[Haskell] ASCII higher than 127

[Andreas Marth]

How was that with Haskell and Unicode???

While up to ghc-6.4.2 the following function worked it now doesn't compile:

isSpezGermanChar :: Char -> Bool
isSpezGermanChar 'ä' = True
isSpezGermanChar 'ö' = True
isSpezGermanChar 'ü' = True
isSpezGermanChar 'Ä' = True
isSpezGermanChar 'Ö' = True
isSpezGermanChar 'Ü' = True
isSpezGermanChar 'ß' = True
isSpezGermanChar  _  = False

(For those of you who will only read garbage it are/were some letters from
the german alphabet.)

I hoped we move forward to easier internationalization.

Any ideas what to do now? (I would like to keep the code readable and not
use '\220' and so on.

Thanks,
Andreas