> In particular, don't put "close this window" on control-W and "quit this application" on control-Q. I'm looking at you, Firefox.

I feel like on a Mac this is just about every single application. I actually thought this was an OS level shortcut and not something implemented by the applications themselves. Maybe it's offered out of the box but can be overridden? I'm not an Mac app dev so not sure how that all works.

I have accidentally hit the command-Q instead of command-W and it is very frustrating. I appreciate those apps that ask you to confirm quitting.