tl;dr

Choose a bug that has a reproducing case from the list of open issues. Get the Perl source from GitHub, and put the reproducing case into a test file that we have designed for the purpose, and submit a pull request to GitHub for it. That's it.

The test is marked as expected to fail. Having this test in place helps us in several ways. One is that sometimes having to write a test is the straw that leads a developer to think it's just too much trouble to tackle this. Another …