[xmonad] Escape key and multiple actions

[wagnerdm at seas.upenn.edu]

Quoting Mattias Pettersson <mattiaspgames at gmail.com>:

> I would like to know(if possible) how to make the key escape do
> whatever it does as default behaviour and also do something more at
> the same time.

I've never seen a really satisfactory way to do this. It's one of  
xmonad's few warts, I think.
~d