While I was switching from
rbenv I removed the system Ruby as part of it and, for a few moments had a
vim refusing duty since it relied on the ruby
.so library which wasn't there anymore and I wanted to write something without too much effort as root:
sudo su -c 'cat <<eof > /etc/locale.conf LANG=en_US.UTF-8 LC_COLLATE=C eof'
Did just the trick. It has the convenience of heredocs, so its a nice editing experience in bash as well (of course my zle is superior, but that's another story ;)