locale(3pm) Perl Programmers Reference Guide locale(3pm)
NAME
locale - Perl pragma to use or avoid POSIX locales for built-in
operations
WARNING
DO NOT USE this pragma in scripts that have multiple threads active.
The locale is not local to a single thread. Another thread may change
the locale at any time, which could cause at a minimum that a given
thread is operating in a locale it isn't expecting to be in. On some
platforms, segfaults can also occur. The locale change need not be
explicit; some operations cause perl to change the locale itself. You
are vulnerable simply by having done a "use locale".
SYNOPSIS
@x = sort @y; # Native-platform/Unicode code point sort order
{
use locale;
@x = sort @y; # Locale-defined sort order
}
@x = sort @y; # Native-platform/Unicode code point sort order
# again
DESCRIPTION
This pragma tells the compiler to enable (or disable) the use of POSIX
locales for built-in operations (for example, LC_CTYPE for regular
expressions, LC_COLLATE for string comparison, and LC_NUMERIC for
number formatting). 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.
On systems that don't have locales, this pragma will cause your
operations to behave as if in the "C" locale; attempts to change the
locale will fail.
perl v5.24.0 2016-04-10 locale(3pm)
perl 5.24 - Generated Tue Nov 15 18:43:10 CST 2016