Message 109399 - Python tracker

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Author	mrabarnett
Recipients	acooke, mark.dickinson, mrabarnett
Date	2010-07-06.15:52:05
SpamBayes Score	0.0085633
Marked as misclassified	No
Message-id	<1278431527.98.0.270570171929.issue9179@psf.upfronthosting.co.za>
In-reply-to

Content
Should a regex compile if a group is referenced before it's defined? Consider this: (?:(?(2)(a)\|(b))+ Other regex implementations permit forward references to groups. BTW, I had a look at the re module, found it too difficult, and so started on my own implementation of the matching engine (available on PyPI).

Should a regex compile if a group is referenced before it's defined?

Consider this:

    (?:(?(2)(a)|(b))+

Other regex implementations permit forward references to groups.

BTW, I had a look at the re module, found it too difficult, and so started on my own implementation of the matching engine (available on PyPI).

History
Date	User	Action	Args
2010-07-06 15:52:08	mrabarnett	set	recipients: + mrabarnett, mark.dickinson, acooke
2010-07-06 15:52:07	mrabarnett	set	messageid: <1278431527.98.0.270570171929.issue9179@psf.upfronthosting.co.za>
2010-07-06 15:52:05	mrabarnett	link	issue9179 messages
2010-07-06 15:52:05	mrabarnett	create