[GHC] #4471: Incorrect Unicode output on Windows Console

[GHC]

#4471: Incorrect Unicode output on Windows Console
-------------------------+--------------------------------------------------
    Reporter:  sankeld   |        Owner:                             
        Type:  bug       |       Status:  new                        
    Priority:  normal    |    Milestone:                             
   Component:  Compiler  |      Version:  6.12.3                     
    Keywords:            |     Testcase:                             
   Blockedby:            |   Difficulty:                             
          Os:  Windows   |     Blocking:                             
Architecture:  x86       |      Failure:  Incorrect result at runtime
-------------------------+--------------------------------------------------

Comment(by simonmar):

 Replying to [comment:5 sankeld]:

 > `_setmode` then is a solution only when the console is set to the
 Unicode code page. This seems like an adequate solution for now, no?
 >
 > Here is the link for the _setmode documentation:
 >
 > http://msdn.microsoft.com/en-us/library/tw4k6df8.aspx

 I don't like to apply a fix without fully understanding what the problem
 is and why the fix works, and this is all very mysterious to me right now.
 Why doesn't it work to send UTF-8 to stdout if the current code page is
 set to UTF-8?

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4471#comment:6>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler