old_slug_redirect_url filter-hook . WP 4.4.0

Filters the old slug redirect URL.

Usage

add_filter( 'old_slug_redirect_url', 'filter_function_name_9865' );
function filter_function_name_9865( $link ){
	// filter...

	return $link;
}

$link(string)

The redirect URL.

Where the hook is called

$link = apply_filters( 'old_slug_redirect_url', $link );

Where the hook is used (in WP core)