I've decided to take a stab at hacking mediawiki (hacking at articles is '''so''' passé), and in the interest of starting small, here's a fix for special:Mycontributions, which is otherwise broken on a clean default install.
I'm not sure how to find out whether the FullURL already contains a ?, so I'm cheating and using the (much prettier) / syntax instead. I assume that doesn't give any other problems?