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locale(3)              Perl Programmers Reference Guide              locale(3)

       locale - Perl pragma to use and avoid POSIX locales for built-in operations

           @x = sort @y;       # ASCII sorting order
               use locale;
               @x = sort @y;   # Locale-defined sorting order
           @x = sort @y;       # ASCII sorting order again

       This pragma tells the compiler to enable (or disable) the use of POSIX locales for built-in operations
       (LC_CTYPE for regular expressions, and LC_COLLATE for string comparison).  Each "use locale" or "no locale"
       affects statements to the end of the enclosing BLOCK.

       See perllocale for more detailed information on how Perl supports locales.

perl v5.8.8                       2001-09-21                         locale(3)