Perl::Critic::Policy::RegularExpressions::RequireBracesForMultiline - Use { and } to delimit multi-line regexps.
{
}
This Policy is part of the core Perl::Critic distribution.
Long regular expressions are hard to read. A good practice is to use the x modifier and break the regex into multiple lines with comments explaining the parts. But, with the usual // delimiters, the beginning and end can be hard to match, especially in a s/// regexp. Instead, try using {} characters to delimit your expressions.
x
//
s///
{}
Compare these:
s/ <a \s+ href="([^"]+)"> (.*?) </a> /link=$1, text=$2/xms;
vs.
s{ <a \s+ href="([^"]+)"> (.*?) </a> } {link=$1, text=$2}xms;
Is that an improvement? Marginally, but yes. The curly braces lead the eye better.
There is one option for this policy, allow_all_brackets. If this is true, then, in addition to allowing {}, the other matched pairs of (), [], and <> are allowed.
allow_all_brackets
()
[]
<>
Initial development of this policy was supported by a grant from the Perl Foundation.
Chris Dolan <cdolan@cpan.org>
Copyright (c) 2007-2011 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
To install Perl::Critic, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Perl::Critic
CPAN shell
perl -MCPAN -e shell install Perl::Critic
For more information on module installation, please visit the detailed CPAN module installation guide.