[GHC] #7658: Support empty record update syntax

[GHC]

#7658: Support empty record update syntax
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Reporter:  glguy             |          Owner:                  
    Type:  feature request   |         Status:  new             
Priority:  normal            |      Component:  Compiler        
 Version:  7.6.2             |       Keywords:                  
      Os:  Unknown/Multiple  |   Architecture:  Unknown/Multiple
 Failure:  None/Unknown      |      Blockedby:                  
Blocking:                    |        Related:                  
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Comment(by glguy):

 I guess this would cause a problem typing expressions like:
 {{{
 \x -> x{}
 }}}

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7658#comment:1>
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