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.
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.
Initial development of this policy was supported by a grant from the Perl Foundation.
Chris Dolan <cdolan@cpan.org>
Copyright (c) 2007-2008 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