[GHC] #7650: can't use combining characters in identifiers

[GHC]

#7650: can't use combining characters in identifiers
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        Reporter:  guest         |            Owner:
            Type:  bug           |           Status:  new
        Priority:  normal        |        Milestone:  7.8.1
       Component:  Compiler      |          Version:  7.6.2
      Resolution:                |         Keywords:
Operating System:  Linux         |     Architecture:  x86
 Type of failure:  None/Unknown  |       Difficulty:  Unknown
       Test Case:                |       Blocked By:
        Blocking:                |  Related Tickets:
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Comment (by nomeata):

 GHC already uses alex-3.1.0; that alone did not fix it.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7650#comment:4>
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