NAME

       Perinci::CmdLine::Manual::HowTo::Debugging - How-to guides related to debugging

VERSION

       This document describes version 2.000.0 of Perinci::CmdLine::Manual::HowTo::Debugging
       (from Perl distribution Perinci-CmdLine), released on 2021-12-19.

DESCRIPTION

       If you encounter issues with Perinci::CmdLine, you can try these things to aid with
       debugging:

       Increase log level. Perinci::CmdLine uses Log::ger. If your command-line object is
       instantiated with "log" attribute set to true, you just need to specify "--verbose",
       "--debug", or "--trace" command-line options to see more logging statements:

        % your-cli --verbose ...
        % your-cli --debug ...
        % your-cli --trace ...
        % your-cli --log-level trace ... ;# ditto

       If your command-line object is not instantiated with "log" attribute set to true, you can
       enable logging with:

        % PERL5OPT=-MLog::ger::Screen LOG_LEVEL=info your-cli ...
        % PERL5OPT=-MLog::ger::Screen DEBUG=1 your-cli ...
        % PERL5OPT=-MLog::ger::Screen TRACE=1 your-cli ...

       Dump parsed arguments, internal data structures. If seeing log statements does not give
       clue, you can try dumping various data structures. This can be done with plugins. For
       example, to dump parsed command-line arguments after validation and then exit, you can use
       the following command (setting log level to trace is helpful to see the program flow and
       at what points the plugins are triggered):

        % PERINCI_CMDLINE_PLUGINS=-DumpArgs,-Exit@after_validate_args your-cli --trace ...

       Logging other components. See Log::ger::For::LWP, Log::ger::For::HTTP::Tiny,
       Log::ger::For::DBI, Log::ger::DBI::Query.

HOMEPAGE

       Please visit the project's homepage at <https://metacpan.org/release/Perinci-CmdLine>.

SOURCE

       Source repository is at <https://github.com/perlancar/perl-Perinci-CmdLine>.

SEE ALSO

       Log::ger

AUTHOR

       perlancar <perlancar@cpan.org>

CONTRIBUTING

       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.

COPYRIGHT AND LICENSE

       This software is copyright (c) 2021, 2018, 2017, 2016, 2015 by perlancar
       <perlancar@cpan.org>.

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

BUGS

       Please report any bugs or feature requests on the bugtracker website
       <https://rt.cpan.org/Public/Dist/Display.html?Name=Perinci-CmdLine>

       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.

perl v5.32.1                                2022-0Perinci::CmdLine::Manual::HowTo::Debugging(3pm)