[hiccuphippo]

I would have pressed Ctrl-Z in my editor like mad until I got the file. If I was using vim I could even grep for it through my history files, thanks to vim-persisted-undo.

[cimi_]

Jetbrains IDEs have 'Local History' that keeps a record of all edits to files - I looked in mine now and I have changes from more than 3w ago :)