From 48b96e4385e52bcf9dc17e694273e0e72a5eff57 Mon Sep 17 00:00:00 2001
From: "google-labs-jules[bot]"
 <161369871+google-labs-jules[bot]@users.noreply.github.com>
Date: Fri, 13 Mar 2026 08:45:07 +0000
Subject: [PATCH] =?UTF-8?q?=E2=9A=A1=20[perf]=20optimize=20string=20concat?=
 =?UTF-8?q?enation=20in=20resolveDiscordRefs?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Co-authored-by: hobbyistlabs-coder <267281733+hobbyistlabs-coder@users.noreply.github.com>
---
 pkg/channels/discord/discord.go | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/pkg/channels/discord/discord.go b/pkg/channels/discord/discord.go
index f7e3b7bfd..661378f85 100644
--- a/pkg/channels/discord/discord.go
+++ b/pkg/channels/discord/discord.go
@@ -578,6 +578,11 @@ func (c *DiscordChannel) resolveDiscordRefs(s *discordgo.Session, text string, g
 
 	// 2. Expand Discord message links (max 3, same guild only)
 	matches := msgLinkRe.FindAllStringSubmatch(text, 3)
+	if len(matches) == 0 {
+		return text
+	}
+	var sb strings.Builder
+	sb.WriteString(text)
 	for _, m := range matches {
 		if len(m) < 4 {
 			continue
@@ -595,10 +600,10 @@ func (c *DiscordChannel) resolveDiscordRefs(s *discordgo.Session, text string, g
 		if msg.Author != nil {
 			author = msg.Author.Username
 		}
-		text += fmt.Sprintf("\n[linked message from %s]: %s", author, msg.Content)
+		fmt.Fprintf(&sb, "\n[linked message from %s]: %s", author, msg.Content)
 	}
 
-	return text
+	return sb.String()
 }
 
 // stripBotMention removes the bot mention from the message content.