Search results – or not

This also affects earlier versions. If I try and search a wordpress Blog, but forget to enter any terms I end up… on the home page. Surely on a Search, even if blank, I should be redirected to the search results page?

I’ve just sent someone this code (not sure if it’s fully correct) as a suggested interim fix:

function blank_search($query){
	global $wp_query;
	if (isset($_GET['s']) && $_GET['s']==''){
		$wp_query->set('s',' ');
		$wp_query->is_search=true;
	}
	return $query;
}
add_action('pre_get_posts','blank_search');

Is this even possible to correct for a future release?