I just tried to correct a spelling mistake in Hipchat by pressing Ctrl + .

Hey so, for those who don't know, you have to do "s/bad/good". It's a a bit flaky (as with a lot of things in HipChat), but it works for most things.

Edit: it tends to not like replacing slashes, and you can only do it for 1min after you submit your message, and if it's the last message you sent.