[Xmonad] darcs patch: change Dmenu functions to return IO/X (Maybe String)

[Devin Mullins]

On Sun, Oct 07, 2007 at 08:37:52AM +0200, Andrea Rossato wrote:
> I don't think this is a useful patch: runProcessWithInpunt was a
> useful function that returned a String. Checking for an empty string
> was enough.

Actually, Andrea conviced me on #xmonad. If there's consensus, I'll send a
reverse patch. :)