sS ahref_possiblyTargetBlank(S link, O contents, bool targetBlank, O... params) {
  ret ahref(link, contents, targetBlank ? paramsPlus(params, target := "_blank") : params);
}

sS ahref_possiblyTargetBlank(bool targetBlank, S link, O contents, O... params) {
  ret ahref_possiblyTargetBlank(link, contents, targetBlank, params);
}