also ban cloak because ngircd's line matching is useless

i dont know why we are entertaining pasting multiple
duplicate lines in a channel, but this commit will avoid
banning for that.

bam.py

@@ -20,6 +20,10 @@ class Server(BaseServer):
                 self.__getattribute__("on_" + line.command.lower())(line)
             )
 
+    # disable automatic WHOing
+    async def _next_who(self):
+        pass
+
     async def line_send(self, line):
         print(f"{self.name} > {line.format()}")
 
@@ -33,8 +37,9 @@ class Server(BaseServer):
         if line.params[1] in self.isoper:
             self.isoper.remove(line.params[1])
             return
-        await self.send_raw(BADLINE.format(line.params[2].split()[3]))
         await self.send_raw(KILL.format(line.params[1]))
+        await self.send_raw(BADLINE.format(line.params[2].split()[3]))
+        await self.send_raw(BADLINE.format(line.params[2].split()[4]))
 
     async def on_privmsg(self, line):
         nick = line.hostmask.nickname
@@ -51,10 +56,14 @@ class Server(BaseServer):
             self.log[nick].pop(0)
             return
 
+        channels = []
         for msg in self.log[nick][:-1]:
+            channels.append(msg[1])
             if msg[2] != line.params[1]:
                 return
 
+        if len(set(channels)) < 2:
+            return
 
         await self.send(build("WHOIS",[nick,nick]))
         await self.send_raw(LOG.format(nick,','.join(set([ln[1] for ln in self.log[nick]]))))