[GHC] #10623: Handling of ASCII encodings introduced in D898 breaks Unicode terminal detection

[GHC]

#10623: Handling of ASCII encodings introduced in D898 breaks Unicode terminal
detection
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        Reporter:  bgamari           |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  Compiler          |                 Version:  7.10.2-rc2
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  None/Unknown      |  Unknown/Multiple
      Blocked By:                    |               Test Case:  T8958a
 Related Tickets:  #10298, #7695     |                Blocking:
                                     |  Differential Revisions:  Phab:1059
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Changes (by bgamari):

 * differential:   => Phab:1059


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10623#comment:2>
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