other locale variables) may affect other programs as well, not just
Perl. In particular, external programs run from within Perl will see
these changes. If you make the new settings permanent (read on), all
-programs you run see the changes. See L<ENVIRONMENT> for for
+programs you run see the changes. See L<ENVIRONMENT> for
the full list of relevant environment variables and L<USING LOCALES>
for their effects in Perl. Effects in other programs are
easily deducible. For example, the variable LC_COLLATE may well affect
a A b B c C d D e E
a b c d e A B C D E
-Here is a code snippet to tell what alphanumeric
+Here is a code snippet to tell what "word"
characters are in the current locale, in that locale's order:
use locale;
In the scope of S<C<use locale>>, Perl obeys the C<LC_CTYPE> locale
setting. This controls the application's notion of which characters are
alphabetic. This affects Perl's C<\w> regular expression metanotation,
-which stands for alphanumeric characters--that is, alphabetic and
-numeric characters. (Consult L<perlre> for more information about
+which stands for alphanumeric characters--that is, alphabetic,
+numeric, and including other special characters such as the underscore or
+hyphen. (Consult L<perlre> for more information about
regular expressions.) Thanks to C<LC_CTYPE>, depending on your locale
setting, characters like 'E<aelig>', 'E<eth>', 'E<szlig>', and
'E<oslash>' may be understood as C<\w> characters.
=head1 SEE ALSO
-L<POSIX (3)/isalnum>
-
-L<POSIX (3)/isalpha>
-
-L<POSIX (3)/isdigit>
-
-L<POSIX (3)/isgraph>
-
-L<POSIX (3)/islower>
-
-L<POSIX (3)/isprint>,
-
-L<POSIX (3)/ispunct>
-
-L<POSIX (3)/isspace>
-
-L<POSIX (3)/isupper>,
-
-L<POSIX (3)/isxdigit>
-
-L<POSIX (3)/localeconv>
-
-L<POSIX (3)/setlocale>,
-
-L<POSIX (3)/strcoll>
-
-L<POSIX (3)/strftime>
-
-L<POSIX (3)/strtod>,
-
-L<POSIX (3)/strxfrm>
+L<POSIX (3)/isalnum>, L<POSIX (3)/isalpha>, L<POSIX (3)/isdigit>,
+L<POSIX (3)/isgraph>, L<POSIX (3)/islower>, L<POSIX (3)/isprint>,
+L<POSIX (3)/ispunct>, L<POSIX (3)/isspace>, L<POSIX (3)/isupper>,
+L<POSIX (3)/isxdigit>, L<POSIX (3)/localeconv>, L<POSIX (3)/setlocale>,
+L<POSIX (3)/strcoll>, L<POSIX (3)/strftime>, L<POSIX (3)/strtod>,
+L<POSIX (3)/strxfrm>.
=head1 HISTORY