backed out 648b42a75739, which was a NON-trivial whitespace commit.  It broke the Typography class's string replacements, for instance
diff --git a/system/helpers/cookie_helper.php b/system/helpers/cookie_helper.php
index 31d2d31..7cee028 100644
--- a/system/helpers/cookie_helper.php
+++ b/system/helpers/cookie_helper.php
@@ -1,4 +1,4 @@
-<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
 /**
  * CodeIgniter
  *
@@ -37,7 +37,7 @@
  * @param	mixed
  * @param	string	the value of the cookie
  * @param	string	the number of seconds until expiration
- * @param	string	the cookie domain. Usually: .yourdomain.com
+ * @param	string	the cookie domain.  Usually:  .yourdomain.com
  * @param	string	the cookie path
  * @param	string	the cookie prefix
  * @return	void
@@ -85,7 +85,7 @@
  * Delete a COOKIE
  *
  * @param	mixed
- * @param	string	the cookie domain. Usually: .yourdomain.com
+ * @param	string	the cookie domain.  Usually:  .yourdomain.com
  * @param	string	the cookie path
  * @param	string	the cookie prefix
  * @return	void