From: Stefan Monnier <monnier@IRO.UMontreal.CA>
To: Dmitry Antipov <dmantipov@yandex.ru>
Cc: Emacs development discussions <emacs-devel@gnu.org>
Subject: Re: [RFC, experimental] save_{excursion,restriction}
Date: Wed, 25 Jul 2012 19:44:34 -0400 [thread overview]
Message-ID: <jwvobn3cstu.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <500FBEB2.7050302@yandex.ru> (Dmitry Antipov's message of "Wed, 25 Jul 2012 13:38:58 +0400")
>> I think you'll be better off making it into a standard Lisp_Object such
>> as pseudovector or a Lisp_Misc. The fact that they're only used on the
>> specpdl and hence managed via xmalloc+xfree shouldn't make them
>> that special.
> OK. The only question is: should `excursion' field of struct buffer
> be special, like `undo_list', or handled as usual? This patch assumes
> first scenario, but it's not a problem to follow the second one.
If the excursion is made into a Lisp_Object (as a pseudovector of
lisp_misc), then you don't need to have an `excursions' field in
`struct buffer', save_excursion_save can just return the excursion
object (i.e. the PVEC_EXCURSION in your code).
Stefan
next prev parent reply other threads:[~2012-07-25 23:44 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-23 17:07 [RFC, experimental] save_{excursion,restriction} Dmitry Antipov
2012-07-23 23:45 ` Stefan Monnier
2012-07-24 5:16 ` Dmitry Antipov
2012-07-24 9:37 ` Stefan Monnier
2012-07-24 11:28 ` Dmitry Antipov
2012-07-24 22:05 ` Stefan Monnier
2012-07-25 9:38 ` Dmitry Antipov
2012-07-25 23:44 ` Stefan Monnier [this message]
2012-07-26 5:14 ` Dmitry Antipov
2012-07-26 23:24 ` Stefan Monnier
2012-07-24 6:31 ` Ivan Andrus
2012-07-24 9:14 ` Stefan Monnier
2012-07-27 3:51 ` Chong Yidong
2012-07-27 8:00 ` Dmitry Antipov
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