Sorry, I had misunderstood. Had I understood your point, I would have said:

Indeed, without use re 'eval';, regexps won't knowingly run Perl code in interpolated variables. However, it's still possible to write very expensive regepxs and (I think) to crash Perl. I don't know if a crash can be exploited to execute native code.

In reply to Re^4: tf - tail a file and output separator line when inactive by ikegami
in thread tf - tail a file and output separator line when inactive by imp

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