svoid nlLogic_fillBattleSpace_withFailed2(NLLogicChecker_v2 c, final L<RuleWithParams> battleSpace, bool debug) {
  VF2<IfThen, NLLogicChecker_v2.Matching> onRuleFired = voidfunc(IfThen rule, NLLogicChecker_v2.Matching m) {
    battleSpace.add(new RuleWithParams(rule, m.matches));
  };
  VF4<IfThen, NLLogicChecker_v2.Matching, L<Exp>, Exp> onRuleFailed = voidfunc(IfThen rule, NLLogicChecker_v2.Matching m, L<Exp> satisfiedConditions, Exp remaining) {
    //print("satisfied conditions: " + satisfiedConditions);
    battleSpace.add(new FailedRule(rule, m.matches, cloneListOrNull(nullIfEmpty(satisfiedConditions)), remaining));
  };
  
  print("Iterating over " + n2(c.rules, "rule"));
  applyNLLogicFacts_v4_iterate_withFailed2_verbose.set(debug);
  applyNLLogicFacts_v4_iterate_withFailed2(c, onRuleFired, onRuleFailed, c.rules);
}

Began life as a copy of #1018320