XFree86 4 iso10646-1 fonts.

diff --git a/etc/PROBLEMS b/etc/PROBLEMS
index c01ddf4f6a6f7f39a6795ba576d9c40cb34be29e..492bb05dfccc77b9a7542f760bb52c414b8a0f62 100644 (file)
--- a/etc/PROBLEMS
+++ b/etc/PROBLEMS
@@ -2,6 +2,21 @@ This file describes various problems that have been encountered
 in compiling, installing and running GNU Emacs.
 
 
+* Characters from the mule-unicode charsets aren't displayed under X.
+
+XFree86 4 contains many fonts in iso10646-1 encoding which have
+minimal character repertoires (whereas the encoding is meant to be a
+reasonable indication of the repertoire).  Emacs may choose one of
+these to display characters from the mule-unicode charsets and then
+typically won't be able to find the glyphs to display many characters.
+(Check with C-u C-x = .)  To avoid this, you may need to use a fontset
+which sets the font for the mule-unicode sets explicitly.  E.g. to use
+GNU unifont, include in the fontset spec:
+
+mule-unicode-2500-33ff:-gnu-unifont-*-iso10646-1,\
+mule-unicode-e000-ffff:-gnu-unifont-*-iso10646-1,\
+mule-unicode-0100-24ff:-gnu-unifont-*-iso10646-1
+
 * Problems with file dialogs in Emacs built with Open Motif.
 
 When Emacs 21 is built with Open Motif 2.1, it can happen that the