#NAME

Perl::Critic::Policy::Modules::RequireNoMatchVarsWithUseEnglish - use English must be passed a -no_match_vars argument.

#AFFILIATION

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

#DESCRIPTION

Due to unfortunate history, if you use the English module but don't pass in a -no_match_vars argument, all regular expressions in the entire program, not merely the module in question, suffer a significant performance penalty, even if you only import a subset of the variables.

use English;                              # not ok
use English '-no_match_vars';             # ok
use English qw< $ERRNO -no_match_vars >;  # ok
use English qw($OS_ERROR);                # not ok

In the last example above, while the match variables aren't loaded into your namespace, they are still created in the English namespace and you still pay the cost.

#CONFIGURATION

This Policy is not configurable except for the standard options.

#AUTHOR

Elliot Shank <perl@galumph.com>

#COPYRIGHT