[GHC] #720: Map/Set range function

[GHC]

#720: Map/Set range function
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 Reporter:  jpbernardy       |          Owner:         
     Type:  feature request  |         Status:  new    
 Priority:  normal           |      Milestone:  6.8    
Component:  libraries/base   |        Version:  6.4.1  
 Severity:  normal           |     Resolution:         
 Keywords:  collections      |     Difficulty:  Unknown
 Testcase:  N/A              |   Architecture:  Unknown
       Os:  Unknown          |  
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Changes (by igloo):

  * milestone:  => 6.8
  * testcase:  => N/A

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/720>
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