I built Perl 5.10.x@34793 — first time building Perl! — which I believe is the latest Perl 5.10 as of Nov 10th

It produces all yeses for the original snippet.
It produces yes,no for the minimal snippet.

Would you please submit a bug report?

In reply to Re^5: Oddity with Conditional Regex (bug!) by ikegami
in thread Oddity with Conditional Regex by Rabscuttle

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