A touch of history might shed some light on the matter too. The /o modifier existed quite a while before we were blessed with the ability to assign those compiled regular expressions to variables via qr// which, if I recall correctly, wasn't available in a stable release until 5.005.

-sauoq
"My two cents aren't worth a dime.";

In reply to Re: meaning of /o in regexes by sauoq
in thread meaning of /o in regexes by mce

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