backed out 648b42a75739, which was a NON-trivial whitespace commit.  It broke the Typography class's string replacements, for instance
diff --git a/user_guide/database/fields.html b/user_guide/database/fields.html
index b204361..04d8b80 100644
--- a/user_guide/database/fields.html
+++ b/user_guide/database/fields.html
@@ -92,7 +92,7 @@
 <h2>$this->db->field_exists()</h2>
 
 <p>Sometimes it's helpful to know whether a particular field exists before performing an action.
-Returns a boolean TRUE/FALSE. Usage example:</p>
+Returns a boolean TRUE/FALSE.  Usage example:</p>
 
 <code>
 if ($this->db->field_exists('field_name', 'table_name'))<br />
@@ -101,7 +101,7 @@
 }
 </code>
 
-<p>Note: Replace <em>field_name</em> with the name of the column you are looking for, and replace
+<p>Note:  Replace <em>field_name</em> with the name of the column you are looking for, and replace
 <em>table_name</em> with the name of the table you are looking for.</p>