Ticket #6428: 6428.diff

wp-admin/includes/media.php

@@ -511 +511 @@
                 else
                         $size = 'medium';
 
-                return get_image_send_to_editor($attachment_id, $attachment['post_excerpt'], $attachment['post_title'], $align, $url, true, $size);
+                $rel = ( $url == get_attachment_link($attachment_id) );
+
+                return get_image_send_to_editor($attachment_id, $attachment['post_excerpt'], $attachment['post_title'], $align, $url, $rel, $size);
         }
 
         return $html;