diff --git a/modules/node/node.module b/modules/node/node.module
index 9ff58b0bf5ea7a74301693922dd56af2a7faa404..ef97886007d4bb475e960820830a42cd6ae0f38e 100644
--- a/modules/node/node.module
+++ b/modules/node/node.module
@@ -235,7 +235,7 @@ function node_teaser_js(&$form, &$form_state) {
 }
 
 /**
- * Ensure value of "teaser_include" checkbox is consistent with other form data 
+ * Ensure value of "teaser_include" checkbox is consistent with other form data.
  *
  * This handles two situations in which an unchecked checkbox is rejected:
  *
@@ -251,19 +251,19 @@ function node_teaser_js(&$form, &$form_state) {
  */
 function node_teaser_include_verify(&$form, &$form_state) {
   $message = '';
-  
+
   // $form['#post'] is set only when the form is built for preview/submit.
   if (isset($form['#post']['body']) && isset($form_state['values']['teaser_include']) && !$form_state['values']['teaser_include']) {
     // "teaser_include" checkbox is present and unchecked.
     if (strpos($form_state['values']['body'], '<!--break-->') === 0) {
-      // Teaser is empty string
+      // Teaser is empty string.
       $message = t('You specified that the summary should not be shown when this post is displayed in full view. This setting is ignored when the summary is empty.');
     }
     elseif (strpos($form_state['values']['body'], '<!--break-->') === FALSE) {
       // Teaser delimiter is not present in the body.
       $message = t('You specified that the summary should not be shown when this post is displayed in full view. This setting has been ignored since you have not defined a summary for the post. (To define a summary, insert the delimiter "&lt;!--break--&gt;" (without the quotes) in the Body of the post to indicate the end of the summary and the start of the main content.)');
     }
-    
+
     if (!empty($message)) {
       drupal_set_message($message, 'warning');
       // Pass new checkbox value on to preview/submit form processing.
diff --git a/modules/node/node.pages.inc b/modules/node/node.pages.inc
index 2295aa43ef0bec6ee9a2a3e73c93f1e6f9fd28ac..ddbf243f335f5ca9f2ac94b08ba80b663dc83761 100644
--- a/modules/node/node.pages.inc
+++ b/modules/node/node.pages.inc
@@ -414,7 +414,7 @@ function node_preview($node) {
  */
 function theme_node_preview($node) {
   $output = '<div class="preview">';
-  
+
   $preview_trimmed_version = FALSE;
   // Do we need to preview trimmed version of post as well as full version?
   if (isset($node->teaser) && isset($node->body)) {
@@ -428,7 +428,7 @@ function theme_node_preview($node) {
       $preview_trimmed_version = TRUE;
     }
   }
-  
+
   if ($preview_trimmed_version) {
     drupal_set_message(t('The trimmed version of your post shows what your post looks like when promoted to the main page or when exported for syndication.<span class="no-js"> You can insert the delimiter "&lt;!--break--&gt;" (without the quotes) to fine-tune where your post gets split.</span>'));
     $output .= '<h3>'. t('Preview trimmed version') .'</h3>';