NAME¶
Perl::Critic::Policy::RegularExpressions::RequireBracesForMultiline - Use
"{" and "}" to delimit multi-line regexps.
AFFILIATION¶
This Policy is part of the core Perl::Critic distribution.
DESCRIPTION¶
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.
CONFIGURATION¶
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.
CREDITS¶
Initial development of this policy was supported by a grant from the Perl
Foundation.
AUTHOR¶
Chris Dolan <cdolan@cpan.org>
COPYRIGHT¶
Copyright (c) 2007-2011 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