On Fri, Feb 28, 2020 at 04:10:54PM -0500, Ted Baker wrote: > So C.UTF-8 in itself does not count as a valid locale, and I have to add > something like en_US.UTF-8? This is debian-user, so the answer is "it's valid in Debian". You can tell because it shows up in the output of "locale -a". For a more detailed answer, see <https://sourceware.org/bugzilla/show_bug.cgi?id=17318>.