diff --git a/lib/db/index.html b/lib/db/index.html
index 8d1c8b69c3f..8b137891791 100644
--- a/lib/db/index.html
+++ b/lib/db/index.html
@@ -1 +1 @@
- 
+
diff --git a/lib/editor/tinymce/module.js b/lib/editor/tinymce/module.js
index eedc3e1146b..8871c4feace 100644
--- a/lib/editor/tinymce/module.js
+++ b/lib/editor/tinymce/module.js
@@ -91,7 +91,7 @@ M.editor_tinymce.filepicker = function(target_id, url, type, win) {
         } else if (type == 'image') {
             // When image button clicked.
             options = M.editor_tinymce.filepicker_options[editor_id]['image'];
-        } 
+        }
 
         options.formcallback = M.editor_tinymce.filepicker_callback;
         options.editor_target = win.document.getElementById(target_id);
diff --git a/lib/index.html b/lib/index.html
index 8d1c8b69c3f..8b137891791 100644
--- a/lib/index.html
+++ b/lib/index.html
@@ -1 +1 @@
- 
+
diff --git a/message/module.js b/message/module.js
index f0d17c1273f..dc4ee7a7324 100644
--- a/message/module.js
+++ b/message/module.js
@@ -5,10 +5,10 @@ M.core_message.init_focus = function(Y, eid) {
 };
 
 M.core_message.init_refresh_page = function(Y, delay, url) {
-	var delay_callback = function() {
-		document.location.replace(url);
-	};
-	setTimeout(delay_callback, delay);
+    var delay_callback = function() {
+        document.location.replace(url);
+    };
+    setTimeout(delay_callback, delay);
 };
 
 M.core_message.combinedsearchgotfocus = function(e) {
@@ -111,4 +111,4 @@ M.core_message.init_editsettings = function(Y) {
     }
 
     editsettings.init();
-}
\ No newline at end of file
+}
diff --git a/message/settings.html b/message/settings.html
index 308afe75a5c..1f75ddb3c8d 100644
--- a/message/settings.html
+++ b/message/settings.html
@@ -14,7 +14,7 @@
     <tr valign="top">
         <td align="right"><input type="checkbox" name="beepnewmessage" id="beepnewmessage" <?php echo $cbbeepnewmessage ?>  /></td>
         <td colspan="2"><label for="beepnewmessage"><?php print_string('beepnewmessage', 'message') ?></label></td>
-    </tr> 
+    </tr>
 
     <tr valign="top">
         <td colspan="3" align="center"><br /><input type="submit" value="<?php print_string('savemysettings', 'message') ?>" /></td>
diff --git a/mod/assignment/assignment.js b/mod/assignment/assignment.js
index 8e77ad923c5..07c1af3642b 100644
--- a/mod/assignment/assignment.js
+++ b/mod/assignment/assignment.js
@@ -13,8 +13,8 @@ function saveNext(){
 }
 
 function initNext(nextid, usserid) {
-	assignment.nextid = nextid;
-	assignment.userid = userid;
+    assignment.nextid = nextid;
+    assignment.userid = userid;
 }
 
 M.mod_assignment = {};
diff --git a/mod/chat/gui_header_js/users.php b/mod/chat/gui_header_js/users.php
index 246417c98aa..56d9ee6aea4 100644
--- a/mod/chat/gui_header_js/users.php
+++ b/mod/chat/gui_header_js/users.php
@@ -89,7 +89,6 @@ foreach ($chatusers as $chatuser) {
     $min = $min < 10 ? '0'.$min : $min;
     $sec = $sec < 10 ? '0'.$sec : $sec;
     $idle = $min.':'.$sec;
-    
 
     $row = array();
     $row[0] = $OUTPUT->user_picture($chatuser, array('courseid'=>$courseid, 'popup'=>true));
diff --git a/mod/quiz/module.js b/mod/quiz/module.js
index 5e505f918be..14bb6f68e43 100644
--- a/mod/quiz/module.js
+++ b/mod/quiz/module.js
@@ -95,7 +95,7 @@ M.mod_quiz.timer = {
     update: function() {
         var Y = M.mod_quiz.timer.Y;
         var secondsleft = Math.floor((M.mod_quiz.timer.endtime - new Date().getTime())/1000);
-        
+
         // If this is a preview and time expired, display timeleft 0 and don't renew the timer.
         if (M.mod_quiz.timer.preview && secondsleft < 0) {
             Y.one('#quiz-time-left').setContent('0:00:00');
diff --git a/rss/index.html b/rss/index.html
index 8d1c8b69c3f..8b137891791 100644
--- a/rss/index.html
+++ b/rss/index.html
@@ -1 +1 @@
- 
+
diff --git a/tags.txt b/tags.txt
index 39607e31c1d..189996d74f4 100644
--- a/tags.txt
+++ b/tags.txt
@@ -1,7 +1,7 @@
 Generating a tags file
 ======================
 
-If you need a tags file so that you can jump around Moodle code 
+If you need a tags file so that you can jump around Moodle code
 easily in your editor (eg vim or emacs), you can generate one:
 
 Exuberant ctags (default on Linux, can be compiled on other platforms):