Fix browser titles (#2672)

wp-content/themes/pub/wporg-learn-2024/functions.php

@@ -17,6 +17,7 @@
 require_once __DIR__ . '/inc/block-config.php';
 require_once __DIR__ . '/inc/block-hooks.php';
 require_once __DIR__ . '/inc/query.php';
+require_once __DIR__ . '/inc/head.php';
 
 /**
  * Actions and filters.

wp-content/themes/pub/wporg-learn-2024/inc/head.php

@@ -0,0 +1,59 @@
+<?php
+/**
+ * HTML head markup and customizations.
+ */
+
+namespace WordPressdotorg\Theme\Learn_2024\Head;
+
+add_action( 'init', __NAMESPACE__ . '\init' );
+
+/**
+ * Handles adding/removing hooks as needed.
+ */
+function init() {
+	add_filter( 'document_title_parts', __NAMESPACE__ . '\document_title' );
+	add_filter( 'document_title_separator', __NAMESPACE__ . '\document_title_separator' );
+}
+
+/**
+ * Filters document title to add context based on what is being viewed.
+ *
+ * @param array $parts The document title parts.
+ * @return array The document title parts.
+ */
+function document_title( $parts ) {
+	global $wp_query;
+
+	$parts['site']  = __( 'Learn.WordPress.org', 'wporg-learn' );
+	$post_type      = get_query_var( 'post_type' );
+	$sep            = '–';
+
+	if ( is_singular() ) {
+		// Add post type to title if it's a parsed item.
+		if ( get_post_type_object( $post_type ) ) {
+			$parts['title'] .= " $sep " . get_post_type_object( $post_type )->labels->singular_name;
+		}
+	}
+
+	// If results are paged and the max number of pages is known.
+	if ( is_paged() && $wp_query->max_num_pages ) {
+		$parts['page'] = sprintf(
+			// translators: 1: current page number, 2: total number of pages
+			__( 'Page %1$s of %2$s', 'wporg-learn' ),
+			get_query_var( 'paged' ),
+			$wp_query->max_num_pages
+		);
+	}
+
+	return $parts;
+}
+
+/**
+ * Customizes the document title separator.
+ *
+ * @param string $separator Current document title separator.
+ * @return string
+ */
+function document_title_separator( $separator ) {
+	return '|';
+}