App::pmgrep - Print lines from installed Perl module sources matching a pattern


This document describes version 0.738 of App::pmgrep (from Perl distribution App-PMUtils), released on 2021-12-03.




 pmgrep(%args) -> [$status_code, $reason, $payload, \%result_meta]

Print lines from installed Perl module sources matching a pattern.

This is a like the Unix command grep but instead of specifying filenames, you specify module names or prefixes. The utility will search module source files from Perl's @INC.


 # Find pre-increment in all Perl module files
 % pmgrep '\+\+\$'
 # Find some pattern in all Data::Sah::Coerce::* modules (note ** wildcard for recursing)
 % pmgrep 'return ' Data::Sah::Coerce::**

This function is not exported.

Arguments ('*' denotes required arguments):

  • all => true

    Require all patterns to match, instead of just one.

  • color => str (default: "auto")

  • count => true

    Supress normal output, return a count of matching lines.

  • dash_prefix_inverts => bool

    When given pattern that starts with dash "-FOO", make it to mean "^(?!.*FOO)".

    This is a convenient way to search for lines that do not match a pattern. Instead of using -v to invert the meaning of all patterns, this option allows you to invert individual pattern using the dash prefix, which is also used by Google search and a few other search engines.

  • ignore_case => bool

  • invert_match => bool

    Invert the sense of matching.

  • line_number => true

  • modules => perl::modnames

    If not specified, all installed Perl modules will be searched.

  • pattern => str

  • pm => bool (default: 1)

    Whether to include .pm files.

  • pmc => bool

    Whether to include .pmc files.

  • pod => bool

    Whether to include .pod files.

  • quiet => true

  • recursive => true

  • regexps => array[str]

Returns an enveloped result (an array).

First element ($status_code) is an integer containing HTTP-like status code (200 means OK, 4xx caller error, 5xx function error). Second element ($reason) is a string containing error message, or something like "OK" if status is 200. Third element ($payload) is the actual result, but usually not present when enveloped result is an error response ($status_code is not 2xx). Fourth element (%result_meta) is called result metadata and is optional, a hash that contains extra information, much like how HTTP response headers provide additional metadata.

Return value: (any)


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Source repository is at


perlancar <>


To contribute, you can send patches by email/via RT, or send pull requests on GitHub.

Most of the time, you don't need to build the distribution yourself. You can simply modify the code, then test via:

 % prove -l

If you want to build the distribution (e.g. to try to install it locally on your system), you can install Dist::Zilla, Dist::Zilla::PluginBundle::Author::PERLANCAR, and sometimes one or two other Dist::Zilla plugin and/or Pod::Weaver::Plugin. Any additional steps required beyond that are considered a bug and can be reported to me.


This software is copyright (c) 2021, 2020, 2019, 2018, 2017, 2016, 2015, 2014 by perlancar <>.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.


Please report any bugs or feature requests on the bugtracker website

When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.