[GHC] #11727: Allow one type signature for multiple pattern synonyms

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Fri Jul 1 12:21:23 UTC 2016


#11727: Allow one type signature for multiple pattern synonyms
-------------------------------------+-------------------------------------
        Reporter:  mpickering        |                Owner:  mpickering
            Type:  feature request   |               Status:  closed
        Priority:  normal            |            Milestone:  8.2.1
       Component:  Compiler          |              Version:  7.10.3
      Resolution:  fixed             |             Keywords:
                                     |  PatternSynonyms
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
                                     |  patsyn/should_compile/T11727
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D2083
       Wiki Page:                    |
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Changes (by bgamari):

 * status:  new => closed
 * resolution:   => fixed


@@ -6,1 +6,1 @@
- {{{
+ {{{#!hs

New description:

 There's no reason why we shouldn't allow the same type signature for
 multiple pattern synonyms just like ordinary functions.

 For example,

 {{{#!hs
 pattern A,B,C,D :: Int
 pattern A = 5
 pattern B = 6
 pattern C = 7
 pattern D = 8
 }}}

--

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11727#comment:3>
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