_Trailing_ and $this->keys also do not need to be urldecoded. Both _t…

…railing_ and $this->keys gets set in _writeRoute, which also makes the regex that used to create the array $route.

Any keys in $route that match [_trailing_] or any values in $this->keys are put there through the exection of preg_match. The URL is decoded before being passed to preg_match, which means the values
inside of [_trailing_]etc. have already been decoded.

lib/Cake/Routing/Route/CakeRoute.php

@@ -235,7 +235,7 @@ public function parse($url) {
 
 		foreach ($this->keys as $key) {
 			if (isset($route[$key])) {
-				$route[$key] = rawurldecode($route[$key]);
+				$route[$key] = $route[$key];
 			}
 		}
 
@@ -247,7 +247,7 @@ public function parse($url) {
 		}
 
 		if (isset($route['_trailing_'])) {
-			$route['pass'][] = rawurldecode($route['_trailing_']);
+			$route['pass'][] = $route['_trailing_'];
 			unset($route['_trailing_']);
 		}