From 4ba4ecfa96b1808d546744f40cd6ea25332e3fbf Mon Sep 17 00:00:00 2001
From: Dan Poltawski <dan@moodle.com>
Date: Mon, 17 Apr 2017 12:17:18 +0100
Subject: [PATCH] MDL-58486 userprefs: clarifying comment

---
 lib/moodlelib.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/moodlelib.php b/lib/moodlelib.php
index 109aeaa8ecd..23314747c85 100644
--- a/lib/moodlelib.php
+++ b/lib/moodlelib.php
@@ -1932,6 +1932,7 @@ function set_user_preference($name, $value, $user = null) {
 
     // Update value in cache.
     $user->preference[$name] = $value;
+    // Update the $USER in case where we've not a direct reference to $USER.
     if ($user !== $USER && $user->id == $USER->id) {
         $USER->preference[$name] = $value;
     }
@@ -2004,6 +2005,7 @@ function unset_user_preference($name, $user = null) {
 
     // Delete the preference from cache.
     unset($user->preference[$name]);
+    // Update the $USER in case where we've not a direct reference to $USER.
     if ($user !== $USER && $user->id == $USER->id) {
         unset($USER->preference[$name]);
     }