[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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Comment (by Simon Marlow <marlowsd@?>):

 In [changeset:aab65608f9a26990b2c5083e4b65b9d1f6c9b48a/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="aab65608f9a26990b2c5083e4b65b9d1f6c9b48a"
 Add layout to MultiWayIf (#7783)

 This makes it possible to write

 x = if | False -> if | False -> 1
                      | False -> 2
        | True -> 3

 Layout normally inserts semicolons between declarations at the same
 indentation level, so I added optional semicolons to the syntax for
 guards in MultiWayIf syntax.  This is a bit of a hack, but the
 alternative (a special kind of layout that doesn't insert semicolons)
 seemed worse, or at least equally bad.
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7783#comment:6>
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