public function delRightMost( $sSearch ) {
		$sSource = $this->value;
		for ( $i = strlen( $sSource ); $i >= 0; $i = $i - 1 ) {
			$f = strpos( $sSource, $sSearch, $i );
			if ( $f !== false ) {
				return new GString( substr( $sSource, 0, $f ) );
				break;
			}
		}

		return new GString( $sSource );
	}