[GHC] #3699: Wildcards in type functions

[GHC]

#3699: Wildcards in type functions
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        Reporter:                    |                   Owner:
  MartijnVanSteenbergen              |                  Status:  new
            Type:  feature request   |               Milestone:  7.12.1
        Priority:  low               |                 Version:  6.10.4
       Component:  Compiler (Type    |                Keywords:  newcomer
  checker)                           |            Architecture:
      Resolution:                    |  Unknown/Multiple
Operating System:  Unknown/Multiple  |               Test Case:
 Type of failure:  None/Unknown      |                Blocking:
      Blocked By:                    |  Differential Revisions:
 Related Tickets:                    |
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Comment (by dalaing):

 I thought about this a little last night and realised that the resolution
 should be the same as for unused type variables.  Your comment confirms
 that and gives a few hints on where to get started - so thanks heaps!

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/3699#comment:16>
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