static class FNonMarkedAsList extends FunctionImpl {
  public O process(Object _in) {
    String in = cast _in;
    L<int> m = getFindMarkers2(in);
    new L<S> list;
    for (int i = 0; i < m.size(); i += 2) {
      int from = i == 0 ? 0 : m.get(i-1);
      int to = i == m.size()-1 ? in.length() : m.get(i);
      if (to > from)
        list.add(in.substring(from, to));
    }
    ret list;
  }
  
  static L<int> getFindMarkers2(String s) {
    L<int> l = new ArrayList<Integer>();
    int i = 0;
    while (i < s.length()) {
      int j = s.indexOf("[[", i);
      if (j < 0) break;
      int k = s.indexOf("]]", j+2);
      if (k < 0) break;
      l.add(j);
      l.add(k+2);
      i = k+2;
    }
    return l;
  }
}