static void nlLogic_iterate_withOnFail2(final NLLogicChecker_v2 c, Exp e, final NLLogicChecker_v2.Matching m, final L<Exp> satisfiedConditions, final Runnable onMatch, final VF2<L<Exp>, Exp> onFail) {
  final new Flag anyResults;
  
  if (e cast And) {
    final Exp a = e.a, b = e.b;
    c.iterate_single(a, m, r {
      anyResults.raise();
      temp tempAddToList_exclusive(satisfiedConditions, a);
      nlLogic_iterate_withOnFail2(c, b, m, satisfiedConditions, onMatch, onFail);
    });
  } else
    c.iterate_single(e, m, r {
      anyResults.raise();
      callF(onMatch);
    });
    
  if (!anyResults.isUp())
    callF(onFail, satisfiedConditions, e);
}

Began life as a copy of #1018313