[GHC] #7783: MultiWayIf should start a new layout

[GHC]

#7783: MultiWayIf should start a new layout
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        Reporter:  exbb2              |            Owner:
            Type:  bug                |           Status:  new
        Priority:  normal             |        Milestone:  7.8.1
       Component:  Compiler (Parser)  |          Version:  7.6.2
      Resolution:                     |         Keywords:
Operating System:  Unknown/Multiple   |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown       |       Difficulty:  Unknown
       Test Case:                     |       Blocked By:
        Blocking:                     |  Related Tickets:  #4359
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Changes (by simonpj):

 * cc: simonmar (added)
 * status:  closed => new
 * resolution:  fixed =>


Comment:

 Simon, would it be possible to document the design in the user manual?
 For example, is it now possible to explain it by saying that a multi-way
 'if' is a layout herald, so that your example behaves thus?
 {{{
  x = if { | False -> if { | False -> 1
                         ; | False -> 2 }

         ; | True -> 3 }
 }}}
 Am I allowed to put the braces and semicolons in myself?  Does the close
 brace get put in just before the first token to the left of the initial
 "|"?

 Thanks

 Simon

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7783#comment:8>
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