1locale(3pm) Perl Programmers Reference Guide locale(3pm)
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6 locale - Perl pragma to use or avoid POSIX locales for built-in
7 operations
8
10 DO NOT USE this pragma in scripts that have multiple threads active.
11 The locale is not local to a single thread. Another thread may change
12 the locale at any time, which could cause at a minimum that a given
13 thread is operating in a locale it isn't expecting to be in. On some
14 platforms, segfaults can also occur. The locale change need not be
15 explicit; some operations cause perl to change the locale itself. You
16 are vulnerable simply by having done a "use locale".
17
19 @x = sort @y; # Native-platform/Unicode code point sort order
20 {
21 use locale;
22 @x = sort @y; # Locale-defined sort order
23 }
24 @x = sort @y; # Native-platform/Unicode code point sort order
25 # again
26
28 This pragma tells the compiler to enable (or disable) the use of POSIX
29 locales for built-in operations (for example, LC_CTYPE for regular
30 expressions, LC_COLLATE for string comparison, and LC_NUMERIC for
31 number formatting). Each "use locale" or "no locale" affects
32 statements to the end of the enclosing BLOCK.
33 See perllocale for more detailed information on how Perl supports
35 locales.
36 On systems that don't have locales, this pragma will cause your
38 operations to behave as if in the "C" locale; attempts to change the
39 locale will fail.
40perl v5.30.2 2020-03-27 locale(3pm)