[GHC] #10444: Tex.Read.Lex.lex broken

[GHC]

#10444: Tex.Read.Lex.lex broken
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        Reporter:  strake888         |                   Owner:  ekmett
            Type:  bug               |                  Status:  patch
        Priority:  normal            |               Milestone:  7.12.1
       Component:  Core Libraries    |                 Version:  7.10.1
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  Incorrect result  |  Unknown/Multiple
  at runtime                         |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Comment (by mfdyck.google):

 isPunctuation and isSymbol are defined in terms of GeneralCategory, which
 derives Read, and GHC.Read imports Text.Read.Lex. We could move
 GeneralCategory and generalCategory to GHC.Unicode and standalone derive
 Read instance in GHC.Read or Data.Char; acceptable?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10444#comment:6>
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