Hi all, It seems the Quasiquotation page on HaskellWiki http://www.haskell.org/haskellwiki/Quasiquotation has fallen behind the actually Quasiquotation implementation that is in ghc-7.4.2 and later. Specifically, the QuasiQuoter constructor that the Wiki takes two parameters: data QuasiQuoter = QuasiQuoter { quoteExp :: String -> Q Exp , quotePat :: String -> Q Pat } while the one in ghc-7.4 and later takes four: data QuasiQuoter = QuasiQuoter { quoteExp :: String -> Q Exp , quotePat :: String -> Q Pat , quoteType :: String -> Q Type , quoteDec :: String -> Q [Dec] } I'm just starting out with quasquotation and am not yet qualified to update this page myself. Erik -- ---------------------------------------------------------------------- Erik de Castro Lopo http://www.mega-nerd.com/