[GHC] #5267: Arrow command combinators

[GHC]

#5267: Arrow command combinators
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    Reporter:  peteg             |        Owner:                           
        Type:  bug               |       Status:  new                      
    Priority:  normal            |    Milestone:                           
   Component:  Compiler          |      Version:  7.0.3                    
    Keywords:                    |     Testcase:                           
   Blockedby:                    |   Difficulty:                           
          Os:  Unknown/Multiple  |     Blocking:                           
Architecture:  Unknown/Multiple  |      Failure:  GHC rejects valid program
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Changes (by simonpj):

 * cc: ross@… (added)


Comment:

 Adding Ross in the hope he can answer.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5267#comment:1>
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