*/
static function setupAttributeWhitelist() {
global $wgAllowRdfaAttributes, $wgAllowMicrodataAttributes;
-
static $whitelist, $staticInitialised;
+
$globalContext = implode( '-', compact( 'wgAllowRdfaAttributes', 'wgAllowMicrodataAttributes' ) );
- if ( isset( $whitelist ) && $staticInitialised == $globalContext ) {
+ if ( $whitelist !== null && $staticInitialised == $globalContext ) {
return $whitelist;
}