From 5a7bd4884a359c60e09e39538b870f5df23cad7e Mon Sep 17 00:00:00 2001
From: Michael <heluecht@pirati.ca>
Date: Mon, 27 Sep 2021 20:26:08 +0000
Subject: [PATCH] Issue 10772: Avoid duplicated links in AP posts

---
 src/Content/Text/BBCode.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Content/Text/BBCode.php b/src/Content/Text/BBCode.php
index b2fb1da7af..d0c19c616f 100644
--- a/src/Content/Text/BBCode.php
+++ b/src/Content/Text/BBCode.php
@@ -424,10 +424,12 @@ class BBCode
 	public static function removeAttachment($body, $no_link_desc = false)
 	{
 		return preg_replace_callback("/\s*\[attachment (.*?)\](.*?)\[\/attachment\]\s*/ism",
-			function ($match) use ($no_link_desc) {
+			function ($match) use ($body, $no_link_desc) {
 				$attach_data = self::getAttachmentData($match[0]);
 				if (empty($attach_data['url'])) {
 					return $match[0];
+				} elseif (strpos(str_replace($match[0], '', $body), $attach_data['url']) !== false) {
+					return '';
 				} elseif (empty($attach_data['title']) || $no_link_desc) {
 					return " \n[url]" . $attach_data['url'] . "[/url]\n";
 				} else {