bug#57531: 28.1; Character encoding missing for "eo"

[Eli Zaretskii]

> Date: Thu, 06 Oct 2022 11:28:59 +0000
> From: Gregory Heytings <gregory@heytings.org>
> cc: Eli Zaretskii <eliz@gnu.org>, jonathan@jonreeve.com, 
> 57531@debbugs.gnu.org, 
>     schwab@linux-m68k.org
> 
> Actually that problem has been debugged: it's a NixOS bug.  NixOS rejects 
> the locale to "eo.UTF-8" in its configuration files, even though 
> "eo.UTF-8" is a perfectly valid locale.  It rejects it because the 
> "eo.UTF-8" string is not present in some text file (apparently the 
> "localedata/SUPPORTED" file from glibc).
> 
> >
> > Yes, that would be helpful.  On this Ubuntu system, I just uncommented 
> > the "eo" line in locale.gen and ran locale-gen, and that made both the 
> > "eo" and "eo.UTF-8" locales available.
> >
> 
> Another similar example is the en_IL (English Israel) locale.  X11's 
> locale.alias indicates that "en_IL" alone means "en_IL.ISO8859-1", yet 
> glibc provides only one encoding for "en_IL", namely "UTF-8".
> 
> To avoid such bugs, the most reasonable thing to do for users is to always 
> specify the encoding.

Should we perhaps have an entry in PROBLEMS with that information?