unescape path so that we can more easily work with scandinavian lette…

…rs on filters

lib/routing_filter.rb

@@ -51,7 +51,7 @@ def filters
   end
 
   def recognize_path_with_filtering(path, env)
-    path = path.dup # string is frozen due to memoize
+    path = ::URI.unescape(path.dup) # string is frozen due to memoize
     filters.run :around_recognize, path, env, &lambda{ recognize_path_without_filtering(path, env) }
   end
   alias_method_chain :recognize_path, :filtering

spec/recognition_spec.rb

@@ -68,4 +68,9 @@
   it 'recognizes the path /en-US/sections/1/articles/1 and sets a :locale param' do
     should_recognize_path '/en-US/sections/1/articles/1', @article_params.update(:locale => 'en-US')
   end
+
+  it 'unescapes the path for the filters' do
+    @set.should_receive(:recognize_path_without_filtering).with('/sections/motörhead', 'test')
+    @set.recognize_path('/sections/mot%C3%B6rhead', 'test')
+  end
 end