fixed a bug with _protect_identifiers() and db/swap prefixes. It was appending the prefix, but not accounting for the need to swap
diff --git a/user_guide/changelog.html b/user_guide/changelog.html
index b3ac167..323467b 100644
--- a/user_guide/changelog.html
+++ b/user_guide/changelog.html
@@ -101,6 +101,7 @@
<li>Fixed a bug in the XML-RPC class with parsing dateTime.iso8601 data types.</li>
<li>Fixed a case sensitive string replacement in xss_clean()</li>
<li>Fixed a bug in form_prep() causing it to not preserve entities in the user's original input when called back into a form element</li>
+ <li>Fixed a bug in _protect_identifiers() where the swap prefix ($swap_pre) was not being observed.</li>
</ul>
<h2>Version 1.7.1</h2>