> > retitle -1 sed: character classes don't include locale-specific characters > Bug#388728: tr: character classes don't include locale-specific characters > Changed Bug title.
echo Bübü Übü | LC_CTYPE=en_US.UTF-8 sed 's/[[:upper:]]/X/g' Xübü Xbü echo Bübü Übü | LC_CTYPE=en_US.UTF-8 sed 's/[[:lower:]]/X/g' BXXX ÜXX Please retitle and clarify.
