New features in the fish shell

Agreed 200%: I recalled by mistake commands like these from my (crazy long) bash history once or twice and now I'm trying hard to never let them get there in the first place.

Another trick I use (better safe twice than sorry) is this:

rm -rf ../current_directory/*

With completion it takes barely longer to type and it greatly reduces the chances of that command doing anything if recalled by accident.

Finally, there is of course:

mv * ~/Trash/

Only the last one would probably have stopped me from recursively deleting the target of a symbolic link while thinking I was just deleting the link itself...