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Re: Empty regex
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From:
Paul Fenwick
Date:
June 18, 2008 22:58
Subject:
Re: Empty regex
Message ID:
4859F56D.3070401@perltraining.com.au
G'day Alfie / p5p,
alfie@share-house.com.au wrote:
> Is there anyway to make /$string/ warn if $string is empty? Maybe even in
> future releases of perl?
I'm in Sydney, teaching a course, and away from my decent research
materials. I know that it's possible to overload qr{}, which presumably can
let us do whatever we want with qr'd regexps. Does this overload also allow
us to inspect *any* regexp in the code? I know overloading integers allows
us to do whatever we want with all the integers in the code.
If so, it should be easy enough make Regexp::Safer which simply forbids (or
whines verbosely) about empty regexps.
Cheerio,
Paul
--
Paul Fenwick <pjf@perltraining.com.au> | http://perltraining.com.au/
Director of Training | Ph: +61 3 9354 6001
Perl Training Australia | Fax: +61 3 9354 2681
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