From: Eli Zaretskii <eliz@gnu.org>
To: Chong Yidong <cyd@stupidchicken.com>
Cc: 8219@debbugs.gnu.org, emacs-devel@gnu.org
Subject: bug#8219: Effect of deletions on indirect buffers (Bug#8219)
Date: Sat, 12 Mar 2011 10:15:05 +0200 [thread overview]
Message-ID: <834o78u54m.fsf__26482.2650388398$1299919032$gmane$org@gnu.org> (raw)
In-Reply-To: <874o79nzla.fsf@stupidchicken.com>
> From: Chong Yidong <cyd@stupidchicken.com>
> Cc: 8219@debbugs.gnu.org, emacs-devel@gnu.org
> Date: Fri, 11 Mar 2011 15:58:57 -0500
>
> Eli Zaretskii <eliz@gnu.org> writes:
>
> >> Hence, in the aftermath of a deletion, buffer B's values of PT (and
> >> BUF_BEGV and BUF_ZV) can be larger than BUF_ZV.
> >
> > Isn't that a bug, right there? Why doesn't del_range_2 update the
> > indirect buffer (B) as well, when deletion removes text so that its PT
> > becomes invalid?
>
> This is not currently easy. We don't keep track of indirect buffers
> (looping over the buffer list each time we do a deletion would be rather
> inefficient), so this would need some new members of the buffer struct.
We could do that lazily, whenever something (including redisplay) is
done on a buffer that happens to be an indirect buffer.
next prev parent reply other threads:[~2011-03-12 8:15 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <877hc5bfqy.fsf@stupidchicken.com>
2011-03-11 20:07 ` bug#8219: Effect of deletions on indirect buffers (Bug#8219) Eli Zaretskii
[not found] ` <838vwlto85.fsf@gnu.org>
2011-03-11 20:58 ` Chong Yidong
2011-03-11 23:19 ` Stefan Monnier
[not found] ` <874o79nzla.fsf@stupidchicken.com>
2011-03-12 8:15 ` Eli Zaretskii [this message]
[not found] ` <jwv1v2dxn68.fsf-monnier+emacs@gnu.org>
2011-03-12 9:01 ` Eli Zaretskii
[not found] ` <83wrk4soee.fsf@gnu.org>
2011-03-12 20:47 ` Stefan Monnier
[not found] ` <jwvipvooyog.fsf-monnier+emacs@gnu.org>
2011-03-13 16:30 ` Chong Yidong
[not found] ` <yyx4o77asos.fsf@fencepost.gnu.org>
2011-03-13 17:09 ` Chong Yidong
2011-03-13 22:29 ` Chong Yidong
[not found] ` <87wrk2vemq.fsf@stupidchicken.com>
2011-03-14 2:41 ` Juanma Barranquero
[not found] ` <AANLkTim1+q+a4ZFa2SZVcc51KE=v5GSJM9oTUT5yXoCh@mail.gmail.com>
2011-03-14 16:18 ` Chong Yidong
2011-03-10 20:24 bug#8219: 23.3; Crash in indirect buffer Chong Yidong
2011-03-11 19:48 ` bug#8219: Effect of deletions on indirect buffers (Bug#8219) Chong Yidong
2011-03-19 16:44 ` Chong Yidong
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