[luatex] information about ligatures

[Stephan Hennig]

Am 05.01.2014 16:40, schrieb Paul Isambert:
> Stephan Hennig <mailing_list at arcor.de> a écrit:
>> 
>> Can somebody please provide TeX input that results in a glyph node with
>> bit 1 of subtype set?
> 
> My two cents is that you’re using luaotfload and that luaotfload sets
> “subtype” to 256 for some reason; you’ll see ligatures with proper
> subtype 2 if you let TeX do its job with fonts (so use TFM, obviously).
> E.g. this in plain TeX:
> 
>     \setbox0=\hbox{fi}
>     \directlua{%
>       texio.write_nl("This ligature has subtype " .. tex.box[0].head.subtype)
>     }
>     \bye
> 
> It should print “This ligature has subtype 2”.

Thanks!  Yes, current target is LuaLaTeX with luaotfload.  But
preferably it should also work with TFM fonts.

Best regards,
Stephan Hennig