Ticket #33416: 33416.patch

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

@@ -467 +467 @@
                 // Menu loactions.
                 $locations     = get_registered_nav_menus();
                 $num_locations = count( array_keys( $locations ) );
-                $description   = '<p>' . sprintf( _n( 'Your theme contains %s menu location. Select which menu you would like to use.', 'Your theme contains %s menu locations. Select which menu appears in each location.', $num_locations ), number_format_i18n( $num_locations ) );
+                if ( 1 == $num_locations ) {
+                        $description = '<p>' . __( 'Your theme supports one menu location. Select which menu you would like to use.' );
+                } else {
+                        $description = '<p>' . sprintf( _n( 'Your theme contains %s menu location. Select which menu you would like to use.', 'Your theme contains %s menu locations. Select which menu appears in each location.', $num_locations ), number_format_i18n( $num_locations ) );
+                }
                 $description  .= '</p><p>' . __( 'You can also place menus in widget areas with the Custom Menu widget.' ) . '</p>';
 
                 $this->manager->add_section( 'menu_locations', array(