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elliot (8136)

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Journal of elliot (8136)

Sunday March 23, 2008
11:32 AM

The single most useful perlcritic command-line option.

[ #35963 ]
For me, it's --single-policy.

Generally, Perl::Critic is being used indirectly via a test using Test::P::C or Test::P::C::Progressive, with a perlcriticrc file that is in the distribution's t/ directory.

The most common reason I have for running perlcritic is when there's a Test::P::C::Progressive failure. In that case, I'm looking for violations of an individual policy to fix to get the violation count down.

--single-policy overrides all other selection criteria for policies. Its value, like the ones for the --include and --exclude options, is used as a regex applied against policy names with the /i, /m, and /x options applied to it. So, for example, if I want to scan for violations of Modules::RequireNoMatchVarsWithUseEnglish in the current directory, I can simply say

perlcritic --single-policy english .

When cleaning up a body of code, I find it easier to fix one kind of problem at a time in a bunch of files, rather than fixing all kinds of problems a single file at a time.

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