[Python-Dev] Urgent: regex Perl vs Python

[Christian Tismer]

[me about compatibility to which Perl version]

Holger:
 > Maybe you could mail the current regex maintainer (IIRC Frederik Lundh).
 >
 > Or work yourself and dig through google :-)

I'm at a customer in the US and cannot spend hours on
this (and re stuff is not my virtue), so I tried to
ask for help.

Guido:
> Nobody knows, Chris.  We started with Perl regexes as they were in
> Perl version 5.x (for some low value of x that nobody remembers),
> threw out everything that Python couldn't implement (like references
> to variables with $name), threw away a few things that we felt were
> only present for Perl 4 backwards compatibility (like some of the
> ambiguity between octal character references and backreferences), and
> added some Python specific features like named groups.  Hardly any new
> Perl regex features were added, but I can't guarantee that we didn't
> add anything.

Ok, that's a lot of help to me.

> Your best bet is to compare the reference docs for Python and Perl
> regexes.

Will try to defer this to the client, after giving
him the the above info.

Many thanks - chris

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