I18N::Collate(3)

NNAAMMEE
       I18N::Collate - compare 8-bit scalar data according to the
       current locale

         ***

         WARNING: starting from the Perl version 5.003_06
         the I18N::Collate interface for comparing 8-bit scalar data
         according to the current locale
               HAS BEEN DEPRECATED

         That is, please do not use it anymore for any new applications
         and please migrate the old applications away from it because its
         functionality was integrated into the Perl core language in the
         release 5.003_06.

         See the perllocale manual page for further information.

         ***

SSYYNNOOPPSSIISS
           use I18N::Collate;
           setlocale(LC_COLLATE, 'locale-of-your-choice');
           $s1 = new I18N::Collate "scalar_data_1";
           $s2 = new I18N::Collate "scalar_data_2";

DDEESSCCRRIIPPTTIIOONN
       This module provides you with objects that will collate
       according to your national character set, provided that
       the POSIX setlocale() function is supported on your
       system.

       You can compare $s1 and $s2 above with

           $s1 le $s2

       to extract the data itself, you'll need a dereference:
       $$s1

       This module uses POSIX::setlocale(). The basic collation
       conversion is done by strxfrm() which terminates at NUL
       characters being a decent C routine.  collate_xfrm()
       handles embedded NUL characters gracefully.

       The available locales depend on your operating system; try
       whether locale -a shows them or man pages for "locale" or
       "nlsinfo" or the direct approach ls /usr/lib/nls/loc or ls
       /usr/lib/nls or ls /usr/lib/locale.  Not all the locales
       that your vendor supports are necessarily installed:
       please consult your operating system's documentation and
       possibly your local system administration.  The locale

       names are probably something like xx_XX.(ISO)?8859-N or
       xx_XX.(ISO)?8859N, for example fr_CH.ISO8859-1 is the
       Swiss (CH) variant of French (fr), ISO Latin (8859) 1 (-1)
       which is the Western European character set.