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From: Michael Heerdegen <michael_heerdegen@web.de>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: emacs-devel@gnu.org
Subject: Re: Saving match data
Date: Wed, 28 Sep 2016 20:37:22 +0200	[thread overview]
Message-ID: <877f9v50rh.fsf@web.de> (raw)
In-Reply-To: <jwv37kj99ct.fsf-monnier+gmane.emacs.devel@gnu.org> (Stefan Monnier's message of "Wed, 28 Sep 2016 14:25:12 -0400")

Stefan Monnier <monnier@iro.umontreal.ca> writes:

> > This sounds crazy.  Sorry about this ignorant question: Why do we
> > use this model of match data: a global state that is changed as a
> > side effect in thousands of circumstances.
>
> That's a design choice with which we've lived for ever.

It's still not too late to build something better on top of it.


> I sometimes dream about extending pcase to support something like
>
>     (pcase <e>
>       ((re "^\\(?header:[^:]*\\):\\(?value:.*\\)") (cons header value))
>       ...)
>
> of course, it would also take multiple branches and merge them into
> a single DFA, and in some versions it even brings world peace,

Ambitious!


Michael.



  reply	other threads:[~2016-09-28 18:37 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-09-28 14:01 Saving match data Philipp Stephani
2016-09-28 15:03 ` Eli Zaretskii
2016-09-28 16:11 ` Stefan Monnier
2016-09-28 16:49   ` Michael Heerdegen
2016-09-28 18:25     ` Stefan Monnier
2016-09-28 18:37       ` Michael Heerdegen [this message]
2016-09-28 20:00     ` Eli Zaretskii
2016-09-28 20:15       ` Michael Heerdegen
2016-09-28 20:22         ` Eli Zaretskii
2016-09-28 20:42           ` Michael Heerdegen
2016-09-28 20:58             ` Lars Ingebrigtsen
2016-09-29  2:36             ` Eli Zaretskii
2016-10-08  4:02               ` Michael Heerdegen
2016-10-08  6:25                 ` Eli Zaretskii
2016-10-08 15:06                 ` Stefan Monnier
2017-06-16 19:24   ` Philipp Stephani
2017-06-16 19:53     ` Stefan Monnier
2017-06-16 22:16       ` Philipp Stephani
2017-06-17 13:53         ` Stefan Monnier
2017-06-17 14:02           ` Philipp Stephani
2017-10-08 15:56             ` Philipp Stephani
2017-10-08 16:01       ` Philipp Stephani
2016-09-28 17:00 ` Marcin Borkowski
2016-09-29  9:29   ` Uwe Brauer

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