ghc-exactprint-1.9.0.0: tests/examples/pre-ghc910/SlidingLambda.hs
{-# LANGUAGE ImplicitParams #-}
foo = choice flips $ map (\p -> \b -> let ?pat = p in match s{ flips = b }) ps
{-# LANGUAGE ImplicitParams #-}
foo = choice flips $ map (\p -> \b -> let ?pat = p in match s{ flips = b }) ps