Ticket #43697: 43697.4.diff

src/wp-admin/menu.php

@@ -185 +185 @@
 
 $appearance_cap = current_user_can( 'switch_themes' ) ? 'switch_themes' : 'edit_theme_options';
 
-$menu[60]                     = array( __( 'Appearance' ), $appearance_cap, 'themes.php', '', 'menu-top menu-icon-appearance', 'menu-appearance', 'dashicons-admin-appearance' );
+$theme_update_count = '';
+if ( ! is_multisite() && current_user_can( 'update_themes' ) ) {
+        if ( ! isset( $update_data ) ) {
+                $update_data = wp_get_update_data();
+        }
+        $theme_update_count = sprintf(
+                '<span class="update-plugins count-%s"><span class="theme-count">%s</span></span>',
+                $update_data['counts']['themes'],
+                number_format_i18n( $update_data['counts']['themes'] )
+        );
+}
+
+/* translators: %s: Number of pending theme updates. */
+$menu[60] = array( sprintf( __( 'Appearance %s' ), $theme_update_count ), $appearance_cap, 'themes.php', '', 'menu-top menu-icon-appearance', 'menu-appearance', 'dashicons-admin-appearance' );
+
         $submenu['themes.php'][5] = array( __( 'Themes' ), $appearance_cap, 'themes.php' );
 
         $customize_url            = add_query_arg( 'return', urlencode( remove_query_arg( wp_removable_query_args(), wp_unslash( $_SERVER['REQUEST_URI'] ) ) ), 'customize.php' );