// returns only rules that actually changed (keeping the IDs)
static L<TextCommentsID> gazelle_transformRulesUsingWordMap(SS map, L<TextCommentsID> rules) {
  new L<TextCommentsID> out;
  for (TextCommentsID t : rules) {
    TextCommentsID t2 = new(
      replaceWords_includingCamelCase(map, t.text),
      replaceWords_includingCamelCase(map, t.comments),
      t.id);
    if (neq(t.text, t2.text)) out.add(t2);
  }
  ret out;
}