A tiny little article plugin to demo Extended CPTs ... with translatable labels.

pixie-article.php

<?php

/**
 * @link              https://deliciousbrains.com/blog/
 * @since             1.0
 * @package           Pixie_Article
 *
 * @wordpress-plugin
 * Plugin Name:       Pixie Article
 * Plugin URI:        https://deliciousbrains.com/blog/
 * Description:       A tiny little article plugin to demo Extended CPTs.
 * Version:           1.0
 * Author:            ianmjones
 * Author URI:        https://profiles.wordpress.org/ianmjones
 * License:           GPL-2.0+
 * License URI:       http://www.gnu.org/licenses/gpl-2.0.txt
 * Text Domain:       pixie-article
 * Domain Path:       /languages
 * Network:           False
 */

// If this file is called directly, abort.
if ( ! defined( 'WPINC' ) ) {
	die;
}

function pixie_article_loaded() {
	require_once( 'extended-cpts/extended-cpts.php' );

	load_plugin_textdomain(
		'pixie-article',
		false,
		dirname( plugin_basename( __FILE__ ) ) . '/languages/'
	);

	$labels = array(
		'name'               => __( 'Pixie Articles', 'pixie-article' ),
		'singular_name'      => __( 'Pixie Article', 'pixie-article' ),
		'menu_name'          => __( 'Pixie Articles', 'pixie-article' ),
		'add_new'            => _x( 'Add New', 'Pixie Article', 'pixie-article' ),
		'add_new_item'       => __( 'Add New Pixie Article', 'pixie-article' ),
		'edit_item'          => __( 'Edit Pixie Article', 'pixie-article' ),
		'new_item'           => __( 'New Pixie Article', 'pixie-article' ),
		'view_item'          => __( 'View Pixie Article', 'pixie-article' ),
		'search_items'       => __( 'Search Pixie Articles', 'pixie-article' ),
		'not_found'          => __( 'No pixie articles found', 'pixie-article' ),
		'not_found_in_trash' => __( 'No pixie articles found in Trash', 'pixie-article' ),
		'parent_item_colon'  => __( 'Parent Pixie Article:', 'pixie-article' ),
		'all_items'          => __( 'All Pixie Articles', 'pixie-article' ),
	);
	register_extended_post_type( 'pixie-article', array( 'labels' => $labels ) );
}

add_action( 'plugins_loaded', 'pixie_article_loaded' );