anchor.diff:          ok
       end.
   
  +%% @doc Some url shorteners return HTML+Javascript, except for simple text-only browsers
   httpc_ua(Url) ->
       case is_url_shortener(Url) of
           true -> ?CURL_UA;
  
positive.code:         {error, _} = Error -> Error
      end.
  
  httpc_flush() ->
      receive
          {http, _} -> httpc_flush()
  
negative.code: is_url_shortener_1("goo.gl/" ++ _) -> true;
  is_url_shortener_1("lnkd.in/" ++ _) -> true;
  is_url_shortener_1("tinyurl.com/" ++ _) -> true;
  is_url_shortener_1("j.mp/" ++ _) -> true;
  is_url_shortener_1("fb.me/" ++ _) -> true;
  is_url_shortener_1("wp.me/" ++ _) -> true;
  is_url_shortener_1("gu.com/" ++ _) -> true;
  is_url_shortener_1("nyti.ms/" ++ _) -> true;
  is_url_shortener_1("s.vk.nl/" ++ _) -> true;
  is_url_shortener_1(_) -> false.
  