@b0rk this is really good. I didn't know about `which -a` - there's always something still to learn.

I don't know if it's worth adding zsh-specific things, but when I was using zsh I really liked the interactive editing of variables like path via e.g. `vared path`, or append to it with just `path+=newdir`

Being able to just edit the variable and not have to remember to include its previous value, etc. was nice.