One thing that is relevant if you’re planning on distributing 21.4.19 on
Windows; in redisplay-msw.c there are two assertions that check that the
dimension of a textual run is 1, at lines 195 and 563. This is appropriate
because 21.4 doesn’t have the Unicode support necessary to display anything
but ISO 8859-1 on Windows, and the assertion failure underlines that.
However, it might be preferable for you and your users to comment those
assertions out--it doesn’t fix the problem, but it does prevent a crash when
XEmacs tries to display Han characters.
Santa Maradona, priez pour moi!