From a59fdc67ce9b57dea3d67f7c434a4cfb44594750 Mon Sep 17 00:00:00 2001
From: Les De Ridder <les@lesderid.net>
Date: Wed, 14 Oct 2020 06:52:42 +0200
Subject: [PATCH] Send ERR_NOSUCHCHANNEL on TOPIC for non-existent channel
 (non-strict)

---
 source/ircd/connection.d | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/source/ircd/connection.d b/source/ircd/connection.d
index 610913d..dfdf2f6 100644
--- a/source/ircd/connection.d
+++ b/source/ircd/connection.d
@@ -657,10 +657,16 @@ class Connection
                     && (!(c.modes.canFind('s') || c.modes.canFind('p')) || c.members.canFind(this))))
             {
                 //NOTE: The RFCs don't allow ERR_NOSUCHCHANNEL as a response to TOPIC
-                //TODO: If RFC-strictness is off, do send ERR_NOSUCHCHANNEL
-                send(Message(_server.name, "331", [
-                            nick, channelName, "No topic is set"
-                        ], true));
+                version (BasicFixes)
+                {
+                    sendErrNoSuchChannel(channelName);
+                }
+                else
+                {
+                    send(Message(_server.name, "331", [
+                                nick, channelName, "No topic is set"
+                            ], true));
+                }
             }
             else
             {