[xmonad] silly behavior of killWord in XMonad.Prompt

[Norbert Zeh]

Brent Yorgey [2012.04.24 1007 -0400]:
> Thoughts?  If anyone really likes the old behavior then I can make two
> versions.  Or if there is consensus that the old behavior is silly and
> the new behavior is better, then I'll just push the above change.  I
> could also be talked into swapping the order of the break and
> dropWhile in order to emulate vim; I don't really care as long as it's
> one of the two.

My 2c: I think the old behaviour is silly and am in favour of fixing it.  I'm a
70% emacs, 30% vim user, so I lean a bit more towards an emacsesque solution.

Cheers,
Norbert