[Haskell-cafe] writeFile: commitBuffer: invalid argument (Illegal byte sequence)

[dokondr]

Hi,
In  GHC 7.0.3 / Mac OS X when trying to:

writeFile  "someFile" "(Hoping You Have A iPhone When I Do This) Lol Sleep
Is When You Close These ---> \55357\56384"

I get:
commitBuffer: invalid argument (Illegal byte sequence)

The string I am trying to write can also be seen here:
http://twitter.com/#!/search/Hoping%20You%20Have%20A%20iPhone%20When%20I%20Do%20This%20lang%3Aen<http://twitter.com/#%21/search/Hoping%20You%20Have%20A%20iPhone%20When%20I%20Do%20This%20lang%3Aen>

It looks like 'writeFile' can not write unicode characters.
Any workarounds?

Thanks!
Dmitri
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