[GHC] #4052: Two sided sections

[GHC]

#4052: Two sided sections
---------------------------------+------------------------------------------
    Reporter:  aavogt            |       Owner:              
        Type:  feature request   |      Status:  new         
    Priority:  normal            |   Component:  Compiler    
     Version:  6.12.2            |    Keywords:  section     
          Os:  Unknown/Multiple  |    Testcase:              
Architecture:  Unknown/Multiple  |     Failure:  None/Unknown
---------------------------------+------------------------------------------
 Allow sections to be functions of two arguments:

 {{{
 ( # c ## ) a b === a # c ## b
 }}}

 Where the associativities of ''#'' and ''##'' are then used.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4052>
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