[Haskell] Weird field name mangling.

L.S., consider the following code:

module TestZ where

import Data.Generics

data TestZ = TestZ { testz :: Int } deriving (Show, Read, Eq, Typeable, Data)

main = print $ constrFields . toConstr $ TestZ { testz = 2 }

I would expect this to output ["testz"]. Instead it outputs ["testzz"], using GHCi 6.4.1. Why is that z doubled? Doei, Arthur. -- /\ / | arthurvl@cs.uu.nl | Work like you don't need the money /__\ / | A friend is someone with whom | Love like you have never been hurt / \/__ | you can dare to be yourself | Dance like there's nobody watching