Ticket #32710: 32710.3.diff

src/wp-admin/js/customize-nav-menus.js

@@ -261 +261 @@
                         self.currentRequest.fail(function( data ) {
                                 // data.message may be undefined, for example when typing slow and the request is aborted.
                                 if ( data.message ) {
-                                        $content.empty().append( $( '<p class="nothing-found"></p>' ).text( data.message ) );
+                                        $content.empty().append( $( '<div class="nothing-found"></p>' ).html( data.message ) );
                                         wp.a11y.speak( data.message );
                                 }
                                 self.pages.search = -1;

src/wp-includes/class-wp-customize-nav-menus.php

@@ -205 +205 @@
                 $items = $this->search_available_items_query( array( 'pagenum' => $p, 's' => $s ) );
 
                 if ( empty( $items ) ) {
-                        wp_send_json_error( array( 'message' => __( 'No menu items found.' ) ) );
+                        wp_send_json_error( array( 'message' => '<p>' . __( 'No results found.' ) . '</p><p>' . __( 'You must publish content before you can add it as a menu item or you can add external links using the Links section below.' ) . '</p>' ) );
                 } else {
                         wp_send_json_success( array( 'items' => $items ) );
                 }