anchor.diff:  %% @hidden
   acct_query4(Attributes, [{Attribute, Match} | T]) ->
   	case lists:keyfind(Attribute, 1, Attributes) of
  -		{Attribute, Match} ->
  +		{Attribute, Match1} when
  +				(Match1 == Match) or (Match == '_') ->
   			acct_query4(Attributes, T);
   		_ ->
   			false
  
positive.code: 	acct_query4(Attributes, T);
  acct_query4(_Attributes, []) ->
  	true.
  
negative.code: %% 	Successive calls use the new `Continuation' to read more events.
  %%
  %%
  auth_query(Continuation, Start, End, Protocol, Types, ReqAttrsMatch, RespAttrsMatch) ->
  	MFA = {?MODULE, auth_query, [Protocol, Types, ReqAttrsMatch, RespAttrsMatch]},
  	query_log(Continuation, Start, End, ?AUTHLOG, MFA).
  
  -spec auth_close() -> Result
  	when
  