[GHC] #719: error messages are too long sometimes

[GHC]

#719: error messages are too long sometimes
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    Reporter:  simonmar  |        Owner:             
        Type:  bug       |       Status:  new        
    Priority:  low       |    Milestone:             
   Component:  Compiler  |      Version:  6.4.1      
    Severity:  minor     |     Keywords:             
          Os:  Unknown   |   Difficulty:  Easy (1 hr)
Architecture:  Unknown   |  
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The depth limit stuff in the pretty printer could use some tweaking.  eg.
 see attached example.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/719>
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