Re: [Xmonad] darcs patch: Fix bug in noDuplicate invariant

bobstopper:

Fri May 25 15:08:42 JST 2007 Rob * Fix bug in noDuplicate invariant ws used by noDuplicates is actually a list of list of elements which will pretty rarely raise any flags even if the StackSet actually does contain duplicates. This patch concatenates ws to ensure the quickcheck property tests accurately.

Applied. -- Don