wp_force_plain_post_permalink( WP_Post|int|null $post = null, bool|null $sample = null ): bool

103function wp_force_plain_post_permalink( $post = null, $sample = null ) {104	if (105		null === $sample &&106		is_object( $post ) &&107		isset( $post->filter ) &&108		'sample' === $post->filter109	) {110		$sample = true;111	} else {112		$post   = get_post( $post );113		$sample = null !== $sample ? $sample : false;114	}115 116	if ( ! $post ) {117		return true;118	}119 120	$post_status_obj = get_post_status_object( get_post_status( $post ) );121	$post_type_obj   = get_post_type_object( get_post_type( $post ) );122 123	if ( ! $post_status_obj || ! $post_type_obj ) {124		return true;125	}126 127	if (128		// Publicly viewable links never have plain permalinks.129		is_post_status_viewable( $post_status_obj ) ||130		(131			// Private posts don't have plain permalinks if the user can read them.132			$post_status_obj->private &&133			current_user_can( 'read_post', $post->ID )134		) ||135		// Protected posts don't have plain links if getting a sample URL.136		( $post_status_obj->protected && $sample )137	) {138		return false;139	}140 141	return true;142}