Routing map.namespace function definition bug

(better formated copy of the post)

file actionpack-2.3.4/lib/action_controller/routing/route_set.rb

 47 def namespace(name, options = {}, &block)
 48           if options[:namespace]
 49             with_options({:path_prefix => "#{options.delete(:path_prefix)}/#{name}", :name_prefix => "#{options.delete(:name_prefix)}#{name}", :namespace => "#{options.delete(:namespace    )}#{name}/" }.merge(options), &block)
 50           else
 51             with_options({:path_prefix => name, :name_prefix => "#{name}", :namespace => "#{name}/" }.merge(options), &block)
 52           end
 53         end

does line 49 in this file not suppose to be

49             with_options({:path_prefix => "#{options.delete(:path_prefix)}/#{name}", :name_prefix => "#{options.delete(:name_prefix)}#{name}_", :namespace => "#{options.delete(:namespace    )}/" }.merge(options), &block)

with #{name} deleted ?

because this route is causing problems when used with this route:

  map.namespace :panel, :namespace => 'admin_panel' do |admin_panel|

admin_panel.root  :controller => 'panel'
admin_panel.connect ':controller/:action/:id'

  end

error:

uninitialized constant AdminPanelpanel

/usr/local/lib/ruby1.9/gems/1.9.1/gems/activesupport-2.3.4/lib/active_support/dependencies.rb:443:in `load_missing_constant'
/usr/local/lib/ruby1.9/gems/1.9.1/gems/activesupport-2.3.4/lib/active_support/dependencies.rb:80:in `const_missing_with_dependencies'
/usr/local/lib/ruby1.9/gems/1.9.1/gems/activesupport-2.3.4/lib/active_support/dependencies.rb:92:in `const_missing'
/usr/local/lib/ruby1.9/gems/1.9.1/gems/activesupport-2.3.4/lib/active_support/inflector.rb:372:in `const_get'
/usr/local/lib/ruby1.9/gems/1.9.1/gems/activesupport-2.3.4/lib/active_support/inflector.rb:372:in `block in constantize'
/usr/local/lib/ruby1.9/gems/1.9.1/gems/activesupport-2.3.4/lib/active_support/inflector.rb:371:in `each'
/usr/local/lib/ruby1.9/gems/1.9.1/gems/activesupport-2.3.4/lib/active_support/inflector.rb:371:in `constantize'
/usr/local/lib/ruby1.9/gems/1.9.1/gems/activesupport-2.3.4/lib/active_support/core_ext/string/inflections.rb:162:in `constantize'
/usr/local/lib/ruby1.9/gems/1.9.1/gems/actionpack-2.3.4/lib/action_controller/routing/route_set.rb:443:in `recognize'
/usr/local/lib/ruby1.9/gems/1.9.1/gems/actionpack-2.3.4/lib/action_controller/routing/route_set.rb:436:in `call'

the route used:

mydomain.com/panel/