static bool tok_sameTest(L<S> tok, S text) {
  int iTok = 0, iText = 0, nTok = l(tok), nText = l(text);
  while (iTok < nTok) {
    S t = tok.get(iTok++);
    int n = l(t);
    if (n == 0) continue;
    if (!t.regionMatches(0, text, iText, n)) false;
    iText += n;
  }
  ret iText == nText;
}