Check what locale settings are installed/available to you in the working environment (perllocale suggests a number of ways to do that)

I tried `locale -a' on Linux, and found out that it doesn't have 'lt', but it does have lt_LT, which should be the same. (It also has 'lithuanian' ... Is it a standard in Unix or some GNU extension?)

Anyway, i tried running this:

use strict;
use warnings;

use locale;
use POSIX;
my $loc = setlocale(LC_ALL, 'lt');

if (defined $loc) {
    print "loc is defined\n";
    print "loc value: *$loc*\n";
}
else {
    print "loc is undefined\n";
}

my @sorttest = qw(ia ib ic ya yb yc);
for (sort @sorttest) {
    print "$_\n";
}
[download]

When i try 'lt_LT', $loc is 'lt_LT'. When i try 'lt', $loc is undefined, so i must be in the right direction.

However, the sorting still doesn't work as i would expect Can it really be a bug in Linux?

Also, perllocale suggests only Unix'ish ways to list available locales. Is there anything like `locale -a' on Windows? I'm trying to be portable.