Illumos, FreeBSD, and DragonFlyBSD recently cooperated to make their locale support better.
Here's the FreeBSD commit: https://lists.freebsd.org/pipermail/svn-src-head/2015-November/078554.html Here's a blog post by the FreeBSD committer, bapt, about the changes: http://blog.etoilebsd.net/post/This_is_how_I_like_opensource I'd be happy if someone could take a look at and integrate it into NetBSD too, if useful :) Thanks, Thomas