function iconv( $in, $out, $string ) {
		if ( strcasecmp( $in, 'x' ) == 0 && strcasecmp( $out, 'utf-8' ) == 0 ) {
			return preg_replace_callback (
				'/([cghjsu]x?)((?:xx)*)(?!x)/i',
				array( $this, 'strrtxuCallback' ), $string	);
		} elseif ( strcasecmp( $in, 'UTF-8' ) == 0 && strcasecmp( $out, 'x' ) == 0 ) {
			# Double Xs only if they follow cxapelutaj literoj.
			return preg_replace_callback(
				'/((?:[cghjsu]|\xc4[\x88\x89\x9c\x9d\xa4\xa5\xb4\xb5]|\xc5[\x9c\x9d\xac\xad])x*)/i',
				array( $this, 'strrtuxCallback' ), $string );
		}
		return parent::iconv( $in, $out, $string );
	}