What are the chars that the url can include?

[eluser]CroNiX[/eluser]
1. No, he means the route with 4 segments needs to come before the route with 3 segments.

Code:

$route['news/search/(:any)/(:num)'] = 'news_ci/sorting/search/$1/$2';
$route['news/search/(:any)']        = 'news_ci/sorting/search/$1/1';