[lltx] luaotfload maintenance

[Patrick Gundlach]

> As an example: I'm interested in "virtual lua fonts", that means
> some lua-code which describes a font build by getting (and
> reordering) glyphs from other real fonts and which can be loaded
> like a real font with the \font command. At some time it could be
> done in context (and so also with luaotfload when it was in sync)
> but you had to use undocumented internal functions with not garanty
> that they didn't change the next day and there wasn't a sane way to
> set up the search pathes for such fonts. It is no fun to develop
> only such ad-hoc solutions. 

would having a new font format ending with ".luafont" (or something similar) and a defined API help? Or what would your preferred interface be like?

Patrick