Is there a way to use regular categories with custom post types?

Question

Is there a way to use regular categories with custom post types? It seems like there is better functionality and options with regular categories (such as permalink options, etc.).

Answer 1

No problem, the categories and tags are also registered as taxonomies that you can pass to the taxonomies argument when you call register_post_type(). Categories are category and tags are post_tag. You can also do this later with register_taxonomy_for_object_type():

add_action( 'init', 'wpse6098_init', 100 ); // 100 so the post type has been registered
function wpse6098_init()
{
    register_taxonomy_for_object_type( 'category', 'your_custom_post_type' );
}