I am looking for a way to define an Emacs-style keys sequence as a keyboard shortcut in Linux - Specifically, in Gnome, but more general solutions are also acceptable.

For example, I would like a sequence like "Alt-w t" (that is, first press Alt-w and then t) to open a terminal, "Alt-w c" to close a window, and so on.

The rationale behind this question is twofold:

1. Make more use of desktop-wide keyboard shortcuts
2. Make an old keyboard, that has no Win key, usable with desktop-wide keyboard shortcuts, without causing too many collisions with application - Specifically with Emacs.

Thanks!