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From: Michael Heerdegen <michael_heerdegen@web.de>
To: martin rudalics <rudalics@gmx.at>
Cc: 46908@debbugs.gnu.org, Yuan Fu <casouri@gmail.com>
Subject: bug#46908: 28.0.50; Dozens of spurious markers in buffer-undo-list
Date: Mon, 08 Mar 2021 05:00:13 +0100	[thread overview]
Message-ID: <87mtve2t2q.fsf@web.de> (raw)
In-Reply-To: <87y2f1m7ez.fsf@web.de> (Michael Heerdegen's message of "Sat, 06 Mar 2021 01:51:00 +0100")

Michael Heerdegen <michael_heerdegen@web.de> writes:

> I cannot confirm that, no.  I can reproduce the issue in a newly built
> Emacs 27 as well as in the 27 that comes with Debian.  "It" again being
> `count-markers-in-buffer-undo-list'.

The issue disappears (marker count stays constantly less than 3) if I
comment out these two expressions in `push-mark':

  (add-to-history 'mark-ring (copy-marker (mark-marker)) mark-ring-max t)

  (add-to-history
    'global-mark-ring (copy-marker (mark-marker)) global-mark-ring-max t)

I think we really have a problem here: when those newly created markers
are thrown out of the rings, they are not invalidated, and are also
still referenced by buffer-undo-list, so they will live forever, AFAIU.

Michael.





  parent reply	other threads:[~2021-03-08  4:00 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-03 22:45 bug#46908: 28.0.50; Dozens of spurious markers in buffer-undo-list Michael Heerdegen
2021-03-04  8:35 ` martin rudalics
2021-03-04 16:40   ` Michael Heerdegen
2021-03-04 17:20     ` martin rudalics
2021-03-04 18:35       ` Michael Heerdegen
2021-03-05  9:11         ` martin rudalics
2021-03-05  9:50           ` martin rudalics
2021-03-06  0:51             ` Michael Heerdegen
2021-03-06  7:48               ` Eli Zaretskii
2021-03-07  2:45                 ` Michael Heerdegen
2021-03-06  8:40               ` martin rudalics
2021-03-07  2:40                 ` Michael Heerdegen
2021-03-08  4:00               ` Michael Heerdegen [this message]
2021-03-08  8:26                 ` martin rudalics
2021-03-09  2:04                   ` Michael Heerdegen
2021-03-09  2:20                     ` Michael Heerdegen
2022-06-20  0:04                       ` Lars Ingebrigtsen
2022-06-20 13:56                         ` Michael Heerdegen
2021-03-09  8:10                     ` martin rudalics
2021-03-10  2:17                       ` Michael Heerdegen
2021-03-10  5:49                     ` Richard Stallman
2021-03-09  6:19                 ` Richard Stallman
2021-03-10  2:22                   ` Michael Heerdegen

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