[luatex] multiple callbacks

[Elie Roux]

Hans Hagen a écrit :
> since there are multiple (conceptually different) solutions there will 
> be no 'integrated solution' (we would end up with 
> callback-variant-1.tex, callbacks-variant-2.tex etc).

I don't really understand why... if you say now "we have an integrated 
solution, here it is, now use callback.add instead of callback.register 
with this file", what's the problem?

> what you can best do is to make a style file (say that you target at 
> latex) that then can be loaded first and it's functionality becomes 
> available to other styles
>
> a comparable situation happened with pdftex: in order to let latex 
> work well with pdftex, at some point hyperef showed up which had all 
> the functionality needed; for xetex somethign similar is the case; i 
> think that heiko made some code for latex already (dealing with 
> colors) so callback handlers (in latex) should cooperate well with 
> that too
>
> so, what you can best do is make something similar for latex, and its 
> natural place would then be under tex/latex/luatex or so; as long as 
> names of such styles are not conflicting it's ok; then, when someone 
> else makes a style, you can try to convince the author to build upon 
> the same mechanisms

Again there is something I don't understand... isn't it only a Lua 
problem? There are certainly issues I don't see here...
-- 
Elie