Ticket #27299: 27299.2.patch

wp-admin/includes/widgets.php

@@ -16 +16 @@
 
         $sort = $wp_registered_widgets;
         usort( $sort, '_sort_name_callback' );
+        /**
+         * Filter the widgets order for the Widgets screen.
+         *
+         * @since 4.1
+         *
+         * @param array      $sort the alphabetically ordered list of available widgets.
+         */
+        $sort = apply_filters( 'available_widgets_order', $sort );
+        
         $done = array();
 
         foreach ( $sort as $widget ) {

wp-includes/class-wp-customize-widgets.php

@@ -861 +861 @@
 
                 $sort = $wp_registered_widgets;
                 usort( $sort, array( $this, '_sort_name_callback' ) );
+                /** This filter is documented in wp-admin/includes/widgets.php */
+                $sort = apply_filters( 'available_widgets_order', $sort );
+                
                 $done = array();
 
                 foreach ( $sort as $widget ) {