Ticket #30738: export-setting-defaults.diff

src/wp-admin/js/customize-controls.js

@@ -28 +28 @@
                         setting.id = id;
                         setting.transport = setting.transport || 'refresh';
                         setting._dirty = options.dirty || false;
+                        setting['default'] = options['default'];
                         setting.notifications = new api.Values({ defaultConstructor: api.Notification });
 
                         // Whenever the setting's value changes, refresh the preview.
@@ -4607 +4608 @@
                         var constructor = api.settingConstructor[ data.type ] || api.Setting,
                                 setting;
 
-                        setting = new constructor( id, data.value, {
-                                transport: data.transport,
-                                previewer: api.previewer,
-                                dirty: !! data.dirty
-                        } );
+                        setting = new constructor( id, data.value, _.extend(
+                                {},
+                                data,
+                                { previewer: api.previewer }
+                        ) );
                         api.add( id, setting );
                 });
 

src/wp-includes/class-wp-customize-setting.php

@@ -822 +822 @@
                         'transport' => $this->transport,
                         'dirty'     => $this->dirty,
                         'type'      => $this->type,
+                        'default'   => $this->default,
                 );
         }