first commit

wp-content/plugins/polylang/integrations/twenty-seventeen/load.php

@@ -0,0 +1,12 @@
+<?php
+/**
+ * Loads the integration with WordPress MU Domain Mapping.
+ *
+ * @package Polylang
+ */
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit; // Don't access directly.
+};
+
+add_action( 'init', array( PLL_Integrations::instance()->twenty_seventeen = new PLL_Twenty_Seventeen(), 'init' ) );

wp-content/plugins/polylang/integrations/twenty-seventeen/twenty-seven-teen.php

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+<?php
+/**
+ * @package Polylang
+ */
+
+/**
+ * Manages the compatibility with Twenty_Seventeen.
+ *
+ * @since 2.8
+ */
+class PLL_Twenty_Seventeen {
+	/**
+	 * Translates the front page panels and the header video.
+	 *
+	 * @since 2.0.10
+	 */
+	public function init() {
+		if ( 'twentyseventeen' === get_template() && did_action( 'pll_init' ) ) {
+			if ( function_exists( 'twentyseventeen_panel_count' ) && PLL() instanceof PLL_Frontend ) {
+				$num_sections = twentyseventeen_panel_count();
+				for ( $i = 1; $i < ( 1 + $num_sections ); $i++ ) {
+					add_filter( 'theme_mod_panel_' . $i, 'pll_get_post' );
+				}
+			}
+
+			$theme_slug = get_option( 'stylesheet' ); // In case we are using a child theme.
+			new PLL_Translate_Option( "theme_mods_$theme_slug", array( 'external_header_video' => 1 ), array( 'context' => 'Twenty Seventeen' ) );
+		}
+	}
+}