In this case OpenBSD version does a much better job imo (although I don't agree with the lack of braces). The performance of such a tool does not matter at all,

In this case OpenBSD version does a much better job imo (although I don't agree with the lack of braces). The performance of such a tool does not matter at all, and a larger implementation is not only unnecessary, but it can actually introduce bugs in otherwise completely straightforward code