Leave escaping up to Journey

actionpack/lib/action_dispatch/routing/route_set.rb

@@ -394,10 +394,9 @@ class Generator #:nodoc:
           if name == :controller
             value
           elsif value.is_a?(Array)
-            value.map { |v| Journey::Router::Utils.escape_uri(v.to_param) }.join('/')
-          else
-            return nil unless param = value.to_param
-            param.split('/').map { |v| Journey::Router::Utils.escape_uri(v) }.join("/")
+            value.map { |v| v.to_param }.join('/')
+          elsif param = value.to_param
+            param
           end
         end