anchor.diff:                      Name = mango_idx:name(Idx),
                       fabric:query_view(Db, DDoc, Name, CB, Cursor, Args)
               end,
  -            {ok, LastCursor#cursor.user_acc}
  +            case Result of
  +                {ok, LastCursor} ->
  +                    {ok, LastCursor#cursor.user_acc};
  +                {error, Reason} ->
  +                    {error, Reason}
  +            end
       end.
   
   
  
positive.code:     case couch_util:get_value(id, RowProps) of
          <<"_design/", _/binary>> -> true;
          _ -> false
      end.
negative.code:                 include_docs = true
              },
              Args = apply_opts(Cursor#cursor.opts, BaseArgs),
              Result = case mango_idx:def(Idx) of
                  all_docs ->
                      CB = fun ?MODULE:handle_all_docs_message/2,
                      fabric:all_docs(Db, CB, Cursor, Args);
  