You are showing a semantic where /o MUST NOT be applied. Obviously you shouldn't inhibit recompilation if you need recompilation.

One of the links sleet listed upthread (or the docs🤔) were explicit that /o would inhibit any recompilation of the regex even with nested variables, hence solving the performance issue in a loop.

> perldoc perlre does note that /o is pretty broken

Dunno, a literal quote would be helpful.

A concrete test - probably with re debug - even more. :)

Cheers Rolf
(addicted to the Perl Programming Language :)
see Wikisyntax for the Monastery

In reply to Re^11: Reusing a complex regexp in multiple spots, escaping the regexp by LanX
in thread Reusing a complex regexp in multiple spots, escaping the regexp by ecm

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