locale - Perl pragma to use or avoid POSIX locales for built-in operations
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.
use locale
my @x1 = sort @y; # Native-platform/Unicode code point sort order { use locale; my @x2 = sort @y; # Locale-defined sort order } my @x3 = sort @y; # Native-platform/Unicode code point sort order # again
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.
LC_CTYPE
LC_COLLATE
LC_NUMERIC
no locale
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.
C
To install utf8, copy and paste the appropriate command in to your terminal.
cpanm
cpanm utf8
CPAN shell
perl -MCPAN -e shell install utf8
For more information on module installation, please visit the detailed CPAN module installation guide.