Hrvoje Niksic <hniksic(a)srce.hr> writes in xemacs-beta(a)xemacs.org:
I've never really grokked the concept of "multicolumn
characters". We
already support proportional fonts. Shouldn't Japanese be treated the
same as anything else?
It's not the same thing. Under normal settings, Japanese characters
display twice as wide as Latin characters. This means that using a
computation like (- (point) (point-at-bol)) to determine indentation
is broken.