Thanks for the advice. I'd planned to use taint mode too, but my experience with taint-perl so far is that the biggest gains are from ensuring that you cannot pass along values that haven't been properly checked. My problem, though, is that I'm really not able to do much validation since I want to be able to pass through almost any valid POSIX regular expression to the 'search' command.

Just so I'm clear, won't using \Q and \E mangle the contents of $pattern in such a way that if it contained:

(tcp|udp)RxPacket

as an example, the 'search' command would see:

\(tcp\|udp\)RxPacket

Which would cause it to treat it as a regular expression with no special characters in it, ie, it would be looking for a string "(tcp|udp)RxPacket" rather than "tcpRxPacket" or "udpRxPacket".

-J.

In reply to Re: Re: Question about input pipes and sub-shells by Joey The Saint
in thread Question about input pipes and sub-shells by Joey The Saint

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