From 651e255ddb1003606eeedf0a9463f029c72c3f96 Mon Sep 17 00:00:00 2001
From: Simon Ser <contact@emersion.fr>
Date: Fri, 4 Jun 2021 19:17:39 +0200
Subject: [PATCH] Use ISUPPORT CHANTYPES in Client.isChannel

---
 lib/client.js | 4 ++--
 lib/irc.js    | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/lib/client.js b/lib/client.js
index 3f6f93e..a2057d6 100644
--- a/lib/client.js
+++ b/lib/client.js
@@ -467,8 +467,8 @@ export default class Client extends EventTarget {
 	}
 
 	isChannel(name) {
-		// TODO: use the ISUPPORT token if available
-		return irc.STD_CHANNEL_TYPES.indexOf(name[0]) >= 0;
+		var chanTypes = this.isupport.get("CHANTYPES") || irc.STD_CHANTYPES;
+		return chanTypes.indexOf(name[0]) >= 0;
 	}
 
 	setPingInterval(sec) {
diff --git a/lib/irc.js b/lib/irc.js
index 34df11b..6c0508c 100644
--- a/lib/irc.js
+++ b/lib/irc.js
@@ -43,7 +43,7 @@ export const ERR_SASLABORTED = "906";
 export const ERR_SASLALREADY = "907";
 
 export const STD_MEMBERSHIPS = "~&@%+";
-export const STD_CHANNEL_TYPES = "#&+!";
+export const STD_CHANTYPES = "#&+!";
 export const STD_CHANMODES = "beI,k,l,imnst";
 
 const tagEscapeMap = {