The regex engine does not allow (?{code}) blocks to alter pos(). I wanted to do that once and dug into the source. Just prior to executing the code it saves a copy of pos() and restores it immediately afterward. tye answered the other concern but didn't address this issue.

Fun Fun Fun in the Fluffy Chair

In reply to Re^2: Applying regexes to streams: Perl enhancement idea by diotalevi
in thread Applying regexes to streams: Perl enhancement idea by tye

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