
<?php

add_action( 'generate_rewrite_rules', 'taxonomy_rewrite' );

function taxonomy_rewrite( $wp_rewrite ) {
	$slug = 'yeah/this/is/what/i/want';
	if ( preg_match( '/\//', $slug ) ) {
		$new_rules = array(
			"$slug/(.+)" => 'index.php?paste_tag=' .
			 $wp_rewrite->preg_index( 1 )
		);
		$wp_rewrite->rules = $new_rules + $wp_rewrite->rules;
	}
}
?>