Perl has basically become the grandfather of all regular expressions. I know it wasn't the first, but it's either the best implemented or most well known, so every other language that I've seen compares their regular expressions to Perl's.

What I'm looking for is some reference that lists all the differences between regular expressions in various languages (particularly Javascript) and Perl. I've been searching for the solution for ages, but so far all I've found is a decent, if brief, reference in the O'Reilly PHP book.

In reply to Slightly Off Topic: Differences with Regular Expressions in other languages by Cap'n Steve

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