refactored

msg_receiver.py

@@ -9,11 +9,13 @@ class MsgReceiver(MsgSink):
 		self.filter = filter
 
 	def is_msg(self, msg: MsgContainer):
+		res = False
 		try:
 			data = msg.data.decode(encoding="utf-8")
-			return re.match(self.filter, data)
+			res = re.match(self.filter, data) is not None
 		except UnicodeDecodeError:
 			pass
+		return res
 
 	def on_recv(self, msg: MsgContainer):
 		print(f"{self.name}: {msg}")