hm, we seem to be talking about different things
I thought we were talking about using strings obtained from an external source (such as a file or DB) as a regex, and whether the (?{...}) feature could be exploited in that case. The example you gave of concatting two halves of a regex still requires the code to be literal in the source (albeit split) to not need 'use re eval' in the src code, even prior to 5.18.0.

Dave.

In reply to Re^6: Is it safe to use external strings for regexes? by dave_the_m
in thread Is it safe to use external strings for regexes? by stevieb

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