class.php

add_action( 'init', 'short_aliases' );
add_filter( 'short_aliases', 'shorts_redirect' ) );

function short_aliases() {
	$aliases = apply_filters( 'short_aliases', array() );
	if ( ! is_array( $aliases ) ) {
		$aliases = array();
	}
	foreach ( $aliases as $alias => $redirects ) {
		add_rewrite_rule( "^$alias/?", $redirects, 'top' );
	}
}

function shots_redirect( $redirects ) {
	$short = get_query_var( 'short' );
	$redirects['slug'] = get_post_type_archive_link( 'page' );
	return $redirects;
}