\begin{code}
instance (Outputable a) => Outputable (Bag a) where
- ppr EmptyBag = ptext SLIT("emptyBag")
- ppr (UnitBag a) = ppr a
- ppr (TwoBags b1 b2) = hsep [ppr b1 <> comma, ppr b2]
- ppr (ListBag as) = interpp'SP as
+ ppr bag = char '<' <> pprWithCommas ppr (bagToList bag) <> char '>'
\end{code}