From 6ba5241054beaa596aafc853788c89ff66c75667 Mon Sep 17 00:00:00 2001
From: Val Lorentz <progval+git@progval.net>
Date: Fri, 19 Apr 2024 15:30:11 +0200
Subject: [PATCH] Advertise UTF8ONLY ISUPPORT token

We already return an ERROR on non-UTF8 message.

The spec recommends FAIL, but does not require it.
---
 sable_ircd/src/server/mod.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sable_ircd/src/server/mod.rs b/sable_ircd/src/server/mod.rs
index 66e50bfc..0cdcf009 100644
--- a/sable_ircd/src/server/mod.rs
+++ b/sable_ircd/src/server/mod.rs
@@ -178,6 +178,9 @@ impl ClientServer {
         ret.add(ISupportEntry::simple("INVEX"));
         ret.add(ISupportEntry::simple("FNC"));
 
+        // https://ircv3.net/specs/extensions/utf8-only
+        ret.add(ISupportEntry::simple("UTF8ONLY"));
+
         ret.add(ISupportEntry::int(
             "MONITOR",
             config.monitor.max_per_connection.into(),