static L<PairS> html_linksPlusContents(LS tok) {
  new LPair<S> out;
  for (LS tokA : findContainerTag(tok, "a")) {
    S link = containerTagParams(tokA, "href");
    if (nempty(link))
      out.add(pair(link, join(contentsOfContainerTag(tokA))));
  }
  ret out;
}

static L<PairS> html_linksPlusContents(S html) {
  ret html_linksPlusContents(htmlTok(html));
}