[xmonad] does this xmonad support utf8?

[Chengqi(Lars) Song]

im using arch linux and this is the official build file:

>   runhaskell Setup.lhs configure --ghc --prefix=/usr \
>   			                      --libsubdir=\$compiler/site-local/\$pkgid || return 1
>  
>   runhaskell Setup.lhs build || return 1

is utf8 supported by default? if not, how to add utf8 support? 

i want to display window title with chinese characters in xmobar, but it always does not work.

thanks
lars