From 5c819a2c6c96ce1f3375f4d263ce4943d6a9cdf5 Mon Sep 17 00:00:00 2001
From: Simon Ser <contact@emersion.fr>
Date: Mon, 6 Dec 2021 19:23:28 +0100
Subject: [PATCH] Disallow ',' in nicknames

It breaks lists as in `PRIVMSG a,b,c :foo`.
---
 downstream.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/downstream.go b/downstream.go
index afb6cfc..5a219c6 100644
--- a/downstream.go
+++ b/downstream.go
@@ -208,8 +208,8 @@ func updateNetworkAttrs(record *Network, attrs irc.Tags, subcommand string) erro
 
 // ' ' and ':' break the IRC message wire format, '@' and '!' break prefixes,
 // '*' and '?' break masks, '$' breaks server masks in PRIVMSG/NOTICE,
-// "*" is the reserved nickname for registration
-const illegalNickChars = " :@!*?$"
+// "*" is the reserved nickname for registration, ',' breaks lists
+const illegalNickChars = " :@!*?$,"
 
 // permanentDownstreamCaps is the list of always-supported downstream
 // capabilities.