routes bug ?

[eluser]EugeneS[/eluser]
in routes.php i have:

Code:

$route['contacts'] = 'welcome/index/2';

then i go to the url like:
http://localhost/contacts

yes i'm in the class "welcome" method "index" but when i'm trying to access url segments it doesnt work:

Code:

echo $page_id = $this->uri->segment(1, 1);
result: contacts

echo $page_id = $this->uri->segment(2, 1);
result: 1

echo $page_id = $this->uri->segment(3, 1);
result: 1

i was thinking it should be

Code:

echo $page_id = $this->uri->segment(1, 1);
result: welcome

echo $page_id = $this->uri->segment(2, 1);
result: index

echo $page_id = $this->uri->segment(3, 1);
result: 2

my expectations are wrong or its bug ?