Le 18/07/2015 12:26, Stephan Hennig a écrit :
> Say I write a pure Lua package replacing
> all A glyphs by Z in whatever callback.  How do I hook into that
> callback in a format independent way?  A luatexbase package that
> abstracts from minimal format implementations (as far as such are needed
> in a format) would solve that issue.

This seems highly theoretical to me... If you want a package developped
in a format-independant way, I guess you mean Plain, LaTeX, ConTeXt, and
home-made formats. But luatexbase is not ported to ConTeXt and as far as
I know, there is no callback management in ConTeXt, you can't hook into
a callback without breaking everything... So format-independant packages
are already technically impossible and I fail to really understand your
point... can you give a more precise example of a possible problem?

Also, luatexbase has not moved for a couple of years, and there's no one
to maintain or develop it, so I think what's currently happening is
quite a good thing.

Thank you,
-- 
Elie