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    <p>Which version of GHC are you using? Older versions especially didn't do unicode I/O very well. </p> <p>This section in the GHC documentation describes how to change input/output encodings:</p> <p><a href="http://haskell.org/ghc/docs/6.12.2/html/libraries/base-4.2.0.1/System-IO.html#23" rel="noreferrer">http://haskell.org/ghc/docs/6.12.2/html/libraries/base-4.2.0.1/System-IO.html#23</a></p> <p>Also, the documentation says this:</p> <blockquote> <p>A text-mode Handle has an associated TextEncoding, which is used to decode bytes into Unicode characters when reading, and encode Unicode characters into bytes when writing.</p> <p>The default TextEncoding is the same as the default encoding on your system, which is also available as localeEncoding. (GHC note: on Windows, we currently do not support double-byte encodings; if the console's code page is unsupported, then localeEncoding will be latin1.)</p> <p>Encoding and decoding errors are always detected and reported, except during lazy I/O (hGetContents, getContents, and readFile), where a decoding error merely results in termination of the character stream, as with other I/O errors.</p> </blockquote> <p>Maybe this has something to do with your problem? If GHC has defaulted to something other than utf-8 somewhere, or your handle has been manually set to use a different encoding, that might explain the problem. If you're just trying to echo text at the console, then probably some kind of console code-page funniness is going on. I know I've had similar problems in the past with other languages like Python and printing unicode in a windows console.</p> <p>Try running <code>hSetEncoding handle utf8</code> and see if it fixes your problem. </p>
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    1. POHow does GHC/Haskell decide what character encoding it's going to decode/encode from/to?
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    1. COSummary: if you're echoing to the console/stdout, it's probably something to do with your system default encoding, or GHC defaulting to latin1 on windows.
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    2. COFYI, it is not a Windows problem, and I don't think it's a terminal-specific problem either. I'm running on Ubuntu with a locale of en_US.UTF-8. `cat /etc/default/locale` yields `LANG="en_US.UTF-8"`, and `echo $LANG` yields `en_US.UTF-8`.
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