/**
*  The following roles and capabilities code has been removed because it does not work. If you can help with this, please do.
*/

global $wp_roles;

if ( ! isset($wp_roles) )
    $wp_roles = new WP_Roles();

if ( ! get_role('wiki_editor')){
    $role_capabilities = array('read'=>true
    ,'edit_posts'=>true
    ,'edit_others_posts'=>true
    ,'edit_published_posts'=>true
//  ,'delete_posts'=>true
//  ,'delete_published_posts'=>true
//  ,'publish_posts'=>true
//  ,'publish_pages'=>true
//  ,'delete_pages'=>true
//  ,'edit_pages'=>true
//  ,'edit_others_pages'=>true
//  ,'edit_published_pages'=>true
//  ,'delete_published_pages'=>true
    ,'edit_wiki'=>true);
    $wp_roles->add_role('wiki_editor', 'Wiki Editor',$role_capabilities);
}


$role = get_role('wiki_editor');
$role->add_cap('edit_wiki');
$role->add_cap('edit_pages');
$role->add_cap('edit_post');
$role->add_cap('edit_others_posts');
$role->add_cap('edit_published_posts');