[GHC] #11350: Allow visible type application in patterns

[GHC]

#11350: Allow visible type application in patterns
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        Reporter:  Iceland_jack      |                Owner:  (none)
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.1
      Resolution:                    |             Keywords:
                                     |  TypeApplications PatternSynonyms
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #11385, #13159,   |  Differential Rev(s):
  #13158                             |
       Wiki Page:                    |
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Comment (by simonpj):

 #13430 points to a case from Stack Overflow where this was needed in the
 wild.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11350#comment:16>
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