http://qs321.pair.com?node_id=1143

lib:locale

See the current Perl documentation for lib:locale.

Here is our local, out-dated (pre-5.6) version:

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.

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