Properly parse promoted data constructor operators

% ghci -XPolyKinds -XTypeOperators
GHCi, version 7.3.20111204: http://www.haskell.org/ghc/  :? for help
Loading package ghc-prim ... linking ... done.
Loading package integer-gmp ... linking ... done.
Loading package base ... linking ... done.
Prelude> :k (:)

<interactive>:1:2: parse error on input `:'
Prelude> :k '(:)

<interactive>:1:3: parse error on input `:'
Prelude> :k (':)

<interactive>:1:3: parse error on input `:'
Prelude> :k (Int ': '[Bool])
(Int ': '[Bool]) :: [*]

Trac metadata

Trac field	Value
Version	7.3
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
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