-isSymOcc (OccName DataName s) = isLexConSym (decodeFS s)
-isSymOcc (OccName VarName s) = isLexSym (decodeFS s)
-isSymOcc other = False
+isSymOcc (OccName DataName s) = isLexConSym (decodeFS s)
+isSymOcc (OccName TcClsName s) = isLexConSym (decodeFS s)
+isSymOcc (OccName VarName s) = isLexSym (decodeFS s)
+isSymOcc other = False
+
+parenSymOcc :: OccName -> SDoc -> SDoc
+-- Wrap parens around an operator
+parenSymOcc occ doc | isSymOcc occ = parens doc
+ | otherwise = doc