From 59d410ebb41a295c631bbc873659d7813dff50f4 Mon Sep 17 00:00:00 2001
From: Eric Merrill <merrill@oakland.edu>
Date: Tue, 21 Aug 2012 00:24:55 -0400
Subject: [PATCH] MDL-34363 gradebook Adding check to prevent incorrect
 override when a blank feedback is submitted.

---
 grade/report/grader/lib.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/grade/report/grader/lib.php b/grade/report/grader/lib.php
index 3f6681e5454..70eb9b2bf6c 100644
--- a/grade/report/grader/lib.php
+++ b/grade/report/grader/lib.php
@@ -225,7 +225,7 @@ class grade_report_grader extends grade_report {
                 $changedgrades = true;
 
             } else if ($datatype === 'feedback') {
-                if ($oldvalue->feedback === $postedvalue) {
+                if (($oldvalue->feedback === $postedvalue) or ($oldvalue->feedback === NULL and empty($postedvalue))) {
                     continue;
                 }
             }
-- 
2.17.1