gistfile1.diff

diff --git a/src/app/js/router.js b/src/app/js/router.js
index 621f627..7a6f955 100644
--- a/src/app/js/router.js
+++ b/src/app/js/router.js
@@ -993,11 +993,12 @@ Y.Router = Y.extend(Router, Y.Base, {
     **/
     _getRequest: function (src) {
         return {
-            path  : this._getPath(),
-            query : this._parseQuery(this._getQuery()),
-            url   : this._getURL(),
-            router: this,
-            src   : src
+            router  : this,
+            path    : this._getPath(),
+            query   : this._parseQuery(this._getQuery()),
+            url     : this._getURL(),
+            referrer: Y.Router._referrer,
+            src     : src
         };
     },
 
@@ -1448,7 +1449,10 @@ Y.Router = Y.extend(Router, Y.Base, {
             currentURL = self._getURL(),
             req, res;
 
-        self._url = currentURL;
+        // Update the shared `referrer` to the old URL (origin + path + query),
+        // and store the current URL.
+        Y.Router._referrer = prevURL.replace(this._regexURL, '$1$2$3');
+        self._url          = currentURL;
 
         // Handles the awkwardness that is the `popstate` event. HTML5 browsers
         // fire `popstate` right before they fire `hashchange`, and Chrome fires
@@ -1582,6 +1586,10 @@ Y.Router = Y.extend(Router, Y.Base, {
     // To make this testable.
     _instances: instances,
 
+    // Used to store the referrer URL for all router instances in the current
+    // YUI instnace and document.
+    _referrer: Y.config.doc.referrer,
+
     /**
     Dispatches to the first route handler that matches the specified `path` for
     all active router instances.