wp_save_revisioned_meta_fields()

wp_save_revisioned_meta_fields( int $revision_id, int $post_id )

function wp_save_revisioned_meta_fields( $revision_id, $post_id ) {
	$post_type = get_post_type( $post_id );
	if ( ! $post_type ) {
		return;
	}

	foreach ( wp_post_revision_meta_keys( $post_type ) as $meta_key ) {
		if ( metadata_exists( 'post', $post_id, $meta_key ) ) {
			_wp_copy_post_meta( $post_id, $revision_id, $meta_key );
		}
	}
}