emerge -p can write LINGUAS="-gd%", supposedly caused by useflag settings for "gd" flag. Reproducible: Always Steps to Reproduce: 1. emerge -p =www-client/opera-11.11.2109 2. seek for www-client/opera line 3. observe LINGUAS="-gd%" Don't know if it is only a display artifact or a real names clash. And whether opera.ebuild or portage is responsible for it.
gd is Scottish Gaelic. % tells you that it was added or removed. Next time you file a bug, attach emerge --info as requested please.