static bool match3_plusBrackets(S pat, S s) {
  return match3_plusBrackets(pat, s, null);
}

static bool match3_plusBrackets(S pat, S s, Matches matches) {
  if (pat == null || s == null) return false;
  ret match3_plusBrackets(pat, parse3_plusBrackets_cachedInput(s), matches);
}
  
static boolean match3_plusBrackets(S pat, L<S> toks, Matches matches) {
  L<S> tokpat = parse3_cachedPattern(pat);
  ret match3(tokpat, toks, matches);
}