That's what `type` (or in zsh, `whence`) is for. Aliasing `which` just makes the behavior of running `which` slightly less predictable, and if what you actually

That's what `type` (or in zsh, `whence`) is for. Aliasing `which` just makes the behavior of running `which` slightly less predictable, and if what you actually want is the behavior of the `which` program, you then need to (know to) run `command which` instead.