[xmonad] darcs patch: make prompt window width configurable

[Samir Unni]

On 01/18/2011 03:51 AM, jochen.keil at gmail.com wrote:
>    This allows the prompt window to be placed at the center of the screen with a
>    custom width (defaults to spanning the whole screen)

Would it be possible to get an option to have it placed at the left or 
right side of the screen instead?