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Manual Reference Pages  -  PERL::CRITIC::POLICY::REGULAREXPRESSIONS::REQUIREDOTMATCHANYTHING (3)

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NAME

Perl::Critic::Policy::RegularExpressions::RequireDotMatchAnything - Always use the "/s" modifier with regular expressions.

CONTENTS

AFFILIATION

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

DESCRIPTION

When asked what . in a regular expression means, most people will say that it matches any character, which isn’t true. It’s actually shorthand for [^\n]. Using the s modifier makes . act like people expect it to.



    my $match = m< foo.bar >xm;  # not ok
    my $match = m< foo.bar >xms; # ok



CONFIGURATION

This Policy is not configurable except for the standard options.

NOTES

Be cautious 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.

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perl v5.20.3 PERL::CRITIC::POLICY::REGULAREXPRESSIONS::REQUIREDOTMATCHANYTHING (3) 2016-04-03

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