[XeTeX] The future of XeTeX

[Martin Schröder]

2012/7/30 Philip TAYLOR <P.Taylor at rhul.ac.uk>:
> I have held back from experimenting with LuaTeX because I have
> been led to believe, from this list and elsewhere, that LuaTeX
> and XeTeX are not in 1:1 correspondence in terms of the syntax
> and semantics of some non-Lua-related features.

You are right.

Do a 'texdoc xetex' and 'texdoc luatex' and compare. :-)

E.g. polyglossia does not work with LuaTeX (yet).

> converse perspective, would you be able to assure me and others
> that all extant XeTeX code will execute in LuaTeX without error
> and produce a PDF that is visually indistinguishable from the
> PDF that XeTeX would produce using the same source ?

No.

Best
   Martin