"Evaluation:\tWrong!\x07\x07\x07\r\n" You want to convert the string literal to an internal buffer, interpreting the escape sequences. In the same way, you wan

"Evaluation:\tWrong!\x07\x07\x07\r\n" You want to convert the string literal to an internal buffer, interpreting the escape sequences. In the same way, you want to parse integers. You cannot really do that with a regular expression. RE is for matching, not for transforming.