static L<GazelleFulfillment> gazelle_revisitFulfillmentsForMsg(long msgID) {
  GazelleLine line = dm_discord_lineForMsgID(msgID);
  if (line == null) null;
  new L<GazelleFulfillment> out;
  gazelle_gatherFulfillments(ll(line), out);
  ret out;
}