static L<GazelleTree> gazelle_reason_repeat_v2(S input1, O... _) {
  int max = 10;
  
  new L<GazelleTree> out;
  Set<S> seen = litCISet(input1);
  LinkedList<S> queue = ll_linkedList(input1);
  
  while (nempty(queue) && l(seen) < max) {
    S input = popFirst(queue);
    addAll(out, (L<GazelleTree>) callF(optPar sendToModules(_), input));
      
    L<GazelleTree> l = gazelle_reasonWithPreAndPost(input, paramsMinus(_, 'sendToModules));
    
    // commit to one entry
    
    if (empty(l)) continue;
    gazelle_sortBeforeCommit(l, _);
    
    GazelleTree t = first(l);
    if (boolPar debug(_) || boolPar debugCommit(_))
      print("Committing to: " + t.line + " (out of " + l(l) + ")");

    RuleEngine2.Rule r = t.rule();
    if (r == null || !contains(r.outTypes, "process"))
      continue with out.add(t); // normal line
      
    // separate lines & add to queue
    
    LS lines = tok_splitAtPlusAtBeginningOfLine(t.line);
    for i over lines: {
      S line = lines.get(i);
      if (eqGet(r.outTypes, i, "process"))
        addWithTesterSet(queue, seen, line);
      else {
        t.line = line;
        out.add(t);
        t = null;
      }
    }
  }
  
  ret out;
}

Began life as a copy of #1022481