// The tail flush of a map must stay bounded by its own `)`: the `//` comment
// glued to `$second`'s last item must not be pulled into `$first`'s output
// (it is not own-line, so the unbounded same-line flush used to steal it).
$first: (
  a: 1,
  // own comment
  b: 2,
);
$second: (
  a: 1,
  b: 2, // stays here
);
