From 2ec308a8b59fb9348fef73a1d18afb64c4e8c8bb Mon Sep 17 00:00:00 2001
From: nfreear <nfreear>
Date: Tue, 11 Dec 2007 14:01:17 +0000
Subject: [PATCH] Fixes MDL-12539 "Help link text for all admin/user filters
 are broken". Merged.

---
 lib/weblib.php | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/weblib.php b/lib/weblib.php
index e2fb8154444..bc83f937e39 100644
--- a/lib/weblib.php
+++ b/lib/weblib.php
@@ -5802,7 +5802,7 @@ function editorhelpbutton(){
  * @return string
  * @todo Finish documenting this function
  */
-function helpbutton ($page, $title='', $module='moodle', $image=true, $linktext=false, $text='', $return=false,
+function helpbutton ($page, $title, $module='moodle', $image=true, $linktext=false, $text='', $return=false,
                      $imagetext='') {
     global $CFG, $COURSE;
 
@@ -5817,6 +5817,10 @@ function helpbutton ($page, $title='', $module='moodle', $image=true, $linktext=
         $module = 'moodle';
     }
 
+    if ($title == '' && $linktext == '') {
+        debugging('Error in call to helpbutton function: at least one of $title and $linktext is required');
+    }
+
     // Warn users about new window for Accessibility
     $tooltip = get_string('helpprefix2', '', trim($title, ". \t")) .' ('.get_string('newwindow').')';