anchor.diff:  urls_are_hosted([Urls|Rest], Host, Node) ->
       Hosted =
           lists:foldl(
  -          fun (<<"tag://", _/binary>> = T, false) ->
  +          fun (<<"tag://", T/binary>>, false) ->
                     tag_is_hosted(T, Host, Node, ?MAX_TAG_OP_RETRIES);
                 (Url, false) ->
                     case ddfs_util:parse_url(Url) of
  
positive.code:             exit(Pid, force_timeout)
      end.
  
  -spec hosted_tags(nonempty_string()) -> [object_name()] | {'error', term()}.
  hosted_tags(Host) ->
      case catch ddfs_master:get_tags(safe) of
          {ok, Tags} ->
              Node = disco:slave_node(Host),
              lists:foldl(
                fun (_T, {error, _} = E) ->
                        E;
  
negative.code:             E
      end.
  
  -spec urls_are_hosted([[url()]], host(), node())
                       -> boolean() | {'error' | term()}.
  urls_are_hosted([], _Host, _Node) ->
      false;
  