global $wgLang, $wgLanguageCode;
$this->setVar( '_UserLang', $options['lang'] );
$wgLanguageCode = $options['lang'];
+ $this->setVar( 'wgLanguageCode', $wgLanguageCode );
$wgContLang = MediaWikiServices::getInstance()->getContentLanguage();
$wgLang = Language::factory( $options['lang'] );
RequestContext::getMain()->setLanguage( $wgLang );