From 1a541a16f2e4c71dd1c3999ad901e57a007d8d4e Mon Sep 17 00:00:00 2001
From: dan <dan@clarun.xyz>
Date: Thu, 22 Jan 2026 12:28:32 -0800
Subject: [PATCH] Obfuscate reply URLs to suppress previews

---
 internal/matrixbot/bot.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/internal/matrixbot/bot.go b/internal/matrixbot/bot.go
index e5c6b2f..455df9b 100644
--- a/internal/matrixbot/bot.go
+++ b/internal/matrixbot/bot.go
@@ -416,7 +416,8 @@ func splitLinkLine(line string) (string, string, bool) {
 }
 
 func obfuscateURL(url string) string {
-	return url
+	// Break client-side link preview parsers while preserving readability.
+	return strings.Replace(url, "://", ":\u2060//", 1)
 }
 
 func isEncryptedInvite(evt *event.Event) bool {