From 32f5bec23ae7a4289568c5df0c8be8084d252db7 Mon Sep 17 00:00:00 2001
From: Alex Kirk <akirk@users.noreply.github.com>
Date: Fri, 27 Jan 2023 12:13:41 +0100
Subject: [PATCH] Protect tags from being broken

---
 includes/class-hashtag.php | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/includes/class-hashtag.php b/includes/class-hashtag.php
index 356cdb9..2b7fa54 100644
--- a/includes/class-hashtag.php
+++ b/includes/class-hashtag.php
@@ -43,8 +43,22 @@ class Hashtag {
 	 * @return string the filtered post-content
 	 */
 	public static function the_content( $the_content ) {
+		$protected_tags = array();
+		$the_content = preg_replace_callback(
+			'#<[^>]+>#i',
+			function( $m ) use ( &$protected_tags ) {
+				$c = count( $protected_tags );
+				$protect = '!#!#PROTECT' . $c . '#!#!';
+				$protected_tags[ $protect ] = $m[0];
+				return $protect;
+			},
+			$the_content
+		);
+
 		$the_content = \preg_replace_callback( '/' . ACTIVITYPUB_HASHTAGS_REGEXP . '/i', array( '\Activitypub\Hashtag', 'replace_with_links' ), $the_content );
 
+		$the_content = str_replace( array_keys( $protected_tags ), array_values( $protected_tags ), $the_content );
+
 		return $the_content;
 	}