Let's try this location for our placement of a dynamic channel.

src/callbacks.py

@@ -1081,10 +1081,6 @@ class Privmsg(irclib.IrcCallback):
 
     def __call__(self, irc, msg):
         # This is for later dynamic scoping.
-        if msg.args and irc.isChannel(msg.args[0]):
-            channel = msg.args[0]
-        else:
-            channel = None
         if msg.command == 'PRIVMSG':
             if self.noIgnore or not ircdb.checkIgnored(msg.prefix,msg.args[0]):
                 self.__parent.__call__(irc, msg)

src/irclib.py

@@ -733,6 +733,10 @@ class Irc(IrcCommandDispatcher):
         """Called by the IrcDriver; feeds a message received."""
         msg.tag('receivedBy', self)
         msg.tag('receivedOn', self.network)
+        if msg.args and self.isChannel(msg.args[0]):
+            channel = msg.args[0]
+        else:
+            channel = None
         log.debug('Incoming message: ' + str(msg).rstrip('\r\n'))
 
         # Yeah, so this is odd.  Some networks (oftc) seem to give us certain