bug#49808: 27.1; ediff assumes user's language is English

[Eli Zaretskii]

> From: Andreas Schwab <schwab@linux-m68k.org>
> Cc: Matthieu Dubuget <matthieu.dubuget@gmail.com>,  49808@debbugs.gnu.org
> Date: Mon, 02 Aug 2021 09:28:44 +0200
> 
> >> See https://stackoverflow.com/q/9242651/3407924
> >> and this post for a clear explanation of the problem:
> >> https://stackoverflow.com/a/9244759/3407924
> >
> > The "usual" solution is to insert "LANG=C" into the envirnment before
> > running the Diff program.
> 
> I don't think it is necessary to match on the text of that line, the
> "\\" prefix should be enough.

If that works (i.e. there are no other messages from Diff starting
with a backslash at end of output), it's a better solution, sure.

Thanks.