[GHC] #13602: Pattern syntax in expression context must be clarified

[GHC]

#13602: Pattern syntax in expression context must be clarified
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        Reporter:  vanto             |                Owner:  (none)
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.2
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Incorrect         |  Unknown/Multiple
  error/warning at compile-time      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by goldfire):

 I think to move this forward, we need 3 things:
  1. A concrete example (chunk of Haskell code)
  2. What GHC does with this code today
  3. What you would like GHC to do with this code
 Sometimes, several examples (each with points 1, 2, and 3) are helpful.

 ''Separately'' (either above or below), explain your motivation. It can be
 hard sometimes when the motivation and concrete examples are mixed
 together.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13602#comment:2>
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