> BTW, it's also worth adding that when you encounter "Perl-compatible" regular expressions in any other language, it's pretty much a safe bet that they aren't in fact.

AFAIK are tools and languages claiming "Perl-compatible" regular expression based on the same same PCRE library and are hence compatible to each other.

The problem is rather that PCRE isn't fully compatible to Perl, they rather try to mimic the incompatibilities in syntax to POSIX RegExes Gnu Basic RegExes and some added features Larry included into Perl.

I.o.W the syntax looks compatible but the results may not in edge cases.

edit

recommended read Friedl's "Mastering Regular Expression" from O'Reilly.

Cheers Rolf
(addicted to the Perl Programming Language and ☆☆☆☆ :)

PS: Je suis Charlie!

In reply to Re^2: Why aren't perl regular expressions really regular expressions? by LanX
in thread Why aren't perl regular expressions really regular expressions? by Dumu

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