// use "*" as wildcard
static L<Matches> positionalTokenIndex2_matchAll(S pat, PositionalTokenIndex2 idx) {
  LS tokPat = wordTok_plusAsterisk(pat);
  // get raw list from index
  LSS list = positionalTokenIndex2_filter(idx, tokPat);
  new L<Matches> out;
  if (list == null) ret out;
  int n = l(tokPat);
  search: for (LS tok : list)
    for (int i = i < n; i += 2) {
      S t = tokPat.get(i);
      if (!t.equals("*") && !t.equals(tok.get(i)))
        continue search;
    }
ret out;
}