On (new) systems where commands are still missing, it is often a little
surprise when commands do not work after zsh-syntax-highlighting colored
them green. That's why I do not want alias to be created when they just
wrap a command with the same name without the command existing.
There also cases like `rm` where I do not want to type out `command rm`
every time just because `trash` is not installed.
druckdev
fc2d811856
