protected static function singleton() {
global $wgUseTidy, $wgTidyInternal, $wgTidyConf, $wgDebugTidy, $wgTidyConfig,
$wgTidyBin, $wgTidyOpts;
protected static function singleton() {
global $wgUseTidy, $wgTidyInternal, $wgTidyConf, $wgDebugTidy, $wgTidyConfig,
$wgTidyBin, $wgTidyOpts;