static long parseSnippetURLOpt(S s) {
  if (empty(s)) ret 0;
  for (S pat : ll("tinybrain.de/(\\d+)", "show-snippet.php\\?id=(\\d+)",
    "(\\d+)\\.tinybrain\\.de")) {
    S id = regexpFirstGroupIC(pat, s);
    if (id != null) ret psI(id);
  }
  ret 0;
}