patch 2de0ad1de382e090f44ded877cd0f66bcf257165
Author: E. Bosch <presidev@AT@gmail.com>
Date:   Sun Jan 30 21:50:58 CET 2022
  * irc: In TOPIC and JOIN commands fix bad use of entity cache, was producing
  wrong topic result
diff -rN -u old-irgramd/irc.py new-irgramd/irc.py
--- old-irgramd/irc.py	2024-10-23 04:22:16.696386274 +0200
+++ new-irgramd/irc.py	2024-10-23 04:22:16.700386267 +0200
@@ -281,7 +281,7 @@
 
         chan = channel.lower()
         real_chan = self.get_realcaps_name(chan)
-        await self.irc_channel_topic(user, real_chan)
+        await self.irc_channel_topic(user, real_chan, [None])
 
     async def handle_irc_ping(self, user, payload):
         self.logger.debug('Handling PING: %s', payload)
@@ -483,7 +483,7 @@
         self.irc_channels_ops[chan].discard(user.irc_nick)
         self.irc_channels_founder[chan].discard(user.irc_nick)
 
-    async def irc_channel_topic(self, user, channel, entity_cache=[None]):
+    async def irc_channel_topic(self, user, channel, entity_cache):
         chan = channel.lower()
         topic = await self.tg.get_channel_topic(chan, entity_cache)
         timestamp = await self.tg.get_channel_creation(chan, entity_cache)