That was intentional, but I hear your concerns. When all examples are filtered, the message says everything was filtered, so running everything. Maybe that's the way to go here. My thinking in changing it was that I'd be less confused to see nothing than to see the full backtrace with no other indication of why (i.e. what did I do wrong in the patterns? etc) but including a message and the full backtrace satisfies that confusion for me. WDYT?