Better self links for feeds. Fixes #5238 props andy.

git-svn-id: https://develop.svn.wordpress.org/trunk@7244 602fd350-edb4-49c9-b593-d223f7449a82

wp-includes/feed.php

@@ -231,4 +231,21 @@ function prep_atom_text_construct($data) {
 	}
 }
 
+/**
+ * self_link() - Generate a correct link for the atom:self elemet
+ *
+ * Echo the link for the currently displayed feed in a XSS safe way.
+ *
+ * @package WordPress
+ * @subpackage Feed
+ * @since 2.5
+ *
+ */
+function self_link() {
+	echo 'http'
+		. ( $_SERVER['https'] == 'on' ? 's' : '' ) . '://'
+		. $_SERVER['HTTP_HOST']
+		. wp_specialchars(stripslashes($_SERVER['REQUEST_URI']), 1);
+}
+
 ?>