[lltx] luaotfload maintenance

[Ulrike Fischer]

Am Sat, 16 Jun 2012 02:56:14 +0200 schrieb Reinhard Kotucha:

>  > > My *wish* would be (at least) one independant/self contained font
>  > > loader which can (and at best is) be used with all formats. 
>  > 
>  > a basic font loader that understands all formats (type1, otf, ttf)
>  > is rather easy to implement. But that would only handle l-t-r texts
>  > without complex substitution.
> 
> Well, the expression "can be used with all formats" can also mean that
> macros are written in plain TeX and can be used with LaTeX and ConTeXt
> too.

With "font loader" I meant the lua-code. All the code needed for the
function used at the end in the font callback and code need to
generate the font caches. And I didn't mean some simple fallback.

I want that all formats which use this code in the font callback
have at the end an extended, powerfull \font-command with clear
syntax and known features. 

The \font-command is imho such a basic need that from the view point
of a normal user and package writer it should act like a primitive
command, similar to the extended \font-command in xelatex (which
lacks some needed capabilities). And I think that luatex will be not
be able to replace pdftex if such a generic font loader module is
not created and will end as "the context engine". 

How formats include the lua-code in the font callback and what they
wrap around it can be different. 

-- 
Ulrike Fischer