Yeah, but, first off, the person doing the code tour usually doesn't know enough to go look things up in Mercurial (there's your answer!) and second, we have very few committers (right now fu is the only active one) -- everything else goes through the Bugzilla patch queue -- so poor Fu would get more than her fair share of blame :)

(In this case, the unknown-people were a) someone who English-stripped /poll and related files as part of another project and didn't know there was a bug open to English-strip it, and b) me, making a change to the userinfo of an official journal and then closing the bug, so that isn't even something that goes through Mercurial in the first place!)