[luatex] using fea files in plain TeX

Khaled Hosny khaledhosny at eglug.org
Sun Jul 12 21:01:07 CEST 2009


Thanks for the details,
I reported that to luatex tracker to make sure it won't be missed out:
http://tracker.luatex.org/view.php?id=249

Regards,
 Khaled

On Sat, Jul 11, 2009 at 11:33:00AM +0900, Dohyun Kim wrote:
> 2009/7/11 Khaled Hosny <khaledhosny at eglug.org>:
> >
> > I'd like to know about other issue (probably with fixes), and we can fix
> > them for luaotfload until Hans releases another beta.
> >
> 
> 1.
> This simple tex code fails to compile:
> 
> \input luatex-fonts
> \font\tenrm=ec-lmr10
> \tenrm
> \bye
> 
> so I have added following code, which of course
> was copied from context's lua code.
> 
> fonts.enc.known = fonts.enc.known or
> {
>     texnansi = true,
>     ec       = true,
>     qx       = true,
>     t5       = true,
>     t2a      = true,
>     t2b      = true,
>     t2c      = true,
>     unicode  = true
> }
> 
> 2.
> This tex file fails as well:
> 
> \documentclass{article}
> \input luatex-fonts
> \DeclareFontEncoding{EU1}{}{}
> \DeclareErrorFont{EU1}{lmr}{m}{n}{10}
> \DeclareFontSubstitution{EU1}{lmr}{m}{n}
> \def\encodingdefault{EU1}
> \def\rmdefault{lmr}
> \def\sfdefault{lmss}
> \def\ttdefault{lmtt}
> \begin{document}
> \ttfamily\bfseries
> \end{document}
> 
> 3.
> I could not get visible spaces (U+2423) in verbatim environment.
> 
> \documentclass{article}
> \input luatex-fonts
> \DeclareFontEncoding{EU1}{}{}
> \DeclareErrorFont{EU1}{lmr}{m}{n}{10}
> \DeclareFontSubstitution{EU1}{lmr}{m}{n}
> \def\encodingdefault{EU1}
> \def\rmdefault{lmr}
> \def\sfdefault{lmss}
> \def\ttdefault{lmtt}
> \begin{document}
> \verb*|a b|
> \end{document}
> 
> 
> To deal with second and third issues,
> I modified "define_font" callback.register function
> similarly to the following:
> 
> callback.register('define_font',function(name,size,id)
>     local fontdata = fonts.define.read(name,size,id) -- by hans
>     if type(fontdata) == "table" then
>         fontdata.name = name -- ttfamily/bfseries
>         if fontdata.shared -- visible space
>             and fontdata.shared.otfdata
>             and fontdata.shared.otfdata.metadata
>             and fontdata.shared.otfdata.metadata.isfixedpitch then
>             if fontdata.characters[0x2423] then
>                 fontdata.characters[0x20] = fontdata.characters[0x2423]
>             end
>         end
>     end
>     return fontdata
> end)
> 
> 
> The additions and modifications shown in this thread
> are just temporary measures.
> Certainly, true and correct patches to these issues
> should come from Hans, as he alone fully understands
> the codes of luatex-plain.
> 
> Regards,
> Dohyun Kim

-- 
 Khaled Hosny
 Arabic localiser and member of Arabeyes.org team
 Free font developer
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