Adding tests for non-C locales

[Assaf Gordon]

Hello,

I want to add tests for non-C locales (to check grouping in numfmt).

My test script is written in Perl, based on "tests/misc/wc.pl" .

It starts with:
===
   @ENV{qw(LANGUAGE LANG LC_ALL)} = ('C') x 3;
===

Which is fine for most of the tests.

How do I add tests for non-C locale, in a safe manner (I need a locale that I 
know which thousand-group separator character is used, but I can't know in 
advanced if it's installed on the testing machine).

Thanks,
 -gordon