waylan/Python-Markdown — pull request #174 by joshourisman (2013-01-08 16:15:34+00:00)
Title: Allow for html_class to be determined dynamically based on the wikilink's label.

In some cases it's desirable that the class applied to a wikilink be dynamic based on context; e.g. if you want to style wikilinks to pages that already exist differently from pages that don't yet exist. This change allows for that.