}
if ( !$foundVary ) {
header( 'Vary: Accept-Encoding' );
- header( 'X-Vary-Options: Accept-Encoding;list-contains=gzip' );
+ global $wgUseXVO;
+ if ( $wgUseXVO ) {
+ header( 'X-Vary-Options: Accept-Encoding;list-contains=gzip' );
+ }
}
return $s;
}
$out = <<<EOT
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en" dir="ltr">
+<html xmlns="http://www.w3.org/1999/xhtml" lang="en" dir="ltr">
<head>
<title>HTML validation error</title>
<style>