static S editSnippet(S id, S text) {
  if (isLocalSnippetID(id)) ret "Snippet saved" with saveLocalSnippet(id, text);
  ret editSnippet(id, text,
    standardCredentialsUser(), standardCredentialsPass());
}

static S editSnippet(S id, S text, S user, S pass) {
  if (!isSnippetID(id)) fail("Need snippet ID");
  Map query = litmap("id", parseSnippetID(id),
    "text", text,
    "_user", user,
    "_pass", pass,
    "len", lUtf8(text));
  S url = tb_mainServer() + "/tb-int/update_snippet_text.php";
  S page = doPost(query, url);
  if (!page.contains("OK"))
    fail("Error editing snippet " + id + ": " + quote(page));
  ret page + " - edited " + fsI(id);
}