// tok = parsed with htmlTok
static LS findAllTagsNamed(LS tok, S tag) {
  new LS out;
  for (int i = 1; i < l(tok); i += 2)
    if (isTag(tok.get(i), tag))
      out.add(tok.get(i));
  ret out;
}

static LS mapMethodLike findAllTagsNamed(S tag, LS tok) {
  ret findAllTagsNamed(tok, tag);
}

// Note the reversed parameters
static LS mapMethodLike findAllTagsNamed(S tag, S html) {
  ret findAllTagsNamed(htmlTok(html), tag);
}

Began life as a copy of #1009190