rake routes with multiple paramaters
bug_info  /bugs/:pr/:scope/info(.:format)       {:controller=>"bugs", :action=>"info"}

match 'bugs/:pr/:scope/info' => 'bugs#info', :as=>:bug_info

Railstest::Application.routes.draw do
  match 'test' => 'bugs#test', :as=>:bug_test
  match 'bugs/:pr/:scope/info' => 'bugs#info', :as=>:bug_info
end

class BugsController < ApplicationController
  def test
  end

  def info
  end
end

<%= bug_info_path(:pr=>1,:scope=>2) %>

<%= params %>