[GHC] #1886: GHC API should preserve and provide access to comments

[GHC]

#1886: GHC API should preserve and provide access to comments
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    Reporter:  claus                                              |        Owner:         
        Type:  bug                                                |       Status:  new    
    Priority:  normal                                             |    Milestone:         
   Component:  GHC API                                            |      Version:  6.9    
    Severity:  normal                                             |   Resolution:         
    Keywords:  GHC API, comments, program transformation, layout  |     Testcase:         
Architecture:  Unknown                                            |           Os:  Unknown
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Changes (by claus):

  * keywords:  => GHC API, comments, program transformation, layout

Comment:

 i forgot one important example of program transformations that would also
 need layout preservation: version updates to follow library api changes. i
 think someone once started a business with this kind of thing?-)

 related ticket: #1467 (api reorganisation of stages)

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1886#comment:1>
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