True. Using @- and @+ does not invoke the $`, $&, $' penalty. The $@ penalty is just the memcpy penaly I mentioned except it is enabled for all regexps, even the non-capturing ones. Any regexps that already use capturing can't be penalized anymore and aren't any slower because of it.

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In reply to Re^2: An optimization of last resort: eliminate capturing from your regexps by diotalevi
in thread An optimization of last resort: eliminate capturing from your regexps by diotalevi

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