From 99cb656df08bb987066beaebbff800528b94cc5c Mon Sep 17 00:00:00 2001
From: Valentin Lorentz <progval+git@progval.net>
Date: Fri, 12 Jun 2020 19:11:15 +0200
Subject: [PATCH] NickAuth: Detect extended-join based on capability.

It's more reliable than just checking the number of arguments
(eg. if a network decides to add its own set of arguments in
a way incompatible with extended-join).
---
 plugins/NickAuth/plugin.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/plugins/NickAuth/plugin.py b/plugins/NickAuth/plugin.py
index 9c39fdf43..1ddcb11be 100644
--- a/plugins/NickAuth/plugin.py
+++ b/plugins/NickAuth/plugin.py
@@ -188,8 +188,7 @@ class NickAuth(callbacks.Plugin):
             self._auth(irc, msg.prefix, account)
 
     def doJoin(self, irc, msg):
-        if len(msg.args) < 2:
-            # extended-join is not supported
+        if 'extended-join' not in irc.state.capabilities_ack:
             return
 
         account = msg.args[1]