Add a 'show' alias for the previously added 'info' command because it makes sense: https://twitter.com/pwithnall/status/1036895943004762112 https://gitlab.gnome.org/GNOME/gnome-shell/issues/1234
Completions are clearly helpful, in particular for extension UUIDs that are often lengthy strings containing random usernames. https://gitlab.gnome.org/GNOME/gnome-shell/issues/1234