[GHC] #10762: On Windows, out-of-codepage characters can cause GHC build to fail

[GHC]

#10762: On Windows, out-of-codepage characters can cause GHC build to fail
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        Reporter:  snoyberg      |                   Owner:
            Type:  bug           |                  Status:  new
        Priority:  normal        |               Milestone:
       Component:  Compiler      |                 Version:  7.10.2
      Resolution:                |                Keywords:
Operating System:  Windows       |            Architecture:  x86_64 (amd64)
 Type of failure:  None/Unknown  |               Test Case:
      Blocked By:                |                Blocking:
 Related Tickets:                |  Differential Revisions:
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Comment (by rwbarton):

 (To expand on the last point: If your terminal is not actually configured
 to interpret console output as UTF-8 then you will not be able to read the
 warnings if GHC insisted on outputting UTF-8. And if it is configured to
 do so then why is the code page not set to 65001?)

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10762#comment:3>
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