Ah, thanks for that last remark, I'll keep it in mind for future testing.

However, I double-checked and while I thought I remembered that -Dusedevel implied -DDEBUGGING, it doesn't seem so*. Hence, the 5.11 I used for the above results was no debugging build. Sorry for the confusion!

Cheers,
Steffen

* I did "./Configure -Dusedevel -de 2>&1 | grep -i debug" and "make -j3 | grep -i debug" without any mention of DEBUGGING.

In reply to Re^3: Performance of possessive quantifiers by tsee
in thread Performance of possessive quantifiers by moritz

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