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/file_helper.php b/system/helpers/file_helper.php
index 2bd8bce..3931667 100644
--- a/system/helpers/file_helper.php
+++ b/system/helpers/file_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
*
@@ -311,7 +311,7 @@
$fileinfo['readable'] = is_readable($file);
break;
case 'writable':
- // There are known problems using is_weritable on IIS. It may not be reliable - consider fileperms()
+ // There are known problems using is_weritable on IIS. It may not be reliable - consider fileperms()
$fileinfo['writable'] = is_writable($file);
break;
case 'executable':