NAME¶
Perl::Critic::Policy::ValuesAndExpressions::ProhibitQuotesAsQuotelikeOperatorDelimiters
- Don't use quotes ("'", """, "`") as
delimiters for the quote-like operators.
AFFILIATION¶
This Policy is part of the core Perl::Critic distribution.
DESCRIPTION¶
With the obvious exception of using single-quotes to prevent interpolation,
using quotes with the quote-like operators kind of defeats the purpose of them
and produces obfuscated code, causing problems for future maintainers and
their editors/IDEs.
$x = q"q"; #not ok
$x = q'q'; #not ok
$x = q`q`; #not ok
$x = qq"q"; #not ok
$x = qr"r"; #not ok
$x = qw"w"; #not ok
$x = qx`date`; #not ok
$x =~ m"m"; #not ok
$x =~ s"s"x"; #not ok
$x =~ tr"t"r"; #not ok
$x =~ y"x"y"; #not ok
$x =~ m'$x'; #ok
$x =~ s'$x'y'; #ok
$x = qr'$x'm; #ok
$x = qx'finger foo@bar'; #ok
CONFIGURATION¶
This policy has three options: "single_quote_allowed_operators",
"double_quote_allowed_operators", and
"back_quote_allowed_operators", which control which operators are
allowed to use each of "'", """, "`" as
delimiters, respectively.
The values allowed for these options are a whitespace delimited selection of the
"m", "q", "qq", "qr", "qw",
"qx", "s", "tr", and "y" operators.
By default, double quotes and back quotes (backticks) are not allowed as
delimiters for any operators and single quotes are allowed as delimiters for
the "m", "qr", "qx", and "s"
operators. These defaults are equivalent to having the following in your
.perlcriticrc:
[ValuesAndExpressions::ProhibitQuotesAsQuotelikeOperatorDelimiters]
single_quote_allowed_operators = m s qr qx
double_quote_allowed_operators =
back_quote_allowed_operators =
SUGGESTED BY¶
Michael Schwern
AUTHOR¶
Elliot Shank "<perl@galumph.com>"
COPYRIGHT¶
Copyright (c) 2007-2011 Elliot Shank.
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.