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Karl Berry <[log in to unmask]> writes:

>     little reason to continue even with XeTeX. 
>
> Just for the record, even in the hypothetical future where LuaTeX has
> caught up to XeTeX in terms of system font access and Arabic
> typesetting, Jonathan K once spoke to me about another reason why
> XeTeX will very likely always have a place: good typesetting of other
> minority scripts.  Since everything in LuaTeX is being programmed from
> scratch, it seems highly unlikely it will ever support the variety of
> scripts that ICU et al. do.

It would seem to suggest itself to me that one part of dropping XeTeX as
a separate project would entail module loader and interfaces into ICU.
Ideally, one would have built-in support for the more important LuaTeX
targets, with seamless ICU fallbacks for the rest.

-- 
David Kastrup