I'm pretty sure qr was introduced with 5.005, if not earlier. 
autarch@houseabsolute:~$ perl5.00503 -le 'print qr/foo/'
(?-xism:foo)

In reply to Re: Re: The latest & greatest in 5.8.x? by autarch
in thread The latest & greatest in 5.8.x? by drewbie

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