[Xmonad] darcs patch: catch exceptions when calling user-written code.

[David Roundy]

On Thu, Oct 11, 2007 at 06:35:49PM -0700, David Roundy wrote:
> This is an amended version of this patch (with its long comment
> modified to match), since sjanssen didn't like the whenJust
> catching.
> 
> David
> 
> Thu Oct 11 21:33:05 EDT 2007  David Roundy <droundy at darcs.net>
>   * catch exceptions when calling user-written code.
>   This is a minimal approach that only catches error
>   in actual user-written code.

Just to be clear, this is the one that I'd like applied.

David