[GHC] #5592: Incorrect "redundant import" warning

[GHC]

#5592: Incorrect "redundant import" warning
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    Reporter:  ryantrinkle       |       Owner:                                   
        Type:  bug               |      Status:  new                              
    Priority:  normal            |   Component:  Compiler                         
     Version:  7.2.1             |    Keywords:                                   
    Testcase:                    |   Blockedby:                                   
          Os:  Unknown/Multiple  |    Blocking:                                   
Architecture:  Unknown/Multiple  |     Failure:  Incorrect warning at compile-time
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Comment(by simonpj@…):

 commit 0f6ab7766e8cd131ed50c76f3a381ee690c3a010
 {{{
 Author: Simon Peyton Jones <simonpj at microsoft.com>
 Date:   Wed Nov 2 10:18:00 2011 +0000

     Fix Trac #5592: unused-import warnings with dot-dot notation

     A subtle interaction between two complicate features!

  compiler/rename/RnEnv.lhs |   20 +++++++++++++-----
  compiler/rename/RnPat.lhs |   48
 +++++++++++++++++++++++++-------------------
  2 files changed, 41 insertions(+), 27 deletions(-)
 }}}

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5592#comment:1>
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