Add new i18n fonts and rename them via filter

projects/plugins/jetpack/changelog/update-fonts-i18n-filter

@@ -0,0 +1,4 @@
+Significance: minor
+Type: enhancement
+
+Add new fonts for better i18n

projects/plugins/jetpack/modules/google-fonts.php

@@ -16,7 +16,7 @@
 
 /**
  * Curated list of Google Fonts
- * See https://wp.me/p9Jlb4-22P
+ * See p9Jlb4-22P, p9Jlb4-44k-p2 and p9Jlb4-5Dj-p2
  */
 const JETPACK_GOOGLE_FONTS_LIST = array(
 	'Albert Sans',
@@ -67,6 +67,23 @@
 	'Space Mono',
 	'Texturina',
 	'Work Sans',
+
+	// Keep i18n fonts at the end of the fonts list. These are provided different names at `jetpack_rename_google_font_names()` function.
+	'Alexandria',
+	'IBM Plex Sans Arabic',
+	'Noto Sans Hebrew',
+	'Noto Sans HK',
+	'Noto Sans JP',
+	'Noto Sans KR',
+	'Noto Sans SC',
+	'Noto Sans TC',
+	'Noto Sans Telugu',
+	'Noto Serif Hebrew',
+	'Noto Serif HK',
+	'Noto Serif JP',
+	'Noto Serif KR',
+	'Noto Serif SC',
+	'Noto Serif TC',
 );
 
 /**
@@ -115,6 +132,90 @@ function jetpack_add_google_fonts_provider() {
 }
 add_action( 'after_setup_theme', 'jetpack_add_google_fonts_provider' );
 
+/**
+ * Updates font names by filtering the data provided by the theme for global styles & settings.
+ *
+ * `wp_register_webfonts()` does not currently support giving a separate "name"
+ * from "font-family", even if theme.json schema itself does support it.
+ * See: https://github.com/WordPress/gutenberg/issues/46398
+ *
+ * Once support for "name" is added, below functionality can be refactored
+ * to provide the name directly within `wp_register_webfonts()`.
+ *
+ * @param WP_Theme_JSON_Data_Gutenberg $theme_json Class to access and update the underlying data.
+ * @return WP_Theme_JSON_Data_Gutenberg Class with updated Global Styles settings.
+ */
+function jetpack_rename_google_font_names( $theme_json ) {
+
+	// Rename only in the editor and API requests
+	if ( is_admin() || ( defined( 'REST_REQUEST' ) && REST_REQUEST ) ) {
+		$raw_data = $theme_json->get_data();
+
+		// Skip if fontFamilies are not defined in the variation.
+		if ( empty( $raw_data['settings']['typography']['fontFamilies']['theme'] ) ) {
+			return $theme_json;
+		}
+
+		$font_families = $raw_data['settings']['typography']['fontFamilies']['theme'];
+
+		$renamed_fonts = array(
+			/* translators: %s is a font name, followed by character set/script name. */
+			'Alexandria'           => sprintf( __( '%s (Arabic)', 'jetpack' ), 'Alexandria' ),
+			/* translators: %s is a font name, followed by character set/script name. */
+			'IBM Plex Sans Arabic' => sprintf( __( '%s (Arabic)', 'jetpack' ), 'IBM Plex Sans' ),
+			/* translators: %s is a font name, followed by character set/script name. */
+			'Noto Sans Hebrew'     => sprintf( __( '%s (Hebrew)', 'jetpack' ), 'Noto Sans' ),
+			/* translators: %s is a font name, followed by character set/script name. */
+			'Noto Sans HK'         => sprintf( __( '%s (Hong Kong)', 'jetpack' ), 'Noto Sans' ),
+			/* translators: %s is a font name, followed by character set/script name. */
+			'Noto Sans JP'         => sprintf( __( '%s (Japanese)', 'jetpack' ), 'Noto Sans' ),
+			/* translators: %s is a font name, followed by character set/script name. */
+			'Noto Sans KR'         => sprintf( __( '%s (Korean)', 'jetpack' ), 'Noto Sans' ),
+			/* translators: %s is a font name, followed by character set/script name. */
+			'Noto Sans SC'         => sprintf( __( '%s (Simplified Chinese)', 'jetpack' ), 'Noto Sans' ),
+			/* translators: %s is a font name, followed by character set/script name. */
+			'Noto Sans TC'         => sprintf( __( '%s (Traditional Chinese)', 'jetpack' ), 'Noto Sans' ),
+			/* translators: %s is a font name, followed by character set/script name. */
+			'Noto Sans Telugu'     => sprintf( __( '%s (Telugu)', 'jetpack' ), 'Noto Sans' ),
+			/* translators: %s is a font name, followed by character set/script name. */
+			'Noto Serif Hebrew'    => sprintf( __( '%s (Hebrew)', 'jetpack' ), 'Noto Serif' ),
+			/* translators: %s is a font name, followed by character set/script name. */
+			'Noto Serif HK'        => sprintf( __( '%s (Hong Kong)', 'jetpack' ), 'Noto Serif' ),
+			/* translators: %s is a font name, followed by character set/script name. */
+			'Noto Serif JP'        => sprintf( __( '%s (Japanese)', 'jetpack' ), 'Noto Serif' ),
+			/* translators: %s is a font name, followed by character set/script name. */
+			'Noto Serif KR'        => sprintf( __( '%s (Korean)', 'jetpack' ), 'Noto Serif' ),
+			/* translators: %s is a font name, followed by character set/script name. */
+			'Noto Serif SC'        => sprintf( __( '%s (Simplified Chinese)', 'jetpack' ), 'Noto Serif' ),
+			/* translators: %s is a font name, followed by character set/script name. */
+			'Noto Serif TC'        => sprintf( __( '%s (Traditional Chinese)', 'jetpack' ), 'Noto Serif' ),
+		);
+
+		foreach ( $font_families as $key => $font_family ) {
+			$font_name = $font_family['name'];
+
+			if ( array_key_exists( $font_name, $renamed_fonts ) ) {
+				$font_families[ $key ]['name'] = $renamed_fonts[ $font_name ];
+			}
+		}
+
+		// See https://developer.wordpress.org/block-editor/reference-guides/theme-json-reference/theme-json-living/#typography
+		$updated_fonts = array(
+			'version'  => 2,
+			'settings' => array(
+				'typography' => array(
+					'fontFamilies' => $font_families,
+				),
+			),
+		);
+
+		return $theme_json->update_with( $updated_fonts );
+	}
+
+	return $theme_json;
+}
+add_filter( 'wp_theme_json_data_theme', 'jetpack_rename_google_font_names' );
+
 add_filter( 'wp_resource_hints', '\Automattic\Jetpack\Fonts\Utils::font_source_resource_hint', 10, 2 );
 add_filter( 'pre_render_block', '\Automattic\Jetpack\Fonts\Introspectors\Blocks::enqueue_block_fonts', 10, 2 );
 // The priority for the next hook is is set to 22 because it needs to run after Gutenberg's