switch ($flags) {
			case 128: // GLOB_BRACE
				preg_match( '%(.+)\{(?:(.+))+\}%', $pattern, $matches );
				$path= $matches[1];
				$mimes= explode(',',$matches[2]);
				$res= array();
				foreach ($mimes as $mime) {
					$res= array_merge( $res, glob( $path . '*' . $mime ) );
				}
				break;
			default:
				$res= glob( $pattern, $flags );
				if ( $res === false ) {
					$res= array();
				}
		}