Happens on the Mac a lot when typing a pipe character (Alt+7), and
keeping the Alt key pressed down for a bit too long, so instead of
Space, you're typing Alt+Space. This rule replaces the Alt+Space with a
simple Space character.
$ ps -ef | grep foo
-bash: grep: command not found
$ fuck
ps -ef | grep foo
Nils Winkler
f1cce413b3