[Xmonad] darcs patch: XPrompt: fixes a nasty bug in getLastWord

[Donald Bruce Stewart]

mailing_list:
> On Thu, Aug 16, 2007 at 01:55:38PM +1000, Donald Bruce Stewart wrote:
> > The instability in this module is a little concerning: any way you can
> > write some tests for it? (Perhaps use QC to generate strings or
> > something?). 
> > 
> > Proper QuickCheck tests for the pure code would be welcome, and reassure
> > users. I can give some examples, if you're unsure with QuickCheck.
> 
> I'm a bit concerned too, indeed. And yes, I'm going to test it with
> QC. 
> 
> I'm going to study QC, but your examples would be much appreciated.

There's a quick intro I wrote here,

    http://haskell.org/haskellwiki/Introduction_to_QuickCheck

And you can use the examples in xmonad/tests/