Do you think the bruise was caused by typing? I have an unexplained bruise on my ring finger, and I tend to be the thumpy loud kind of typist who hammers the keys and annoys rooms full of students. ;)

See above: no. It takes more than typing to bruise my fingers :-)

Ah, I'd been trying to imagine what kind of computer game you might have been playing excessively last night, which might require frequent bashing of the space bar... I suppose trn isn't really a game :-)

Though one might argue that thinking of trn as a complicated text-mode video game comes closer to excusing its UI quirks than any other attitude :-)