$x="ad"; for ($x) { /a/gc; /\Gb?/gc; ok 3, /\Gc?/gc; }

This is documented behaviour in perlre: Repeated patterns matching zero length substrings.

update: added the part of the quiz i am referring to.

-enlil

In reply to Re: notabug quiz (Spoiler for #3) by Enlil
in thread notabug quiz by ysth

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