How can I map additional shortcuts to an action, without losing the existing shortcuts for that action?
I have some computers running GNOME (some version 2, some version 3) with multiple keyboards (e.g. a notebook computer which is sometimes used with an external keyboard).
These keyboards provide different keys (e.g. some notebook computers don't have the separate cursor movement keys, instead providing only a number pad with these functions) and the keys available for shortcuts are therefore different on the same computer.
So for some functions (e.g. Switch to Previous Tab) need an additional keyboard shortcut (e.g. Ctrl + Number pad Page Up). But I can only seem to do that by replacing the existing shortcut for that function.
I need a way to add a shortcut without replacing existing ones. How can I do that?