wrong url construction with edge rails under certain conditions

Hi!
I've noticed the new behavior that was not seen in stable Rails.
Using edge Rails (from today) I have the following problem.

Example situation:
    * user is executing GET request to /sprint/show/205
    * there's a route:
map.connect 'sprint/show/:sprint', :controller => 'task', :action => 'index'
    * in task/index.rhtml template we have:
<%= link_to "Break Me", :action => 'foo', :params => { :sprint => 1 } %>

Problem:
    * on generated page the link is: <a href="/task/foo">Break Me</a> without
the sprint parameter

Why?
    * url_for is used to build the URL
    * url_for calls the URL rewriter (UrlRewriter::rewrite_path) to get the
URL path string
    * rewriter asks the request about path parameters and in our case it gets
{:controller => 'task', :action => 'index', :sprint => 205 }
    * rewriter asks the route to generate the url by passing path parameters
as "recall" argument to Route::generate(options, recall, method)
    * generate method "recalls" those from the path, including "sprint" which
is wrong in this case!

The conclusion is that in edge Rails parameters to the url_for can not have
the same name as symbols in the route.
I'm not sure at this point if that's a bug or "feature" of new Rails. I can
easily fix the situation just by using :params => {:sprint_id => 1} so
maybe this issue is an another thing that should be in the upgrade guide...

Alexander,

Don't put things in :params => {}. Just do :sprint => 1 directly.

In other words:

   link_to "...", :action => "foo", :sprint => 1

- Jamis

Well, that doesn't quite work. I still have the url without the sprint
parameter. I guess that's because :sprint is still passed in the recall
option of Route::generate(options, recall, method)

Thanks!