On 2017-04-15, Bruno Le Floch <blfla...@gmail.com> wrote: > The primitive conditional "\ifcat\relax\cr true\else false\fi" gives > "true" in pdfTeX, LuaTeX, (e)(u)pTeX, and XeTeX from some time ago > (could be years), but "false" in XeTeX 0.99996
Definitely a bug. The TeXbook defines the behaviour of \if and \ifcat, and all control sequences are considered to have character code 256 and category code 16, unless \let equal to a non-active character, in which case they have the value of that character. -------------------------------------------------- Subscriptions, Archive, and List information, etc.: http://tug.org/mailman/listinfo/xetex
