[XeTeX] not enough \XeTeXcharclass registers

Philip Taylor P.Taylor at Rhul.Ac.Uk
Sun Jan 31 19:31:49 CET 2016

Just as TeX has \maxdimen, it would be useful if derivatives of TeX such
as XeTeX could add analogous environmental enquiries such as
\maxXeTeXcharclass (or, less uglily but also less meaningfully,

Philip Taylor
Jonathan Kew wrote:

> If/when the change happens officially, there'll be a new \XeTeXrevision
> value, I guess. So macros could check that.

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