Just a FYI: perl developers are already aware. (but I suppose you could still create an issue for it; less chance for it to be forgotten) It's also been discussed a bit on the #p5p IRC channel.

In reply to Re^4: regex gotcha moving from 5.8.8 to 5.30.0? by Animator
in thread regex gotcha moving from 5.8.8 to 5.30.0? by mordibity

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