From 2c89cfb533c1ab3cab99eecc751c11bd848595d2 Mon Sep 17 00:00:00 2001
From: tjhunt <tjhunt>
Date: Fri, 4 May 2007 10:04:20 +0000
Subject: [PATCH] Matching qestion type was failing to correctly determine
 wheterh the student had changed their answer - further improvements. Merged
 from MOODLE_18_STABLE.

---
 question/type/match/questiontype.php | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/question/type/match/questiontype.php b/question/type/match/questiontype.php
index a94fd3a92a..352c3c5fad 100644
--- a/question/type/match/questiontype.php
+++ b/question/type/match/questiontype.php
@@ -369,8 +369,12 @@ class question_match_qtype extends default_questiontype {
     }
 
     function compare_responses($question, $state, $teststate) {
-        foreach ($state->responses as $i=>$sr){
-            if(empty($teststate->responses[$i]) || $state->responses[$i] != $teststate->responses[$i]){
+        foreach ($state->responses as $i=>$sr) {
+            if (empty($teststate->responses[$i])) {
+                if (!empty($state->responses[$i])) {
+                    return false;
+                }
+            } else if ($state->responses[$i] != $teststate->responses[$i]) {
                 return false;
             }
         }
-- 
2.39.5