From e1dccb8562d20cb48e5d17f4f38ab2a687af1da7 Mon Sep 17 00:00:00 2001
From: Hubert Hirtz <hubert@hirtzfr.eu>
Date: Thu, 18 Jun 2020 17:55:47 +0200
Subject: [PATCH] irc: Strip lone backslashes from tag values

According to the message-tags spec:

> If a lone \ exists at the end of an escaped value (with no escape
> character following it), then there SHOULD be no output character. For
> example, the escaped value test\ should unescape to test.

https://ircv3.net/specs/extensions/message-tags
---
 assets/irc.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/assets/irc.js b/assets/irc.js
index 37bb4cb..6766a1b 100644
--- a/assets/irc.js
+++ b/assets/irc.js
@@ -36,6 +36,9 @@ function parseTags(s) {
 		for (var ch in tagsEscape) {
 			v = v.replaceAll(tagsEscape[ch], ch);
 		}
+		if (v.endsWith("\\")) {
+			v = v.slice(0, v.length - 1)
+		}
 		tags[k] = v;
 	});
 	return tags;