arens :: HsExpr id -> Bool
-- True of expressions for which '(e)' and 'e'
-- mean the same thing
hsExprNeedsParens (ArithSeq {})       = False
hsExprNeeds
hsExprNeedsParens :: HsExpr id -> Bool
hsExprNeedsParens (ArithSeq {})       = False
hsExprNeedsParens (ArithSeq {})       = False