patch 1e24fbe344b94c6bd9a5d5cc75250227c80da5ee
Author: E. Bosch <presidev@AT@gmail.com>
Date:   Fri Feb  4 19:18:34 CET 2022
  * irc: Fix when nick is the current in NICK command
diff -rN -u old-irgramd/irc.py new-irgramd/irc.py
--- old-irgramd/irc.py	2024-11-22 21:27:46.083632374 +0100
+++ new-irgramd/irc.py	2024-11-22 21:27:46.083632374 +0100
@@ -150,6 +150,9 @@
         self.logger.debug('Handling NICK: %s', nick)
 
         ni = nick.lower()
+        current = user.irc_nick.lower() if user.irc_nick else None
+        if ni == current:
+            return
         if not user.valid_nick(nick):
             await self.reply_code(user, 'ERR_ERRONEUSNICKNAME', (nick,), '*')
         elif ni in self.users.keys():
@@ -158,7 +161,6 @@
              or user.local_auth(nick, self.conf['irc_nicks'], user.recv_pass, self.conf['irc_password'], self.conf['pam']):
             if user.registered:
                 # rename
-                current = user.irc_nick.lower()
                 await self.send_users_irc(user, 'NICK', (nick,))
                 del self.users[current]
                 for ch in self.irc_channels.keys():