[GHC] #11679: Quasi-quoting syntax is ambiguous with list comprehensions

[GHC]

#11679: Quasi-quoting syntax is ambiguous with list comprehensions
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        Reporter:  bgamari           |                Owner:
            Type:  bug               |               Status:  patch
        Priority:  low               |            Milestone:
       Component:  Compiler          |              Version:  7.10.3
  (Parser)                           |
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D1981
       Wiki Page:                    |
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Comment (by bgamari):

 Here's an example (due to hvr) which will compile with and without
 `-XQuasiQuotes` but will produce different results,

 {{{#!hs
 import Text.Heredoc (here)

 x :: String
 x = [here| here <- ['h','e','r','e']] -- |]
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11679#comment:3>
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