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wp-content/plugins/jetpack/modules/theme-tools/compat/twentytwentyone.php

@@ -0,0 +1,56 @@
+<?php
+/**
+ * Jetpack Compatibility File
+ * See: https://jetpack.com/
+ *
+ * @package automattic/jetpack
+ */
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit( 0 );
+}
+
+/**
+ * Add Jetpack extra functionality to Twenty Twenty One.
+ */
+function twentytwentyone_jetpack_setup() {
+
+	/**
+	 * Add theme support for Infinite Scroll.
+	 */
+	add_theme_support(
+		'infinite-scroll',
+		array(
+			'type'      => 'click',
+			'container' => 'main',
+			'render'    => 'twentytwentyone_infinite_scroll_render',
+			'footer'    => 'main',
+		)
+	);
+}
+add_action( 'after_setup_theme', 'twentytwentyone_jetpack_setup' );
+
+/**
+ * Custom render function for Infinite Scroll.
+ */
+function twentytwentyone_infinite_scroll_render() {
+	while ( have_posts() ) {
+		the_post();
+		get_template_part( 'template-parts/content/content', get_theme_mod( 'display_excerpt_or_full_post', 'excerpt' ) );
+	}
+}
+
+/**
+ * Add our compat CSS file for custom styles.
+ * Set the version equal to filemtime for development builds, and the JETPACK__VERSION for production
+ * or skip it entirely for wpcom.
+ */
+function twentytwentyone_enqueue_jetpack_style() {
+	$version = Jetpack::is_development_version()
+	? filemtime( JETPACK__PLUGIN_DIR . 'modules/theme-tools/compat/twentytwentyone.css' )
+	: JETPACK__VERSION;
+
+	wp_enqueue_style( 'twentytwentyone-jetpack', plugins_url( 'twentytwentyone.css', __FILE__ ), array(), $version );
+	wp_style_add_data( 'twentytwentyone-jetpack', 'rtl', 'replace' );
+}
+add_action( 'wp_enqueue_scripts', 'twentytwentyone_enqueue_jetpack_style' );