Path capitalisation woes

[sawyl]

Spent the afternoon scraping together a bit of cold to solve a fun little maths puzzle, after which I extracted an old tar file in the same directory, relying on the fact that the directory name in the archive was in lower case and the directory name with the puzzle solution was in capitalised. So imagine my surprise when OS X helpfully extracted the old files into the capitalised directory, trashing my code. And imagine my annoyance when I realised that I'd switched off Time Machine to allow me to shuffle around a handful of transient data files and had forgotten to switch it on again afterwards...