Re: Correct handling of case in unicode and regexps

References	<CABicbJLzQ9AHrGuaooiBRk45U5CHZYw6CodJFiQvAuF4+7kToA@mail.gmail.com> <CAHzaPEMmSExoFunOp_OyRCEOKE-+WzEO-hdb61DUiZFnzOG_rw@mail.gmail.com> <CABicbJJ0RoyQVdX9Hyd-fYeumS4faH2TVpYHiMwW0MRuPZUL8g@mail.gmail.com> <CABicbJ+fQW0og8rJsL5Bio_uTNCUtNwEN2MAtSdWmg49Zw7r8Q@mail.gmail.com> <5128FF37.7060500@mrabarnett.plus.com>
From	Devin Jeanpierre <jeanpierreda@gmail.com>
Date	2013-02-23 12:51 -0500
Subject	Re: Correct handling of case in unicode and regexps
Newsgroups	comp.lang.python
Message-ID	<mailman.2360.1361641954.2939.python-list@python.org> (permalink)

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On Sat, Feb 23, 2013 at 12:41 PM, MRAB <python@mrabarnett.plus.com> wrote:
> Getting full case folding to work can be tricky. There's always going to
> be a limit to what's worth doing.
>
> There are also areas where it's not clear what the result should be.
> You've already mentioned matching 's' against 'ß' (fails) and matching
> 'ss' against 'ß' (succeeds), but how about matching '(s)(s)' against 'ß'
> (fails)?
>
> For the record, Perl also says that 'ss' matches 'ß', but 's+' does not.

I would find it helpful to know the exact rules. The regex module docs
say that it works, but don't say what it means to "work".

-- Devin

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Re: Correct handling of case in unicode and regexps Devin Jeanpierre <jeanpierreda@gmail.com> - 2013-02-23 12:51 -0500

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