first commit

wp-content/plugins/polylang-pro/vendor/wpsyntex/polylang/integrations/duplicate-post/duplicate-post.php

@@ -0,0 +1,37 @@
+<?php
+/**
+ * @package Polylang
+ */
+
+/**
+ * Manages the compatibility with Duplicate Post.
+ *
+ * @since 2.8
+ */
+class PLL_Duplicate_Post {
+	/**
+	 * Setups actions.
+	 *
+	 * @since 2.8
+	 */
+	public function init() {
+		add_filter( 'option_duplicate_post_taxonomies_blacklist', array( $this, 'taxonomies_blacklist' ) );
+	}
+
+	/**
+	 * Avoid duplicating the 'post_translations' taxonomy.
+	 *
+	 * @since 1.8
+	 *
+	 * @param array|string $taxonomies The list of taxonomies not to duplicate.
+	 * @return array
+	 */
+	public function taxonomies_blacklist( $taxonomies ) {
+		if ( empty( $taxonomies ) ) {
+			$taxonomies = array(); // As we get an empty string when there is no taxonomy.
+		}
+
+		$taxonomies[] = 'post_translations';
+		return $taxonomies;
+	}
+}

wp-content/plugins/polylang-pro/vendor/wpsyntex/polylang/integrations/duplicate-post/load.php

@@ -0,0 +1,21 @@
+<?php
+/**
+ * Loads the integration with Duplicate Post.
+ *
+ * @package Polylang
+ */
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit; // Don't access directly.
+}
+
+add_action(
+	'plugins_loaded',
+	function () {
+		if ( defined( 'DUPLICATE_POST_CURRENT_VERSION' ) ) {
+			PLL_Integrations::instance()->duplicate_post = new PLL_Duplicate_Post();
+			PLL_Integrations::instance()->duplicate_post->init();
+		}
+	},
+	0
+);