Perl::Critic::Policy::RegularExpressions::RequireLineBoundaryMatching(3)
NAME
Perl::Critic::Policy::RegularExpressions::RequireLineBoundaryMatching -
Always use the "/m" modifier with regular expressions.
AFFILIATION
This Policy is part of the core Perl::Critic distribution.
DESCRIPTION
Folks coming from a "sed" or "awk" background tend to assume that '$'
and '^' match the beginning and end of the line, rather than then
beginning and end of the string. Adding the '/m' flag to your regex
makes it behave as most people expect it should.
my $match = m{ ^ $pattern $ }x; #not ok
my $match = m{ ^ $pattern $ }xm; #ok
CONFIGURATION
This Policy is not configurable except for the standard options.
NOTES
For common regular expressions like e-mail addresses, phone numbers,
dates, etc., have a look at the Regexp::Common module. Also, be
cautions about slapping modifier flags onto existing regular
expressions, as they can drastically alter their meaning. See
<http://www.perlmonks.org/?node_id=484238> for an interesting
discussion on the effects of blindly modifying regular expression
flags.
AUTHOR
Jeffrey Ryan Thalhammer <jeff@imaginative-software.com>
COPYRIGHT
Copyright (c) 2005-2011 Imaginative Software Systems. All 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 vPerl::Critic::Policy::RegularExpressions::RequireLineBoundaryMatching(3)
perl-critic 1.134.0 - Generated Tue Jun 4 14:48:50 CDT 2019