UTF-8 encode/decode libraries.

[David Brown]

I am writing some utilities to deal with UTF-8 encoded text files (not
source).  Currently, I'm just reading in the UTF-8 directly, and things
work reasonably well, since my parse tokens are ASCII, they are easy to
parse.

However, the character type seems perfectly happy with larger values for
each character.

Is anyone aware of any Haskell libraries for doing UTF-8 decoding and
encoding?  If not, I'll write something simple.

Thanks,
Dave Brown