the following markdown code `foo [["bar"]]` generates the following output: foo ?"bar" Perhaps this is a bug in the markdown processor?

This has nothing to do with markdown; wikilinks and directives are not part of markdown, and just get expanded to html before markdown processing. There is a bug open about this: wiki links still processed inside code blocks Note that escaping the wikilink with a slash will avoid it being expanded to html. --Joey