
     end
     local n=getnext(current)
     if n then
      local v=ischar(n,font)
      if v and nukta[v] then
       current=n
       n=getnext(current)
      end
     end
     syllableend=current
     current=n
     if current then
      local v=ischar(current,font)
      if not v then
      elseif halant[v] then
       local n=getnext(current)
       if n then
        local v=ischar(n,font)
        if v and zw_char[v] then
         syllableend=n
         current=getnext(n)
        else
         syllableend=current
         current=n
        end
       else
        syllableend=current
        current=n
       end
      else
       if dependent_vowel[v] then
        syllableend=current
        current=getnext(current)
        v=ischar(current,font)
       end
       if v and vowel_modifier[v] then
        syllableend=current
        current=getnext(current)
        v=ischar(current,font)
       end
       if v and stress_tone_mark[v] then
        syllableend=current
        current=getnext(current)
       end
      end
     end
     if syllablestart~=syllableend then
      if syllableend then
       syllabe=syllabe+1
       local c=syllablestart
       local n=getnext(syllableend)
       while c~=n do
        setprop(c,a_syllabe,syllabe)
        c=getnext(c)
       end
      end
      head,current,nbspaces=reorder_one(head,syllablestart,syllableend,font,attr,nbspaces)
      current=getnext(current)
     end
    elseif independent_vowel[char] then
     syllableend=current
     current=getnext(current)
     if current then
      local v=ischar(current,font)
      if v then
       if vowel_modifier[v] then
        syllableend=current
        current=getnext(current)
        v=ischar(current,font)
       end
       if v and stress_tone_mark[v] then
        syllableend=current
        current=getnext(current)
       end
      end
     end
    else
     if show_syntax_errors then
      local mark=mark_four[char]
      if mark then
       head,current=inject_syntax_error(head,current,char)
      end
     end
     current=getnext(current)
    end
   end
  else
   current=getnext(current)
  end
  start=false
 end
 if nbspaces>0 then
  head=replace_all_nbsp(head)
 end
 current=head
 local n=0
 while current do
  local char=ischar(current,font)
  if char then
			if n==0 and not getstate(current) then
				setstate(current,s_init)
			end
			n=n+1
		else
			n=0
		end
		current=getnext(current)
	end
 return head,done
end
local function method_two(head,font,attr)
 local current=head
 local start=true
 local done=false
 local syllabe=0
 local nbspaces=0
 while current do
  local syllablestart=nil
  local syllableend=nil
  local char=ischar(current,font)
  if char then
   done=true
   syllablestart=current
   local c=current
   local n=getnext(current)
   if n and ra[char] then
    local nextchar=ischar(n,font)
    if nextchar and halant[nextchar] then
     local n=getnext(n)
     if n then
      local nextnextchar=ischar(n,font)
      if nextnextchar then
       c=n
       char=nextnextchar
      end
     end
    end
   end
   if independent_vowel[char] then
    current=analyze_next_chars_one(c,font,1)
    syllableend=current
   else
    local standalone=char==c_nbsp
    if standalone then
     nbspaces=nbspaces+1
     local p=getprev(current)
     if not p then
     elseif ischar(p,font) then
     elseif not separator[getchar(p)] then
     else
      standalone=false
     end
    end
    if standalone then
     current=analyze_next_chars_one(c,font,2)
     syllableend=current
    elseif consonant[getchar(current)] then
     current=analyze_next_chars_two(current,font) 
     syllableend=current
    end
   end
  end
  if syllableend then
   syllabe=syllabe+1
   local c=syllablestart
   local n=getnext(syllableend)
   while c~=n do
    setprop(c,a_syllabe,syllabe)
    c=getnext(c)
   end
  end
  if syllableend and syllablestart~=syllableend then
   head,current,nbspaces=reorder_two(head,syllablestart,syllableend,font,attr,nbspaces)
  end
  if not syllableend and show_syntax_errors then
   local char=ischar(current,font)
   if char and not getstate(current) then 
    local mark=mark_four[char]
    if mark then
     head,current=inject_syntax_error(head,current,char)
    end
   end
  end
  start=false
  current=getnext(current)
 end
 if nbspaces>0 then
  head=replace_all_nbsp(head)
 end
 current=head
 local n=0
 while current do
  local char=ischar(current,font)
  if char then
			if n==0 and not getstate(current) then 
				setstate(current,s_init)
			end
			n=n+1
		else
			n=0
		end
		current=getnext(current)
	end
 return head,done
end
for i=1,nofscripts do
 methods[scripts_one[i]]=method_one
 methods[scripts_two[i]]=method_two
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['font-ocl']={
 version=1.001,
 comment="companion to font-ini.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
if CONTEXTLMTXMODE and CONTEXTLMTXMODE>0 then
 return
end
local tostring,tonumber,next=tostring,tonumber,next
local round,max=math.round,math.round
local gsub,find=string.gsub,string.find
local sortedkeys,sortedhash,concat=table.sortedkeys,table.sortedhash,table.concat
local setmetatableindex=table.setmetatableindex
local formatters=string.formatters
local tounicode=fonts.mappings.tounicode
local helpers=fonts.helpers
local charcommand=helpers.commands.char
local rightcommand=helpers.commands.right
local leftcommand=helpers.commands.left
local downcommand=helpers.commands.down
local otf=fonts.handlers.otf
local otfregister=otf.features.register
local f_color=formatters["%.3f %.3f %.3f rg"]
local f_gray=formatters["%.3f g"]
if context then

--removed

else
 local tounicode=fonts.mappings.tounicode16
 function otf.getactualtext(s)
  return
   "/Span << /ActualText <feff"..s.."> >> BDC",
   "EMC"
 end
end
local sharedpalettes={}
local hash=setmetatableindex(function(t,k)
 local v={ "pdf","direct",k }
 t[k]=v
 return v
end)
if context then

--removed

else 
 function otf.registerpalette(name,values)
  sharedpalettes[name]=values
  for i=1,#values do
   local v=values[i]
   if v then
    values[i]=hash[f_color(
     max(round((v.r or 0)*255),255)/255,
     max(round((v.g or 0)*255),255)/255,
     max(round((v.b or 0)*255),255)/255
    )]
   end
  end
 end
end
local function convert(t,k)
 local v={}
 for i=1,#k do
  local p=k[i]
  local r,g,b=p[1],p[2],p[3]
  if r==g and g==b then
   v[i]=hash[f_gray(r/255)]
  else
   v[i]=hash[f_color(r/255,g/255,b/255)]
  end
 end
 t[k]=v
 return v
end
local start={ "pdf","mode","font" }
local push={ "pdf","page","q" }
local pop={ "pdf","page","Q" }
local function initializeoverlay(tfmdata,kind,value)
 if value then
  local resources=tfmdata.resources
  local palettes=resources.colorpalettes
  if palettes then
   local converted=resources.converted
   if not converted then
    converted=setmetatableindex(convert)
    resources.converted=converted
   end
   local colorvalues=sharedpalettes[value]
   local default=false 
   if colorvalues then
    default=colorvalues[#colorvalues]
   else
    colorvalues=converted[palettes[tonumber(value) or 1] or palettes[1]] or {}
   end
   local classes=#colorvalues
   if classes==0 then
    return
   end
   local characters=tfmdata.characters
   local descriptions=tfmdata.descriptions
   local properties=tfmdata.properties
   properties.virtualized=true
   tfmdata.fonts={
    { id=0 }
   }
   local getactualtext=otf.getactualtext
   local b,e=getactualtext(tounicode(0xFFFD))
   local actualb={ "pdf","page",b } 
   local actuale={ "pdf","page",e }
   for unicode,character in next,characters do
    local description=descriptions[unicode]
    if description then
     local colorlist=description.colors
     if colorlist then
      local u=description.unicode or characters[unicode].unicode
      local w=character.width or 0
      local s=#colorlist
      local goback=w~=0 and leftcommand[w] or nil 
      local t={
       start,
       not u and actualb or { "pdf","page",(getactualtext(tounicode(u))) },
       push,
      }
      local n=3
      local l=nil
      for i=1,s do
       local entry=colorlist[i]
       local v=colorvalues[entry.class] or default
       if v and l~=v then
        n=n+1 t[n]=v
        l=v
       end
       n=n+1 t[n]=charcommand[entry.slot]
       if s>1 and i<s and goback then
        n=n+1 t[n]=goback
       end
      end
      n=n+1 t[n]=pop
      n=n+1 t[n]=actuale
      character.commands=t
     end
    end
   end
   return true
  end
 end
end
otfregister {
 name="colr",
 description="color glyphs",
 manipulators={
  base=initializeoverlay,
  node=initializeoverlay,
 }
}
do
 local nofstreams=0
 local f_name=formatters[ [[pdf-glyph-%05i]] ]
 local f_used=context and formatters[ [[original:///%s]] ] or formatters[ [[%s]] ]
 local hashed={}
 local cache={}
 local openpdf=pdfe.new
 function otf.storepdfdata(pdf)
  local done=hashed[pdf]
  if not done then
   nofstreams=nofstreams+1
   local f=f_name(nofstreams)
   local n=openpdf(pdf,#pdf,f)
   done=f_used(n)
   hashed[pdf]=done
  end
  return done
 end
end
local function pdftovirtual(tfmdata,pdfshapes,kind) 
 if not tfmdata or not pdfshapes or not kind then
  return
 end
 local characters=tfmdata.characters
 local properties=tfmdata.properties
 local parameters=tfmdata.parameters
 local hfactor=parameters.hfactor
 properties.virtualized=true
 tfmdata.fonts={
  { id=0 } 
 }
 local getactualtext=otf.getactualtext
 local storepdfdata=otf.storepdfdata
 local b,e=getactualtext(tounicode(0xFFFD))
 local actualb={ "pdf","page",b } 
 local actuale={ "pdf","page",e }
 local vfimage=lpdf and lpdf.vfimage or function(wd,ht,dp,data,name)
  local name=storepdfdata(data)
  return { "image",{ filename=name,width=wd,height=ht,depth=dp } }
 end
 for unicode,character in sortedhash(characters) do  
  local index=character.index
  if index then
   local pdf=pdfshapes[index]
   local typ=type(pdf)
   local data=nil
   local dx=nil
   local dy=nil
   local scale=1
   if typ=="table" then
    data=pdf.data
    dx=pdf.x or pdf.dx or 0
    dy=pdf.y or pdf.dy or 0
    scale=pdf.scale or 1
   elseif typ=="string" then
    data=pdf
    dx=0
    dy=0
   elseif typ=="number" then
    data=pdf
    dx=0
    dy=0
   end
   if data then
    local bt=unicode and getactualtext(unicode)
    local wd=character.width  or 0
    local ht=character.height or 0
    local dp=character.depth  or 0
    character.commands={
     not unicode and actualb or { "pdf","page",(getactualtext(unicode)) },
     downcommand [dp+dy*hfactor],
     rightcommand[  dx*hfactor],
     vfimage(scale*wd,ht,dp,data,pdfshapes.filename or ""),
     actuale,
    }
    character[kind]=true
   end
  end
 end
end
local otfsvg=otf.svg or {}
otf.svg=otfsvg
otf.svgenabled=true
do
 local report_svg=logs.reporter("fonts","svg conversion")
 local loaddata=io.loaddata
 local savedata=io.savedata
 local remove=os.remove
 if context and xml.convert then
  local xmlconvert=xml.convert
  local xmlfirst=xml.first
  function otfsvg.filterglyph(entry,index)
   local svg=xmlconvert(entry.data)
   local root=svg and xmlfirst(svg,"/svg[@id='glyph"..index.."']")
   local data=root and tostring(root)
   return data
  end
 else
  function otfsvg.filterglyph(entry,index) 
   return entry.data
  end
 end
 local runner=sandbox and sandbox.registerrunner {
  name="otfsvg",
  program="inkscape",
  method="pipeto",
  template="--export-area-drawing --shell > temp-otf-svg-shape.log",
  reporter=report_svg,
 }
 if not runner then
  runner=function()
   return io.popen("inkscape --export-area-drawing --shell > temp-otf-svg-shape.log","w")
  end
 end
 function otfsvg.topdf(svgshapes,tfmdata)
  local pdfshapes={}
  local inkscape=runner()
  if inkscape then
   local descriptions=tfmdata.descriptions
   local nofshapes=#svgshapes
   local f_svgfile=formatters["temp-otf-svg-shape-%i.svg"]
   local f_pdffile=formatters["temp-otf-svg-shape-%i.pdf"]
   local f_convert=formatters["%s --export-pdf=%s\n"]
   local filterglyph=otfsvg.filterglyph
   local nofdone=0
   local processed={}
   report_svg("processing %i svg containers",nofshapes)
   statistics.starttiming()
   for i=1,nofshapes do
    local entry=svgshapes[i]
    for index=entry.first,entry.last do
     local data=filterglyph(entry,index)
     if data and data~="" then
      local svgfile=f_svgfile(index)
      local pdffile=f_pdffile(index)
      savedata(svgfile,data)
      inkscape:write(f_convert(svgfile,pdffile))
      processed[index]=true
      nofdone=nofdone+1
      if nofdone%25==0 then
       report_svg("%i shapes submitted",nofdone)
      end
     end
    end
   end
   if nofdone%25~=0 then
    report_svg("%i shapes submitted",nofdone)
   end
   report_svg("processing can be going on for a while")
   inkscape:write("quit\n")
   inkscape:close()
   report_svg("processing %i pdf results",nofshapes)
   for index in next,processed do
    local svgfile=f_svgfile(index)
    local pdffile=f_pdffile(index)
    local pdfdata=loaddata(pdffile)
    if pdfdata and pdfdata~="" then
     pdfshapes[index]={
      data=pdfdata,
     }
    end
    remove(svgfile)
    remove(pdffile)
   end
   local characters=tfmdata.characters
   for k,v in next,characters do
    local d=descriptions[k]
    local i=d.index
    if i then
     local p=pdfshapes[i]
     if p then
      local w=d.width
      local l=d.boundingbox[1]
      local r=d.boundingbox[3]
      p.scale=(r-l)/w
      p.x=l
     end
    end
   end
   if not next(pdfshapes) then
    report_svg("there are no converted shapes, fix your setup")
   end
   statistics.stoptiming()
   if statistics.elapsedseconds then
    report_svg("svg conversion time %s",statistics.elapsedseconds() or "-")
   end
  end
  return pdfshapes
 end
end
local function initializesvg(tfmdata,kind,value) 
 if value and otf.svgenabled then
  local svg=tfmdata.properties.svg
  local hash=svg and svg.hash
  local timestamp=svg and svg.timestamp
  if not hash then
   return
  end
  local pdffile=containers.read(otf.pdfcache,hash)
  local pdfshapes=pdffile and pdffile.pdfshapes
  if not pdfshapes or pdffile.timestamp~=timestamp or not next(pdfshapes) then
   local svgfile=containers.read(otf.svgcache,hash)
   local svgshapes=svgfile and svgfile.svgshapes
   pdfshapes=svgshapes and otfsvg.topdf(svgshapes,tfmdata,otf.pdfcache.writable,hash) or {}
   containers.write(otf.pdfcache,hash,{
    pdfshapes=pdfshapes,
    timestamp=timestamp,
   })
  end
  pdftovirtual(tfmdata,pdfshapes,"svg")
  return true
 end
end
otfregister {
 name="svg",
 description="svg glyphs",
 manipulators={
  base=initializesvg,
  node=initializesvg,
 }
}
local otfpng=otf.png or {}
otf.png=otfpng
otf.pngenabled=true
do
 local report_png=logs.reporter("fonts","png conversion")
 local loaddata=io.loaddata
 local savedata=io.savedata
 local remove=os.remove
 local runner=sandbox and sandbox.registerrunner {
  name="otfpng",
  program="gm",
  template="convert -quality 100 temp-otf-png-shape.png temp-otf-png-shape.pdf > temp-otf-svg-shape.log",
 }
 if not runner then
  runner=function()
   return os.execute("gm convert -quality 100 temp-otf-png-shape.png temp-otf-png-shape.pdf > temp-otf-svg-shape.log")
  end
 end
 function otfpng.topdf(pngshapes)
  local pdfshapes={}
  local pngfile="temp-otf-png-shape.png"
  local pdffile="temp-otf-png-shape.pdf"
  local nofdone=0
  local indices=sortedkeys(pngshapes) 
  local nofindices=#indices
  report_png("processing %i png containers",nofindices)
  statistics.starttiming()
  for i=1,nofindices do
   local index=indices[i]
   local entry=pngshapes[index]
   local data=entry.data 
   local x=entry.x
   local y=entry.y
   savedata(pngfile,data)
   runner()
   pdfshapes[index]={
    x=x~=0 and x or nil,
    y=y~=0 and y or nil,
    data=loaddata(pdffile),
   }
   nofdone=nofdone+1
   if nofdone%100==0 then
    report_png("%i shapes processed",nofdone)
   end
  end
  report_png("processing %i pdf results",nofindices)
  remove(pngfile)
  remove(pdffile)
  statistics.stoptiming()
  if statistics.elapsedseconds then
   report_png("png conversion time %s",statistics.elapsedseconds() or "-")
  end
  return pdfshapes
 end
end
local function initializepng(tfmdata,kind,value) 
 if value and otf.pngenabled then
  local png=tfmdata.properties.png
  local hash=png and png.hash
  local timestamp=png and png.timestamp
  if not hash then
   return
  end
  local pdffile=containers.read(otf.pdfcache,hash)
  local pdfshapes=pdffile and pdffile.pdfshapes
  if not pdfshapes or pdffile.timestamp~=timestamp then
   local pngfile=containers.read(otf.pngcache,hash)
   local pngshapes=pngfile and pngfile.pngshapes
   pdfshapes=pngshapes and otfpng.topdf(pngshapes) or {}
   containers.write(otf.pdfcache,hash,{
    pdfshapes=pdfshapes,
    timestamp=timestamp,
   })
  end
  pdftovirtual(tfmdata,pdfshapes,"png")
  return true
 end
end
otfregister {
 name="sbix",
 description="sbix glyphs",
 manipulators={
  base=initializepng,
  node=initializepng,
 }
}
otfregister {
 name="cblc",
 description="cblc glyphs",
 manipulators={
  base=initializepng,
  node=initializepng,
 }
}
if context then

--removed

end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['font-otc']={
 version=1.001,
 comment="companion to font-ini.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
local insert,sortedkeys,sortedhash,tohash=table.insert,table.sortedkeys,table.sortedhash,table.tohash
local type,next,tonumber=type,next,tonumber
local lpegmatch=lpeg.match
local utfbyte,utflen=utf.byte,utf.len
local sortedhash=table.sortedhash
local trace_loading=false  trackers.register("otf.loading",function(v) trace_loading=v end)
local report_otf=logs.reporter("fonts","otf loading")
local fonts=fonts
local otf=fonts.handlers.otf
local registerotffeature=otf.features.register
local setmetatableindex=table.setmetatableindex
local fonthelpers=fonts.helpers
local checkmerge=fonthelpers.checkmerge
local checkflags=fonthelpers.checkflags
local checksteps=fonthelpers.checksteps
local normalized={
 substitution="substitution",
 single="substitution",
 ligature="ligature",
 alternate="alternate",
 multiple="multiple",
 kern="kern",
 pair="pair",
 single="single",
 chainsubstitution="chainsubstitution",
 chainposition="chainposition",
}
local types={
 substitution="gsub_single",
 ligature="gsub_ligature",
 alternate="gsub_alternate",
 multiple="gsub_multiple",
 kern="gpos_pair",
 pair="gpos_pair",
 single="gpos_single",
 chainsubstitution="gsub_contextchain",
 chainposition="gpos_contextchain",
}
local names={
 gsub_single="gsub",
 gsub_multiple="gsub",
 gsub_alternate="gsub",
 gsub_ligature="gsub",
 gsub_context="gsub",
 gsub_contextchain="gsub",
 gsub_reversecontextchain="gsub",
 gpos_single="gpos",
 gpos_pair="gpos",
 gpos_cursive="gpos",
 gpos_mark2base="gpos",
 gpos_mark2ligature="gpos",
 gpos_mark2mark="gpos",
 gpos_context="gpos",
 gpos_contextchain="gpos",
}
setmetatableindex(types,function(t,k) t[k]=k return k end) 
local everywhere={ ["*"]={ ["*"]=true } } 
local noflags={ false,false,false,false }
local function getrange(sequences,category)
 local count=#sequences
 local first=nil
 local last=nil
 for i=1,count do
  local t=sequences[i].type
  if t and names[t]==category then
   if not first then
    first=i
   end
   last=i
  end
 end
 return first or 1,last or count
end
local function validspecification(specification,name)
 local dataset=specification.dataset
 if dataset then
 elseif specification[1] then
  dataset=specification
  specification={ dataset=dataset }
 else
  dataset={ { data=specification.data } }
  specification.data=nil
  specification.dataset=dataset
 end
 local first=dataset[1]
 if first then
  first=first.data
 end
 if not first then
  report_otf("invalid feature specification, no dataset")
  return
 end
 if type(name)~="string" then
  name=specification.name or first.name
 end
 if type(name)~="string" then
  report_otf("invalid feature specification, no name")
  return
 end
 local n=#dataset
 if n>0 then
  for i=1,n do
   setmetatableindex(dataset[i],specification)
  end
  return specification,name
 end
end
local function addfeature(data,feature,specifications)
 if not specifications then
  report_otf("missing specification")
  return
 end
 local descriptions=data.descriptions
 local resources=data.resources
 local features=resources.features
 local sequences=resources.sequences
 if not features or not sequences then
  report_otf("missing specification")
  return
 end
 local alreadydone=resources.alreadydone
 if not alreadydone then
  alreadydone={}
  resources.alreadydone=alreadydone
 end
 if alreadydone[specifications] then
  return
 else
  alreadydone[specifications]=true
 end
 local fontfeatures=resources.features or everywhere
 local unicodes=resources.unicodes
 local splitter=lpeg.splitter(" ",unicodes)
 local done=0
 local skip=0
 local aglunicodes=false
 local privateslot=fonthelpers.privateslot
 local specifications=validspecification(specifications,feature)
 if not specifications then
  return
 end
 local p=lpeg.P("P")*(lpeg.patterns.hexdigit^1/function(s) return tonumber(s,16) end)*lpeg.P(-1)
 local function tounicode(code)
  if not code then
   return
  end
  if type(code)=="number" then
   return code
  end
  local u=unicodes[code]
  if u then
   return u
  end
  if utflen(code)==1 then
   u=utfbyte(code)
   if u then
    return u
   end
  end
  if privateslot then
   u=privateslot(code) 
   if u then
    return u
   end
  end
  local u=lpegmatch(p,code)
  if u then
   return u
  end
  if not aglunicodes then
   aglunicodes=fonts.encodings.agl.unicodes 
  end
  local u=aglunicodes[code]
  if u then
   return u
  end
 end
 local coverup=otf.coverup
 local coveractions=coverup.actions
 local stepkey=coverup.stepkey
 local register=coverup.register
 local function prepare_substitution(list,featuretype,nocheck)
  local coverage={}
  local cover=coveractions[featuretype]
  for code,replacement in next,list do
   local unicode=tounicode(code)
   local description=descriptions[unicode]
   if not nocheck and not description then
    skip=skip+1
   else
    if type(replacement)=="table" then
     replacement=replacement[1]
    end
    replacement=tounicode(replacement)
    if replacement and (nocheck or descriptions[replacement]) then
     cover(coverage,unicode,replacement)
     done=done+1
    else
     skip=skip+1
    end
   end
  end
  return coverage
 end
 local function prepare_alternate(list,featuretype,nocheck)
  local coverage={}
  local cover=coveractions[featuretype]
  for code,replacement in next,list do
   local unicode=tounicode(code)
   local description=descriptions[unicode]
   if not nocheck and not description then
    skip=skip+1
   elseif type(replacement)=="table" then
    local r={}
    for i=1,#replacement do
     local u=tounicode(replacement[i])
     r[i]=(nocheck or descriptions[u]) and u or unicode
    end
    cover(coverage,unicode,r)
    done=done+1
   else
    local u=tounicode(replacement)
    if u then
     cover(coverage,unicode,{ u })
     done=done+1
    else
     skip=skip+1
    end
   end
  end
  return coverage
 end
 local function prepare_multiple(list,featuretype,nocheck)
  local coverage={}
  local cover=coveractions[featuretype]
  for code,replacement in next,list do
   local unicode=tounicode(code)
   local description=descriptions[unicode]
   if not nocheck and not description then
    skip=skip+1
   elseif type(replacement)=="table" then
    local r={}
    local n=0
    for i=1,#replacement do
     local u=tounicode(replacement[i])
     if nocheck or descriptions[u] then
      n=n+1
      r[n]=u
     end
    end
    if n>0 then
     cover(coverage,unicode,r)
     done=done+1
    else
     skip=skip+1
    end
   else
    local u=tounicode(replacement)
    if u then
     cover(coverage,unicode,{ u })
     done=done+1
    else
     skip=skip+1
    end
   end
  end
  return coverage
 end
 local function prepare_ligature(list,featuretype,nocheck)
  local coverage={}
  local cover=coveractions[featuretype]
  for code,ligature in next,list do
   local unicode=tounicode(code)
   local description=descriptions[unicode]
   if not nocheck and not description then
    skip=skip+1
   else
    if type(ligature)=="string" then
     ligature={ lpegmatch(splitter,ligature) }
    end
    local present=true
    for i=1,#ligature do
     local l=ligature[i]
     local u=tounicode(l)
     if nocheck or descriptions[u] then
      ligature[i]=u
     else
      present=false
      break
     end
    end
    if present then
     cover(coverage,unicode,ligature)
     done=done+1
    else
     skip=skip+1
    end
   end
  end
  return coverage
 end
 local function resetspacekerns()
  data.properties.hasspacekerns=true
  data.resources .spacekerns=nil
 end
 local function prepare_kern(list,featuretype)
  local coverage={}
  local cover=coveractions[featuretype]
  local isspace=false
  for code,replacement in next,list do
   local unicode=tounicode(code)
   local description=descriptions[unicode]
   if description and type(replacement)=="table" then
    local r={}
    for k,v in next,replacement do
     local u=tounicode(k)
     if u then
      r[u]=v
      if u==32 then
       isspace=true
      end
     end
    end
    if next(r) then
     cover(coverage,unicode,r)
     done=done+1
     if unicode==32 then
      isspace=true
     end
    else
     skip=skip+1
    end
   else
    skip=skip+1
   end
  end
  if isspace then
   resetspacekerns()
  end
  return coverage
 end
 local function prepare_pair(list,featuretype)
  local coverage={}
  local cover=coveractions[featuretype]
  if cover then
   for code,replacement in next,list do
    local unicode=tounicode(code)
    local description=descriptions[unicode]
    if description and type(replacement)=="table" then
     local r={}
     for k,v in next,replacement do
      local u=tounicode(k)
      if u then
       r[u]=v
       if u==32 then
        isspace=true
       end
      end
     end
     if next(r) then
      cover(coverage,unicode,r)
      done=done+1
      if unicode==32 then
       isspace=true
      end
     else
      skip=skip+1
     end
    else
     skip=skip+1
    end
   end
   if isspace then
    resetspacekerns()
   end
  else
   report_otf("unknown cover type %a",featuretype)
  end
  return coverage
 end
 local prepare_single=prepare_pair 
 local function prepare_chain(list,featuretype,sublookups)
  local rules=list.rules
  local coverage={}
  if rules then
   local rulehash={}
   local rulesize=0
   local lookuptype=types[featuretype]
   for nofrules=1,#rules do
    local rule=rules[nofrules]
    local current=rule.current
    local before=rule.before
    local after=rule.after
    local replacements=rule.replacements or false
    local sequence={}
    local nofsequences=0
    if before then
     for n=1,#before do
      nofsequences=nofsequences+1
      sequence[nofsequences]=before[n]
     end
    end
    local start=nofsequences+1
    for n=1,#current do
     nofsequences=nofsequences+1
     sequence[nofsequences]=current[n]
    end
    local stop=nofsequences
    if after then
     for n=1,#after do
      nofsequences=nofsequences+1
      sequence[nofsequences]=after[n]
     end
    end
    local lookups=rule.lookups or false
    local subtype=nil
    if lookups and sublookups then
     for k,v in sortedhash(lookups) do
      local t=type(v)
      if t=="table" then
       for i=1,#v do
        local vi=v[i]
        if type(vi)~="table" then
         v[i]={ vi }
        end
       end
      elseif t=="number" then
       local lookup=sublookups[v]
       if lookup then
        lookups[k]={ lookup }
        if not subtype then
         subtype=lookup.type
        end
       elseif v==0 then
        lookups[k]={ { type="gsub_remove" } }
       else
        lookups[k]=false 
       end
      else
       lookups[k]=false 
      end
     end
    end
    if nofsequences>0 then
     local hashed={}
     for i=1,nofsequences do
      local t={}
      local s=sequence[i]
      for i=1,#s do
       local u=tounicode(s[i])
       if u then
        t[u]=true
       end
      end
      hashed[i]=t
     end
     sequence=hashed
     rulesize=rulesize+1
     rulehash[rulesize]={
      nofrules,
      lookuptype,
      sequence,
      start,
      stop,
      lookups,
      replacements,
      subtype,
     }
     for unic in sortedhash(sequence[start]) do
      local cu=coverage[unic]
      if not cu then
       coverage[unic]=rulehash 
      end
     end
     sequence.n=nofsequences
    end
   end
   rulehash.n=rulesize
  end
  return coverage
 end
 local dataset=specifications.dataset
 local function report(name,category,position,first,last,sequences)
  report_otf("injecting name %a of category %a at position %i in [%i,%i] of [%i,%i]",
   name,category,position,first,last,1,#sequences)
 end
 local function inject(specification,sequences,sequence,first,last,category,name)
  local position=specification.position or false
  if not position then
   position=specification.prepend
   if position==true then
    if trace_loading then
     report(name,category,first,first,last,sequences)
    end
    insert(sequences,first,sequence)
    return
   end
  end
  if not position then
   position=specification.append
   if position==true then
    if trace_loading then
     report(name,category,last+1,first,last,sequences)
    end
    insert(sequences,last+1,sequence)
    return
   end
  end
  local kind=type(position)
  if kind=="string" then
   local index=false
   for i=first,last do
    local s=sequences[i]
    local f=s.features
    if f then
     for k in sortedhash(f) do 
      if k==position then
       index=i
       break
      end
     end
     if index then
      break
     end
    end
   end
   if index then
    position=index
   else
    position=last+1
   end
  elseif kind=="number" then
   if position<0 then
    position=last-position+1
   end
   if position>last then
    position=last+1
   elseif position<first then
    position=first
   end
  else
   position=last+1
  end
  if trace_loading then
   report(name,category,position,first,last,sequences)
  end
  insert(sequences,position,sequence)
 end
 for s=1,#dataset do
  local specification=dataset[s]
  local valid=specification.valid 
  local feature=specification.name or feature
  if not feature or feature=="" then
   report_otf("no valid name given for extra feature")
  elseif not valid or valid(data,specification,feature) then 
   local initialize=specification.initialize
   if initialize then
    specification.initialize=initialize(specification,data) and initialize or nil
   end
   local askedfeatures=specification.features or everywhere
   local askedsteps=specification.steps or specification.subtables or { specification.data } or {}
   local featuretype=normalized[specification.type or "substitution"] or "substitution"
   local featureflags=specification.flags or noflags
   local nocheck=specification.nocheck
   local featureorder=specification.order or { feature }
   local featurechain=(featuretype=="chainsubstitution" or featuretype=="chainposition") and 1 or 0
   local nofsteps=0
   local steps={}
   local sublookups=specification.lookups
   local category=nil
   checkflags(specification,resources)
   if sublookups then
    local s={}
    for i=1,#sublookups do
     local specification=sublookups[i]
     local askedsteps=specification.steps or specification.subtables or { specification.data } or {}
     local featuretype=normalized[specification.type or "substitution"] or "substitution"
     local featureflags=specification.flags or noflags
     local nofsteps=0
     local steps={}
     for i=1,#askedsteps do
      local list=askedsteps[i]
      local coverage=nil
      local format=nil
      if featuretype=="substitution" then
       coverage=prepare_substitution(list,featuretype,nocheck)
      elseif featuretype=="ligature" then
       coverage=prepare_ligature(list,featuretype,nocheck)
      elseif featuretype=="alternate" then
       coverage=prepare_alternate(list,featuretype,nocheck)
      elseif featuretype=="multiple" then
       coverage=prepare_multiple(list,featuretype,nocheck)
      elseif featuretype=="kern" or featuretype=="move" then
       format=featuretype
       coverage=prepare_kern(list,featuretype)
      elseif featuretype=="pair" then
       format="pair"
       coverage=prepare_pair(list,featuretype)
      elseif featuretype=="single" then
       format="single"
       coverage=prepare_single(list,featuretype)
      end
      if coverage and next(coverage) then
       nofsteps=nofsteps+1
       steps[nofsteps]=register(coverage,featuretype,format,feature,nofsteps,descriptions,resources)
      end
     end
     checkmerge(specification)
     checksteps(specification)
     s[i]={
      [stepkey]=steps,
      nofsteps=nofsteps,
      flags=featureflags,
      type=types[featuretype],
     }
    end
    sublookups=s
   end
   for i=1,#askedsteps do
    local list=askedsteps[i]
    local coverage=nil
    local format=nil
    if featuretype=="substitution" then
     category="gsub"
     coverage=prepare_substitution(list,featuretype,nocheck)
    elseif featuretype=="ligature" then
     category="gsub"
     coverage=prepare_ligature(list,featuretype,nocheck)
    elseif featuretype=="alternate" then
     category="gsub"
     coverage=prepare_alternate(list,featuretype,nocheck)
    elseif featuretype=="multiple" then
     category="gsub"
     coverage=prepare_multiple(list,featuretype,nocheck)
    elseif featuretype=="kern" or featuretype=="move" then
     category="gpos"
     format=featuretype
     coverage=prepare_kern(list,featuretype)
    elseif featuretype=="pair" then
     category="gpos"
     format="pair"
     coverage=prepare_pair(list,featuretype)
    elseif featuretype=="single" then
     category="gpos"
     format="single"
     coverage=prepare_single(list,featuretype)
    elseif featuretype=="chainsubstitution" then
     category="gsub"
     coverage=prepare_chain(list,featuretype,sublookups)
    elseif featuretype=="chainposition" then
     category="gpos"
     coverage=prepare_chain(list,featuretype,sublookups)
    else
     report_otf("not registering feature %a, unknown category",feature)
     return
    end
    if coverage and next(coverage) then
     nofsteps=nofsteps+1
     steps[nofsteps]=register(coverage,featuretype,format,feature,nofsteps,descriptions,resources)
    end
   end
   if nofsteps>0 then
    for k,v in next,askedfeatures do
     if v[1] then
      askedfeatures[k]=tohash(v)
     end
    end
    if featureflags[1] then featureflags[1]="mark" end
    if featureflags[2] then featureflags[2]="ligature" end
    if featureflags[3] then featureflags[3]="base" end
    local steptype=types[featuretype]
    local sequence={
     chain=featurechain,
     features={ [feature]=askedfeatures },
     flags=featureflags,
     name=feature,
     order=featureorder,
     [stepkey]=steps,
     nofsteps=nofsteps,
     type=steptype,
    }
    checkflags(sequence,resources)
    checkmerge(sequence)
    checksteps(sequence)
    local first,last=getrange(sequences,category)
    inject(specification,sequences,sequence,first,last,category,feature)
    local features=fontfeatures[category]
    if not features then
     features={}
     fontfeatures[category]=features
    end
    local k=features[feature]
    if not k then
     k={}
     features[feature]=k
    end
    for script,languages in next,askedfeatures do
     local kk=k[script]
     if not kk then
      kk={}
      k[script]=kk
     end
     for language,value in next,languages do
      kk[language]=value
     end
    end
   end
  end
 end
 if trace_loading then
  report_otf("registering feature %a, affected glyphs %a, skipped glyphs %a",feature,done,skip)
 end
end
otf.enhancers.addfeature=addfeature
local extrafeatures={}
local knownfeatures={}
function otf.addfeature(name,specification)
 if type(name)=="table" then
  specification=name
 end
 if type(specification)~="table" then
  report_otf("invalid feature specification, no valid table")
  return
 end
 specification,name=validspecification(specification,name)
 if name and specification then
  local slot=knownfeatures[name]
  if not slot then
   slot=#extrafeatures+1
   knownfeatures[name]=slot
  elseif specification.overload==false then
   slot=#extrafeatures+1
   knownfeatures[name]=slot
  else
  end
  specification.name=name 
  extrafeatures[slot]=specification
 end
end
local function enhance(data,filename,raw)
 for slot=1,#extrafeatures do
  local specification=extrafeatures[slot]
  addfeature(data,specification.name,specification)
 end
end
otf.enhancers.enhance=enhance
otf.enhancers.register("check extra features",enhance)

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['font-onr']={
 version=1.001,
 comment="companion to font-ini.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
local fonts,logs,trackers,resolvers=fonts,logs,trackers,resolvers
local next,type,tonumber,rawset=next,type,tonumber,rawset
local match,lower,gsub,strip,find=string.match,string.lower,string.gsub,string.strip,string.find
local char,byte,sub=string.char,string.byte,string.sub
local abs=math.abs
local bxor,rshift=bit32.bxor,bit32.rshift
local P,S,R,V,Cmt,C,Ct,Cs,Carg,Cf,Cg,Cc=lpeg.P,lpeg.S,lpeg.R,lpeg.V,lpeg.Cmt,lpeg.C,lpeg.Ct,lpeg.Cs,lpeg.Carg,lpeg.Cf,lpeg.Cg,lpeg.Cc
local lpegmatch,patterns=lpeg.match,lpeg.patterns
local trace_indexing=false  trackers.register("afm.indexing",function(v) trace_indexing=v end)
local trace_loading=false  trackers.register("afm.loading",function(v) trace_loading=v end)
local report_afm=logs.reporter("fonts","afm loading")
local report_pfb=logs.reporter("fonts","pfb loading")
local handlers=fonts.handlers
local afm=handlers.afm or {}
handlers.afm=afm
local readers=afm.readers or {}
afm.readers=readers
afm.version=1.513
local get_indexes,get_shapes
do
 local decrypt
 do
  local r,c1,c2,n=0,0,0,0
  local function step(c)
   local cipher=byte(c)
   local plain=bxor(cipher,rshift(r,8))
   r=((cipher+r)*c1+c2)%65536
   return char(plain)
  end
  decrypt=function(binary,initial,seed)
   r,c1,c2,n=initial,52845,22719,seed
   binary=gsub(binary,".",step)
   return sub(binary,n+1)
  end
 end
 local charstrings=P("/CharStrings")
 local subroutines=P("/Subrs")
 local encoding=P("/Encoding")
 local dup=P("dup")
 local put=P("put")
 local array=P("array")
 local name=P("/")*C((R("az","AZ","09")+S("-_."))^1)
 local digits=R("09")^1
 local cardinal=digits/tonumber
 local spaces=P(" ")^1
 local spacing=patterns.whitespace^0
 local routines,vector,chars,n,m
 local initialize=function(str,position,size)
  n=0
  m=size
  return position+1
 end
 local setroutine=function(str,position,index,size,filename)
  if routines[index] then
   return false
  end
  local forward=position+size
  local stream=decrypt(sub(str,position+1,forward),4330,4)
  routines[index]={ byte(stream,1,#stream) }
  n=n+1
  if n>=m then
   return #str
  end
  return forward+1
 end
 local setvector=function(str,position,name,size,filename)
  local forward=position+tonumber(size)
  if n>=m then
   return #str
  elseif forward<#str then
   if n==0 and name~=".notdef" then
    report_pfb("reserving .notdef at index 0 in %a",filename) 
    n=n+1
   end
   vector[n]=name
   n=n+1
   return forward
  else
   return #str
  end
 end
 local setshapes=function(str,position,name,size,filename)
  local forward=position+tonumber(size)
  local stream=sub(str,position+1,forward)
  if n>m then
   return #str
  elseif forward<#str then
   if n==0 and name~=".notdef" then
    report_pfb("reserving .notdef at index 0 in %a",filename) 
    n=n+1
   end
   vector[n]=name
   n=n+1
   chars [n]=decrypt(stream,4330,4)
   return forward
  else
   return #str
  end
 end
 local p_rd=spacing*(P("RD")+P("-|"))
 local p_np=spacing*(P("NP")+P("|"))
 local p_nd=spacing*(P("ND")+P("|"))
 local p_filterroutines=
  (1-subroutines)^0*subroutines*spaces*Cmt(cardinal,initialize)*(Cmt(cardinal*spaces*cardinal*p_rd*Carg(1),setroutine)*p_np+(1-p_nd))^1
 local p_filtershapes=
  (1-charstrings)^0*charstrings*spaces*Cmt(cardinal,initialize)*(Cmt(name*spaces*cardinal*p_rd*Carg(1),setshapes)*p_nd+P(1))^1
 local p_filternames=Ct (
  (1-charstrings)^0*charstrings*spaces*Cmt(cardinal,initialize)*(Cmt(name*spaces*cardinal*Carg(1),setvector)+P(1))^1
 )
 local p_filterencoding=(1-encoding)^0*encoding*spaces*digits*spaces*array*(1-dup)^0*Cf(
   Ct("")*Cg(spacing*dup*spaces*cardinal*spaces*name*spaces*put)^1
,rawset)
 local key=spacing*P("/")*R("az","AZ")
 local str=spacing*Cs { (P("(")/"")*((1-P("\\(")-P("\\)")-S("()"))+V(1))^0*(P(")")/"") }
 local num=spacing*(R("09")+S("+-."))^1/tonumber
 local arr=spacing*Ct (S("[{")*(num)^0*spacing*S("]}"))
 local boo=spacing*(P("true")*Cc(true)+P("false")*Cc(false))
 local nam=spacing*P("/")*Cs(R("az","AZ")^1)
 local p_filtermetadata=(
  P("/")*Carg(1)*((
   C("version")*str+C("Copyright")*str+C("Notice")*str+C("FullName")*str+C("FamilyName")*str+C("Weight")*str+C("ItalicAngle")*num+C("isFixedPitch")*boo+C("UnderlinePosition")*num+C("UnderlineThickness")*num+C("FontName")*nam+C("FontMatrix")*arr+C("FontBBox")*arr
  ) )/function(t,k,v) t[lower(k)]=v end+P(1)
 )^0*Carg(1)
 local function loadpfbvector(filename,shapestoo,streams)
  local data=io.loaddata(resolvers.findfile(filename))
  if not data then
   report_pfb("no data in %a",filename)
   return
  end
  if not (find(data,"!PS-AdobeFont-",1,true) or find(data,"%!FontType1",1,true)) then
   report_pfb("no font in %a",filename)
   return
  end
  local ascii,binary=match(data,"(.*)eexec%s+......(.*)")
  if not binary then
   report_pfb("no binary data in %a",filename)
   return
  end
  binary=decrypt(binary,55665,4)
  local names={}
  local encoding=lpegmatch(p_filterencoding,ascii)
  local metadata=lpegmatch(p_filtermetadata,ascii,1,{})
  local glyphs={}
  routines,vector,chars={},{},{}
  if shapestoo or streams then
   lpegmatch(p_filterroutines,binary,1,filename)
   lpegmatch(p_filtershapes,binary,1,filename)
   local data={
    dictionaries={
     {
      charstrings=chars,
      charset=vector,
      subroutines=routines,
     }
    },
   }
   fonts.handlers.otf.readers.parsecharstrings(false,data,glyphs,true,"cff",streams,true)
  else
   lpegmatch(p_filternames,binary,1,filename)
  end
  names=vector
  routines,vector,chars=nil,nil,nil
  return names,encoding,glyphs,metadata
 end
 local pfb=handlers.pfb or {}
 handlers.pfb=pfb
 pfb.loadvector=loadpfbvector
 get_indexes=function(data,pfbname)
  local vector=loadpfbvector(pfbname)
  if vector then
   local characters=data.characters
   if trace_loading then
    report_afm("getting index data from %a",pfbname)
   end
   for index=0,#vector do 
    local name=vector[index]
    local char=characters[name]
    if char then
     if trace_indexing then
      report_afm("glyph %a has index %a",name,index)
     end
     char.index=index
    else
     if trace_indexing then
      report_afm("glyph %a has index %a but no data",name,index)
     end
    end
   end
  end
 end
 get_shapes=function(pfbname)
  local vector,encoding,glyphs=loadpfbvector(pfbname,true)
  return glyphs
 end
end
local spacer=patterns.spacer
local whitespace=patterns.whitespace
local lineend=patterns.newline
local spacing=spacer^0
local number=spacing*S("+-")^-1*(R("09")+S("."))^1/tonumber
local name=spacing*C((1-whitespace)^1)
local words=spacing*((1-lineend)^1/strip)
local rest=(1-lineend)^0
local fontdata=Carg(1)
local semicolon=spacing*P(";")
local plus=spacing*P("plus")*number
local minus=spacing*P("minus")*number
local function addkernpair(data,one,two,value)
 local chr=data.characters[one]
 if chr then
  local kerns=chr.kerns
  if kerns then
   kerns[two]=tonumber(value)
  else
   chr.kerns={ [two]=tonumber(value) }
  end
 end
end
local p_kernpair=(fontdata*P("KPX")*name*name*number)/addkernpair
local chr=false
local ind=0
local function start(data,version)
 data.metadata.afmversion=version
 ind=0
 chr={}
end
local function stop()
 ind=0
 chr=false
end
local function setindex(i)
 if i<0 then
  ind=ind+1 
 else
  ind=i
 end
 chr={
  index=ind
 }
end
local function setwidth(width)
 chr.width=width
end
local function setname(data,name)
 data.characters[name]=chr
end
local function setboundingbox(boundingbox)
 chr.boundingbox=boundingbox
end
local function setligature(plus,becomes)
 local ligatures=chr.ligatures
 if ligatures then
  ligatures[plus]=becomes
 else
  chr.ligatures={ [plus]=becomes }
 end
end
local p_charmetric=((
 P("C")*number/setindex+P("WX")*number/setwidth+P("N")*fontdata*name/setname+P("B")*Ct((number)^4)/setboundingbox+P("L")*(name)^2/setligature
  )*semicolon )^1
local p_charmetrics=P("StartCharMetrics")*number*(p_charmetric+(1-P("EndCharMetrics")))^0*P("EndCharMetrics")
local p_kernpairs=P("StartKernPairs")*number*(p_kernpair+(1-P("EndKernPairs"  )))^0*P("EndKernPairs"  )
local function set_1(data,key,a)  data.metadata[lower(key)]=a     end
local function set_2(data,key,a,b)   data.metadata[lower(key)]={ a,b } end
local function set_3(data,key,a,b,c) data.metadata[lower(key)]={ a,b,c } end
local p_parameters=P(false)+fontdata*((P("FontName")+P("FullName")+P("FamilyName"))/lower)*words/function(data,key,value)
  data.metadata[key]=value
 end+fontdata*((P("Weight")+P("Version"))/lower)*name/function(data,key,value)
  data.metadata[key]=value
 end+fontdata*P("IsFixedPitch")*name/function(data,pitch)
  data.metadata.monospaced=toboolean(pitch,true)
 end+fontdata*P("FontBBox")*Ct(number^4)/function(data,boundingbox)
  data.metadata.boundingbox=boundingbox
  end+fontdata*((P("CharWidth")+P("CapHeight")+P("XHeight")+P("Descender")+P("Ascender")+P("ItalicAngle"))/lower)*number/function(data,key,value)
  data.metadata[key]=value
 end+P("Comment")*spacing*(P(false)+(fontdata*C("DESIGNSIZE")*number*rest)/set_1 
+(fontdata*C("TFM designsize")*number*rest)/set_1+(fontdata*C("DesignSize")*number*rest)/set_1+(fontdata*C("CODINGSCHEME")*words*rest)/set_1 
+(fontdata*C("CHECKSUM")*number*words*rest)/set_1 
+(fontdata*C("SPACE")*number*plus*minus*rest)/set_3 
+(fontdata*C("QUAD")*number*rest)/set_1 
+(fontdata*C("EXTRASPACE")*number*rest)/set_1 
+(fontdata*C("NUM")*number*number*number*rest)/set_3 
+(fontdata*C("DENOM")*number*number*rest)/set_2 
+(fontdata*C("SUP")*number*number*number*rest)/set_3 
+(fontdata*C("SUB")*number*number*rest)/set_2 
+(fontdata*C("SUPDROP")*number*rest)/set_1 
+(fontdata*C("SUBDROP")*number*rest)/set_1 
+(fontdata*C("DELIM")*number*number*rest)/set_2 
+(fontdata*C("AXISHEIGHT")*number*rest)/set_1 
 )
local fullparser=(P("StartFontMetrics")*fontdata*name/start )*(p_charmetrics+p_kernpairs+p_parameters+(1-P("EndFontMetrics")) )^0*(P("EndFontMetrics")/stop )
local infoparser=(P("StartFontMetrics")*fontdata*name/start )*(p_parameters+(1-P("EndFontMetrics")) )^0*(P("EndFontMetrics")/stop )
local function read(filename,parser)
 local afmblob=io.loaddata(filename)
 if afmblob then
  local data={
   resources={
    filename=resolvers.unresolve(filename),
    version=afm.version,
    creator="context mkiv",
   },
   properties={
    hasitalics=false,
   },
   goodies={},
   metadata={
    filename=file.removesuffix(file.basename(filename))
   },
   characters={
   },
   descriptions={
   },
  }
  if trace_loading then
   report_afm("parsing afm file %a",filename)
  end
  lpegmatch(parser,afmblob,1,data)
  return data
 else
  if trace_loading then
   report_afm("no valid afm file %a",filename)
  end
  return nil
 end
end
function readers.loadfont(afmname,pfbname)
 local data=read(resolvers.findfile(afmname),fullparser)
 if data then
  if not pfbname or pfbname=="" then
   pfbname=resolvers.findfile(file.replacesuffix(file.nameonly(afmname),"pfb"))
  end
  if pfbname and pfbname~="" then
   data.resources.filename=resolvers.unresolve(pfbname)
   get_indexes(data,pfbname)
   return data
  else 
   report_afm("no pfb file for %a",afmname)
  end
 end
end
function readers.loadshapes(filename)
 local fullname=resolvers.findfile(filename) or ""
 if fullname=="" then
  return {
   filename="not found: "..filename,
   glyphs={}
  }
 else
  return {
   filename=fullname,
   format="opentype",
   glyphs=get_shapes(fullname) or {},
   units=1000,
  }
 end
end
function readers.getinfo(filename)
 local data=read(resolvers.findfile(filename),infoparser)
 if data then
  return data.metadata
 end
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['font-one']={
 version=1.001,
 comment="companion to font-ini.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
local fonts,logs,trackers,containers,resolvers=fonts,logs,trackers,containers,resolvers
local next,type,tonumber,rawget=next,type,tonumber,rawget
local match,gsub=string.match,string.gsub
local abs=math.abs
local P,S,R,Cmt,C,Ct,Cs,Carg=lpeg.P,lpeg.S,lpeg.R,lpeg.Cmt,lpeg.C,lpeg.Ct,lpeg.Cs,lpeg.Carg
local lpegmatch,patterns=lpeg.match,lpeg.patterns
local sortedhash=table.sortedhash
local trace_features=false  trackers.register("afm.features",function(v) trace_features=v end)
local trace_indexing=false  trackers.register("afm.indexing",function(v) trace_indexing=v end)
local trace_loading=false  trackers.register("afm.loading",function(v) trace_loading=v end)
local trace_defining=false  trackers.register("fonts.defining",function(v) trace_defining=v end)
local report_afm=logs.reporter("fonts","afm loading")
local setmetatableindex=table.setmetatableindex
local derivetable=table.derive
local findbinfile=resolvers.findbinfile
local privateoffset=fonts.constructors and fonts.constructors.privateoffset or 0xF0000 
local definers=fonts.definers
local readers=fonts.readers
local constructors=fonts.constructors
local afm=constructors.handlers.afm
local pfb=constructors.handlers.pfb
local otf=fonts.handlers.otf
local otfreaders=otf.readers
local otfenhancers=otf.enhancers
local afmfeatures=constructors.features.afm
local registerafmfeature=afmfeatures.register
local afmenhancers=constructors.enhancers.afm
local registerafmenhancer=afmenhancers.register
afm.version=1.513 
afm.cache=containers.define("fonts","one",afm.version,true)
afm.autoprefixed=true 
afm.helpdata={}  
afm.syncspace=true 
local overloads=fonts.mappings.overloads
local applyruntimefixes=fonts.treatments and fonts.treatments.applyfixes
function afm.load(filename)
 filename=resolvers.findfile(filename,'afm') or ""
 if filename~="" and not fonts.names.ignoredfile(filename) then
  local name=file.removesuffix(file.basename(filename))
  local data=containers.read(afm.cache,name)
  local attr=lfs.attributes(filename)
  local size=attr and attr.size or 0
  local time=attr and attr.modification or 0
  local pfbfile=file.replacesuffix(name,"pfb")
  local pfbname=resolvers.findfile(pfbfile,"pfb") or ""
  if pfbname=="" then
   pfbname=resolvers.findfile(file.basename(pfbfile),"pfb") or ""
  end
  local pfbsize=0
  local pfbtime=0
  if pfbname~="" then
   local attr=lfs.attributes(pfbname)
   pfbsize=attr.size or 0
   pfbtime=attr.modification or 0
  end
  if not data or data.size~=size or data.time~=time or data.pfbsize~=pfbsize or data.pfbtime~=pfbtime then
   report_afm("reading %a",filename)
   data=afm.readers.loadfont(filename,pfbname)
   if data then
    afmenhancers.apply(data,filename)
    fonts.mappings.addtounicode(data,filename)
    otfreaders.stripredundant(data)
    otfreaders.pack(data)
    data.size=size
    data.time=time
    data.pfbsize=pfbsize
    data.pfbtime=pfbtime
    report_afm("saving %a in cache",name)
    data=containers.write(afm.cache,name,data)
    data=containers.read(afm.cache,name)
   end
  end
  if data then
   otfreaders.unpack(data)
   otfreaders.expand(data) 
   otfreaders.addunicodetable(data) 
   otfenhancers.apply(data,filename,data)
   if applyruntimefixes then
    applyruntimefixes(filename,data)
   end
  end
  return data
 end
end
local uparser=fonts.mappings.makenameparser() 
local function enhance_unify_names(data,filename)
 local unicodevector=fonts.encodings.agl.unicodes 
 local unicodes={}
 local names={}
 local private=data.private or privateoffset
 local descriptions=data.descriptions
 for name,blob in sortedhash(data.characters) do 
  local code=unicodevector[name] 
  if not code then
   code=lpegmatch(uparser,name)
   if type(code)~="number" then
    code=private
    private=private+1
    report_afm("assigning private slot %U for unknown glyph name %a",code,name)
   end
  end
  local index=blob.index
  unicodes[name]=code
  names[name]=index
  blob.name=name
  descriptions[code]={
   boundingbox=blob.boundingbox,
   width=blob.width,
   kerns=blob.kerns,
   index=index,
   name=name,
  }
 end
 for unicode,description in next,descriptions do
  local kerns=description.kerns
  if kerns then
   local krn={}
   for name,kern in next,kerns do
    local unicode=unicodes[name]
    if unicode then
     krn[unicode]=kern
    else
    end
   end
   description.kerns=krn
  end
 end
 data.characters=nil
 data.private=private
 local resources=data.resources
 local filename=resources.filename or file.removesuffix(file.basename(filename))
 resources.filename=resolvers.unresolve(filename) 
 resources.unicodes=unicodes 
 resources.marks={}
end
local everywhere={ ["*"]={ ["*"]=true } } 
local noflags={ false,false,false,false }
local function enhance_normalize_features(data)
 local ligatures=setmetatableindex("table")
 local kerns=setmetatableindex("table")
 local extrakerns=setmetatableindex("table")
 for u,c in next,data.descriptions do
  local l=c.ligatures
  local k=c.kerns
  local e=c.extrakerns
  if l then
   ligatures[u]=l
   for u,v in next,l do
    l[u]={ ligature=v }
   end
   c.ligatures=nil
  end
  if k then
   kerns[u]=k
   for u,v in next,k do
    k[u]=v 
   end
   c.kerns=nil
  end
  if e then
   extrakerns[u]=e
   for u,v in next,e do
    e[u]=v 
   end
   c.extrakerns=nil
  end
 end
 local features={
  gpos={},
  gsub={},
 }
 local sequences={
 }
 if next(ligatures) then
  features.gsub.liga=everywhere
  data.properties.hasligatures=true
  sequences[#sequences+1]={
   features={
    liga=everywhere,
   },
   flags=noflags,
   name="s_s_0",
   nofsteps=1,
   order={ "liga" },
   type="gsub_ligature",
   steps={
    {
     coverage=ligatures,
    },
   },
  }
 end
 if next(kerns) then
  features.gpos.kern=everywhere
  data.properties.haskerns=true
  sequences[#sequences+1]={
   features={
    kern=everywhere,
   },
   flags=noflags,
   name="p_s_0",
   nofsteps=1,
   order={ "kern" },
   type="gpos_pair",
   steps={
    {
     format="kern",
     coverage=kerns,
    },
   },
  }
 end
 if next(extrakerns) then
  features.gpos.extrakerns=everywhere
  data.properties.haskerns=true
  sequences[#sequences+1]={
   features={
    extrakerns=everywhere,
   },
   flags=noflags,
   name="p_s_1",
   nofsteps=1,
   order={ "extrakerns" },
   type="gpos_pair",
   steps={
    {
     format="kern",
     coverage=extrakerns,
    },
   },
  }
 end
 data.resources.features=features
 data.resources.sequences=sequences
end
local function enhance_fix_names(data)
 for k,v in next,data.descriptions do
  local n=v.name
  local r=overloads[n]
  if r then
   local name=r.name
   if trace_indexing then
    report_afm("renaming characters %a to %a",n,name)
   end
   v.name=name
   v.unicode=r.unicode
  end
 end
end
local addthem=function(rawdata,ligatures)
 if ligatures then
  local descriptions=rawdata.descriptions
  local resources=rawdata.resources
  local unicodes=resources.unicodes
  for ligname,ligdata in next,ligatures do
   local one=descriptions[unicodes[ligname]]
   if one then
    for _,pair in next,ligdata do
     local two=unicodes[pair[1]]
     local three=unicodes[pair[2]]
     if two and three then
      local ol=one.ligatures
      if ol then
       if not ol[two] then
        ol[two]=three
       end
      else
       one.ligatures={ [two]=three }
      end
     end
    end
   end
  end
 end
end
local function enhance_add_ligatures(rawdata)
 addthem(rawdata,afm.helpdata.ligatures)
end
local function enhance_add_extra_kerns(rawdata) 
 local descriptions=rawdata.descriptions
 local resources=rawdata.resources
 local unicodes=resources.unicodes
 local function do_it_left(what)
  if what then
   for unicode,description in next,descriptions do
    local kerns=description.kerns
    if kerns then
     local extrakerns
     for complex,simple in next,what do
      complex=unicodes[complex]
      simple=unicodes[simple]
      if complex and simple then
       local ks=kerns[simple]
       if ks and not kerns[complex] then
        if extrakerns then
         extrakerns[complex]=ks
        else
         extrakerns={ [complex]=ks }
        end
       end
      end
     end
     if extrakerns then
      description.extrakerns=extrakerns
     end
    end
   end
  end
 end
 local function do_it_copy(what)
  if what then
   for complex,simple in next,what do
    complex=unicodes[complex]
    simple=unicodes[simple]
    if complex and simple then
     local complexdescription=descriptions[complex]
     if complexdescription then 
      local simpledescription=descriptions[complex]
      if simpledescription then
       local extrakerns
       local kerns=simpledescription.kerns
       if kerns then
        for unicode,kern in next,kerns do
         if extrakerns then
          extrakerns[unicode]=kern
         else
          extrakerns={ [unicode]=kern }
         end
        end
       end
       local extrakerns=simpledescription.extrakerns
       if extrakerns then
        for unicode,kern in next,extrakerns do
         if extrakerns then
          extrakerns[unicode]=kern
         else
          extrakerns={ [unicode]=kern }
         end
        end
       end
       if extrakerns then
        complexdescription.extrakerns=extrakerns
       end
      end
     end
    end
   end
  end
 end
 do_it_left(afm.helpdata.leftkerned)
 do_it_left(afm.helpdata.bothkerned)
 do_it_copy(afm.helpdata.bothkerned)
 do_it_copy(afm.helpdata.rightkerned)
end
local function adddimensions(data) 
 if data then
  for unicode,description in next,data.descriptions do
   local bb=description.boundingbox
   if bb then
    local ht=bb[4]
    local dp=-bb[2]
    if ht==0 or ht<0 then
    else
     description.height=ht
    end
    if dp==0 or dp<0 then
    else
     description.depth=dp
    end
   end
  end
 end
end
local function copytotfm(data)
 if data and data.descriptions then
  local metadata=data.metadata
  local resources=data.resources
  local properties=derivetable(data.properties)
  local descriptions=derivetable(data.descriptions)
  local goodies=derivetable(data.goodies)
  local characters={}
  local parameters={}
  local unicodes=resources.unicodes
  for unicode,description in next,data.descriptions do 
   characters[unicode]={}
  end
  local filename=constructors.checkedfilename(resources)
  local fontname=metadata.fontname or metadata.fullname
  local fullname=metadata.fullname or metadata.fontname
  local endash=0x2013
  local emdash=0x2014
  local space=0x0020 
  local spacer="space"
  local spaceunits=500
  local monospaced=metadata.monospaced
  local charwidth=metadata.charwidth
  local italicangle=metadata.italicangle
  local charxheight=metadata.xheight and metadata.xheight>0 and metadata.xheight
  properties.monospaced=monospaced
  parameters.italicangle=italicangle
  parameters.charwidth=charwidth
  parameters.charxheight=charxheight
  local d_endash=descriptions[endash]
  local d_emdash=descriptions[emdash]
  local d_space=descriptions[space]
  if not d_space or d_space==0 then
   d_space=d_endash
  end
  if d_space then
   spaceunits,spacer=d_space.width or 0,"space"
  end
  if properties.monospaced then
   if spaceunits==0 and d_emdash then
    spaceunits,spacer=d_emdash.width or 0,"emdash"
   end
  else
   if spaceunits==0 and d_endash then
    spaceunits,spacer=d_emdash.width or 0,"endash"
   end
  end
  if spaceunits==0 and charwidth then
   spaceunits,spacer=charwidth or 0,"charwidth"
  end
  if spaceunits==0 then
   spaceunits=tonumber(spaceunits) or 500
  end
  if spaceunits==0 then
   spaceunits=500
  end
  parameters.slant=0
  parameters.space=spaceunits
  parameters.space_stretch=500
  parameters.space_shrink=333
  parameters.x_height=400
  parameters.quad=1000
  if italicangle and italicangle~=0 then
   parameters.italicangle=italicangle
   parameters.italicfactor=math.cos(math.rad(90+italicangle))
   parameters.slant=- math.tan(italicangle*math.pi/180)
  end
  if monospaced then
   parameters.space_stretch=0
   parameters.space_shrink=0
  elseif afm.syncspace then
   parameters.space_stretch=spaceunits/2
   parameters.space_shrink=spaceunits/3
  end
  parameters.extra_space=parameters.space_shrink
  if charxheight then
   parameters.x_height=charxheight
  else
   local x=0x0078 
   if x then
    local x=descriptions[x]
    if x then
     parameters.x_height=x.height
    end
   end
  end
  if metadata.sup then
   local dummy={ 0,0,0 }
   parameters[ 1]=metadata.designsize  or 0
   parameters[ 2]=metadata.checksum    or 0
   parameters[ 3],
   parameters[ 4],
   parameters[ 5]=unpack(metadata.space   or dummy)
   parameters[ 6]=metadata.quad    or 0
   parameters[ 7]=metadata.extraspace or 0
   parameters[ 8],
   parameters[ 9],
   parameters[10]=unpack(metadata.num  or dummy)
   parameters[11],
   parameters[12]=unpack(metadata.denom   or dummy)
   parameters[13],
   parameters[14],
   parameters[15]=unpack(metadata.sup  or dummy)
   parameters[16],
   parameters[17]=unpack(metadata.sub  or dummy)
   parameters[18]=metadata.supdrop or 0
   parameters[19]=metadata.subdrop or 0
   parameters[20],
   parameters[21]=unpack(metadata.delim   or dummy)
   parameters[22]=metadata.axisheight or 0
  end
  parameters.designsize=(metadata.designsize or 10)*65536
  parameters.ascender=abs(metadata.ascender  or 0)
  parameters.descender=abs(metadata.descender or 0)
  parameters.units=1000
  properties.spacer=spacer
  properties.encodingbytes=2
  properties.format=fonts.formats[filename] or "type1"
  properties.filename=filename
  properties.fontname=fontname
  properties.fullname=fullname
  properties.psname=fullname
  properties.name=filename or fullname or fontname
  properties.private=properties.private or data.private or privateoffset
  if next(characters) then
   return {
    characters=characters,
    descriptions=descriptions,
    parameters=parameters,
    resources=resources,
    properties=properties,
    goodies=goodies,
   }
  end
 end
 return nil
end
function afm.setfeatures(tfmdata,features)
 local okay=constructors.initializefeatures("afm",tfmdata,features,trace_features,report_afm)
 if okay then
  return constructors.collectprocessors("afm",tfmdata,features,trace_features,report_afm)
 else
  return {} 
 end
end
local function addtables(data)
 local resources=data.resources
 local lookuptags=resources.lookuptags
 local unicodes=resources.unicodes
 if not lookuptags then
  lookuptags={}
  resources.lookuptags=lookuptags
 end
 setmetatableindex(lookuptags,function(t,k)
  local v=type(k)=="number" and ("lookup "..k) or k
  t[k]=v
  return v
 end)
 if not unicodes then
  unicodes={}
  resources.unicodes=unicodes
  setmetatableindex(unicodes,function(t,k)
   setmetatableindex(unicodes,nil)
   for u,d in next,data.descriptions do
    local n=d.name
    if n then
     t[n]=u
    end
   end
   return rawget(t,k)
  end)
 end
 constructors.addcoreunicodes(unicodes) 
end
local function afmtotfm(specification)
 local afmname=specification.filename or specification.name
 if specification.forced=="afm" or specification.format=="afm" then 
  if trace_loading then
   report_afm("forcing afm format for %a",afmname)
  end
 else
  local tfmname=findbinfile(afmname,"ofm") or ""
  if tfmname~="" then
   if trace_loading then
    report_afm("fallback from afm to tfm for %a",afmname)
   end
   return 
  end
 end
 if afmname~="" then
  local features=constructors.checkedfeatures("afm",specification.features.normal)
  specification.features.normal=features
  constructors.hashinstance(specification,true)
  specification=definers.resolve(specification) 
  local cache_id=specification.hash
  local tfmdata=containers.read(constructors.cache,cache_id) 
  if not tfmdata then
   local rawdata=afm.load(afmname)
   if rawdata and next(rawdata) then
    addtables(rawdata)
    adddimensions(rawdata)
    tfmdata=copytotfm(rawdata)
    if tfmdata and next(tfmdata) then
     local shared=tfmdata.shared
     if not shared then
      shared={}
      tfmdata.shared=shared
     end
     shared.rawdata=rawdata
     shared.dynamics={}
     tfmdata.changed={}
     shared.features=features
     shared.processes=afm.setfeatures(tfmdata,features)
    end
   elseif trace_loading then
    report_afm("no (valid) afm file found with name %a",afmname)
   end
   tfmdata=containers.write(constructors.cache,cache_id,tfmdata)
  end
  return tfmdata
 end
end
local function read_from_afm(specification)
 local tfmdata=afmtotfm(specification)
 if tfmdata then
  tfmdata.properties.name=specification.name
  tfmdata=constructors.scale(tfmdata,specification)
  local allfeatures=tfmdata.shared.features or specification.features.normal
  constructors.applymanipulators("afm",tfmdata,allfeatures,trace_features,report_afm)
  fonts.loggers.register(tfmdata,'afm',specification)
 end
 return tfmdata
end
registerafmfeature {
 name="mode",
 description="mode",
 initializers={
  base=otf.modeinitializer,
  node=otf.modeinitializer,
 }
}
registerafmfeature {
 name="features",
 description="features",
 default=true,
 initializers={
  node=otf.nodemodeinitializer,
  base=otf.basemodeinitializer,
 },
 processors={
  node=otf.featuresprocessor,
 }
}
fonts.formats.afm="type1"
fonts.formats.pfb="type1"
local function check_afm(specification,fullname)
 local foundname=findbinfile(fullname,'afm') or "" 
 if foundname=="" then
  foundname=fonts.names.getfilename(fullname,"afm") or ""
 end
 if fullname and foundname=="" and afm.autoprefixed then
  local encoding,shortname=match(fullname,"^(.-)%-(.*)$") 
  if encoding and shortname and fonts.encodings.known[encoding] then
   shortname=findbinfile(shortname,'afm') or "" 
   if shortname~="" then
    foundname=shortname
    if trace_defining then
     report_afm("stripping encoding prefix from filename %a",afmname)
    end
   end
  end
 end
 if foundname~="" then
  specification.filename=foundname
  specification.format="afm"
  return read_from_afm(specification)
 end
end
function readers.afm(specification,method)
 local fullname=specification.filename or ""
 local tfmdata=nil
 if fullname=="" then
  local forced=specification.forced or ""
  if forced~="" then
   tfmdata=check_afm(specification,specification.name.."."..forced)
  end
  if not tfmdata then
   local check_tfm=readers.check_tfm
   method=(check_tfm and (method or definers.method or "afm or tfm")) or "afm"
   if method=="tfm" then
    tfmdata=check_tfm(specification,specification.name)
   elseif method=="afm" then
    tfmdata=check_afm(specification,specification.name)
   elseif method=="tfm or afm" then
    tfmdata=check_tfm(specification,specification.name) or check_afm(specification,specification.name)
   else 
    tfmdata=check_afm(specification,specification.name) or check_tfm(specification,specification.name)
   end
  end
 else
  tfmdata=check_afm(specification,fullname)
 end
 return tfmdata
end
function readers.pfb(specification,method) 
 local original=specification.specification
 if trace_defining then
  report_afm("using afm reader for %a",original)
 end
 specification.forced="afm"
 local function swap(name)
  local value=specification[swap]
  if value then
   specification[swap]=gsub("%.pfb",".afm",1)
  end
 end
 swap("filename")
 swap("fullname")
 swap("forcedname")
 swap("specification")
 return readers.afm(specification,method)
end
registerafmenhancer("unify names",enhance_unify_names)
registerafmenhancer("add ligatures",enhance_add_ligatures)
registerafmenhancer("add extra kerns",enhance_add_extra_kerns)
registerafmenhancer("normalize features",enhance_normalize_features)
registerafmenhancer("check extra features",otfenhancers.enhance)
registerafmenhancer("fix names",enhance_fix_names)

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['font-afk']={
 version=1.001,
 comment="companion to font-lib.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files",
 dataonly=true,
}
local allocate=utilities.storage.allocate
fonts.handlers.afm.helpdata={
 ligatures=allocate { 
  ['f']={ 
   { 'f','ff' },
   { 'i','fi' },
   { 'l','fl' },
  },
  ['ff']={
   { 'i','ffi' }
  },
  ['fi']={
   { 'i','fii' }
  },
  ['fl']={
   { 'i','fli' }
  },
  ['s']={
   { 't','st' }
  },
  ['i']={
   { 'j','ij' }
  },
 },
 texligatures=allocate {
  ['quoteleft']={
   { 'quoteleft','quotedblleft' }
  },
  ['quoteright']={
   { 'quoteright','quotedblright' }
  },
  ['hyphen']={
   { 'hyphen','endash' }
  },
  ['endash']={
   { 'hyphen','emdash' }
  }
 },
 leftkerned=allocate {
  AEligature="A",aeligature="a",
  OEligature="O",oeligature="o",
  IJligature="I",ijligature="i",
  AE="A",ae="a",
  OE="O",oe="o",
  IJ="I",ij="i",
  Ssharp="S",ssharp="s",
 },
 rightkerned=allocate {
  AEligature="E",aeligature="e",
  OEligature="E",oeligature="e",
  IJligature="J",ijligature="j",
  AE="E",ae="e",
  OE="E",oe="e",
  IJ="J",ij="j",
  Ssharp="S",ssharp="s",
 },
 bothkerned=allocate {
  Acircumflex="A",acircumflex="a",
  Ccircumflex="C",ccircumflex="c",
  Ecircumflex="E",ecircumflex="e",
  Gcircumflex="G",gcircumflex="g",
  Hcircumflex="H",hcircumflex="h",
  Icircumflex="I",icircumflex="i",
  Jcircumflex="J",jcircumflex="j",
  Ocircumflex="O",ocircumflex="o",
  Scircumflex="S",scircumflex="s",
  Ucircumflex="U",ucircumflex="u",
  Wcircumflex="W",wcircumflex="w",
  Ycircumflex="Y",ycircumflex="y",
  Agrave="A",agrave="a",
  Egrave="E",egrave="e",
  Igrave="I",igrave="i",
  Ograve="O",ograve="o",
  Ugrave="U",ugrave="u",
  Ygrave="Y",ygrave="y",
  Atilde="A",atilde="a",
  Itilde="I",itilde="i",
  Otilde="O",otilde="o",
  Utilde="U",utilde="u",
  Ntilde="N",ntilde="n",
  Adiaeresis="A",adiaeresis="a",Adieresis="A",adieresis="a",
  Ediaeresis="E",ediaeresis="e",Edieresis="E",edieresis="e",
  Idiaeresis="I",idiaeresis="i",Idieresis="I",idieresis="i",
  Odiaeresis="O",odiaeresis="o",Odieresis="O",odieresis="o",
  Udiaeresis="U",udiaeresis="u",Udieresis="U",udieresis="u",
  Ydiaeresis="Y",ydiaeresis="y",Ydieresis="Y",ydieresis="y",
  Aacute="A",aacute="a",
  Cacute="C",cacute="c",
  Eacute="E",eacute="e",
  Iacute="I",iacute="i",
  Lacute="L",lacute="l",
  Nacute="N",nacute="n",
  Oacute="O",oacute="o",
  Racute="R",racute="r",
  Sacute="S",sacute="s",
  Uacute="U",uacute="u",
  Yacute="Y",yacute="y",
  Zacute="Z",zacute="z",
  Dstroke="D",dstroke="d",
  Hstroke="H",hstroke="h",
  Tstroke="T",tstroke="t",
  Cdotaccent="C",cdotaccent="c",
  Edotaccent="E",edotaccent="e",
  Gdotaccent="G",gdotaccent="g",
  Idotaccent="I",idotaccent="i",
  Zdotaccent="Z",zdotaccent="z",
  Amacron="A",amacron="a",
  Emacron="E",emacron="e",
  Imacron="I",imacron="i",
  Omacron="O",omacron="o",
  Umacron="U",umacron="u",
  Ccedilla="C",ccedilla="c",
  Kcedilla="K",kcedilla="k",
  Lcedilla="L",lcedilla="l",
  Ncedilla="N",ncedilla="n",
  Rcedilla="R",rcedilla="r",
  Scedilla="S",scedilla="s",
  Tcedilla="T",tcedilla="t",
  Ohungarumlaut="O",ohungarumlaut="o",
  Uhungarumlaut="U",uhungarumlaut="u",
  Aogonek="A",aogonek="a",
  Eogonek="E",eogonek="e",
  Iogonek="I",iogonek="i",
  Uogonek="U",uogonek="u",
  Aring="A",aring="a",
  Uring="U",uring="u",
  Abreve="A",abreve="a",
  Ebreve="E",ebreve="e",
  Gbreve="G",gbreve="g",
  Ibreve="I",ibreve="i",
  Obreve="O",obreve="o",
  Ubreve="U",ubreve="u",
  Ccaron="C",ccaron="c",
  Dcaron="D",dcaron="d",
  Ecaron="E",ecaron="e",
  Lcaron="L",lcaron="l",
  Ncaron="N",ncaron="n",
  Rcaron="R",rcaron="r",
  Scaron="S",scaron="s",
  Tcaron="T",tcaron="t",
  Zcaron="Z",zcaron="z",
  dotlessI="I",dotlessi="i",
  dotlessJ="J",dotlessj="j",
  AEligature="AE",aeligature="ae",AE="AE",ae="ae",
  OEligature="OE",oeligature="oe",OE="OE",oe="oe",
  IJligature="IJ",ijligature="ij",IJ="IJ",ij="ij",
  Lstroke="L",lstroke="l",Lslash="L",lslash="l",
  Ostroke="O",ostroke="o",Oslash="O",oslash="o",
  Ssharp="SS",ssharp="ss",
  Aumlaut="A",aumlaut="a",
  Eumlaut="E",eumlaut="e",
  Iumlaut="I",iumlaut="i",
  Oumlaut="O",oumlaut="o",
  Uumlaut="U",uumlaut="u",
 }
}

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['luatex-fonts-tfm']={
 version=1.001,
 comment="companion to font-ini.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
local next,type=next,type
local match,format=string.match,string.format
local concat,sortedhash=table.concat,table.sortedhash
local idiv=number.idiv
local trace_defining=false  trackers.register("fonts.defining",function(v) trace_defining=v end)
local trace_features=false  trackers.register("tfm.features",function(v) trace_features=v end)
local report_defining=logs.reporter("fonts","defining")
local report_tfm=logs.reporter("fonts","tfm loading")
local findbinfile=resolvers.findbinfile
local setmetatableindex=table.setmetatableindex
local fonts=fonts
local handlers=fonts.handlers
local helpers=fonts.helpers
local readers=fonts.readers
local constructors=fonts.constructors
local encodings=fonts.encodings
local tfm=constructors.handlers.tfm
tfm.version=1.000
tfm.maxnestingdepth=5
tfm.maxnestingsize=65536*1024
local otf=fonts.handlers.otf
local otfenhancers=otf.enhancers
local tfmfeatures=constructors.features.tfm
local registertfmfeature=tfmfeatures.register
local tfmenhancers=constructors.enhancers.tfm
local registertfmenhancer=tfmenhancers.register
local charcommand=helpers.commands.char
constructors.resolvevirtualtoo=false 
fonts.formats.tfm="type1" 
fonts.formats.ofm="type1" 
function tfm.setfeatures(tfmdata,features)
 local okay=constructors.initializefeatures("tfm",tfmdata,features,trace_features,report_tfm)
 if okay then
  return constructors.collectprocessors("tfm",tfmdata,features,trace_features,report_tfm)
 else
  return {} 
 end
end
local depth={} 
local loadtfm=font.read_tfm
local loadvf=font.read_vf
local function read_from_tfm(specification)
 local filename=specification.filename
 local size=specification.size
 depth[filename]=(depth[filename] or 0)+1
 if trace_defining then
  report_defining("loading tfm file %a at size %s",filename,size)
 end
 local tfmdata=loadtfm(filename,size)
 if tfmdata then
  local features=specification.features and specification.features.normal or {}
  local features=constructors.checkedfeatures("tfm",features)
  specification.features.normal=features
  local newtfmdata=(depth[filename]==1) and tfm.reencode(tfmdata,specification)
  if newtfmdata then
    tfmdata=newtfmdata
  end
  local resources=tfmdata.resources  or {}
  local properties=tfmdata.properties or {}
  local parameters=tfmdata.parameters or {}
  local shared=tfmdata.shared  or {}
  shared.features=features
  shared.resources=resources
  properties.name=tfmdata.name     
  properties.fontname=tfmdata.fontname    
  properties.psname=tfmdata.psname   
  properties.fullname=tfmdata.fullname    
  properties.filename=specification.filename 
  properties.format=tfmdata.format or fonts.formats.tfm 
  properties.usedbitmap=tfmdata.usedbitmap
  tfmdata.properties=properties
  tfmdata.resources=resources
  tfmdata.parameters=parameters
  tfmdata.shared=shared
  shared.rawdata={ resources=resources }
  shared.features=features
  if newtfmdata then
   if not resources.marks then
    resources.marks={}
   end
   if not resources.sequences then
    resources.sequences={}
   end
   if not resources.features then
    resources.features={
     gsub={},
     gpos={},
    }
   end
   if not tfmdata.changed then
    tfmdata.changed={}
   end
   if not tfmdata.descriptions then
    tfmdata.descriptions=tfmdata.characters
   end
   otf.readers.addunicodetable(tfmdata)
   tfmenhancers.apply(tfmdata,filename)
   constructors.applymanipulators("tfm",tfmdata,features,trace_features,report_tfm)
   otf.readers.unifymissing(tfmdata)
   fonts.mappings.addtounicode(tfmdata,filename)
   tfmdata.tounicode=1
   local tounicode=fonts.mappings.tounicode
   for unicode,v in next,tfmdata.characters do
    local u=v.unicode
    if u then
     v.tounicode=tounicode(u)
    end
   end
   if tfmdata.usedbitmap then
    tfm.addtounicode(tfmdata)
   end
  end
  shared.processes=next(features) and tfm.setfeatures(tfmdata,features) or nil
  if size<0 then
   size=idiv(65536*-size,100)
  end
  parameters.factor=1  
  parameters.units=1000  
  parameters.size=size
  parameters.slant=parameters.slant    or parameters[1] or 0
  parameters.space=parameters.space    or parameters[2] or 0
  parameters.space_stretch=parameters.space_stretch  or parameters[3] or 0
  parameters.space_shrink=parameters.space_shrink   or parameters[4] or 0
  parameters.x_height=parameters.x_height    or parameters[5] or 0
  parameters.quad=parameters.quad     or parameters[6] or 0
  parameters.extra_space=parameters.extra_space or parameters[7] or 0
  constructors.enhanceparameters(parameters)
  properties.private=properties.private or tfmdata.private or privateoffset
  if newtfmdata then
  elseif constructors.resolvevirtualtoo then
   fonts.loggers.register(tfmdata,file.suffix(filename),specification) 
   local vfname=findbinfile(specification.name,'ovf')
   if vfname and vfname~="" then
    local vfdata=loadvf(vfname,size)
    if vfdata then
     local chars=tfmdata.characters
     for k,v in next,vfdata.characters do
      chars[k].commands=v.commands
     end
     properties.virtualized=true
     tfmdata.fonts=vfdata.fonts
     tfmdata.type="virtual" 
     local fontlist=vfdata.fonts
     local name=file.nameonly(filename)
     for i=1,#fontlist do
      local n=fontlist[i].name
      local s=fontlist[i].size
      local d=depth[filename]
      s=constructors.scaled(s,vfdata.designsize)
      if d>tfm.maxnestingdepth then
       report_defining("too deeply nested virtual font %a with size %a, max nesting depth %s",n,s,tfm.maxnestingdepth)
       fontlist[i]={ id=0 }
      elseif (d>1) and (s>tfm.maxnestingsize) then
       report_defining("virtual font %a exceeds size %s",n,s)
       fontlist[i]={ id=0 }
      else
       local t,id=constructors.readanddefine(n,s)
       fontlist[i]={ id=id }
      end
     end
    end
   end
  end
  properties.haskerns=true
  properties.hasligatures=true
  properties.hasitalics=true
  resources.unicodes={}
  resources.lookuptags={}
  depth[filename]=depth[filename]-1
  return tfmdata
 else
  depth[filename]=depth[filename]-1
 end
end
local function check_tfm(specification,fullname) 
 local foundname=findbinfile(fullname,'tfm') or ""
 if foundname=="" then
  foundname=findbinfile(fullname,'ofm') or "" 
 end
 if foundname=="" then
  foundname=fonts.names.getfilename(fullname,"tfm") or ""
 end
 if foundname~="" then
  specification.filename=foundname
  specification.format="ofm"
  return read_from_tfm(specification)
 elseif trace_defining then
  report_defining("loading tfm with name %a fails",specification.name)
 end
end
readers.check_tfm=check_tfm
function readers.tfm(specification)
 local fullname=specification.filename or ""
 if fullname=="" then
  local forced=specification.forced or ""
  if forced~="" then
   fullname=specification.name.."."..forced
  else
   fullname=specification.name
  end
 end
 return check_tfm(specification,fullname)
end
readers.ofm=readers.tfm
do
 local outfiles={}
 local tfmcache=table.setmetatableindex(function(t,tfmdata)
  local id=font.define(tfmdata)
  t[tfmdata]=id
  return id
 end)
 local encdone=table.setmetatableindex("table")
 function tfm.reencode(tfmdata,specification)
  local features=specification.features
  if not features then
   return
  end
  local features=features.normal
  if not features then
   return
  end
  local tfmfile=file.basename(tfmdata.name)
  local encfile=features.reencode 
  local pfbfile=features.pfbfile  
  local bitmap=features.bitmap   
  if not encfile then
   return
  end
  local pfbfile=outfiles[tfmfile]
  if pfbfile==nil then
   if bitmap then
    pfbfile=false
   elseif type(pfbfile)~="string" then
    pfbfile=tfmfile
   end
   if type(pfbfile)=="string" then
    pfbfile=file.addsuffix(pfbfile,"pfb")
    report_tfm("using type1 shapes from %a for %a",pfbfile,tfmfile)
   else
    report_tfm("using bitmap shapes for %a",tfmfile)
    pfbfile=false 
   end
   outfiles[tfmfile]=pfbfile
  end
  local encoding=false
  local vector=false
  if type(pfbfile)=="string" then
   local pfb=constructors.handlers.pfb
   if pfb and pfb.loadvector then
    local v,e=pfb.loadvector(pfbfile)
    if v then
     vector=v
    end
    if e then
     encoding=e
    end
   end
  end
  if type(encfile)=="string" and encfile~="auto" then
   encoding=fonts.encodings.load(file.addsuffix(encfile,"enc"))
   if encoding then
    encoding=encoding.vector
   end
  end
  if not encoding then
   report_tfm("bad encoding for %a, quitting",tfmfile)
   return
  end
  local unicoding=fonts.encodings.agl and fonts.encodings.agl.unicodes
  local virtualid=tfmcache[tfmdata]
  local tfmdata=table.copy(tfmdata) 
  local characters={}
  local originals=tfmdata.characters
  local indices={}
  local parentfont={ "font",1 }
  local private=tfmdata.privateoffset or constructors.privateoffset
  local reported=encdone[tfmfile][encfile]
  local backmap=vector and table.swapped(vector)
  local done={} 
  for index,name in sortedhash(encoding) do 
   local unicode=unicoding[name]
   local original=originals[index]
   if original then
    if unicode then
     original.unicode=unicode
    else
     unicode=private
     private=private+1
     if not reported then
      report_tfm("glyph %a in font %a with encoding %a gets unicode %U",name,tfmfile,encfile,unicode)
     end
    end
    characters[unicode]=original
    indices[index]=unicode
    original.name=name 
    if backmap then
     original.index=backmap[name]
    else 
     original.commands={ parentfont,charcommand[index] } 
     original.oindex=index
    end
    done[name]=true
   elseif not done[name] then
    report_tfm("bad index %a in font %a with name %a",index,tfmfile,name)
   end
  end
  encdone[tfmfile][encfile]=true
  for k,v in next,characters do
   local kerns=v.kerns
   if kerns then
    local t={}
    for k,v in next,kerns do
     local i=indices[k]
     if i then
      t[i]=v
     end
    end
    v.kerns=next(t) and t or nil
   end
   local ligatures=v.ligatures
   if ligatures then
    local t={}
    for k,v in next,ligatures do
     local i=indices[k]
     if i then
      t[i]=v
      v.char=indices[v.char]
     end
    end
    v.ligatures=next(t) and t or nil
   end
  end
  tfmdata.fonts={ { id=virtualid } }
  tfmdata.characters=characters
  tfmdata.fullname=tfmdata.fullname or tfmdata.name
  tfmdata.psname=file.nameonly(pfbfile or tfmdata.name)
  tfmdata.filename=pfbfile
  tfmdata.encodingbytes=2
  tfmdata.format="type1"
  tfmdata.tounicode=1
  tfmdata.embedding="subset"
  tfmdata.usedbitmap=bitmap and virtualid
  tfmdata.private=private
  return tfmdata
 end
end
do
 local template=[[
/CIDInit /ProcSet findresource begin
  12 dict begin
  begincmap
    /CIDSystemInfo << /Registry (TeX) /Ordering (bitmap-%s) /Supplement 0 >> def
    /CMapName /TeX-bitmap-%s def
    /CMapType 2 def
    1 begincodespacerange
      <00> <FF>
    endcodespacerange
    %s beginbfchar
%s
    endbfchar
  endcmap
CMapName currentdict /CMap defineresource pop end
end
end
]]
 local flushstreamobject=lpdf and lpdf.flushstreamobject 
 local setfontattributes=lpdf and lpdf.setfontattributes 
 if not flushstreamobject then
  flushstreamobject=function(data)
   return pdf.obj { immediate=true,type="stream",string=data } 
  end
 end
 if not setfontattributes then
  setfontattributes=function(id,data)
   return pdf.setfontattributes(id,data) 
  end
 end
 function tfm.addtounicode(tfmdata)
  local id=tfmdata.usedbitmap
  local map={}
  local char={} 
  for k,v in next,tfmdata.characters do
   local index=v.oindex
   local tounicode=v.tounicode
   if index and tounicode then
    map[index]=tounicode
   end
  end
  for k,v in sortedhash(map) do
   char[#char+1]=format("<%02X> <%s>",k,v)
  end
  char=concat(char,"\n")
  local stream=format(template,id,id,#char,char)
  local reference=flushstreamobject(stream,nil,true)
  setfontattributes(id,format("/ToUnicode %i 0 R",reference))
 end
end
do
 local everywhere={ ["*"]={ ["*"]=true } } 
 local noflags={ false,false,false,false }
 local function enhance_normalize_features(data)
  local ligatures=setmetatableindex("table")
  local kerns=setmetatableindex("table")
  local characters=data.characters
  for u,c in next,characters do
   local l=c.ligatures
   local k=c.kerns
   if l then
    ligatures[u]=l
    for u,v in next,l do
     l[u]={ ligature=v.char }
    end
    c.ligatures=nil
   end
   if k then
    kerns[u]=k
    for u,v in next,k do
     k[u]=v 
    end
    c.kerns=nil
   end
  end
  for u,l in next,ligatures do
   for k,v in next,l do
    local vl=v.ligature
    local dl=ligatures[vl]
    if dl then
     for kk,vv in next,dl do
      v[kk]=vv 
     end
    end
   end
  end
  local features={
   gpos={},
   gsub={},
  }
  local sequences={
  }
  if next(ligatures) then
   features.gsub.liga=everywhere
   data.properties.hasligatures=true
   sequences[#sequences+1]={
    features={
     liga=everywhere,
    },
    flags=noflags,
    name="s_s_0",
    nofsteps=1,
    order={ "liga" },
    type="gsub_ligature",
    steps={
     {
      coverage=ligatures,
     },
    },
   }
  end
  if next(kerns) then
   features.gpos.kern=everywhere
   data.properties.haskerns=true
   sequences[#sequences+1]={
    features={
     kern=everywhere,
    },
    flags=noflags,
    name="p_s_0",
    nofsteps=1,
    order={ "kern" },
    type="gpos_pair",
    steps={
     {
      format="kern",
      coverage=kerns,
     },
    },
   }
  end
  data.resources.features=features
  data.resources.sequences=sequences
  data.shared.resources=data.shared.resources or resources
 end
 registertfmenhancer("normalize features",enhance_normalize_features)
 registertfmenhancer("check extra features",otfenhancers.enhance)
end
registertfmfeature {
 name="mode",
 description="mode",
 initializers={
  base=otf.modeinitializer,
  node=otf.modeinitializer,
 }
}
registertfmfeature {
 name="features",
 description="features",
 default=true,
 initializers={
  base=otf.basemodeinitializer,
  node=otf.nodemodeinitializer,
 },
 processors={
  node=otf.featuresprocessor,
 }
}

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['font-lua']={
 version=1.001,
 comment="companion to font-ini.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
local trace_defining=false  trackers.register("fonts.defining",function(v) trace_defining=v end)
local report_lua=logs.reporter("fonts","lua loading")
local fonts=fonts
local readers=fonts.readers
fonts.formats.lua="lua"
local function check_lua(specification,fullname)
 local fullname=resolvers.findfile(fullname) or ""
 if fullname~="" then
  local loader=loadfile(fullname)
  loader=loader and loader()
  return loader and loader(specification)
 end
end
readers.check_lua=check_lua
function readers.lua(specification)
 local original=specification.specification
 if trace_defining then
  report_lua("using lua reader for %a",original)
 end
 local fullname=specification.filename or ""
 if fullname=="" then
  local forced=specification.forced or ""
  if forced~="" then
   fullname=specification.name.."."..forced
  else
   fullname=specification.name
  end
 end
 return check_lua(specification,fullname)
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['font-def']={
 version=1.001,
 comment="companion to font-ini.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
local lower,gsub=string.lower,string.gsub
local tostring,next=tostring,next
local lpegmatch=lpeg.match
local suffixonly,removesuffix,basename=file.suffix,file.removesuffix,file.basename
local formatters=string.formatters
local sortedhash,sortedkeys=table.sortedhash,table.sortedkeys
local allocate=utilities.storage.allocate
local trace_defining=false  trackers  .register("fonts.defining",function(v) trace_defining=v end)
local directive_embedall=false  directives.register("fonts.embedall",function(v) directive_embedall=v end)
trackers.register("fonts.loading","fonts.defining","otf.loading","afm.loading","tfm.loading")
local report_defining=logs.reporter("fonts","defining")
local fonts=fonts
local fontdata=fonts.hashes.identifiers
local readers=fonts.readers
local definers=fonts.definers
local specifiers=fonts.specifiers
local constructors=fonts.constructors
local fontgoodies=fonts.goodies
readers.sequence=allocate { 'otf','ttf','afm','tfm','lua' } 
local variants=allocate()
specifiers.variants=variants
definers.methods=definers.methods or {}
local internalized=allocate() 
local loadedfonts=constructors.loadedfonts
local designsizes=constructors.designsizes
local resolvefile=fontgoodies and fontgoodies.filenames and fontgoodies.filenames.resolve or function(s) return s end
local function makespecification(specification,lookup,name,sub,method,detail,size)
 size=size or 655360
 if not lookup or lookup=="" then
  lookup=definers.defaultlookup
 end
 if trace_defining then
  report_defining("specification %a, lookup %a, name %a, sub %a, method %a, detail %a",
   specification,lookup,name,sub,method,detail)
 end
 local t={
  lookup=lookup,
  specification=specification,
  size=size,
  name=name,
  sub=sub,
  method=method,
  detail=detail,
  resolved="",
  forced="",
  features={},
 }
 return t
end
definers.makespecification=makespecification
if context then

--removed

end
definers.resolvers=definers.resolvers or {}
local resolvers=definers.resolvers
function resolvers.file(specification)
 local name=resolvefile(specification.name) 
 local suffix=lower(suffixonly(name))
 if fonts.formats[suffix] then
  specification.forced=suffix
  specification.forcedname=name
  specification.name=removesuffix(name)
 else
  specification.name=name 
 end
end
function resolvers.name(specification)
 local resolve=fonts.names.resolve
 if resolve then
  local resolved,sub,subindex,instance=resolve(specification.name,specification.sub,specification) 
  if resolved then
   specification.resolved=resolved
   specification.sub=sub
   specification.subindex=subindex
   if instance then
    specification.instance=instance
    local features=specification.features
    if not features then
     features={}
     specification.features=features
    end
    local normal=features.normal
    if not normal then
     normal={}
     features.normal=normal
    end
    normal.instance=instance
   end
   local suffix=lower(suffixonly(resolved))
   if fonts.formats[suffix] then
    specification.forced=suffix
    specification.forcedname=resolved
    specification.name=removesuffix(resolved)
   else
    specification.name=resolved
   end
  end
 else
  resolvers.file(specification)
 end
end
function resolvers.spec(specification)
 local resolvespec=fonts.names.resolvespec
 if resolvespec then
  local resolved,sub,subindex=resolvespec(specification.name,specification.sub,specification) 
  if resolved then
   specification.resolved=resolved
   specification.sub=sub
   specification.subindex=subindex
   specification.forced=lower(suffixonly(resolved))
   specification.forcedname=resolved
   specification.name=removesuffix(resolved)
  end
 else
  resolvers.name(specification)
 end
end
function definers.resolve(specification)
 if not specification.resolved or specification.resolved=="" then 
  local r=resolvers[specification.lookup]
  if r then
   r(specification)
  end
 end
 if specification.forced=="" then
  specification.forced=nil
  specification.forcedname=nil
 end
 specification.hash=lower(specification.name..' @ '..constructors.hashfeatures(specification))
 if specification.sub and specification.sub~="" then
  specification.hash=specification.sub..' @ '..specification.hash
 end
 return specification
end
function definers.applypostprocessors(tfmdata)
 local postprocessors=tfmdata.postprocessors
 if postprocessors then
  local properties=tfmdata.properties
  for i=1,#postprocessors do
   local extrahash=postprocessors[i](tfmdata) 
   if type(extrahash)=="string" and extrahash~="" then
    extrahash=gsub(lower(extrahash),"[^a-z]","-")
    properties.fullname=formatters["%s-%s"](properties.fullname,extrahash)
   end
  end
 end
 return tfmdata
end
local function checkembedding(tfmdata)
 local properties=tfmdata.properties
 local embedding
 if directive_embedall then
  embedding="full"
 elseif properties and properties.filename and constructors.dontembed[properties.filename] then
  embedding="no"
 else
  embedding="subset"
 end
 if properties then
  properties.embedding=embedding
 else
  tfmdata.properties={ embedding=embedding }
 end
 tfmdata.embedding=embedding
end
local function checkfeatures(tfmdata)
 local resources=tfmdata.resources
 local shared=tfmdata.shared
 if resources and shared then
  local features=resources.features
  local usedfeatures=shared.features
  if features and usedfeatures then
   local usedlanguage=usedfeatures.language or "dflt"
   local usedscript=usedfeatures.script or "dflt"
   local function check(what)
    if what then
     local foundlanguages={}
     for feature,scripts in next,what do
      if usedscript=="auto" or scripts["*"] then
      elseif not scripts[usedscript] then
      else
       for script,languages in next,scripts do
        if languages["*"] then
        elseif context and not languages[usedlanguage] then
         report_defining("font %!font:name!, feature %a, script %a, no language %a",
          tfmdata,feature,script,usedlanguage)
        end
       end
      end
      for script,languages in next,scripts do
       for language in next,languages do
        foundlanguages[language]=true
       end
      end
     end
     if false then
      foundlanguages["*"]=nil
      foundlanguages=sortedkeys(foundlanguages)
      for feature,scripts in sortedhash(what) do
       for script,languages in next,scripts do
        if not languages["*"] then
         for i=1,#foundlanguages do
          local language=foundlanguages[i]
          if context and not languages[language] then
           report_defining("font %!font:name!, feature %a, script %a, no language %a",
            tfmdata,feature,script,language)
          end
         end
        end
       end
      end
     end
    end
   end
   check(features.gsub)
   check(features.gpos)
  end
 end
end
function definers.loadfont(specification)
 local hash=constructors.hashinstance(specification)
 local tfmdata=loadedfonts[hash] 
 if not tfmdata then
  local forced=specification.forced or ""
  if forced~="" then
   local reader=readers[lower(forced)] 
   tfmdata=reader and reader(specification)
   if not tfmdata then
    report_defining("forced type %a of %a not found",forced,specification.name)
   end
  else
   local sequence=readers.sequence 
   for s=1,#sequence do
    local reader=sequence[s]
    if readers[reader] then 
     if trace_defining then
      report_defining("trying (reader sequence driven) type %a for %a with file %a",reader,specification.name,specification.filename)
     end
     tfmdata=readers[reader](specification)
     if tfmdata then
      break
     else
      specification.filename=nil
     end
    end
   end
  end
  if tfmdata then
   tfmdata=definers.applypostprocessors(tfmdata)
   checkembedding(tfmdata) 
   loadedfonts[hash]=tfmdata
   designsizes[specification.hash]=tfmdata.parameters.designsize
   checkfeatures(tfmdata)
  end
 end
 if not tfmdata then
  report_defining("font with asked name %a is not found using lookup %a",specification.name,specification.lookup)
 end
 return tfmdata
end
function constructors.readanddefine(name,size) 
 local specification=definers.analyze(name,size)
 local method=specification.method
 if method and variants[method] then
  specification=variants[method](specification)
 end
 specification=definers.resolve(specification)
 local hash=constructors.hashinstance(specification)
 local id=definers.registered(hash)
 if not id then
  local tfmdata=definers.loadfont(specification)
  if tfmdata then
   tfmdata.properties.hash=hash
   id=font.define(tfmdata)
   definers.register(tfmdata,id)
  else
   id=0  
  end
 end
 return fontdata[id],id
end
function definers.registered(hash)
 local id=internalized[hash]
 return id,id and fontdata[id]
end
function definers.register(tfmdata,id)
 if tfmdata and id then
  local hash=tfmdata.properties.hash
  if not hash then
   report_defining("registering font, id %a, name %a, invalid hash",id,tfmdata.properties.filename or "?")
  elseif not internalized[hash] then
   internalized[hash]=id
   if trace_defining then
    report_defining("registering font, id %s, hash %a",id,hash)
   end
   fontdata[id]=tfmdata
  end
 end
end
function definers.read(specification,size,id) 
 statistics.starttiming(fonts)
 if type(specification)=="string" then
  specification=definers.analyze(specification,size)
 end
 local method=specification.method
 if method and variants[method] then
  specification=variants[method](specification)
 end
 specification=definers.resolve(specification)
 local hash=constructors.hashinstance(specification)
 local tfmdata=definers.registered(hash) 
 if tfmdata then
  if trace_defining then
   report_defining("already hashed: %s",hash)
  end
 else
  tfmdata=definers.loadfont(specification) 
  if tfmdata then
   if trace_defining then
    report_defining("loaded and hashed: %s",hash)
   end
   tfmdata.properties.hash=hash
   if id then
    definers.register(tfmdata,id)
   end
  else
   if trace_defining then
    report_defining("not loaded and hashed: %s",hash)
   end
  end
 end
 if not tfmdata then 
  report_defining("unknown font %a, loading aborted",specification.name)
 elseif trace_defining and type(tfmdata)=="table" then
  local properties=tfmdata.properties or {}
  local parameters=tfmdata.parameters or {}
  report_defining("using %a font with id %a, name %a, size %a, bytes %a, encoding %a, fullname %a, filename %a",
   properties.format or "unknown",id or "-",properties.name,parameters.size,properties.encodingbytes,
   properties.encodingname,properties.fullname,basename(properties.filename))
 end
 statistics.stoptiming(fonts)
 return tfmdata
end
function font.getfont(id)
 return fontdata[id] 
end
if not context then
 callbacks.register('define_font',definers.read,"definition of fonts (tfmdata preparation)")
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['luatex-fonts-def']={
 version=1.001,
 comment="companion to luatex-*.tex",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
if context then
--removed

end
local fonts=fonts
fonts.constructors.namemode="specification"
function fonts.definers.getspecification(str)
 return "",str,"",":",str
end
local list={} 
local function issome () list.lookup='name'    end 
local function isfile () list.lookup='file'    end
local function isname () list.lookup='name'    end
local function thename(s)   list.name=s      end
local function issub  (v)   list.sub=v      end
local function iscrap (s)   list.crap=string.lower(s) end
local function iskey  (k,v) list[k]=v      end
local function istrue (s)   list[s]=true   end
local function isfalse(s)   list[s]=false     end
local P,S,R,C,Cs=lpeg.P,lpeg.S,lpeg.R,lpeg.C,lpeg.Cs
local spaces=P(" ")^0
local namespec=Cs((P("{")/"")*(1-S("}"))^0*(P("}")/"")+(1-S("/:("))^0)
local crapspec=spaces*P("/")*(((1-P(":"))^0)/iscrap)*spaces
local filename_1=P("file:")/isfile*(namespec/thename)
local filename_2=P("[")*P(true)/isfile*(((1-P("]"))^0)/thename)*P("]")
local fontname_1=P("name:")/isname*(namespec/thename)
local fontname_2=P(true)/issome*(namespec/thename)
local sometext=R("az","AZ","09")^1
local somekey=R("az","AZ","09")^1
local somevalue=(P("{")/"")*(1-P("}"))^0*(P("}")/"")+(1-S(";"))^1
local truevalue=P("+")*spaces*(sometext/istrue)
local falsevalue=P("-")*spaces*(sometext/isfalse)
local keyvalue=(C(somekey)*spaces*P("=")*spaces*C(somevalue))/iskey
local somevalue=sometext/istrue
local subvalue=P("(")*(C(P(1-S("()"))^1)/issub)*P(")") 
local option=spaces*(keyvalue+falsevalue+truevalue+somevalue)*spaces
local options=P(":")*spaces*(P(";")^0*option)^0
local pattern=(filename_1+filename_2+fontname_1+fontname_2)*subvalue^0*crapspec^0*options^0
function fonts.definers.analyze(str,size)
 local specification=fonts.definers.makespecification(str,nil,nil,nil,":",nil,size)
 list={}
 lpeg.match(pattern,str)
 list.crap=nil
 if list.name then
  specification.name=list.name
  list.name=nil
 end
 if list.lookup then
  specification.lookup=list.lookup
  list.lookup=nil
 end
 if list.sub then
  specification.sub=list.sub
  list.sub=nil
 end
 specification.features.normal=fonts.handlers.otf.features.normalize(list)
 list=nil
 return specification
end
function fonts.definers.applypostprocessors(tfmdata)
 local postprocessors=tfmdata.postprocessors
 if postprocessors then
  for i=1,#postprocessors do
   local extrahash=postprocessors[i](tfmdata) 
   if type(extrahash)=="string" and extrahash~="" then
    extrahash=string.gsub(lower(extrahash),"[^a-z]","-")
    tfmdata.properties.fullname=format("%s-%s",tfmdata.properties.fullname,extrahash)
   end
  end
 end
 return tfmdata
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['luatex-fonts-ext']={
 version=1.001,
 comment="companion to luatex-*.tex",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
if context then
--removed

end
local byte=string.byte
local fonts=fonts
local handlers=fonts.handlers
local otf=handlers.otf
local afm=handlers.afm
local registerotffeature=otf.features.register
local registerafmfeature=afm.features.register
function fonts.loggers.onetimemessage() end
fonts.protrusions=fonts.protrusions  or {}
fonts.protrusions.setups=fonts.protrusions.setups or {}
local setups=fonts.protrusions.setups
setups['default']={ 
 factor=1,
 left=1,
 right=1,
 [0x002C]={ 0,1 },
 [0x002E]={ 0,1 },
 [0x003A]={ 0,1 },
 [0x003B]={ 0,1 },
 [0x002D]={ 0,1 },
 [0x2013]={ 0,0.50 },
 [0x2014]={ 0,0.33 },
 [0x3001]={ 0,1 },
 [0x3002]={ 0,1 },
 [0x060C]={ 0,1 },
 [0x061B]={ 0,1 },
 [0x06D4]={ 0,1 },
}
local function initializeprotrusion(tfmdata,value)
 if value then
  local setup=setups[value]
  if setup then
   local factor,left,right=setup.factor or 1,setup.left or 1,setup.right or 1
   local emwidth=tfmdata.parameters.quad
   tfmdata.parameters.protrusion={
    auto=true,
   }
   for i,chr in next,tfmdata.characters do
    local v,pl,pr=setup[i],nil,nil
    if v then
     pl,pr=v[1],v[2]
    end
    if pl and pl~=0 then chr.left_protruding=left*pl*factor end
    if pr and pr~=0 then chr.right_protruding=right*pr*factor end
   end
  end
 end
end
local specification={
 name="protrusion",
 description="shift characters into the left and or right margin",
 initializers={
  base=initializeprotrusion,
  node=initializeprotrusion,
 }
}
registerotffeature(specification)
registerafmfeature(specification)
fonts.expansions=fonts.expansions  or {}
fonts.expansions.setups=fonts.expansions.setups or {}
local setups=fonts.expansions.setups
setups['default']={ 
 stretch=2,
 shrink=2,
 step=.5,
 factor=1,
 [byte('A')]=0.5,[byte('B')]=0.7,[byte('C')]=0.7,[byte('D')]=0.5,[byte('E')]=0.7,
 [byte('F')]=0.7,[byte('G')]=0.5,[byte('H')]=0.7,[byte('K')]=0.7,[byte('M')]=0.7,
 [byte('N')]=0.7,[byte('O')]=0.5,[byte('P')]=0.7,[byte('Q')]=0.5,[byte('R')]=0.7,
 [byte('S')]=0.7,[byte('U')]=0.7,[byte('W')]=0.7,[byte('Z')]=0.7,
 [byte('a')]=0.7,[byte('b')]=0.7,[byte('c')]=0.7,[byte('d')]=0.7,[byte('e')]=0.7,
 [byte('g')]=0.7,[byte('h')]=0.7,[byte('k')]=0.7,[byte('m')]=0.7,[byte('n')]=0.7,
 [byte('o')]=0.7,[byte('p')]=0.7,[byte('q')]=0.7,[byte('s')]=0.7,[byte('u')]=0.7,
 [byte('w')]=0.7,[byte('z')]=0.7,
 [byte('2')]=0.7,[byte('3')]=0.7,[byte('6')]=0.7,[byte('8')]=0.7,[byte('9')]=0.7,
}
local function initializeexpansion(tfmdata,value)
 if value then
  local setup=setups[value]
  if setup then
   local factor=setup.factor or 1
   tfmdata.parameters.expansion={
    stretch=10*(setup.stretch or 0),
    shrink=10*(setup.shrink  or 0),
    step=10*(setup.step or 0),
    auto=true,
   }
   for i,chr in next,tfmdata.characters do
    local v=setup[i]
    if v and v~=0 then
     chr.expansion_factor=v*factor
    else 
     chr.expansion_factor=factor
    end
   end
  end
 end
end
local specification={
 name="expansion",
 description="apply hz optimization",
 initializers={
  base=initializeexpansion,
  node=initializeexpansion,
 }
}
registerotffeature(specification)
registerafmfeature(specification)
if not otf.features.normalize then
 otf.features.normalize=function(t)
  if t.rand then
   t.rand="random"
  end
  return t
 end
end
function fonts.helpers.nametoslot(name)
 local t=type(name)
 if t=="string" then
  local tfmdata=fonts.hashes.identifiers[currentfont()]
  local shared=tfmdata and tfmdata.shared
  local fntdata=shared and shared.rawdata
  return fntdata and fntdata.resources.unicodes[name]
 elseif t=="number" then
  return n
 end
end
fonts.encodings=fonts.encodings or {}
local reencodings={}
fonts.encodings.reencodings=reencodings
local function specialreencode(tfmdata,value)
 local encoding=value and reencodings[value]
 if encoding then
  local temp={}
  local char=tfmdata.characters
  for k,v in next,encoding do
   temp[k]=char[v]
  end
  for k,v in next,temp do
   char[k]=temp[k]
  end
  return string.format("reencoded:%s",value)
 end
end
local function initialize(tfmdata,value)
 tfmdata.postprocessors=tfmdata.postprocessors or {}
 table.insert(tfmdata.postprocessors,
  function(tfmdata)
   return specialreencode(tfmdata,value)
  end
 )
end
registerotffeature {
 name="reencode",
 description="reencode characters",
 manipulators={
  base=initialize,
  node=initialize,
 }
}
local function initialize(tfmdata,key,value)
 if value then
  tfmdata.mathparameters=nil
 end
end
registerotffeature {
 name="ignoremathconstants",
 description="ignore math constants table",
 initializers={
  base=initialize,
  node=initialize,
 }
}

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['font-imp-tex']={
 version=1.001,
 comment="companion to font-ini.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
local next=next
local fonts=fonts
local otf=fonts.handlers.otf
local registerotffeature=otf.features.register
local addotffeature=otf.addfeature
local specification={
 type="ligature",
 order={ "tlig" },
 prepend=true,
 data={
  [0x2013]={ 0x002D,0x002D },
  [0x2014]={ 0x002D,0x002D,0x002D },
 },
}
addotffeature("tlig",specification)
registerotffeature {
 name="tlig",
 description="tex ligatures",
}
local specification={
 type="substitution",
 order={ "trep" },
 prepend=true,
 data={
  [0x0027]=0x2019,
 },
}
addotffeature("trep",specification)
registerotffeature {
 name="trep",
 description="tex replacements",
}
local anum_arabic={
 [0x0030]=0x0660,
 [0x0031]=0x0661,
 [0x0032]=0x0662,
 [0x0033]=0x0663,
 [0x0034]=0x0664,
 [0x0035]=0x0665,
 [0x0036]=0x0666,
 [0x0037]=0x0667,
 [0x0038]=0x0668,
 [0x0039]=0x0669,
}
local anum_persian={
 [0x0030]=0x06F0,
 [0x0031]=0x06F1,
 [0x0032]=0x06F2,
 [0x0033]=0x06F3,
 [0x0034]=0x06F4,
 [0x0035]=0x06F5,
 [0x0036]=0x06F6,
 [0x0037]=0x06F7,
 [0x0038]=0x06F8,
 [0x0039]=0x06F9,
}
local function valid(data)
 local features=data.resources.features
 if features then
  for k,v in next,features do
   for k,v in next,v do
    if v.arab then
     return true
    end
   end
  end
 end
end
local specification={
 {
  type="substitution",
  features={ arab={ urd=true,dflt=true } },
  order={ "anum" },
  data=anum_arabic,
  valid=valid,
 },
 {
  type="substitution",
  features={ arab={ urd=true } },
  order={ "anum" },
  data=anum_persian,
  valid=valid,
 },
}
addotffeature("anum",specification)
registerotffeature {
 name="anum",
 description="arabic digits",
}

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['font-imp-ligatures']={
 version=1.001,
 comment="companion to font-ini.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
local lpegmatch=lpeg.match
local utfsplit=utf.split
local settings_to_array=utilities.parsers.settings_to_array
local fonts=fonts
local otf=fonts.handlers.otf
local registerotffeature=otf.features.register
local addotffeature=otf.addfeature
local lookups={}
local protect={}
local revert={}
local zwjchar=0x200C
local zwj={ zwjchar }
addotffeature {
 name="blockligatures",
 type="chainsubstitution",
 nocheck=true,
 prepend=true,
 future=true,
 lookups={
  {
   type="multiple",
   data=lookups,
  },
 },
 data={
  rules=protect,
 }
}
addotffeature {
 name="blockligatures",
 type="chainsubstitution",
 nocheck=true,
 append=true,
 overload=false,
 lookups={
  {
   type="ligature",
   data=lookups,
  },
 },
 data={
  rules=revert,
 }
}
registerotffeature {
 name='blockligatures',
 description='block certain ligatures',
}
local splitter=lpeg.splitat(":")
local function blockligatures(str)
 local t=settings_to_array(str)
 for i=1,#t do
  local ti=t[i]
  local before,current,after=lpegmatch(splitter,ti)
  if current and after then
   if before then
    before=utfsplit(before)
    for i=1,#before do
     before[i]={ before[i] }
    end
   end
   if current then
    current=utfsplit(current)
   end
   if after then
    after=utfsplit(after)
    for i=1,#after do
     after[i]={ after[i] }
    end
   end
  else
   before=nil
   current=utfsplit(ti)
   after=nil
  end
  if #current>1 then
   local one=current[1]
   local two=current[2]
   lookups[one]={ one,zwjchar }
   local one={ one }
   local two={ two }
   local new=#protect+1
   protect[new]={
    before=before,
    current={ one,two },
    after=after,
    lookups={ 1 },
   }
   revert[new]={
    current={ one,zwj },
    after={ two },
    lookups={ 1 },
   }
  end
 end
end
otf.helpers.blockligatures=blockligatures
if context then

--removed

end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['font-imp-italics']={
 version=1.001,
 comment="companion to font-ini.mkiv and hand-ini.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
local next=next
local fonts=fonts
local handlers=fonts.handlers
local registerotffeature=handlers.otf.features.register
local registerafmfeature=handlers.afm.features.register
local function initialize(tfmdata,key,value)
 for unicode,character in next,tfmdata.characters do
  local olditalic=character.italic
  if olditalic and olditalic~=0 then
   character.width=character.width+olditalic
   character.italic=0
  end
 end
end
local specification={
 name="italicwidths",
 description="add italic to width",
 manipulators={
  base=initialize,
  node=initialize,
 }
}
registerotffeature(specification)
registerafmfeature(specification)
local function initialize(tfmdata,value) 
 if value then
  local parameters=tfmdata.parameters
  local italicangle=parameters.italicangle
  if italicangle and italicangle~=0 then
   local properties=tfmdata.properties
   local factor=tonumber(value) or 1
   properties.hasitalics=true
   properties.autoitalicamount=factor*(parameters.uwidth or 40)/2
  end
 end
end
local specification={
 name="itlc",
 description="italic correction",
 initializers={
  base=initialize,
  node=initialize,
 }
}
registerotffeature(specification)
registerafmfeature(specification)
if context then

--removed

end
if context then
 local letter=characters.is_letter
 local always=true
 local function collapseitalics(tfmdata,key,value)
  local threshold=value==true and 100 or tonumber(value)
  if threshold and threshold>0 then
   if threshold>100 then
    threshold=100
   end
   for unicode,data in next,tfmdata.characters do
    if always or letter[unicode] or letter[data.unicode] then
     local italic=data.italic
     if italic and italic~=0 then
      local width=data.width
      if width and width~=0 then
       local delta=threshold*italic/100
       data.width=width+delta
       data.italic=italic-delta
      end
     end
    end
   end
  end
 end
 local dimensions_specification={
  name="collapseitalics",
  description="collapse italics",
  manipulators={
   base=collapseitalics,
   node=collapseitalics,
  }
 }
 registerotffeature(dimensions_specification)
 registerafmfeature(dimensions_specification)
end

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['font-imp-effects']={
 version=1.001,
 comment="companion to font-ini.mkiv",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
local next,type,tonumber=next,type,tonumber
local is_boolean=string.is_boolean
local fonts=fonts
local handlers=fonts.handlers
local registerotffeature=handlers.otf.features.register
local registerafmfeature=handlers.afm.features.register
local settings_to_hash=utilities.parsers.settings_to_hash_colon_too
local helpers=fonts.helpers
local prependcommands=helpers.prependcommands
local charcommand=helpers.commands.char
local leftcommand=helpers.commands.left
local rightcommand=helpers.commands.right
local upcommand=helpers.commands.up
local downcommand=helpers.commands.down
local dummycommand=helpers.commands.dummy
local report_effect=logs.reporter("fonts","effect")
local report_slant=logs.reporter("fonts","slant")
local report_extend=logs.reporter("fonts","extend")
local report_squeeze=logs.reporter("fonts","squeeze")
local trace=false
trackers.register("fonts.effect",function(v) trace=v end)
trackers.register("fonts.slant",function(v) trace=v end)
trackers.register("fonts.extend",function(v) trace=v end)
trackers.register("fonts.squeeze",function(v) trace=v end)
local function initializeslant(tfmdata,value)
 value=tonumber(value)
 if not value then
  value=0
 elseif value>1 then
  value=1
 elseif value<-1 then
  value=-1
 end
 if trace then
  report_slant("applying %0.3f",value)
 end
 tfmdata.parameters.slantfactor=value
end
local specification={
 name="slant",
 description="slant glyphs",
 initializers={
  base=initializeslant,
  node=initializeslant,
 }
}
registerotffeature(specification)
registerafmfeature(specification)
local function initializeextend(tfmdata,value)
 value=tonumber(value)
 if not value then
  value=0
 elseif value>10 then
  value=10
 elseif value<-10 then
  value=-10
 end
 if trace then
  report_extend("applying %0.3f",value)
 end
 tfmdata.parameters.extendfactor=value
end
local specification={
 name="extend",
 description="scale glyphs horizontally",
 initializers={
  base=initializeextend,
  node=initializeextend,
 }
}
registerotffeature(specification)
registerafmfeature(specification)
local function initializesqueeze(tfmdata,value)
 value=tonumber(value)
 if not value then
  value=0
 elseif value>10 then
  value=10
 elseif value<-10 then
  value=-10
 end
 if trace then
  report_squeeze("applying %0.3f",value)
 end
 tfmdata.parameters.squeezefactor=value
end
local specification={
 name="squeeze",
 description="scale glyphs vertically",
 initializers={
  base=initializesqueeze,
  node=initializesqueeze,
 }
}
registerotffeature(specification)
registerafmfeature(specification)
local effects={
 inner=0,
 normal=0,
 outer=1,
 outline=1,
 both=2,
 hidden=3,
}
local function initializeeffect(tfmdata,value)
 local spec
 if type(value)=="number" then
  spec={ width=value }
 else
  spec=settings_to_hash(value)
 end
 local effect=spec.effect or "both"
 local width=tonumber(spec.width) or 0
 local mode=effects[effect]
 if not mode then
  report_effect("invalid effect %a",effect)
 elseif width==0 and mode==0 then
  report_effect("invalid width %a for effect %a",width,effect)
 else
  local parameters=tfmdata.parameters
  local properties=tfmdata.properties
  parameters.mode=mode
  parameters.width=width*1000
  if is_boolean(spec.auto)==true then
   local squeeze=1-width/20
   local average=(1-squeeze)*width*100
   spec.squeeze=squeeze
   spec.extend=1+width/2
   spec.wdelta=average
   spec.hdelta=average/2
   spec.ddelta=average/2
   spec.vshift=average/2
  end
  local factor=tonumber(spec.factor)  or 0
  local hfactor=tonumber(spec.hfactor) or factor
  local vfactor=tonumber(spec.vfactor) or factor
  local delta=tonumber(spec.delta)   or 1
  local wdelta=tonumber(spec.wdelta)  or delta
  local hdelta=tonumber(spec.hdelta)  or delta
  local ddelta=tonumber(spec.ddelta)  or hdelta
  local vshift=tonumber(spec.vshift)  or 0
  local slant=spec.slant
  local extend=spec.extend
  local squeeze=spec.squeeze
  if slant then
   initializeslant(tfmdata,slant)
  end
  if extend then
   initializeextend(tfmdata,extend)
  end
  if squeeze then
   initializesqueeze(tfmdata,squeeze)
  end
  properties.effect={
   effect=effect,
   width=width,
   factor=factor,
   hfactor=hfactor,
   vfactor=vfactor,
   wdelta=wdelta,
   hdelta=hdelta,
   ddelta=ddelta,
   vshift=vshift,
   slant=tfmdata.parameters.slantfactor,
   extend=tfmdata.parameters.extendfactor,
   squeeze=tfmdata.parameters.squeezefactor,
  }
 end
end
local rules={
 "RadicalRuleThickness",
 "OverbarRuleThickness",
 "FractionRuleThickness",
 "UnderbarRuleThickness",
}
local function setmathparameters(tfmdata,characters,mathparameters,dx,dy,squeeze)
 if delta~=0 then
  for i=1,#rules do
   local name=rules[i]
   local value=mathparameters[name]
   if value then
      mathparameters[name]=(squeeze or 1)*(value+dx)
   end
  end
 end
end
local function setmathcharacters(tfmdata,characters,mathparameters,dx,dy,squeeze,wdelta,hdelta,ddelta)
 local function wdpatch(char)
  if wsnap~=0 then
   char.width=char.width+wdelta/2
  end
 end
 local function htpatch(char)
  if hsnap~=0 then
   local height=char.height
   if height then
    char.height=char.height+2*dy
   end
  end
 end
 local character=characters[0x221A]
 if character and character.next then
  local char=character
  local next=character.next
  wdpatch(char)
  htpatch(char)
  while next do
   char=characters[next]
   wdpatch(char)
   htpatch(char)
   next=char.next
  end
  if char then
   local v=char.vert_variants
   if v then
    local top=v[#v]
    if top then
     local char=characters[top.glyph]
     htpatch(char)
    end
   end
  end
 end
end
local function manipulateeffect(tfmdata)
 local effect=tfmdata.properties.effect
 if effect then
  local characters=tfmdata.characters
  local parameters=tfmdata.parameters
  local mathparameters=tfmdata.mathparameters
  local multiplier=effect.width*100
  local factor=parameters.factor
  local hfactor=parameters.hfactor
  local vfactor=parameters.vfactor
  local wdelta=effect.wdelta*hfactor*multiplier
  local hdelta=effect.hdelta*vfactor*multiplier
  local ddelta=effect.ddelta*vfactor*multiplier
  local vshift=effect.vshift*vfactor*multiplier
  local squeeze=effect.squeeze
  local hshift=wdelta/2
  local dx=multiplier*vfactor
  local dy=vshift
  local factor=(1+effect.factor)*factor
  local hfactor=(1+effect.hfactor)*hfactor
  local vfactor=(1+effect.vfactor)*vfactor
  local vshift=vshift~=0 and upcommand[vshift] or false
  for unicode,character in next,characters do
   local oldwidth=character.width
   local oldheight=character.height
   local olddepth=character.depth
   if oldwidth and oldwidth>0 then
    character.width=oldwidth+wdelta
    local commands=character.commands
    local hshift=rightcommand[hshift]
    if vshift then
     if commands then
      prependcommands (commands,
       hshift,
       vshift
      )
     else
      character.commands={
       hshift,
       vshift,
       charcommand[unicode]
      }
     end
    else
     if commands then
      prependcommands (commands,
       hshift
      )
     else
      character.commands={
       hshift,
       charcommand[unicode]
      }
     end
    end
   end
   if oldheight and oldheight>0 then
      character.height=oldheight+hdelta
   end
   if olddepth and olddepth>0 then
      character.depth=olddepth+ddelta
   end
  end
  if mathparameters then
   setmathparameters(tfmdata,characters,mathparameters,dx,dy,squeeze)
   setmathcharacters(tfmdata,characters,mathparameters,dx,dy,squeeze,wdelta,hdelta,ddelta)
  end
  parameters.factor=factor
  parameters.hfactor=hfactor
  parameters.vfactor=vfactor
  if trace then
   report_effect("applying")
   report_effect("  effect  : %s",effect.effect)
   report_effect("  width   : %s => %s",effect.width,multiplier)
   report_effect("  factor  : %s => %s",effect.factor,factor )
   report_effect("  hfactor : %s => %s",effect.hfactor,hfactor)
   report_effect("  vfactor : %s => %s",effect.vfactor,vfactor)
   report_effect("  wdelta  : %s => %s",effect.wdelta,wdelta)
   report_effect("  hdelta  : %s => %s",effect.hdelta,hdelta)
   report_effect("  ddelta  : %s => %s",effect.ddelta,ddelta)
  end
 end
end
local specification={
 name="effect",
 description="apply effects to glyphs",
 initializers={
  base=initializeeffect,
  node=initializeeffect,
 },
 manipulators={
  base=manipulateeffect,
  node=manipulateeffect,
 },
}
registerotffeature(specification)
registerafmfeature(specification)
local function initializeoutline(tfmdata,value)
 value=tonumber(value)
 if not value then
  value=0
 else
  value=tonumber(value) or 0
 end
 local parameters=tfmdata.parameters
 local properties=tfmdata.properties
 parameters.mode=effects.outline
 parameters.width=value*1000
 properties.effect={
  effect=effect,
  width=width,
 }
end
local specification={
 name="outline",
 description="outline glyphs",
 initializers={
  base=initializeoutline,
  node=initializeoutline,
 }
}
registerotffeature(specification)
registerafmfeature(specification)

end -- closure

do -- begin closure to overcome local limits and interference


fonts.handlers.otf.addfeature {
 ["dataset"]={
  {
   ["data"]={
 ["À"]={ "A","̀" },
 ["Á"]={ "A","́" },
 ["Â"]={ "A","̂" },
 ["Ã"]={ "A","̃" },
 ["Ä"]={ "A","̈" },
 ["Å"]={ "A","̊" },
 ["Ç"]={ "C","̧" },
 ["È"]={ "E","̀" },
 ["É"]={ "E","́" },
 ["Ê"]={ "E","̂" },
 ["Ë"]={ "E","̈" },
 ["Ì"]={ "I","̀" },
 ["Í"]={ "I","́" },
 ["Î"]={ "I","̂" },
 ["Ï"]={ "I","̈" },
 ["Ñ"]={ "N","̃" },
 ["Ò"]={ "O","̀" },
 ["Ó"]={ "O","́" },
 ["Ô"]={ "O","̂" },
 ["Õ"]={ "O","̃" },
 ["Ö"]={ "O","̈" },
 ["Ù"]={ "U","̀" },
 ["Ú"]={ "U","́" },
 ["Û"]={ "U","̂" },
 ["Ü"]={ "U","̈" },
 ["Ý"]={ "Y","́" },
 ["à"]={ "a","̀" },
 ["á"]={ "a","́" },
 ["â"]={ "a","̂" },
 ["ã"]={ "a","̃" },
 ["ä"]={ "a","̈" },
 ["å"]={ "a","̊" },
 ["ç"]={ "c","̧" },
 ["è"]={ "e","̀" },
 ["é"]={ "e","́" },
 ["ê"]={ "e","̂" },
 ["ë"]={ "e","̈" },
 ["ì"]={ "i","̀" },
 ["í"]={ "i","́" },
 ["î"]={ "i","̂" },
 ["ï"]={ "i","̈" },
 ["ñ"]={ "n","̃" },
 ["ò"]={ "o","̀" },
 ["ó"]={ "o","́" },
 ["ô"]={ "o","̂" },
 ["õ"]={ "o","̃" },
 ["ö"]={ "o","̈" },
 ["ù"]={ "u","̀" },
 ["ú"]={ "u","́" },
 ["û"]={ "u","̂" },
 ["ü"]={ "u","̈" },
 ["ý"]={ "y","́" },
 ["ÿ"]={ "y","̈" },
 ["Ā"]={ "A","̄" },
 ["ā"]={ "a","̄" },
 ["Ă"]={ "A","̆" },
 ["ă"]={ "a","̆" },
 ["Ą"]={ "A","̨" },
 ["ą"]={ "a","̨" },
 ["Ć"]={ "C","́" },
 ["ć"]={ "c","́" },
 ["Ĉ"]={ "C","̂" },
 ["ĉ"]={ "c","̂" },
 ["Ċ"]={ "C","̇" },
 ["ċ"]={ "c","̇" },
 ["Č"]={ "C","̌" },
 ["č"]={ "c","̌" },
 ["Ď"]={ "D","̌" },
 ["ď"]={ "d","̌" },
 ["Ē"]={ "E","̄" },
 ["ē"]={ "e","̄" },
 ["Ĕ"]={ "E","̆" },
 ["ĕ"]={ "e","̆" },
 ["Ė"]={ "E","̇" },
 ["ė"]={ "e","̇" },
 ["Ę"]={ "E","̨" },
 ["ę"]={ "e","̨" },
 ["Ě"]={ "E","̌" },
 ["ě"]={ "e","̌" },
 ["Ĝ"]={ "G","̂" },
 ["ĝ"]={ "g","̂" },
 ["Ğ"]={ "G","̆" },
 ["ğ"]={ "g","̆" },
 ["Ġ"]={ "G","̇" },
 ["ġ"]={ "g","̇" },
 ["Ģ"]={ "G","̧" },
 ["ģ"]={ "g","̧" },
 ["Ĥ"]={ "H","̂" },
 ["ĥ"]={ "h","̂" },
 ["Ĩ"]={ "I","̃" },
 ["ĩ"]={ "i","̃" },
 ["Ī"]={ "I","̄" },
 ["ī"]={ "i","̄" },
 ["Ĭ"]={ "I","̆" },
 ["ĭ"]={ "i","̆" },
 ["Į"]={ "I","̨" },
 ["į"]={ "i","̨" },
 ["İ"]={ "I","̇" },
 ["Ĵ"]={ "J","̂" },
 ["ĵ"]={ "j","̂" },
 ["Ķ"]={ "K","̧" },
 ["ķ"]={ "k","̧" },
 ["Ĺ"]={ "L","́" },
 ["ĺ"]={ "l","́" },
 ["Ļ"]={ "L","̧" },
 ["ļ"]={ "l","̧" },
 ["Ľ"]={ "L","̌" },
 ["ľ"]={ "l","̌" },
 ["Ń"]={ "N","́" },
 ["ń"]={ "n","́" },
 ["Ņ"]={ "N","̧" },
 ["ņ"]={ "n","̧" },
 ["Ň"]={ "N","̌" },
 ["ň"]={ "n","̌" },
 ["Ō"]={ "O","̄" },
 ["ō"]={ "o","̄" },
 ["Ŏ"]={ "O","̆" },
 ["ŏ"]={ "o","̆" },
 ["Ő"]={ "O","̋" },
 ["ő"]={ "o","̋" },
 ["Ŕ"]={ "R","́" },
 ["ŕ"]={ "r","́" },
 ["Ŗ"]={ "R","̧" },
 ["ŗ"]={ "r","̧" },
 ["Ř"]={ "R","̌" },
 ["ř"]={ "r","̌" },
 ["Ś"]={ "S","́" },
 ["ś"]={ "s","́" },
 ["Ŝ"]={ "S","̂" },
 ["ŝ"]={ "s","̂" },
 ["Ş"]={ "S","̧" },
 ["ş"]={ "s","̧" },
 ["Š"]={ "S","̌" },
 ["š"]={ "s","̌" },
 ["Ţ"]={ "T","̧" },
 ["ţ"]={ "t","̧" },
 ["Ť"]={ "T","̌" },
 ["ť"]={ "t","̌" },
 ["Ũ"]={ "U","̃" },
 ["ũ"]={ "u","̃" },
 ["Ū"]={ "U","̄" },
 ["ū"]={ "u","̄" },
 ["Ŭ"]={ "U","̆" },
 ["ŭ"]={ "u","̆" },
 ["Ů"]={ "U","̊" },
 ["ů"]={ "u","̊" },
 ["Ű"]={ "U","̋" },
 ["ű"]={ "u","̋" },
 ["Ų"]={ "U","̨" },
 ["ų"]={ "u","̨" },
 ["Ŵ"]={ "W","̂" },
 ["ŵ"]={ "w","̂" },
 ["Ŷ"]={ "Y","̂" },
 ["ŷ"]={ "y","̂" },
 ["Ÿ"]={ "Y","̈" },
 ["Ź"]={ "Z","́" },
 ["ź"]={ "z","́" },
 ["Ż"]={ "Z","̇" },
 ["ż"]={ "z","̇" },
 ["Ž"]={ "Z","̌" },
 ["ž"]={ "z","̌" },
 ["Ơ"]={ "O","̛" },
 ["ơ"]={ "o","̛" },
 ["Ư"]={ "U","̛" },
 ["ư"]={ "u","̛" },
 ["Ǎ"]={ "A","̌" },
 ["ǎ"]={ "a","̌" },
 ["Ǐ"]={ "I","̌" },
 ["ǐ"]={ "i","̌" },
 ["Ǒ"]={ "O","̌" },
 ["ǒ"]={ "o","̌" },
 ["Ǔ"]={ "U","̌" },
 ["ǔ"]={ "u","̌" },
 ["Ǖ"]={ "Ü","̄" },
 ["ǖ"]={ "ü","̄" },
 ["Ǘ"]={ "Ü","́" },
 ["ǘ"]={ "ü","́" },
 ["Ǚ"]={ "Ü","̌" },
 ["ǚ"]={ "ü","̌" },
 ["Ǜ"]={ "Ü","̀" },
 ["ǜ"]={ "ü","̀" },
 ["Ǟ"]={ "Ä","̄" },
 ["ǟ"]={ "ä","̄" },
 ["Ǡ"]={ "Ȧ","̄" },
 ["ǡ"]={ "ȧ","̄" },
 ["Ǣ"]={ "Æ","̄" },
 ["ǣ"]={ "æ","̄" },
 ["Ǧ"]={ "G","̌" },
 ["ǧ"]={ "g","̌" },
 ["Ǩ"]={ "K","̌" },
 ["ǩ"]={ "k","̌" },
 ["Ǫ"]={ "O","̨" },
 ["ǫ"]={ "o","̨" },
 ["Ǭ"]={ "Ǫ","̄" },
 ["ǭ"]={ "ǫ","̄" },
 ["Ǯ"]={ "Ʒ","̌" },
 ["ǯ"]={ "ʒ","̌" },
 ["ǰ"]={ "j","̌" },
 ["Ǵ"]={ "G","́" },
 ["ǵ"]={ "g","́" },
 ["Ǹ"]={ "N","̀" },
 ["ǹ"]={ "n","̀" },
 ["Ǻ"]={ "Å","́" },
 ["ǻ"]={ "å","́" },
 ["Ǽ"]={ "Æ","́" },
 ["ǽ"]={ "æ","́" },
 ["Ǿ"]={ "Ø","́" },
 ["ǿ"]={ "ø","́" },
 ["Ȁ"]={ "A","̏" },
 ["ȁ"]={ "a","̏" },
 ["Ȃ"]={ "A","̑" },
 ["ȃ"]={ "a","̑" },
 ["Ȅ"]={ "E","̏" },
 ["ȅ"]={ "e","̏" },
 ["Ȇ"]={ "E","̑" },
 ["ȇ"]={ "e","̑" },
 ["Ȉ"]={ "I","̏" },
 ["ȉ"]={ "i","̏" },
 ["Ȋ"]={ "I","̑" },
 ["ȋ"]={ "i","̑" },
 ["Ȍ"]={ "O","̏" },
 ["ȍ"]={ "o","̏" },
 ["Ȏ"]={ "O","̑" },
 ["ȏ"]={ "o","̑" },
 ["Ȑ"]={ "R","̏" },
 ["ȑ"]={ "r","̏" },
 ["Ȓ"]={ "R","̑" },
 ["ȓ"]={ "r","̑" },
 ["Ȕ"]={ "U","̏" },
 ["ȕ"]={ "u","̏" },
 ["Ȗ"]={ "U","̑" },
 ["ȗ"]={ "u","̑" },
 ["Ș"]={ "S","̦" },
 ["ș"]={ "s","̦" },
 ["Ț"]={ "T","̦" },
 ["ț"]={ "t","̦" },
 ["Ȟ"]={ "H","̌" },
 ["ȟ"]={ "h","̌" },
 ["Ȧ"]={ "A","̇" },
 ["ȧ"]={ "a","̇" },
 ["Ȩ"]={ "E","̧" },
 ["ȩ"]={ "e","̧" },
 ["Ȫ"]={ "Ö","̄" },
 ["ȫ"]={ "ö","̄" },
 ["Ȭ"]={ "Õ","̄" },
 ["ȭ"]={ "õ","̄" },
 ["Ȯ"]={ "O","̇" },
 ["ȯ"]={ "o","̇" },
 ["Ȱ"]={ "Ȯ","̄" },
 ["ȱ"]={ "ȯ","̄" },
 ["Ȳ"]={ "Y","̄" },
 ["ȳ"]={ "y","̄" },
 ["̈́"]={ "̈","́" },
 ["΅"]={ "¨","́" },
 ["Ά"]={ "Α","́" },
 ["Έ"]={ "Ε","́" },
 ["Ή"]={ "Η","́" },
 ["Ί"]={ "Ι","́" },
 ["Ό"]={ "Ο","́" },
 ["Ύ"]={ "Υ","́" },
 ["Ώ"]={ "Ω","́" },
 ["ΐ"]={ "ϊ","́" },
 ["Ϊ"]={ "Ι","̈" },
 ["Ϋ"]={ "Υ","̈" },
 ["ά"]={ "α","́" },
 ["έ"]={ "ε","́" },
 ["ή"]={ "η","́" },
 ["ί"]={ "ι","́" },
 ["ΰ"]={ "ϋ","́" },
 ["ϊ"]={ "ι","̈" },
 ["ϋ"]={ "υ","̈" },
 ["ό"]={ "ο","́" },
 ["ύ"]={ "υ","́" },
 ["ώ"]={ "ω","́" },
 ["ϓ"]={ "ϒ","́" },
 ["ϔ"]={ "ϒ","̈" },
 ["Ѐ"]={ "Е","̀" },
 ["Ё"]={ "Е","̈" },
 ["Ѓ"]={ "Г","́" },
 ["Ї"]={ "І","̈" },
 ["Ќ"]={ "К","́" },
 ["Ѝ"]={ "И","̀" },
 ["Ў"]={ "У","̆" },
 ["Й"]={ "И","̆" },
 ["й"]={ "и","̆" },
 ["ѐ"]={ "е","̀" },
 ["ё"]={ "е","̈" },
 ["ѓ"]={ "г","́" },
 ["ї"]={ "і","̈" },
 ["ќ"]={ "к","́" },
 ["ѝ"]={ "и","̀" },
 ["ў"]={ "у","̆" },
 ["Ѷ"]={ "Ѵ","̏" },
 ["ѷ"]={ "ѵ","̏" },
 ["Ӂ"]={ "Ж","̆" },
 ["ӂ"]={ "ж","̆" },
 ["Ӑ"]={ "А","̆" },
 ["ӑ"]={ "а","̆" },
 ["Ӓ"]={ "А","̈" },
 ["ӓ"]={ "а","̈" },
 ["Ӗ"]={ "Е","̆" },
 ["ӗ"]={ "е","̆" },
 ["Ӛ"]={ "Ә","̈" },
 ["ӛ"]={ "ә","̈" },
 ["Ӝ"]={ "Ж","̈" },
 ["ӝ"]={ "ж","̈" },
 ["Ӟ"]={ "З","̈" },
 ["ӟ"]={ "з","̈" },
 ["Ӣ"]={ "И","̄" },
 ["ӣ"]={ "и","̄" },
 ["Ӥ"]={ "И","̈" },
 ["ӥ"]={ "и","̈" },
 ["Ӧ"]={ "О","̈" },
 ["ӧ"]={ "о","̈" },
 ["Ӫ"]={ "Ө","̈" },
 ["ӫ"]={ "ө","̈" },
 ["Ӭ"]={ "Э","̈" },
 ["ӭ"]={ "э","̈" },
 ["Ӯ"]={ "У","̄" },
 ["ӯ"]={ "у","̄" },
 ["Ӱ"]={ "У","̈" },
 ["ӱ"]={ "у","̈" },
 ["Ӳ"]={ "У","̋" },
 ["ӳ"]={ "у","̋" },
 ["Ӵ"]={ "Ч","̈" },
 ["ӵ"]={ "ч","̈" },
 ["Ӹ"]={ "Ы","̈" },
 ["ӹ"]={ "ы","̈" },
 ["آ"]={ "ا","ٓ" },
 ["أ"]={ "ا","ٔ" },
 ["ؤ"]={ "و","ٔ" },
 ["إ"]={ "ا","ٕ" },
 ["ئ"]={ "ي","ٔ" },
 ["ۀ"]={ "ە","ٔ" },
 ["ۂ"]={ "ہ","ٔ" },
 ["ۓ"]={ "ے","ٔ" },
 ["ऩ"]={ "न","़" },
 ["ऱ"]={ "र","़" },
 ["ऴ"]={ "ळ","़" },
 ["क़"]={ "क","़" },
 ["ख़"]={ "ख","़" },
 ["ग़"]={ "ग","़" },
 ["ज़"]={ "ज","़" },
 ["ड़"]={ "ड","़" },
 ["ढ़"]={ "ढ","़" },
 ["फ़"]={ "फ","़" },
 ["य़"]={ "य","़" },
 ["ো"]={ "ে","া" },
 ["ৌ"]={ "ে","ৗ" },
 ["ড়"]={ "ড","়" },
 ["ঢ়"]={ "ঢ","়" },
 ["য়"]={ "য","়" },
 ["ਲ਼"]={ "ਲ","਼" },
 ["ਸ਼"]={ "ਸ","਼" },
 ["ਖ਼"]={ "ਖ","਼" },
 ["ਗ਼"]={ "ਗ","਼" },
 ["ਜ਼"]={ "ਜ","਼" },
 ["ਫ਼"]={ "ਫ","਼" },
 ["ୈ"]={ "େ","ୖ" },
 ["ୋ"]={ "େ","ା" },
 ["ୌ"]={ "େ","ୗ" },
 ["ଡ଼"]={ "ଡ","଼" },
 ["ଢ଼"]={ "ଢ","଼" },
 ["ஔ"]={ "ஒ","ௗ" },
 ["ொ"]={ "ெ","ா" },
 ["ோ"]={ "ே","ா" },
 ["ௌ"]={ "ெ","ௗ" },
 ["ై"]={ "ె","ౖ" },
 ["ೀ"]={ "ಿ","ೕ" },
 ["ೇ"]={ "ೆ","ೕ" },
 ["ೈ"]={ "ೆ","ೖ" },
 ["ೊ"]={ "ೆ","ೂ" },
 ["ೋ"]={ "ೊ","ೕ" },
 ["ൊ"]={ "െ","ാ" },
 ["ോ"]={ "േ","ാ" },
 ["ൌ"]={ "െ","ൗ" },
 ["ේ"]={ "ෙ","්" },
 ["ො"]={ "ෙ","ා" },
 ["ෝ"]={ "ො","්" },
 ["ෞ"]={ "ෙ","ෟ" },
 ["གྷ"]={ "ག","ྷ" },
 ["ཌྷ"]={ "ཌ","ྷ" },
 ["དྷ"]={ "ད","ྷ" },
 ["བྷ"]={ "བ","ྷ" },
 ["ཛྷ"]={ "ཛ","ྷ" },
 ["ཀྵ"]={ "ཀ","ྵ" },
 ["ཱི"]={ "ཱ","ི" },
 ["ཱུ"]={ "ཱ","ུ" },
 ["ྲྀ"]={ "ྲ","ྀ" },
 ["ླྀ"]={ "ླ","ྀ" },
 ["ཱྀ"]={ "ཱ","ྀ" },
 ["ྒྷ"]={ "ྒ","ྷ" },
 ["ྜྷ"]={ "ྜ","ྷ" },
 ["ྡྷ"]={ "ྡ","ྷ" },
 ["ྦྷ"]={ "ྦ","ྷ" },
 ["ྫྷ"]={ "ྫ","ྷ" },
 ["ྐྵ"]={ "ྐ","ྵ" },
 ["ဦ"]={ "ဥ","ီ" },
 ["ᬆ"]={ "ᬅ","ᬵ" },
 ["ᬈ"]={ "ᬇ","ᬵ" },
 ["ᬊ"]={ "ᬉ","ᬵ" },
 ["ᬌ"]={ "ᬋ","ᬵ" },
 ["ᬎ"]={ "ᬍ","ᬵ" },
 ["ᬒ"]={ "ᬑ","ᬵ" },
 ["ᬻ"]={ "ᬺ","ᬵ" },
 ["ᬽ"]={ "ᬼ","ᬵ" },
 ["ᭀ"]={ "ᬾ","ᬵ" },
 ["ᭁ"]={ "ᬿ","ᬵ" },
 ["ᭃ"]={ "ᭂ","ᬵ" },
 ["Ḁ"]={ "A","̥" },
 ["ḁ"]={ "a","̥" },
 ["Ḃ"]={ "B","̇" },
 ["ḃ"]={ "b","̇" },
 ["Ḅ"]={ "B","̣" },
 ["ḅ"]={ "b","̣" },
 ["Ḇ"]={ "B","̱" },
 ["ḇ"]={ "b","̱" },
 ["Ḉ"]={ "Ç","́" },
 ["ḉ"]={ "ç","́" },
 ["Ḋ"]={ "D","̇" },
 ["ḋ"]={ "d","̇" },
 ["Ḍ"]={ "D","̣" },
 ["ḍ"]={ "d","̣" },
 ["Ḏ"]={ "D","̱" },
 ["ḏ"]={ "d","̱" },
 ["Ḑ"]={ "D","̧" },
 ["ḑ"]={ "d","̧" },
 ["Ḓ"]={ "D","̭" },
 ["ḓ"]={ "d","̭" },
 ["Ḕ"]={ "Ē","̀" },
 ["ḕ"]={ "ē","̀" },
 ["Ḗ"]={ "Ē","́" },
 ["ḗ"]={ "ē","́" },
 ["Ḙ"]={ "E","̭" },
 ["ḙ"]={ "e","̭" },
 ["Ḛ"]={ "E","̰" },
 ["ḛ"]={ "e","̰" },
 ["Ḝ"]={ "Ȩ","̆" },
 ["ḝ"]={ "ȩ","̆" },
 ["Ḟ"]={ "F","̇" },
 ["ḟ"]={ "f","̇" },
 ["Ḡ"]={ "G","̄" },
 ["ḡ"]={ "g","̄" },
 ["Ḣ"]={ "H","̇" },
 ["ḣ"]={ "h","̇" },
 ["Ḥ"]={ "H","̣" },
 ["ḥ"]={ "h","̣" },
 ["Ḧ"]={ "H","̈" },
 ["ḧ"]={ "h","̈" },
 ["Ḩ"]={ "H","̧" },
 ["ḩ"]={ "h","̧" },
 ["Ḫ"]={ "H","̮" },
 ["ḫ"]={ "h","̮" },
 ["Ḭ"]={ "I","̰" },
 ["ḭ"]={ "i","̰" },
 ["Ḯ"]={ "Ï","́" },
 ["ḯ"]={ "ï","́" },
 ["Ḱ"]={ "K","́" },
 ["ḱ"]={ "k","́" },
 ["Ḳ"]={ "K","̣" },
 ["ḳ"]={ "k","̣" },
 ["Ḵ"]={ "K","̱" },
 ["ḵ"]={ "k","̱" },
 ["Ḷ"]={ "L","̣" },
 ["ḷ"]={ "l","̣" },
 ["Ḹ"]={ "Ḷ","̄" },
 ["ḹ"]={ "ḷ","̄" },
 ["Ḻ"]={ "L","̱" },
 ["ḻ"]={ "l","̱" },
 ["Ḽ"]={ "L","̭" },
 ["ḽ"]={ "l","̭" },
 ["Ḿ"]={ "M","́" },
 ["ḿ"]={ "m","́" },
 ["Ṁ"]={ "M","̇" },
 ["ṁ"]={ "m","̇" },
 ["Ṃ"]={ "M","̣" },
 ["ṃ"]={ "m","̣" },
 ["Ṅ"]={ "N","̇" },
 ["ṅ"]={ "n","̇" },
 ["Ṇ"]={ "N","̣" },
 ["ṇ"]={ "n","̣" },
 ["Ṉ"]={ "N","̱" },
 ["ṉ"]={ "n","̱" },
 ["Ṋ"]={ "N","̭" },
 ["ṋ"]={ "n","̭" },
 ["Ṍ"]={ "Õ","́" },
 ["ṍ"]={ "õ","́" },
 ["Ṏ"]={ "Õ","̈" },
 ["ṏ"]={ "õ","̈" },
 ["Ṑ"]={ "Ō","̀" },
 ["ṑ"]={ "ō","̀" },
 ["Ṓ"]={ "Ō","́" },
 ["ṓ"]={ "ō","́" },
 ["Ṕ"]={ "P","́" },
 ["ṕ"]={ "p","́" },
 ["Ṗ"]={ "P","̇" },
 ["ṗ"]={ "p","̇" },
 ["Ṙ"]={ "R","̇" },
 ["ṙ"]={ "r","̇" },
 ["Ṛ"]={ "R","̣" },
 ["ṛ"]={ "r","̣" },
 ["Ṝ"]={ "Ṛ","̄" },
 ["ṝ"]={ "ṛ","̄" },
 ["Ṟ"]={ "R","̱" },
 ["ṟ"]={ "r","̱" },
 ["Ṡ"]={ "S","̇" },
 ["ṡ"]={ "s","̇" },
 ["Ṣ"]={ "S","̣" },
 ["ṣ"]={ "s","̣" },
 ["Ṥ"]={ "Ś","̇" },
 ["ṥ"]={ "ś","̇" },
 ["Ṧ"]={ "Š","̇" },
 ["ṧ"]={ "š","̇" },
 ["Ṩ"]={ "Ṣ","̇" },
 ["ṩ"]={ "ṣ","̇" },
 ["Ṫ"]={ "T","̇" },
 ["ṫ"]={ "t","̇" },
 ["Ṭ"]={ "T","̣" },
 ["ṭ"]={ "t","̣" },
 ["Ṯ"]={ "T","̱" },
 ["ṯ"]={ "t","̱" },
 ["Ṱ"]={ "T","̭" },
 ["ṱ"]={ "t","̭" },
 ["Ṳ"]={ "U","̤" },
 ["ṳ"]={ "u","̤" },
 ["Ṵ"]={ "U","̰" },
 ["ṵ"]={ "u","̰" },
 ["Ṷ"]={ "U","̭" },
 ["ṷ"]={ "u","̭" },
 ["Ṹ"]={ "Ũ","́" },
 ["ṹ"]={ "ũ","́" },
 ["Ṻ"]={ "Ū","̈" },
 ["ṻ"]={ "ū","̈" },
 ["Ṽ"]={ "V","̃" },
 ["ṽ"]={ "v","̃" },
 ["Ṿ"]={ "V","̣" },
 ["ṿ"]={ "v","̣" },
 ["Ẁ"]={ "W","̀" },
 ["ẁ"]={ "w","̀" },
 ["Ẃ"]={ "W","́" },
 ["ẃ"]={ "w","́" },
 ["Ẅ"]={ "W","̈" },
 ["ẅ"]={ "w","̈" },
 ["Ẇ"]={ "W","̇" },
 ["ẇ"]={ "w","̇" },
 ["Ẉ"]={ "W","̣" },
 ["ẉ"]={ "w","̣" },
 ["Ẋ"]={ "X","̇" },
 ["ẋ"]={ "x","̇" },
 ["Ẍ"]={ "X","̈" },
 ["ẍ"]={ "x","̈" },
 ["Ẏ"]={ "Y","̇" },
 ["ẏ"]={ "y","̇" },
 ["Ẑ"]={ "Z","̂" },
 ["ẑ"]={ "z","̂" },
 ["Ẓ"]={ "Z","̣" },
 ["ẓ"]={ "z","̣" },
 ["Ẕ"]={ "Z","̱" },
 ["ẕ"]={ "z","̱" },
 ["ẖ"]={ "h","̱" },
 ["ẗ"]={ "t","̈" },
 ["ẘ"]={ "w","̊" },
 ["ẙ"]={ "y","̊" },
 ["ẛ"]={ "ſ","̇" },
 ["Ạ"]={ "A","̣" },
 ["ạ"]={ "a","̣" },
 ["Ả"]={ "A","̉" },
 ["ả"]={ "a","̉" },
 ["Ấ"]={ "Â","́" },
 ["ấ"]={ "â","́" },
 ["Ầ"]={ "Â","̀" },
 ["ầ"]={ "â","̀" },
 ["Ẩ"]={ "Â","̉" },
 ["ẩ"]={ "â","̉" },
 ["Ẫ"]={ "Â","̃" },
 ["ẫ"]={ "â","̃" },
 ["Ậ"]={ "Ạ","̂" },
 ["ậ"]={ "ạ","̂" },
 ["Ắ"]={ "Ă","́" },
 ["ắ"]={ "ă","́" },
 ["Ằ"]={ "Ă","̀" },
 ["ằ"]={ "ă","̀" },
 ["Ẳ"]={ "Ă","̉" },
 ["ẳ"]={ "ă","̉" },
 ["Ẵ"]={ "Ă","̃" },
 ["ẵ"]={ "ă","̃" },
 ["Ặ"]={ "Ạ","̆" },
 ["ặ"]={ "ạ","̆" },
 ["Ẹ"]={ "E","̣" },
 ["ẹ"]={ "e","̣" },
 ["Ẻ"]={ "E","̉" },
 ["ẻ"]={ "e","̉" },
 ["Ẽ"]={ "E","̃" },
 ["ẽ"]={ "e","̃" },
 ["Ế"]={ "Ê","́" },
 ["ế"]={ "ê","́" },
 ["Ề"]={ "Ê","̀" },
 ["ề"]={ "ê","̀" },
 ["Ể"]={ "Ê","̉" },
 ["ể"]={ "ê","̉" },
 ["Ễ"]={ "Ê","̃" },
 ["ễ"]={ "ê","̃" },
 ["Ệ"]={ "Ẹ","̂" },
 ["ệ"]={ "ẹ","̂" },
 ["Ỉ"]={ "I","̉" },
 ["ỉ"]={ "i","̉" },
 ["Ị"]={ "I","̣" },
 ["ị"]={ "i","̣" },
 ["Ọ"]={ "O","̣" },
 ["ọ"]={ "o","̣" },
 ["Ỏ"]={ "O","̉" },
 ["ỏ"]={ "o","̉" },
 ["Ố"]={ "Ô","́" },
 ["ố"]={ "ô","́" },
 ["Ồ"]={ "Ô","̀" },
 ["ồ"]={ "ô","̀" },
 ["Ổ"]={ "Ô","̉" },
 ["ổ"]={ "ô","̉" },
 ["Ỗ"]={ "Ô","̃" },
 ["ỗ"]={ "ô","̃" },
 ["Ộ"]={ "Ọ","̂" },
 ["ộ"]={ "ọ","̂" },
 ["Ớ"]={ "Ơ","́" },
 ["ớ"]={ "ơ","́" },
 ["Ờ"]={ "Ơ","̀" },
 ["ờ"]={ "ơ","̀" },
 ["Ở"]={ "Ơ","̉" },
 ["ở"]={ "ơ","̉" },
 ["Ỡ"]={ "Ơ","̃" },
 ["ỡ"]={ "ơ","̃" },
 ["Ợ"]={ "Ơ","̣" },
 ["ợ"]={ "ơ","̣" },
 ["Ụ"]={ "U","̣" },
 ["ụ"]={ "u","̣" },
 ["Ủ"]={ "U","̉" },
 ["ủ"]={ "u","̉" },
 ["Ứ"]={ "Ư","́" },
 ["ứ"]={ "ư","́" },
 ["Ừ"]={ "Ư","̀" },
 ["ừ"]={ "ư","̀" },
 ["Ử"]={ "Ư","̉" },
 ["ử"]={ "ư","̉" },
 ["Ữ"]={ "Ư","̃" },
 ["ữ"]={ "ư","̃" },
 ["Ự"]={ "Ư","̣" },
 ["ự"]={ "ư","̣" },
 ["Ỳ"]={ "Y","̀" },
 ["ỳ"]={ "y","̀" },
 ["Ỵ"]={ "Y","̣" },
 ["ỵ"]={ "y","̣" },
 ["Ỷ"]={ "Y","̉" },
 ["ỷ"]={ "y","̉" },
 ["Ỹ"]={ "Y","̃" },
 ["ỹ"]={ "y","̃" },
 ["ἀ"]={ "α","̓" },
 ["ἁ"]={ "α","̔" },
 ["ἂ"]={ "ἀ","̀" },
 ["ἃ"]={ "ἁ","̀" },
 ["ἄ"]={ "ἀ","́" },
 ["ἅ"]={ "ἁ","́" },
 ["ἆ"]={ "ἀ","͂" },
 ["ἇ"]={ "ἁ","͂" },
 ["Ἀ"]={ "Α","̓" },
 ["Ἁ"]={ "Α","̔" },
 ["Ἂ"]={ "Ἀ","̀" },
 ["Ἃ"]={ "Ἁ","̀" },
 ["Ἄ"]={ "Ἀ","́" },
 ["Ἅ"]={ "Ἁ","́" },
 ["Ἆ"]={ "Ἀ","͂" },
 ["Ἇ"]={ "Ἁ","͂" },
 ["ἐ"]={ "ε","̓" },
 ["ἑ"]={ "ε","̔" },
 ["ἒ"]={ "ἐ","̀" },
 ["ἓ"]={ "ἑ","̀" },
 ["ἔ"]={ "ἐ","́" },
 ["ἕ"]={ "ἑ","́" },
 ["Ἐ"]={ "Ε","̓" },
 ["Ἑ"]={ "Ε","̔" },
 ["Ἒ"]={ "Ἐ","̀" },
 ["Ἓ"]={ "Ἑ","̀" },
 ["Ἔ"]={ "Ἐ","́" },
 ["Ἕ"]={ "Ἑ","́" },
 ["ἠ"]={ "η","̓" },
 ["ἡ"]={ "η","̔" },
 ["ἢ"]={ "ἠ","̀" },
 ["ἣ"]={ "ἡ","̀" },
 ["ἤ"]={ "ἠ","́" },
 ["ἥ"]={ "ἡ","́" },
 ["ἦ"]={ "ἠ","͂" },
 ["ἧ"]={ "ἡ","͂" },
 ["Ἠ"]={ "Η","̓" },
 ["Ἡ"]={ "Η","̔" },
 ["Ἢ"]={ "Ἠ","̀" },
 ["Ἣ"]={ "Ἡ","̀" },
 ["Ἤ"]={ "Ἠ","́" },
 ["Ἥ"]={ "Ἡ","́" },
 ["Ἦ"]={ "Ἠ","͂" },
 ["Ἧ"]={ "Ἡ","͂" },
 ["ἰ"]={ "ι","̓" },
 ["ἱ"]={ "ι","̔" },
 ["ἲ"]={ "ἰ","̀" },
 ["ἳ"]={ "ἱ","̀" },
 ["ἴ"]={ "ἰ","́" },
 ["ἵ"]={ "ἱ","́" },
 ["ἶ"]={ "ἰ","͂" },
 ["ἷ"]={ "ἱ","͂" },
 ["Ἰ"]={ "Ι","̓" },
 ["Ἱ"]={ "Ι","̔" },
 ["Ἲ"]={ "Ἰ","̀" },
 ["Ἳ"]={ "Ἱ","̀" },
 ["Ἴ"]={ "Ἰ","́" },
 ["Ἵ"]={ "Ἱ","́" },
 ["Ἶ"]={ "Ἰ","͂" },
 ["Ἷ"]={ "Ἱ","͂" },
 ["ὀ"]={ "ο","̓" },
 ["ὁ"]={ "ο","̔" },
 ["ὂ"]={ "ὀ","̀" },
 ["ὃ"]={ "ὁ","̀" },
 ["ὄ"]={ "ὀ","́" },
 ["ὅ"]={ "ὁ","́" },
 ["Ὀ"]={ "Ο","̓" },
 ["Ὁ"]={ "Ο","̔" },
 ["Ὂ"]={ "Ὀ","̀" },
 ["Ὃ"]={ "Ὁ","̀" },
 ["Ὄ"]={ "Ὀ","́" },
 ["Ὅ"]={ "Ὁ","́" },
 ["ὐ"]={ "υ","̓" },
 ["ὑ"]={ "υ","̔" },
 ["ὒ"]={ "ὐ","̀" },
 ["ὓ"]={ "ὑ","̀" },
 ["ὔ"]={ "ὐ","́" },
 ["ὕ"]={ "ὑ","́" },
 ["ὖ"]={ "ὐ","͂" },
 ["ὗ"]={ "ὑ","͂" },
 ["Ὑ"]={ "Υ","̔" },
 ["Ὓ"]={ "Ὑ","̀" },
 ["Ὕ"]={ "Ὑ","́" },
 ["Ὗ"]={ "Ὑ","͂" },
 ["ὠ"]={ "ω","̓" },
 ["ὡ"]={ "ω","̔" },
 ["ὢ"]={ "ὠ","̀" },
 ["ὣ"]={ "ὡ","̀" },
 ["ὤ"]={ "ὠ","́" },
 ["ὥ"]={ "ὡ","́" },
 ["ὦ"]={ "ὠ","͂" },
 ["ὧ"]={ "ὡ","͂" },
 ["Ὠ"]={ "Ω","̓" },
 ["Ὡ"]={ "Ω","̔" },
 ["Ὢ"]={ "Ὠ","̀" },
 ["Ὣ"]={ "Ὡ","̀" },
 ["Ὤ"]={ "Ὠ","́" },
 ["Ὥ"]={ "Ὡ","́" },
 ["Ὦ"]={ "Ὠ","͂" },
 ["Ὧ"]={ "Ὡ","͂" },
 ["ὰ"]={ "α","̀" },
 ["ὲ"]={ "ε","̀" },
 ["ὴ"]={ "η","̀" },
 ["ὶ"]={ "ι","̀" },
 ["ὸ"]={ "ο","̀" },
 ["ὺ"]={ "υ","̀" },
 ["ὼ"]={ "ω","̀" },
 ["ᾀ"]={ "ἀ","ͅ" },
 ["ᾁ"]={ "ἁ","ͅ" },
 ["ᾂ"]={ "ἂ","ͅ" },
 ["ᾃ"]={ "ἃ","ͅ" },
 ["ᾄ"]={ "ἄ","ͅ" },
 ["ᾅ"]={ "ἅ","ͅ" },
 ["ᾆ"]={ "ἆ","ͅ" },
 ["ᾇ"]={ "ἇ","ͅ" },
 ["ᾈ"]={ "Ἀ","ͅ" },
 ["ᾉ"]={ "Ἁ","ͅ" },
 ["ᾊ"]={ "Ἂ","ͅ" },
 ["ᾋ"]={ "Ἃ","ͅ" },
 ["ᾌ"]={ "Ἄ","ͅ" },
 ["ᾍ"]={ "Ἅ","ͅ" },
 ["ᾎ"]={ "Ἆ","ͅ" },
 ["ᾏ"]={ "Ἇ","ͅ" },
 ["ᾐ"]={ "ἠ","ͅ" },
 ["ᾑ"]={ "ἡ","ͅ" },
 ["ᾒ"]={ "ἢ","ͅ" },
 ["ᾓ"]={ "ἣ","ͅ" },
 ["ᾔ"]={ "ἤ","ͅ" },
 ["ᾕ"]={ "ἥ","ͅ" },
 ["ᾖ"]={ "ἦ","ͅ" },
 ["ᾗ"]={ "ἧ","ͅ" },
 ["ᾘ"]={ "Ἠ","ͅ" },
 ["ᾙ"]={ "Ἡ","ͅ" },
 ["ᾚ"]={ "Ἢ","ͅ" },
 ["ᾛ"]={ "Ἣ","ͅ" },
 ["ᾜ"]={ "Ἤ","ͅ" },
 ["ᾝ"]={ "Ἥ","ͅ" },
 ["ᾞ"]={ "Ἦ","ͅ" },
 ["ᾟ"]={ "Ἧ","ͅ" },
 ["ᾠ"]={ "ὠ","ͅ" },
 ["ᾡ"]={ "ὡ","ͅ" },
 ["ᾢ"]={ "ὢ","ͅ" },
 ["ᾣ"]={ "ὣ","ͅ" },
 ["ᾤ"]={ "ὤ","ͅ" },
 ["ᾥ"]={ "ὥ","ͅ" },
 ["ᾦ"]={ "ὦ","ͅ" },
 ["ᾧ"]={ "ὧ","ͅ" },
 ["ᾨ"]={ "Ὠ","ͅ" },
 ["ᾩ"]={ "Ὡ","ͅ" },
 ["ᾪ"]={ "Ὢ","ͅ" },
 ["ᾫ"]={ "Ὣ","ͅ" },
 ["ᾬ"]={ "Ὤ","ͅ" },
 ["ᾭ"]={ "Ὥ","ͅ" },
 ["ᾮ"]={ "Ὦ","ͅ" },
 ["ᾯ"]={ "Ὧ","ͅ" },
 ["ᾰ"]={ "α","̆" },
 ["ᾱ"]={ "α","̄" },
 ["ᾲ"]={ "ὰ","ͅ" },
 ["ᾳ"]={ "α","ͅ" },
 ["ᾴ"]={ "ά","ͅ" },
 ["ᾶ"]={ "α","͂" },
 ["ᾷ"]={ "ᾶ","ͅ" },
 ["Ᾰ"]={ "Α","̆" },
 ["Ᾱ"]={ "Α","̄" },
 ["Ὰ"]={ "Α","̀" },
 ["ᾼ"]={ "Α","ͅ" },
 ["῁"]={ "¨","͂" },
 ["ῂ"]={ "ὴ","ͅ" },
 ["ῃ"]={ "η","ͅ" },
 ["ῄ"]={ "ή","ͅ" },
 ["ῆ"]={ "η","͂" },
 ["ῇ"]={ "ῆ","ͅ" },
 ["Ὲ"]={ "Ε","̀" },
 ["Ὴ"]={ "Η","̀" },
 ["ῌ"]={ "Η","ͅ" },
 ["῍"]={ "᾿","̀" },
 ["῎"]={ "᾿","́" },
 ["῏"]={ "᾿","͂" },
 ["ῐ"]={ "ι","̆" },
 ["ῑ"]={ "ι","̄" },
 ["ῒ"]={ "ϊ","̀" },
 ["ῖ"]={ "ι","͂" },
 ["ῗ"]={ "ϊ","͂" },
 ["Ῐ"]={ "Ι","̆" },
 ["Ῑ"]={ "Ι","̄" },
 ["Ὶ"]={ "Ι","̀" },
 ["῝"]={ "῾","̀" },
 ["῞"]={ "῾","́" },
 ["῟"]={ "῾","͂" },
 ["ῠ"]={ "υ","̆" },
 ["ῡ"]={ "υ","̄" },
 ["ῢ"]={ "ϋ","̀" },
 ["ῤ"]={ "ρ","̓" },
 ["ῥ"]={ "ρ","̔" },
 ["ῦ"]={ "υ","͂" },
 ["ῧ"]={ "ϋ","͂" },
 ["Ῠ"]={ "Υ","̆" },
 ["Ῡ"]={ "Υ","̄" },
 ["Ὺ"]={ "Υ","̀" },
 ["Ῥ"]={ "Ρ","̔" },
 ["῭"]={ "¨","̀" },
 ["ῲ"]={ "ὼ","ͅ" },
 ["ῳ"]={ "ω","ͅ" },
 ["ῴ"]={ "ώ","ͅ" },
 ["ῶ"]={ "ω","͂" },
 ["ῷ"]={ "ῶ","ͅ" },
 ["Ὸ"]={ "Ο","̀" },
 ["Ὼ"]={ "Ω","̀" },
 ["ῼ"]={ "Ω","ͅ" },
 ["↚"]={ "←","̸" },
 ["↛"]={ "→","̸" },
 ["↮"]={ "↔","̸" },
 ["⇍"]={ "⇐","̸" },
 ["⇎"]={ "⇔","̸" },
 ["⇏"]={ "⇒","̸" },
 ["∄"]={ "∃","̸" },
 ["∉"]={ "∈","̸" },
 ["∌"]={ "∋","̸" },
 ["∤"]={ "∣","̸" },
 ["∦"]={ "∥","̸" },
 ["≁"]={ "∼","̸" },
 ["≄"]={ "≃","̸" },
 ["≇"]={ "≅","̸" },
 ["≉"]={ "≈","̸" },
 ["≠"]={ "=","̸" },
 ["≢"]={ "≡","̸" },
 ["≭"]={ "≍","̸" },
 ["≮"]={ "<","̸" },
 ["≯"]={ ">","̸" },
 ["≰"]={ "≤","̸" },
 ["≱"]={ "≥","̸" },
 ["≴"]={ "≲","̸" },
 ["≵"]={ "≳","̸" },
 ["≸"]={ "≶","̸" },
 ["≹"]={ "≷","̸" },
 ["⊀"]={ "≺","̸" },
 ["⊁"]={ "≻","̸" },
 ["⊄"]={ "⊂","̸" },
 ["⊅"]={ "⊃","̸" },
 ["⊈"]={ "⊆","̸" },
 ["⊉"]={ "⊇","̸" },
 ["⊬"]={ "⊢","̸" },
 ["⊭"]={ "⊨","̸" },
 ["⊮"]={ "⊩","̸" },
 ["⊯"]={ "⊫","̸" },
 ["⋠"]={ "≼","̸" },
 ["⋡"]={ "≽","̸" },
 ["⋢"]={ "⊑","̸" },
 ["⋣"]={ "⊒","̸" },
 ["⋪"]={ "⊲","̸" },
 ["⋫"]={ "⊳","̸" },
 ["⋬"]={ "⊴","̸" },
 ["⋭"]={ "⊵","̸" },
 ["⫝̸"]={ "⫝","̸" },
 ["が"]={ "か","゙" },
 ["ぎ"]={ "き","゙" },
 ["ぐ"]={ "く","゙" },
 ["げ"]={ "け","゙" },
 ["ご"]={ "こ","゙" },
 ["ざ"]={ "さ","゙" },
 ["じ"]={ "し","゙" },
 ["ず"]={ "す","゙" },
 ["ぜ"]={ "せ","゙" },
 ["ぞ"]={ "そ","゙" },
 ["だ"]={ "た","゙" },
 ["ぢ"]={ "ち","゙" },
 ["づ"]={ "つ","゙" },
 ["で"]={ "て","゙" },
 ["ど"]={ "と","゙" },
 ["ば"]={ "は","゙" },
 ["ぱ"]={ "は","゚" },
 ["び"]={ "ひ","゙" },
 ["ぴ"]={ "ひ","゚" },
 ["ぶ"]={ "ふ","゙" },
 ["ぷ"]={ "ふ","゚" },
 ["べ"]={ "へ","゙" },
 ["ぺ"]={ "へ","゚" },
 ["ぼ"]={ "ほ","゙" },
 ["ぽ"]={ "ほ","゚" },
 ["ゔ"]={ "う","゙" },
 ["ゞ"]={ "ゝ","゙" },
 ["ガ"]={ "カ","゙" },
 ["ギ"]={ "キ","゙" },
 ["グ"]={ "ク","゙" },
 ["ゲ"]={ "ケ","゙" },
 ["ゴ"]={ "コ","゙" },
 ["ザ"]={ "サ","゙" },
 ["ジ"]={ "シ","゙" },
 ["ズ"]={ "ス","゙" },
 ["ゼ"]={ "セ","゙" },
 ["ゾ"]={ "ソ","゙" },
 ["ダ"]={ "タ","゙" },
 ["ヂ"]={ "チ","゙" },
 ["ヅ"]={ "ツ","゙" },
 ["デ"]={ "テ","゙" },
 ["ド"]={ "ト","゙" },
 ["バ"]={ "ハ","゙" },
 ["パ"]={ "ハ","゚" },
 ["ビ"]={ "ヒ","゙" },
 ["ピ"]={ "ヒ","゚" },
 ["ブ"]={ "フ","゙" },
 ["プ"]={ "フ","゚" },
 ["ベ"]={ "ヘ","゙" },
 ["ペ"]={ "ヘ","゚" },
 ["ボ"]={ "ホ","゙" },
 ["ポ"]={ "ホ","゚" },
 ["ヴ"]={ "ウ","゙" },
 ["ヷ"]={ "ワ","゙" },
 ["ヸ"]={ "ヰ","゙" },
 ["ヹ"]={ "ヱ","゙" },
 ["ヺ"]={ "ヲ","゙" },
 ["ヾ"]={ "ヽ","゙" },
 ["יִ"]={ "י","ִ" },
 ["ײַ"]={ "ײ","ַ" },
 ["שׁ"]={ "ש","ׁ" },
 ["שׂ"]={ "ש","ׂ" },
 ["שּׁ"]={ "שּ","ׁ" },
 ["שּׂ"]={ "שּ","ׂ" },
 ["אַ"]={ "א","ַ" },
 ["אָ"]={ "א","ָ" },
 ["אּ"]={ "א","ּ" },
 ["בּ"]={ "ב","ּ" },
 ["גּ"]={ "ג","ּ" },
 ["דּ"]={ "ד","ּ" },
 ["הּ"]={ "ה","ּ" },
 ["וּ"]={ "ו","ּ" },
 ["זּ"]={ "ז","ּ" },
 ["טּ"]={ "ט","ּ" },
 ["יּ"]={ "י","ּ" },
 ["ךּ"]={ "ך","ּ" },
 ["כּ"]={ "כ","ּ" },
 ["לּ"]={ "ל","ּ" },
 ["מּ"]={ "מ","ּ" },
 ["נּ"]={ "נ","ּ" },
 ["סּ"]={ "ס","ּ" },
 ["ףּ"]={ "ף","ּ" },
 ["פּ"]={ "פ","ּ" },
 ["צּ"]={ "צ","ּ" },
 ["קּ"]={ "ק","ּ" },
 ["רּ"]={ "ר","ּ" },
 ["שּ"]={ "ש","ּ" },
 ["תּ"]={ "ת","ּ" },
 ["וֹ"]={ "ו","ֹ" },
 ["בֿ"]={ "ב","ֿ" },
 ["כֿ"]={ "כ","ֿ" },
 ["פֿ"]={ "פ","ֿ" },
 ["𑂚"]={ "𑂙","𑂺" },
 ["𑂜"]={ "𑂛","𑂺" },
 ["𑂫"]={ "𑂥","𑂺" },
 ["𑄮"]={ "𑄱","𑄧" },
 ["𑄯"]={ "𑄲","𑄧" },
 ["𑍋"]={ "𑍇","𑌾" },
 ["𑍌"]={ "𑍇","𑍗" },
 ["𑒻"]={ "𑒹","𑒺" },
 ["𑒼"]={ "𑒹","𑒰" },
 ["𑒾"]={ "𑒹","𑒽" },
 ["𑖺"]={ "𑖸","𑖯" },
 ["𑖻"]={ "𑖹","𑖯" },
 ["𝅗𝅥"]={ "𝅗","𝅥" },
 ["𝅘𝅥"]={ "𝅘","𝅥" },
 ["𝅘𝅥𝅮"]={ "𝅘𝅥","𝅮" },
 ["𝅘𝅥𝅯"]={ "𝅘𝅥","𝅯" },
 ["𝅘𝅥𝅰"]={ "𝅘𝅥","𝅰" },
 ["𝅘𝅥𝅱"]={ "𝅘𝅥","𝅱" },
 ["𝅘𝅥𝅲"]={ "𝅘𝅥","𝅲" },
 ["𝆹𝅥"]={ "𝆹","𝅥" },
 ["𝆺𝅥"]={ "𝆺","𝅥" },
 ["𝆹𝅥𝅮"]={ "𝆹𝅥","𝅮" },
 ["𝆺𝅥𝅮"]={ "𝆺𝅥","𝅮" },
 ["𝆹𝅥𝅯"]={ "𝆹𝅥","𝅯" },
 ["𝆺𝅥𝅯"]={ "𝆺𝅥","𝅯" },
   },
  },
  {
   ["data"]={
 ["À"]={ "A","̀" },
 ["Á"]={ "A","́" },
 ["Â"]={ "A","̂" },
 ["Ã"]={ "A","̃" },
 ["Ä"]={ "A","̈" },
 ["Å"]={ "A","̊" },
 ["Ç"]={ "C","̧" },
 ["È"]={ "E","̀" },
 ["É"]={ "E","́" },
 ["Ê"]={ "E","̂" },
 ["Ë"]={ "E","̈" },
 ["Ì"]={ "I","̀" },
 ["Í"]={ "I","́" },
 ["Î"]={ "I","̂" },
 ["Ï"]={ "I","̈" },
 ["Ñ"]={ "N","̃" },
 ["Ò"]={ "O","̀" },
 ["Ó"]={ "O","́" },
 ["Ô"]={ "O","̂" },
 ["Õ"]={ "O","̃" },
 ["Ö"]={ "O","̈" },
 ["Ù"]={ "U","̀" },
 ["Ú"]={ "U","́" },
 ["Û"]={ "U","̂" },
 ["Ü"]={ "U","̈" },
 ["Ý"]={ "Y","́" },
 ["à"]={ "a","̀" },
 ["á"]={ "a","́" },
 ["â"]={ "a","̂" },
 ["ã"]={ "a","̃" },
 ["ä"]={ "a","̈" },
 ["å"]={ "a","̊" },
 ["ç"]={ "c","̧" },
 ["è"]={ "e","̀" },
 ["é"]={ "e","́" },
 ["ê"]={ "e","̂" },
 ["ë"]={ "e","̈" },
 ["ì"]={ "i","̀" },
 ["í"]={ "i","́" },
 ["î"]={ "i","̂" },
 ["ï"]={ "i","̈" },
 ["ñ"]={ "n","̃" },
 ["ò"]={ "o","̀" },
 ["ó"]={ "o","́" },
 ["ô"]={ "o","̂" },
 ["õ"]={ "o","̃" },
 ["ö"]={ "o","̈" },
 ["ù"]={ "u","̀" },
 ["ú"]={ "u","́" },
 ["û"]={ "u","̂" },
 ["ü"]={ "u","̈" },
 ["ý"]={ "y","́" },
 ["ÿ"]={ "y","̈" },
 ["Ā"]={ "A","̄" },
 ["ā"]={ "a","̄" },
 ["Ă"]={ "A","̆" },
 ["ă"]={ "a","̆" },
 ["Ą"]={ "A","̨" },
 ["ą"]={ "a","̨" },
 ["Ć"]={ "C","́" },
 ["ć"]={ "c","́" },
 ["Ĉ"]={ "C","̂" },
 ["ĉ"]={ "c","̂" },
 ["Ċ"]={ "C","̇" },
 ["ċ"]={ "c","̇" },
 ["Č"]={ "C","̌" },
 ["č"]={ "c","̌" },
 ["Ď"]={ "D","̌" },
 ["ď"]={ "d","̌" },
 ["Ē"]={ "E","̄" },
 ["ē"]={ "e","̄" },
 ["Ĕ"]={ "E","̆" },
 ["ĕ"]={ "e","̆" },
 ["Ė"]={ "E","̇" },
 ["ė"]={ "e","̇" },
 ["Ę"]={ "E","̨" },
 ["ę"]={ "e","̨" },
 ["Ě"]={ "E","̌" },
 ["ě"]={ "e","̌" },
 ["Ĝ"]={ "G","̂" },
 ["ĝ"]={ "g","̂" },
 ["Ğ"]={ "G","̆" },
 ["ğ"]={ "g","̆" },
 ["Ġ"]={ "G","̇" },
 ["ġ"]={ "g","̇" },
 ["Ģ"]={ "G","̧" },
 ["ģ"]={ "g","̧" },
 ["Ĥ"]={ "H","̂" },
 ["ĥ"]={ "h","̂" },
 ["Ĩ"]={ "I","̃" },
 ["ĩ"]={ "i","̃" },
 ["Ī"]={ "I","̄" },
 ["ī"]={ "i","̄" },
 ["Ĭ"]={ "I","̆" },
 ["ĭ"]={ "i","̆" },
 ["Į"]={ "I","̨" },
 ["į"]={ "i","̨" },
 ["İ"]={ "I","̇" },
 ["Ĵ"]={ "J","̂" },
 ["ĵ"]={ "j","̂" },
 ["Ķ"]={ "K","̧" },
 ["ķ"]={ "k","̧" },
 ["Ĺ"]={ "L","́" },
 ["ĺ"]={ "l","́" },
 ["Ļ"]={ "L","̧" },
 ["ļ"]={ "l","̧" },
 ["Ľ"]={ "L","̌" },
 ["ľ"]={ "l","̌" },
 ["Ń"]={ "N","́" },
 ["ń"]={ "n","́" },
 ["Ņ"]={ "N","̧" },
 ["ņ"]={ "n","̧" },
 ["Ň"]={ "N","̌" },
 ["ň"]={ "n","̌" },
 ["Ō"]={ "O","̄" },
 ["ō"]={ "o","̄" },
 ["Ŏ"]={ "O","̆" },
 ["ŏ"]={ "o","̆" },
 ["Ő"]={ "O","̋" },
 ["ő"]={ "o","̋" },
 ["Ŕ"]={ "R","́" },
 ["ŕ"]={ "r","́" },
 ["Ŗ"]={ "R","̧" },
 ["ŗ"]={ "r","̧" },
 ["Ř"]={ "R","̌" },
 ["ř"]={ "r","̌" },
 ["Ś"]={ "S","́" },
 ["ś"]={ "s","́" },
 ["Ŝ"]={ "S","̂" },
 ["ŝ"]={ "s","̂" },
 ["Ş"]={ "S","̧" },
 ["ş"]={ "s","̧" },
 ["Š"]={ "S","̌" },
 ["š"]={ "s","̌" },
 ["Ţ"]={ "T","̧" },
 ["ţ"]={ "t","̧" },
 ["Ť"]={ "T","̌" },
 ["ť"]={ "t","̌" },
 ["Ũ"]={ "U","̃" },
 ["ũ"]={ "u","̃" },
 ["Ū"]={ "U","̄" },
 ["ū"]={ "u","̄" },
 ["Ŭ"]={ "U","̆" },
 ["ŭ"]={ "u","̆" },
 ["Ů"]={ "U","̊" },
 ["ů"]={ "u","̊" },
 ["Ű"]={ "U","̋" },
 ["ű"]={ "u","̋" },
 ["Ų"]={ "U","̨" },
 ["ų"]={ "u","̨" },
 ["Ŵ"]={ "W","̂" },
 ["ŵ"]={ "w","̂" },
 ["Ŷ"]={ "Y","̂" },
 ["ŷ"]={ "y","̂" },
 ["Ÿ"]={ "Y","̈" },
 ["Ź"]={ "Z","́" },
 ["ź"]={ "z","́" },
 ["Ż"]={ "Z","̇" },
 ["ż"]={ "z","̇" },
 ["Ž"]={ "Z","̌" },
 ["ž"]={ "z","̌" },
 ["Ơ"]={ "O","̛" },
 ["ơ"]={ "o","̛" },
 ["Ư"]={ "U","̛" },
 ["ư"]={ "u","̛" },
 ["Ǎ"]={ "A","̌" },
 ["ǎ"]={ "a","̌" },
 ["Ǐ"]={ "I","̌" },
 ["ǐ"]={ "i","̌" },
 ["Ǒ"]={ "O","̌" },
 ["ǒ"]={ "o","̌" },
 ["Ǔ"]={ "U","̌" },
 ["ǔ"]={ "u","̌" },
 ["Ǖ"]={ "Ü","̄" },
 ["ǖ"]={ "ü","̄" },
 ["Ǘ"]={ "Ü","́" },
 ["ǘ"]={ "ü","́" },
 ["Ǚ"]={ "Ü","̌" },
 ["ǚ"]={ "ü","̌" },
 ["Ǜ"]={ "Ü","̀" },
 ["ǜ"]={ "ü","̀" },
 ["Ǟ"]={ "Ä","̄" },
 ["ǟ"]={ "ä","̄" },
 ["Ǡ"]={ "Ȧ","̄" },
 ["ǡ"]={ "ȧ","̄" },
 ["Ǣ"]={ "Æ","̄" },
 ["ǣ"]={ "æ","̄" },
 ["Ǧ"]={ "G","̌" },
 ["ǧ"]={ "g","̌" },
 ["Ǩ"]={ "K","̌" },
 ["ǩ"]={ "k","̌" },
 ["Ǫ"]={ "O","̨" },
 ["ǫ"]={ "o","̨" },
 ["Ǭ"]={ "Ǫ","̄" },
 ["ǭ"]={ "ǫ","̄" },
 ["Ǯ"]={ "Ʒ","̌" },
 ["ǯ"]={ "ʒ","̌" },
 ["ǰ"]={ "j","̌" },
 ["Ǵ"]={ "G","́" },
 ["ǵ"]={ "g","́" },
 ["Ǹ"]={ "N","̀" },
 ["ǹ"]={ "n","̀" },
 ["Ǻ"]={ "Å","́" },
 ["ǻ"]={ "å","́" },
 ["Ǽ"]={ "Æ","́" },
 ["ǽ"]={ "æ","́" },
 ["Ǿ"]={ "Ø","́" },
 ["ǿ"]={ "ø","́" },
 ["Ȁ"]={ "A","̏" },
 ["ȁ"]={ "a","̏" },
 ["Ȃ"]={ "A","̑" },
 ["ȃ"]={ "a","̑" },
 ["Ȅ"]={ "E","̏" },
 ["ȅ"]={ "e","̏" },
 ["Ȇ"]={ "E","̑" },
 ["ȇ"]={ "e","̑" },
 ["Ȉ"]={ "I","̏" },
 ["ȉ"]={ "i","̏" },
 ["Ȋ"]={ "I","̑" },
 ["ȋ"]={ "i","̑" },
 ["Ȍ"]={ "O","̏" },
 ["ȍ"]={ "o","̏" },
 ["Ȏ"]={ "O","̑" },
 ["ȏ"]={ "o","̑" },
 ["Ȑ"]={ "R","̏" },
 ["ȑ"]={ "r","̏" },
 ["Ȓ"]={ "R","̑" },
 ["ȓ"]={ "r","̑" },
 ["Ȕ"]={ "U","̏" },
 ["ȕ"]={ "u","̏" },
 ["Ȗ"]={ "U","̑" },
 ["ȗ"]={ "u","̑" },
 ["Ș"]={ "S","̦" },
 ["ș"]={ "s","̦" },
 ["Ț"]={ "T","̦" },
 ["ț"]={ "t","̦" },
 ["Ȟ"]={ "H","̌" },
 ["ȟ"]={ "h","̌" },
 ["Ȧ"]={ "A","̇" },
 ["ȧ"]={ "a","̇" },
 ["Ȩ"]={ "E","̧" },
 ["ȩ"]={ "e","̧" },
 ["Ȫ"]={ "Ö","̄" },
 ["ȫ"]={ "ö","̄" },
 ["Ȭ"]={ "Õ","̄" },
 ["ȭ"]={ "õ","̄" },
 ["Ȯ"]={ "O","̇" },
 ["ȯ"]={ "o","̇" },
 ["Ȱ"]={ "Ȯ","̄" },
 ["ȱ"]={ "ȯ","̄" },
 ["Ȳ"]={ "Y","̄" },
 ["ȳ"]={ "y","̄" },
 ["̈́"]={ "̈","́" },
 ["΅"]={ "¨","́" },
 ["Ά"]={ "Α","́" },
 ["Έ"]={ "Ε","́" },
 ["Ή"]={ "Η","́" },
 ["Ί"]={ "Ι","́" },
 ["Ό"]={ "Ο","́" },
 ["Ύ"]={ "Υ","́" },
 ["Ώ"]={ "Ω","́" },
 ["ΐ"]={ "ϊ","́" },
 ["Ϊ"]={ "Ι","̈" },
 ["Ϋ"]={ "Υ","̈" },
 ["ά"]={ "α","́" },
 ["έ"]={ "ε","́" },
 ["ή"]={ "η","́" },
 ["ί"]={ "ι","́" },
 ["ΰ"]={ "ϋ","́" },
 ["ϊ"]={ "ι","̈" },
 ["ϋ"]={ "υ","̈" },
 ["ό"]={ "ο","́" },
 ["ύ"]={ "υ","́" },
 ["ώ"]={ "ω","́" },
 ["ϓ"]={ "ϒ","́" },
 ["ϔ"]={ "ϒ","̈" },
 ["Ѐ"]={ "Е","̀" },
 ["Ё"]={ "Е","̈" },
 ["Ѓ"]={ "Г","́" },
 ["Ї"]={ "І","̈" },
 ["Ќ"]={ "К","́" },
 ["Ѝ"]={ "И","̀" },
 ["Ў"]={ "У","̆" },
 ["Й"]={ "И","̆" },
 ["й"]={ "и","̆" },
 ["ѐ"]={ "е","̀" },
 ["ё"]={ "е","̈" },
 ["ѓ"]={ "г","́" },
 ["ї"]={ "і","̈" },
 ["ќ"]={ "к","́" },
 ["ѝ"]={ "и","̀" },
 ["ў"]={ "у","̆" },
 ["Ѷ"]={ "Ѵ","̏" },
 ["ѷ"]={ "ѵ","̏" },
 ["Ӂ"]={ "Ж","̆" },
 ["ӂ"]={ "ж","̆" },
 ["Ӑ"]={ "А","̆" },
 ["ӑ"]={ "а","̆" },
 ["Ӓ"]={ "А","̈" },
 ["ӓ"]={ "а","̈" },
 ["Ӗ"]={ "Е","̆" },
 ["ӗ"]={ "е","̆" },
 ["Ӛ"]={ "Ә","̈" },
 ["ӛ"]={ "ә","̈" },
 ["Ӝ"]={ "Ж","̈" },
 ["ӝ"]={ "ж","̈" },
 ["Ӟ"]={ "З","̈" },
 ["ӟ"]={ "з","̈" },
 ["Ӣ"]={ "И","̄" },
 ["ӣ"]={ "и","̄" },
 ["Ӥ"]={ "И","̈" },
 ["ӥ"]={ "и","̈" },
 ["Ӧ"]={ "О","̈" },
 ["ӧ"]={ "о","̈" },
 ["Ӫ"]={ "Ө","̈" },
 ["ӫ"]={ "ө","̈" },
 ["Ӭ"]={ "Э","̈" },
 ["ӭ"]={ "э","̈" },
 ["Ӯ"]={ "У","̄" },
 ["ӯ"]={ "у","̄" },
 ["Ӱ"]={ "У","̈" },
 ["ӱ"]={ "у","̈" },
 ["Ӳ"]={ "У","̋" },
 ["ӳ"]={ "у","̋" },
 ["Ӵ"]={ "Ч","̈" },
 ["ӵ"]={ "ч","̈" },
 ["Ӹ"]={ "Ы","̈" },
 ["ӹ"]={ "ы","̈" },
 ["آ"]={ "ا","ٓ" },
 ["أ"]={ "ا","ٔ" },
 ["ؤ"]={ "و","ٔ" },
 ["إ"]={ "ا","ٕ" },
 ["ئ"]={ "ي","ٔ" },
 ["ۀ"]={ "ە","ٔ" },
 ["ۂ"]={ "ہ","ٔ" },
 ["ۓ"]={ "ے","ٔ" },
 ["ऩ"]={ "न","़" },
 ["ऱ"]={ "र","़" },
 ["ऴ"]={ "ळ","़" },
 ["क़"]={ "क","़" },
 ["ख़"]={ "ख","़" },
 ["ग़"]={ "ग","़" },
 ["ज़"]={ "ज","़" },
 ["ड़"]={ "ड","़" },
 ["ढ़"]={ "ढ","़" },
 ["फ़"]={ "फ","़" },
 ["य़"]={ "य","़" },
 ["ো"]={ "ে","া" },
 ["ৌ"]={ "ে","ৗ" },
 ["ড়"]={ "ড","়" },
 ["ঢ়"]={ "ঢ","়" },
 ["য়"]={ "য","়" },
 ["ਲ਼"]={ "ਲ","਼" },
 ["ਸ਼"]={ "ਸ","਼" },
 ["ਖ਼"]={ "ਖ","਼" },
 ["ਗ਼"]={ "ਗ","਼" },
 ["ਜ਼"]={ "ਜ","਼" },
 ["ਫ਼"]={ "ਫ","਼" },
 ["ୈ"]={ "େ","ୖ" },
 ["ୋ"]={ "େ","ା" },
 ["ୌ"]={ "େ","ୗ" },
 ["ଡ଼"]={ "ଡ","଼" },
 ["ଢ଼"]={ "ଢ","଼" },
 ["ஔ"]={ "ஒ","ௗ" },
 ["ொ"]={ "ெ","ா" },
 ["ோ"]={ "ே","ா" },
 ["ௌ"]={ "ெ","ௗ" },
 ["ై"]={ "ె","ౖ" },
 ["ೀ"]={ "ಿ","ೕ" },
 ["ೇ"]={ "ೆ","ೕ" },
 ["ೈ"]={ "ೆ","ೖ" },
 ["ೊ"]={ "ೆ","ೂ" },
 ["ೋ"]={ "ೊ","ೕ" },
 ["ൊ"]={ "െ","ാ" },
 ["ോ"]={ "േ","ാ" },
 ["ൌ"]={ "െ","ൗ" },
 ["ේ"]={ "ෙ","්" },
 ["ො"]={ "ෙ","ා" },
 ["ෝ"]={ "ො","්" },
 ["ෞ"]={ "ෙ","ෟ" },
 ["གྷ"]={ "ག","ྷ" },
 ["ཌྷ"]={ "ཌ","ྷ" },
 ["དྷ"]={ "ད","ྷ" },
 ["བྷ"]={ "བ","ྷ" },
 ["ཛྷ"]={ "ཛ","ྷ" },
 ["ཀྵ"]={ "ཀ","ྵ" },
 ["ཱི"]={ "ཱ","ི" },
 ["ཱུ"]={ "ཱ","ུ" },
 ["ྲྀ"]={ "ྲ","ྀ" },
 ["ླྀ"]={ "ླ","ྀ" },
 ["ཱྀ"]={ "ཱ","ྀ" },
 ["ྒྷ"]={ "ྒ","ྷ" },
 ["ྜྷ"]={ "ྜ","ྷ" },
 ["ྡྷ"]={ "ྡ","ྷ" },
 ["ྦྷ"]={ "ྦ","ྷ" },
 ["ྫྷ"]={ "ྫ","ྷ" },
 ["ྐྵ"]={ "ྐ","ྵ" },
 ["ဦ"]={ "ဥ","ီ" },
 ["ᬆ"]={ "ᬅ","ᬵ" },
 ["ᬈ"]={ "ᬇ","ᬵ" },
 ["ᬊ"]={ "ᬉ","ᬵ" },
 ["ᬌ"]={ "ᬋ","ᬵ" },
 ["ᬎ"]={ "ᬍ","ᬵ" },
 ["ᬒ"]={ "ᬑ","ᬵ" },
 ["ᬻ"]={ "ᬺ","ᬵ" },
 ["ᬽ"]={ "ᬼ","ᬵ" },
 ["ᭀ"]={ "ᬾ","ᬵ" },
 ["ᭁ"]={ "ᬿ","ᬵ" },
 ["ᭃ"]={ "ᭂ","ᬵ" },
 ["Ḁ"]={ "A","̥" },
 ["ḁ"]={ "a","̥" },
 ["Ḃ"]={ "B","̇" },
 ["ḃ"]={ "b","̇" },
 ["Ḅ"]={ "B","̣" },
 ["ḅ"]={ "b","̣" },
 ["Ḇ"]={ "B","̱" },
 ["ḇ"]={ "b","̱" },
 ["Ḉ"]={ "Ç","́" },
 ["ḉ"]={ "ç","́" },
 ["Ḋ"]={ "D","̇" },
 ["ḋ"]={ "d","̇" },
 ["Ḍ"]={ "D","̣" },
 ["ḍ"]={ "d","̣" },
 ["Ḏ"]={ "D","̱" },
 ["ḏ"]={ "d","̱" },
 ["Ḑ"]={ "D","̧" },
 ["ḑ"]={ "d","̧" },
 ["Ḓ"]={ "D","̭" },
 ["ḓ"]={ "d","̭" },
 ["Ḕ"]={ "Ē","̀" },
 ["ḕ"]={ "ē","̀" },
 ["Ḗ"]={ "Ē","́" },
 ["ḗ"]={ "ē","́" },
 ["Ḙ"]={ "E","̭" },
 ["ḙ"]={ "e","̭" },
 ["Ḛ"]={ "E","̰" },
 ["ḛ"]={ "e","̰" },
 ["Ḝ"]={ "Ȩ","̆" },
 ["ḝ"]={ "ȩ","̆" },
 ["Ḟ"]={ "F","̇" },
 ["ḟ"]={ "f","̇" },
 ["Ḡ"]={ "G","̄" },
 ["ḡ"]={ "g","̄" },
 ["Ḣ"]={ "H","̇" },
 ["ḣ"]={ "h","̇" },
 ["Ḥ"]={ "H","̣" },
 ["ḥ"]={ "h","̣" },
 ["Ḧ"]={ "H","̈" },
 ["ḧ"]={ "h","̈" },
 ["Ḩ"]={ "H","̧" },
 ["ḩ"]={ "h","̧" },
 ["Ḫ"]={ "H","̮" },
 ["ḫ"]={ "h","̮" },
 ["Ḭ"]={ "I","̰" },
 ["ḭ"]={ "i","̰" },
 ["Ḯ"]={ "Ï","́" },
 ["ḯ"]={ "ï","́" },
 ["Ḱ"]={ "K","́" },
 ["ḱ"]={ "k","́" },
 ["Ḳ"]={ "K","̣" },
 ["ḳ"]={ "k","̣" },
 ["Ḵ"]={ "K","̱" },
 ["ḵ"]={ "k","̱" },
 ["Ḷ"]={ "L","̣" },
 ["ḷ"]={ "l","̣" },
 ["Ḹ"]={ "Ḷ","̄" },
 ["ḹ"]={ "ḷ","̄" },
 ["Ḻ"]={ "L","̱" },
 ["ḻ"]={ "l","̱" },
 ["Ḽ"]={ "L","̭" },
 ["ḽ"]={ "l","̭" },
 ["Ḿ"]={ "M","́" },
 ["ḿ"]={ "m","́" },
 ["Ṁ"]={ "M","̇" },
 ["ṁ"]={ "m","̇" },
 ["Ṃ"]={ "M","̣" },
 ["ṃ"]={ "m","̣" },
 ["Ṅ"]={ "N","̇" },
 ["ṅ"]={ "n","̇" },
 ["Ṇ"]={ "N","̣" },
 ["ṇ"]={ "n","̣" },
 ["Ṉ"]={ "N","̱" },
 ["ṉ"]={ "n","̱" },
 ["Ṋ"]={ "N","̭" },
 ["ṋ"]={ "n","̭" },
 ["Ṍ"]={ "Õ","́" },
 ["ṍ"]={ "õ","́" },
 ["Ṏ"]={ "Õ","̈" },
 ["ṏ"]={ "õ","̈" },
 ["Ṑ"]={ "Ō","̀" },
 ["ṑ"]={ "ō","̀" },
 ["Ṓ"]={ "Ō","́" },
 ["ṓ"]={ "ō","́" },
 ["Ṕ"]={ "P","́" },
 ["ṕ"]={ "p","́" },
 ["Ṗ"]={ "P","̇" },
 ["ṗ"]={ "p","̇" },
 ["Ṙ"]={ "R","̇" },
 ["ṙ"]={ "r","̇" },
 ["Ṛ"]={ "R","̣" },
 ["ṛ"]={ "r","̣" },
 ["Ṝ"]={ "Ṛ","̄" },
 ["ṝ"]={ "ṛ","̄" },
 ["Ṟ"]={ "R","̱" },
 ["ṟ"]={ "r","̱" },
 ["Ṡ"]={ "S","̇" },
 ["ṡ"]={ "s","̇" },
 ["Ṣ"]={ "S","̣" },
 ["ṣ"]={ "s","̣" },
 ["Ṥ"]={ "Ś","̇" },
 ["ṥ"]={ "ś","̇" },
 ["Ṧ"]={ "Š","̇" },
 ["ṧ"]={ "š","̇" },
 ["Ṩ"]={ "Ṣ","̇" },
 ["ṩ"]={ "ṣ","̇" },
 ["Ṫ"]={ "T","̇" },
 ["ṫ"]={ "t","̇" },
 ["Ṭ"]={ "T","̣" },
 ["ṭ"]={ "t","̣" },
 ["Ṯ"]={ "T","̱" },
 ["ṯ"]={ "t","̱" },
 ["Ṱ"]={ "T","̭" },
 ["ṱ"]={ "t","̭" },
 ["Ṳ"]={ "U","̤" },
 ["ṳ"]={ "u","̤" },
 ["Ṵ"]={ "U","̰" },
 ["ṵ"]={ "u","̰" },
 ["Ṷ"]={ "U","̭" },
 ["ṷ"]={ "u","̭" },
 ["Ṹ"]={ "Ũ","́" },
 ["ṹ"]={ "ũ","́" },
 ["Ṻ"]={ "Ū","̈" },
 ["ṻ"]={ "ū","̈" },
 ["Ṽ"]={ "V","̃" },
 ["ṽ"]={ "v","̃" },
 ["Ṿ"]={ "V","̣" },
 ["ṿ"]={ "v","̣" },
 ["Ẁ"]={ "W","̀" },
 ["ẁ"]={ "w","̀" },
 ["Ẃ"]={ "W","́" },
 ["ẃ"]={ "w","́" },
 ["Ẅ"]={ "W","̈" },
 ["ẅ"]={ "w","̈" },
 ["Ẇ"]={ "W","̇" },
 ["ẇ"]={ "w","̇" },
 ["Ẉ"]={ "W","̣" },
 ["ẉ"]={ "w","̣" },
 ["Ẋ"]={ "X","̇" },
 ["ẋ"]={ "x","̇" },
 ["Ẍ"]={ "X","̈" },
 ["ẍ"]={ "x","̈" },
 ["Ẏ"]={ "Y","̇" },
 ["ẏ"]={ "y","̇" },
 ["Ẑ"]={ "Z","̂" },
 ["ẑ"]={ "z","̂" },
 ["Ẓ"]={ "Z","̣" },
 ["ẓ"]={ "z","̣" },
 ["Ẕ"]={ "Z","̱" },
 ["ẕ"]={ "z","̱" },
 ["ẖ"]={ "h","̱" },
 ["ẗ"]={ "t","̈" },
 ["ẘ"]={ "w","̊" },
 ["ẙ"]={ "y","̊" },
 ["ẛ"]={ "ſ","̇" },
 ["Ạ"]={ "A","̣" },
 ["ạ"]={ "a","̣" },
 ["Ả"]={ "A","̉" },
 ["ả"]={ "a","̉" },
 ["Ấ"]={ "Â","́" },
 ["ấ"]={ "â","́" },
 ["Ầ"]={ "Â","̀" },
 ["ầ"]={ "â","̀" },
 ["Ẩ"]={ "Â","̉" },
 ["ẩ"]={ "â","̉" },
 ["Ẫ"]={ "Â","̃" },
 ["ẫ"]={ "â","̃" },
 ["Ậ"]={ "Ạ","̂" },
 ["ậ"]={ "ạ","̂" },
 ["Ắ"]={ "Ă","́" },
 ["ắ"]={ "ă","́" },
 ["Ằ"]={ "Ă","̀" },
 ["ằ"]={ "ă","̀" },
 ["Ẳ"]={ "Ă","̉" },
 ["ẳ"]={ "ă","̉" },
 ["Ẵ"]={ "Ă","̃" },
 ["ẵ"]={ "ă","̃" },
 ["Ặ"]={ "Ạ","̆" },
 ["ặ"]={ "ạ","̆" },
 ["Ẹ"]={ "E","̣" },
 ["ẹ"]={ "e","̣" },
 ["Ẻ"]={ "E","̉" },
 ["ẻ"]={ "e","̉" },
 ["Ẽ"]={ "E","̃" },
 ["ẽ"]={ "e","̃" },
 ["Ế"]={ "Ê","́" },
 ["ế"]={ "ê","́" },
 ["Ề"]={ "Ê","̀" },
 ["ề"]={ "ê","̀" },
 ["Ể"]={ "Ê","̉" },
 ["ể"]={ "ê","̉" },
 ["Ễ"]={ "Ê","̃" },
 ["ễ"]={ "ê","̃" },
 ["Ệ"]={ "Ẹ","̂" },
 ["ệ"]={ "ẹ","̂" },
 ["Ỉ"]={ "I","̉" },
 ["ỉ"]={ "i","̉" },
 ["Ị"]={ "I","̣" },
 ["ị"]={ "i","̣" },
 ["Ọ"]={ "O","̣" },
 ["ọ"]={ "o","̣" },
 ["Ỏ"]={ "O","̉" },
 ["ỏ"]={ "o","̉" },
 ["Ố"]={ "Ô","́" },
 ["ố"]={ "ô","́" },
 ["Ồ"]={ "Ô","̀" },
 ["ồ"]={ "ô","̀" },
 ["Ổ"]={ "Ô","̉" },
 ["ổ"]={ "ô","̉" },
 ["Ỗ"]={ "Ô","̃" },
 ["ỗ"]={ "ô","̃" },
 ["Ộ"]={ "Ọ","̂" },
 ["ộ"]={ "ọ","̂" },
 ["Ớ"]={ "Ơ","́" },
 ["ớ"]={ "ơ","́" },
 ["Ờ"]={ "Ơ","̀" },
 ["ờ"]={ "ơ","̀" },
 ["Ở"]={ "Ơ","̉" },
 ["ở"]={ "ơ","̉" },
 ["Ỡ"]={ "Ơ","̃" },
 ["ỡ"]={ "ơ","̃" },
 ["Ợ"]={ "Ơ","̣" },
 ["ợ"]={ "ơ","̣" },
 ["Ụ"]={ "U","̣" },
 ["ụ"]={ "u","̣" },
 ["Ủ"]={ "U","̉" },
 ["ủ"]={ "u","̉" },
 ["Ứ"]={ "Ư","́" },
 ["ứ"]={ "ư","́" },
 ["Ừ"]={ "Ư","̀" },
 ["ừ"]={ "ư","̀" },
 ["Ử"]={ "Ư","̉" },
 ["ử"]={ "ư","̉" },
 ["Ữ"]={ "Ư","̃" },
 ["ữ"]={ "ư","̃" },
 ["Ự"]={ "Ư","̣" },
 ["ự"]={ "ư","̣" },
 ["Ỳ"]={ "Y","̀" },
 ["ỳ"]={ "y","̀" },
 ["Ỵ"]={ "Y","̣" },
 ["ỵ"]={ "y","̣" },
 ["Ỷ"]={ "Y","̉" },
 ["ỷ"]={ "y","̉" },
 ["Ỹ"]={ "Y","̃" },
 ["ỹ"]={ "y","̃" },
 ["ἀ"]={ "α","̓" },
 ["ἁ"]={ "α","̔" },
 ["ἂ"]={ "ἀ","̀" },
 ["ἃ"]={ "ἁ","̀" },
 ["ἄ"]={ "ἀ","́" },
 ["ἅ"]={ "ἁ","́" },
 ["ἆ"]={ "ἀ","͂" },
 ["ἇ"]={ "ἁ","͂" },
 ["Ἀ"]={ "Α","̓" },
 ["Ἁ"]={ "Α","̔" },
 ["Ἂ"]={ "Ἀ","̀" },
 ["Ἃ"]={ "Ἁ","̀" },
 ["Ἄ"]={ "Ἀ","́" },
 ["Ἅ"]={ "Ἁ","́" },
 ["Ἆ"]={ "Ἀ","͂" },
 ["Ἇ"]={ "Ἁ","͂" },
 ["ἐ"]={ "ε","̓" },
 ["ἑ"]={ "ε","̔" },
 ["ἒ"]={ "ἐ","̀" },
 ["ἓ"]={ "ἑ","̀" },
 ["ἔ"]={ "ἐ","́" },
 ["ἕ"]={ "ἑ","́" },
 ["Ἐ"]={ "Ε","̓" },
 ["Ἑ"]={ "Ε","̔" },
 ["Ἒ"]={ "Ἐ","̀" },
 ["Ἓ"]={ "Ἑ","̀" },
 ["Ἔ"]={ "Ἐ","́" },
 ["Ἕ"]={ "Ἑ","́" },
 ["ἠ"]={ "η","̓" },
 ["ἡ"]={ "η","̔" },
 ["ἢ"]={ "ἠ","̀" },
 ["ἣ"]={ "ἡ","̀" },
 ["ἤ"]={ "ἠ","́" },
 ["ἥ"]={ "ἡ","́" },
 ["ἦ"]={ "ἠ","͂" },
 ["ἧ"]={ "ἡ","͂" },
 ["Ἠ"]={ "Η","̓" },
 ["Ἡ"]={ "Η","̔" },
 ["Ἢ"]={ "Ἠ","̀" },
 ["Ἣ"]={ "Ἡ","̀" },
 ["Ἤ"]={ "Ἠ","́" },
 ["Ἥ"]={ "Ἡ","́" },
 ["Ἦ"]={ "Ἠ","͂" },
 ["Ἧ"]={ "Ἡ","͂" },
 ["ἰ"]={ "ι","̓" },
 ["ἱ"]={ "ι","̔" },
 ["ἲ"]={ "ἰ","̀" },
 ["ἳ"]={ "ἱ","̀" },
 ["ἴ"]={ "ἰ","́" },
 ["ἵ"]={ "ἱ","́" },
 ["ἶ"]={ "ἰ","͂" },
 ["ἷ"]={ "ἱ","͂" },
 ["Ἰ"]={ "Ι","̓" },
 ["Ἱ"]={ "Ι","̔" },
 ["Ἲ"]={ "Ἰ","̀" },
 ["Ἳ"]={ "Ἱ","̀" },
 ["Ἴ"]={ "Ἰ","́" },
 ["Ἵ"]={ "Ἱ","́" },
 ["Ἶ"]={ "Ἰ","͂" },
 ["Ἷ"]={ "Ἱ","͂" },
 ["ὀ"]={ "ο","̓" },
 ["ὁ"]={ "ο","̔" },
 ["ὂ"]={ "ὀ","̀" },
 ["ὃ"]={ "ὁ","̀" },
 ["ὄ"]={ "ὀ","́" },
 ["ὅ"]={ "ὁ","́" },
 ["Ὀ"]={ "Ο","̓" },
 ["Ὁ"]={ "Ο","̔" },
 ["Ὂ"]={ "Ὀ","̀" },
 ["Ὃ"]={ "Ὁ","̀" },
 ["Ὄ"]={ "Ὀ","́" },
 ["Ὅ"]={ "Ὁ","́" },
 ["ὐ"]={ "υ","̓" },
 ["ὑ"]={ "υ","̔" },
 ["ὒ"]={ "ὐ","̀" },
 ["ὓ"]={ "ὑ","̀" },
 ["ὔ"]={ "ὐ","́" },
 ["ὕ"]={ "ὑ","́" },
 ["ὖ"]={ "ὐ","͂" },
 ["ὗ"]={ "ὑ","͂" },
 ["Ὑ"]={ "Υ","̔" },
 ["Ὓ"]={ "Ὑ","̀" },
 ["Ὕ"]={ "Ὑ","́" },
 ["Ὗ"]={ "Ὑ","͂" },
 ["ὠ"]={ "ω","̓" },
 ["ὡ"]={ "ω","̔" },
 ["ὢ"]={ "ὠ","̀" },
 ["ὣ"]={ "ὡ","̀" },
 ["ὤ"]={ "ὠ","́" },
 ["ὥ"]={ "ὡ","́" },
 ["ὦ"]={ "ὠ","͂" },
 ["ὧ"]={ "ὡ","͂" },
 ["Ὠ"]={ "Ω","̓" },
 ["Ὡ"]={ "Ω","̔" },
 ["Ὢ"]={ "Ὠ","̀" },
 ["Ὣ"]={ "Ὡ","̀" },
 ["Ὤ"]={ "Ὠ","́" },
 ["Ὥ"]={ "Ὡ","́" },
 ["Ὦ"]={ "Ὠ","͂" },
 ["Ὧ"]={ "Ὡ","͂" },
 ["ὰ"]={ "α","̀" },
 ["ὲ"]={ "ε","̀" },
 ["ὴ"]={ "η","̀" },
 ["ὶ"]={ "ι","̀" },
 ["ὸ"]={ "ο","̀" },
 ["ὺ"]={ "υ","̀" },
 ["ὼ"]={ "ω","̀" },
 ["ᾀ"]={ "ἀ","ͅ" },
 ["ᾁ"]={ "ἁ","ͅ" },
 ["ᾂ"]={ "ἂ","ͅ" },
 ["ᾃ"]={ "ἃ","ͅ" },
 ["ᾄ"]={ "ἄ","ͅ" },
 ["ᾅ"]={ "ἅ","ͅ" },
 ["ᾆ"]={ "ἆ","ͅ" },
 ["ᾇ"]={ "ἇ","ͅ" },
 ["ᾈ"]={ "Ἀ","ͅ" },
 ["ᾉ"]={ "Ἁ","ͅ" },
 ["ᾊ"]={ "Ἂ","ͅ" },
 ["ᾋ"]={ "Ἃ","ͅ" },
 ["ᾌ"]={ "Ἄ","ͅ" },
 ["ᾍ"]={ "Ἅ","ͅ" },
 ["ᾎ"]={ "Ἆ","ͅ" },
 ["ᾏ"]={ "Ἇ","ͅ" },
 ["ᾐ"]={ "ἠ","ͅ" },
 ["ᾑ"]={ "ἡ","ͅ" },
 ["ᾒ"]={ "ἢ","ͅ" },
 ["ᾓ"]={ "ἣ","ͅ" },
 ["ᾔ"]={ "ἤ","ͅ" },
 ["ᾕ"]={ "ἥ","ͅ" },
 ["ᾖ"]={ "ἦ","ͅ" },
 ["ᾗ"]={ "ἧ","ͅ" },
 ["ᾘ"]={ "Ἠ","ͅ" },
 ["ᾙ"]={ "Ἡ","ͅ" },
 ["ᾚ"]={ "Ἢ","ͅ" },
 ["ᾛ"]={ "Ἣ","ͅ" },
 ["ᾜ"]={ "Ἤ","ͅ" },
 ["ᾝ"]={ "Ἥ","ͅ" },
 ["ᾞ"]={ "Ἦ","ͅ" },
 ["ᾟ"]={ "Ἧ","ͅ" },
 ["ᾠ"]={ "ὠ","ͅ" },
 ["ᾡ"]={ "ὡ","ͅ" },
 ["ᾢ"]={ "ὢ","ͅ" },
 ["ᾣ"]={ "ὣ","ͅ" },
 ["ᾤ"]={ "ὤ","ͅ" },
 ["ᾥ"]={ "ὥ","ͅ" },
 ["ᾦ"]={ "ὦ","ͅ" },
 ["ᾧ"]={ "ὧ","ͅ" },
 ["ᾨ"]={ "Ὠ","ͅ" },
 ["ᾩ"]={ "Ὡ","ͅ" },
 ["ᾪ"]={ "Ὢ","ͅ" },
 ["ᾫ"]={ "Ὣ","ͅ" },
 ["ᾬ"]={ "Ὤ","ͅ" },
 ["ᾭ"]={ "Ὥ","ͅ" },
 ["ᾮ"]={ "Ὦ","ͅ" },
 ["ᾯ"]={ "Ὧ","ͅ" },
 ["ᾰ"]={ "α","̆" },
 ["ᾱ"]={ "α","̄" },
 ["ᾲ"]={ "ὰ","ͅ" },
 ["ᾳ"]={ "α","ͅ" },
 ["ᾴ"]={ "ά","ͅ" },
 ["ᾶ"]={ "α","͂" },
 ["ᾷ"]={ "ᾶ","ͅ" },
 ["Ᾰ"]={ "Α","̆" },
 ["Ᾱ"]={ "Α","̄" },
 ["Ὰ"]={ "Α","̀" },
 ["ᾼ"]={ "Α","ͅ" },
 ["῁"]={ "¨","͂" },
 ["ῂ"]={ "ὴ","ͅ" },
 ["ῃ"]={ "η","ͅ" },
 ["ῄ"]={ "ή","ͅ" },
 ["ῆ"]={ "η","͂" },
 ["ῇ"]={ "ῆ","ͅ" },
 ["Ὲ"]={ "Ε","̀" },
 ["Ὴ"]={ "Η","̀" },
 ["ῌ"]={ "Η","ͅ" },
 ["῍"]={ "᾿","̀" },
 ["῎"]={ "᾿","́" },
 ["῏"]={ "᾿","͂" },
 ["ῐ"]={ "ι","̆" },
 ["ῑ"]={ "ι","̄" },
 ["ῒ"]={ "ϊ","̀" },
 ["ῖ"]={ "ι","͂" },
 ["ῗ"]={ "ϊ","͂" },
 ["Ῐ"]={ "Ι","̆" },
 ["Ῑ"]={ "Ι","̄" },
 ["Ὶ"]={ "Ι","̀" },
 ["῝"]={ "῾","̀" },
 ["῞"]={ "῾","́" },
 ["῟"]={ "῾","͂" },
 ["ῠ"]={ "υ","̆" },
 ["ῡ"]={ "υ","̄" },
 ["ῢ"]={ "ϋ","̀" },
 ["ῤ"]={ "ρ","̓" },
 ["ῥ"]={ "ρ","̔" },
 ["ῦ"]={ "υ","͂" },
 ["ῧ"]={ "ϋ","͂" },
 ["Ῠ"]={ "Υ","̆" },
 ["Ῡ"]={ "Υ","̄" },
 ["Ὺ"]={ "Υ","̀" },
 ["Ῥ"]={ "Ρ","̔" },
 ["῭"]={ "¨","̀" },
 ["ῲ"]={ "ὼ","ͅ" },
 ["ῳ"]={ "ω","ͅ" },
 ["ῴ"]={ "ώ","ͅ" },
 ["ῶ"]={ "ω","͂" },
 ["ῷ"]={ "ῶ","ͅ" },
 ["Ὸ"]={ "Ο","̀" },
 ["Ὼ"]={ "Ω","̀" },
 ["ῼ"]={ "Ω","ͅ" },
 ["↚"]={ "←","̸" },
 ["↛"]={ "→","̸" },
 ["↮"]={ "↔","̸" },
 ["⇍"]={ "⇐","̸" },
 ["⇎"]={ "⇔","̸" },
 ["⇏"]={ "⇒","̸" },
 ["∄"]={ "∃","̸" },
 ["∉"]={ "∈","̸" },
 ["∌"]={ "∋","̸" },
 ["∤"]={ "∣","̸" },
 ["∦"]={ "∥","̸" },
 ["≁"]={ "∼","̸" },
 ["≄"]={ "≃","̸" },
 ["≇"]={ "≅","̸" },
 ["≉"]={ "≈","̸" },
 ["≠"]={ "=","̸" },
 ["≢"]={ "≡","̸" },
 ["≭"]={ "≍","̸" },
 ["≮"]={ "<","̸" },
 ["≯"]={ ">","̸" },
 ["≰"]={ "≤","̸" },
 ["≱"]={ "≥","̸" },
 ["≴"]={ "≲","̸" },
 ["≵"]={ "≳","̸" },
 ["≸"]={ "≶","̸" },
 ["≹"]={ "≷","̸" },
 ["⊀"]={ "≺","̸" },
 ["⊁"]={ "≻","̸" },
 ["⊄"]={ "⊂","̸" },
 ["⊅"]={ "⊃","̸" },
 ["⊈"]={ "⊆","̸" },
 ["⊉"]={ "⊇","̸" },
 ["⊬"]={ "⊢","̸" },
 ["⊭"]={ "⊨","̸" },
 ["⊮"]={ "⊩","̸" },
 ["⊯"]={ "⊫","̸" },
 ["⋠"]={ "≼","̸" },
 ["⋡"]={ "≽","̸" },
 ["⋢"]={ "⊑","̸" },
 ["⋣"]={ "⊒","̸" },
 ["⋪"]={ "⊲","̸" },
 ["⋫"]={ "⊳","̸" },
 ["⋬"]={ "⊴","̸" },
 ["⋭"]={ "⊵","̸" },
 ["⫝̸"]={ "⫝","̸" },
 ["が"]={ "か","゙" },
 ["ぎ"]={ "き","゙" },
 ["ぐ"]={ "く","゙" },
 ["げ"]={ "け","゙" },
 ["ご"]={ "こ","゙" },
 ["ざ"]={ "さ","゙" },
 ["じ"]={ "し","゙" },
 ["ず"]={ "す","゙" },
 ["ぜ"]={ "せ","゙" },
 ["ぞ"]={ "そ","゙" },
 ["だ"]={ "た","゙" },
 ["ぢ"]={ "ち","゙" },
 ["づ"]={ "つ","゙" },
 ["で"]={ "て","゙" },
 ["ど"]={ "と","゙" },
 ["ば"]={ "は","゙" },
 ["ぱ"]={ "は","゚" },
 ["び"]={ "ひ","゙" },
 ["ぴ"]={ "ひ","゚" },
 ["ぶ"]={ "ふ","゙" },
 ["ぷ"]={ "ふ","゚" },
 ["べ"]={ "へ","゙" },
 ["ぺ"]={ "へ","゚" },
 ["ぼ"]={ "ほ","゙" },
 ["ぽ"]={ "ほ","゚" },
 ["ゔ"]={ "う","゙" },
 ["ゞ"]={ "ゝ","゙" },
 ["ガ"]={ "カ","゙" },
 ["ギ"]={ "キ","゙" },
 ["グ"]={ "ク","゙" },
 ["ゲ"]={ "ケ","゙" },
 ["ゴ"]={ "コ","゙" },
 ["ザ"]={ "サ","゙" },
 ["ジ"]={ "シ","゙" },
 ["ズ"]={ "ス","゙" },
 ["ゼ"]={ "セ","゙" },
 ["ゾ"]={ "ソ","゙" },
 ["ダ"]={ "タ","゙" },
 ["ヂ"]={ "チ","゙" },
 ["ヅ"]={ "ツ","゙" },
 ["デ"]={ "テ","゙" },
 ["ド"]={ "ト","゙" },
 ["バ"]={ "ハ","゙" },
 ["パ"]={ "ハ","゚" },
 ["ビ"]={ "ヒ","゙" },
 ["ピ"]={ "ヒ","゚" },
 ["ブ"]={ "フ","゙" },
 ["プ"]={ "フ","゚" },
 ["ベ"]={ "ヘ","゙" },
 ["ペ"]={ "ヘ","゚" },
 ["ボ"]={ "ホ","゙" },
 ["ポ"]={ "ホ","゚" },
 ["ヴ"]={ "ウ","゙" },
 ["ヷ"]={ "ワ","゙" },
 ["ヸ"]={ "ヰ","゙" },
 ["ヹ"]={ "ヱ","゙" },
 ["ヺ"]={ "ヲ","゙" },
 ["ヾ"]={ "ヽ","゙" },
 ["יִ"]={ "י","ִ" },
 ["ײַ"]={ "ײ","ַ" },
 ["שׁ"]={ "ש","ׁ" },
 ["שׂ"]={ "ש","ׂ" },
 ["שּׁ"]={ "שּ","ׁ" },
 ["שּׂ"]={ "שּ","ׂ" },
 ["אַ"]={ "א","ַ" },
 ["אָ"]={ "א","ָ" },
 ["אּ"]={ "א","ּ" },
 ["בּ"]={ "ב","ּ" },
 ["גּ"]={ "ג","ּ" },
 ["דּ"]={ "ד","ּ" },
 ["הּ"]={ "ה","ּ" },
 ["וּ"]={ "ו","ּ" },
 ["זּ"]={ "ז","ּ" },
 ["טּ"]={ "ט","ּ" },
 ["יּ"]={ "י","ּ" },
 ["ךּ"]={ "ך","ּ" },
 ["כּ"]={ "כ","ּ" },
 ["לּ"]={ "ל","ּ" },
 ["מּ"]={ "מ","ּ" },
 ["נּ"]={ "נ","ּ" },
 ["סּ"]={ "ס","ּ" },
 ["ףּ"]={ "ף","ּ" },
 ["פּ"]={ "פ","ּ" },
 ["צּ"]={ "צ","ּ" },
 ["קּ"]={ "ק","ּ" },
 ["רּ"]={ "ר","ּ" },
 ["שּ"]={ "ש","ּ" },
 ["תּ"]={ "ת","ּ" },
 ["וֹ"]={ "ו","ֹ" },
 ["בֿ"]={ "ב","ֿ" },
 ["כֿ"]={ "כ","ֿ" },
 ["פֿ"]={ "פ","ֿ" },
 ["𑂚"]={ "𑂙","𑂺" },
 ["𑂜"]={ "𑂛","𑂺" },
 ["𑂫"]={ "𑂥","𑂺" },
 ["𑄮"]={ "𑄱","𑄧" },
 ["𑄯"]={ "𑄲","𑄧" },
 ["𑍋"]={ "𑍇","𑌾" },
 ["𑍌"]={ "𑍇","𑍗" },
 ["𑒻"]={ "𑒹","𑒺" },
 ["𑒼"]={ "𑒹","𑒰" },
 ["𑒾"]={ "𑒹","𑒽" },
 ["𑖺"]={ "𑖸","𑖯" },
 ["𑖻"]={ "𑖹","𑖯" },
 ["𝅗𝅥"]={ "𝅗","𝅥" },
 ["𝅘𝅥"]={ "𝅘","𝅥" },
 ["𝅘𝅥𝅮"]={ "𝅘𝅥","𝅮" },
 ["𝅘𝅥𝅯"]={ "𝅘𝅥","𝅯" },
 ["𝅘𝅥𝅰"]={ "𝅘𝅥","𝅰" },
 ["𝅘𝅥𝅱"]={ "𝅘𝅥","𝅱" },
 ["𝅘𝅥𝅲"]={ "𝅘𝅥","𝅲" },
 ["𝆹𝅥"]={ "𝆹","𝅥" },
 ["𝆺𝅥"]={ "𝆺","𝅥" },
 ["𝆹𝅥𝅮"]={ "𝆹𝅥","𝅮" },
 ["𝆺𝅥𝅮"]={ "𝆺𝅥","𝅮" },
 ["𝆹𝅥𝅯"]={ "𝆹𝅥","𝅯" },
 ["𝆺𝅥𝅯"]={ "𝆺𝅥","𝅯" },
   },
  },
 },
 ["name"]="collapse",
 ["prepend"]=true,
 ["type"]="ligature",
}

end -- closure

do -- begin closure to overcome local limits and interference

if not modules then modules={} end modules ['luatex-fonts-gbn']={
 version=1.001,
 comment="companion to luatex-*.tex",
 author="Hans Hagen, PRAGMA-ADE, Hasselt NL",
 copyright="PRAGMA ADE / ConTeXt Development Team",
 license="see context related readme files"
}
if context then
--removed

end
local next=next
local fonts=fonts
local nodes=nodes
local nuts=nodes.nuts 
local traverse_id=nuts.traverse_id
local flush_node=nuts.flush_node
local glyph_code=nodes.nodecodes.glyph
local disc_code=nodes.nodecodes.disc
local tonode=nuts.tonode
local tonut=nuts.tonut
local getfont=nuts.getfont
local getchar=nuts.getchar
local getid=nuts.getid
local getboth=nuts.getboth
local getprev=nuts.getprev
local getnext=nuts.getnext
local getdisc=nuts.getdisc
local setchar=nuts.setchar
local setlink=nuts.setlink
local setprev=nuts.setprev
local n_ligaturing=node.ligaturing
local n_kerning=node.kerning
local d_ligaturing=nuts.ligaturing
local d_kerning=nuts.kerning
local basemodepass=true
local function l_warning() logs.report("fonts","don't call 'node.ligaturing' directly") l_warning=nil end
local function k_warning() logs.report("fonts","don't call 'node.kerning' directly") k_warning=nil end
function node.ligaturing(...)
 if basemodepass and l_warning then
  l_warning()
 end
 return n_ligaturing(...)
end
function node.kerning(...)
 if basemodepass and k_warning then
  k_warning()
 end
 return n_kerning(...)
end
function nuts.ligaturing(...)
 if basemodepass and l_warning then
  l_warning()
 end
 return d_ligaturing(...)
end
function nuts.kerning(...)
 if basemodepass and k_warning then
  k_warning()
 end
 return d_kerning(...)
end
function nodes.handlers.setbasemodepass(v)
 basemodepass=v
end
local function nodepass(head,groupcode,size,packtype,direction)
 local fontdata=fonts.hashes.identifiers
 if fontdata then
  local usedfonts={}
  local basefonts={}
  local prevfont=nil
  local basefont=nil
  local variants=nil
  local redundant=nil
  local nofused=0
  for n in traverse_id(glyph_code,head) do
   local font=getfont(n)
   if font~=prevfont then
    if basefont then
     basefont[2]=getprev(n)
    end
    prevfont=font
    local used=usedfonts[font]
    if not used then
     local tfmdata=fontdata[font] 
     if tfmdata then
      local shared=tfmdata.shared 
      if shared then
       local processors=shared.processes
       if processors and #processors>0 then
        usedfonts[font]=processors
        nofused=nofused+1
       elseif basemodepass then
        basefont={ n,nil }
        basefonts[#basefonts+1]=basefont
       end
      end
      local resources=tfmdata.resources
      variants=resources and resources.variants
      variants=variants and next(variants) and variants or false
     end
    else
     local tfmdata=fontdata[prevfont]
     if tfmdata then
      local resources=tfmdata.resources
      variants=resources and resources.variants
      variants=variants and next(variants) and variants or false
     end
    end
   end
   if variants then
    local char=getchar(n)
    if (char>=0xFE00 and char<=0xFE0F) or (char>=0xE0100 and char<=0xE01EF) then
     local hash=variants[char]
     if hash then
      local p=getprev(n)
      if p and getid(p)==glyph_code then
       local variant=hash[getchar(p)]
       if variant then
        setchar(p,variant)
       end
      end
     end
     if not redundant then
      redundant={ n }
     else
      redundant[#redundant+1]=n
     end
    end
   end
  end
  local nofbasefonts=#basefonts
  if redundant then
   for i=1,#redundant do
    local r=redundant[i]
    local p,n=getboth(r)
    if r==head then
     head=n
     setprev(n)
    else
     setlink(p,n)
    end
    if nofbasefonts>0 then
     for i=1,nofbasefonts do
      local bi=basefonts[i]
      if r==bi[1] then
       bi[1]=n
      end
      if r==bi[2] then
       bi[2]=n
      end
     end
    end
    flush_node(r)
   end
  end
  for d in traverse_id(disc_code,head) do
   local _,_,r=getdisc(d)
   if r then
    for n in traverse_id(glyph_code,r) do
     local font=getfont(n)
     if font~=prevfont then
      prevfont=font
      local used=usedfonts[font]
      if not used then
       local tfmdata=fontdata[font] 
       if tfmdata then
        local shared=tfmdata.shared 
        if shared then
         local processors=shared.processes
         if processors and #processors>0 then
          usedfonts[font]=processors
          nofused=nofused+1
         end
        end
       end
      end
     end
    end
   end
  end
  if next(usedfonts) then
   for font,processors in next,usedfonts do
    for i=1,#processors do
     head=processors[i](head,font,0,direction,nofused) or head
    end
   end
  end
  if basemodepass and nofbasefonts>0 then
   for i=1,nofbasefonts do
    local range=basefonts[i]
    local start=range[1]
    local stop=range[2]
    if start then
     local front=head==start
     local prev,next
     if stop then
      next=getnext(stop)
      start,stop=d_ligaturing(start,stop)
      start,stop=d_kerning(start,stop)
     else
      prev=getprev(start)
      start=d_ligaturing(start)
      start=d_kerning(start)
     end
     if prev then
      setlink(prev,start)
     end
     if next then
      setlink(stop,next)
     end
     if front and head~=start then
      head=start
     end
    end
   end
  end
 end
 return head
end
local function basepass(head)
 if basemodepass then
  head=d_ligaturing(head)
  head=d_kerning(head)
 end
 return head
end
local protectpass=node.direct.protect_glyphs
local injectpass=nodes.injections.handler
function nodes.handlers.nodepass(head,...)
 if head then
  return tonode(nodepass(tonut(head),...))
 end
end
function nodes.handlers.basepass(head)
 if head then
  return tonode(basepass(tonut(head)))
 end
end
function nodes.handlers.injectpass(head)
 if head then
  return tonode(injectpass(tonut(head)))
 end
end
function nodes.handlers.protectpass(head)
 if head then
  protectpass(tonut(head))
  return head
 end
end
function nodes.simple_font_handler(head,groupcode,size,packtype,direction)
 if head then
  head=tonut(head)
  head=nodepass(head,groupcode,size,packtype,direction)
  head=injectpass(head)
  if not basemodepass then
   head=basepass(head)
  end
  protectpass(head)
  head=tonode(head)
 end
 return head
end

end -- closure
