NAME

       Perl::Critic::Policy::RegularExpressions::ProhibitEnumeratedClasses - Use named character
       classes instead of explicit character lists.

AFFILIATION

       This Policy is part of the core Perl::Critic distribution.

DESCRIPTION

       This policy is not for everyone!  If you are working in pure ASCII, then disable it now or
       you may see some false violations.

       On the other hand many of us are working in a multilingual world with an extended
       character set, probably Unicode.  In that world, patterns like "m/[A-Z]/" can be a source
       of bugs when you really meant "m/\p{IsUpper}/".  This policy catches a selection of
       possible incorrect character class usage.

       Specifically, the patterns are:

       "[\t\r\n\f\ ]" vs. "\s"

       "[\t\r\n\ ]" vs. "\s"   (because many people forget "\f")

       "[A-Za-z0-9_]" vs. "\w"

       "[A-Za-z]" vs. "\p{IsAlphabetic}"

       "[A-Z]" vs. "\p{IsUpper}"

       "[a-z]" vs. "\p{IsLower}"

       "[0-9]" vs. "\d"

       "[^\w]" vs. "\W"

       "[^\s]" vs. "\S"

CONFIGURATION

       This Policy is not configurable except for the standard options.

CREDITS

       Initial development of this policy was supported by a grant from the Perl Foundation.

AUTHOR

       Chris Dolan <cdolan@cpan.org>

COPYRIGHT

       Copyright (c) 2007-2021 Chris Dolan.  Many rights reserved.

       This program is free software; you can redistribute it and/or modify it under the same
       terms as Perl itself.  The full text of this license can be found in the LICENSE file
       included with this module

perl v5.36.0             Perl::Critic::Policy::RegularExpressions::ProhibitEnumeratedClasses(3pm)