svoid dm_gazelle_matchStep_additionalInput(GazelleTree t, SS inputsByType, O... _) {
  if (t.rule() == null) ret;
  bool debug = boolPar debug(_);
  TextAndType next = get(t.rule().insWithType, t.mr.iCond);
  if (next == null || !startsWith(next.type, "history-")) ret;
  if (ai_ruleEngine2_matchStep(t.mr, inputsByType, true, _)) {
    if (debug) print("Input match OK. new map: " + t.mr.map + ". Updating prediction.");
    gazelle_addPredictionToTreeNode(t);
  } else
    if (debug) print("Input match failed");
}

Began life as a copy of #1022069