From d2924e641bb87169aff52a8f1fa3103ac93b3d39 Mon Sep 17 00:00:00 2001
From: Paul Holden <paulh@moodle.com>
Date: Tue, 6 Sep 2022 12:15:44 +0100
Subject: [PATCH] MDL-75656 tag: decode entities in tags element values.

---
 lib/form/tags.php | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/lib/form/tags.php b/lib/form/tags.php
index 28468134ac0..b1ac99f3fed 100644
--- a/lib/form/tags.php
+++ b/lib/form/tags.php
@@ -251,6 +251,13 @@ class MoodleQuickForm_tags extends MoodleQuickForm_autocomplete {
             return $this->_prepareValue([], $assoc);
         }
 
+        // Submitted tag data will be encoded, we want original text.
+        if (array_key_exists($this->getName(), $submitValues)) {
+            array_walk($submitValues[$this->getName()], static function(string &$tag): void {
+                $tag = html_entity_decode($tag);
+            });
+        }
+
         return parent::exportValue($submitValues, $assoc);
     }