public function getRedirect( $par ) {
$file = $par ?: $this->getRequest()->getText( 'file' );
+ $redirect = null;
if ( $file ) {
- $argument = "file/$file";
- } else {
- $argument = 'file';
+ $redirect = SpecialPage::getSafeTitleFor( 'Redirect', "file/$file" );
}
- return SpecialPage::getSafeTitleFor( 'Redirect', $argument );
+ if ( $redirect === null ) {
+ // The user input is empty or an invalid title,
+ // redirect to form of Special:Redirect with the invalid value prefilled
+ $this->mAddedRedirectParams['wpvalue'] = $file;
+ $redirect = SpecialPage::getSafeTitleFor( 'Redirect', 'file' );
+ }
+ return $redirect;
}
protected function getGroupName() {