From e5bce700a904734778a3683bd5d59f1862e97dae Mon Sep 17 00:00:00 2001
From: Simon Ser <contact@emersion.fr>
Date: Sun, 16 Apr 2023 21:22:08 +0200
Subject: [PATCH] Panic if isHighlight is called with empty nick

Let's make sure callers never do this. We'd go into an infinite
loop previously.
---
 irc.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/irc.go b/irc.go
index 0e2c069..dbad3b1 100644
--- a/irc.go
+++ b/irc.go
@@ -228,6 +228,10 @@ func isWordBoundary(r rune) bool {
 }
 
 func isHighlight(text, nick string) bool {
+	if len(nick) == 0 {
+		panic("isHighlight called with empty nick")
+	}
+
 	for {
 		i := strings.Index(text, nick)
 		if i < 0 {