Description: Now
that perl's Lint has support for plugins, I'd like to publicize that a
bit and hopefully demystisize the process of writing lint detectors a
bit.

Through the use of plugins for B::Lint and Perl::Critic,
programmers can add warnings and other validation. I'll demonstrate how
to add create new warnings to flag bad code. There'll be a breezy tour
of the optree using B::Concise and how to match bad stuff.