One more little thing:
When I typeset a document with a glyph that is missing in the selected
font, the XeLaTeX logfile contains a nice warning:
Missing character: There is no ✓ in font Gentium
Basic/ICU:script=latn;langua
ge=DFLT;!
When I do the same with LuaLaTeX, I get the rather cryptic message:
luaotfload | otf process: missing cache for lookup cs_l_0_s of type
gsub_contex
t in font 21 (Gentium Basic)
It would be nice to phrase this message in a way that is understandable
for the common LaTeX user :)
(In addition, I ask myself if this shouldn't be written to the standard
output, rather than just to the log file. After all, missing characters
change the content of the file and are thus "worse" than mere layout
problems like, say, overfull and underfull boxes.)
What do you think?
