Subject: bug#37941: closed (Re: bug#37941: 26.3.50; Wrong behavior when reverting a tabulated-list-mode buffer with truncated lines)

From: [email-masked] (GNU bug Tracking System)
Date: Sun, 27 Oct 2019 19:25:02 +0000

Your bug report

#37941: 26.3.50; Wrong behavior when reverting a tabulated-list-mode buffer with truncated lines

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to [email-masked].

-- 
37941: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=37941
GNU Bug Tracking System
Contact [email-masked] with problems

Subject: Re: bug#37941: 26.3.50; Wrong behavior when reverting a tabulated-list-mode buffer with truncated lines
From: Eli Zaretskii <[email-masked]>
To: Michał Krzywkowski <[email-masked]>
Cc: [email-masked]
Date: Sun, 27 Oct 2019 21:24:25 +0200
List-Id: <debbugs-submit.debbugs.gnu.org>

> From: Michał Krzywkowski <[email-masked]>
> Cc: Michał Krzywkowski <[email-masked]>,
>  [email-masked]
> Date: Sun, 27 Oct 2019 20:12:49 +0100
> 
> >>>>> "Eli" == Eli Zaretskii <[email-masked]> writes:
>     Eli> Thanks, should be fixed now.  Please test.
> 
> Indeed the problem is fixed now, thanks.

Thanks for testing, I'm therefore closing this bug.

Subject: 26.3.50; Wrong behavior when reverting a tabulated-list-mode buffer with truncated lines
From: Michał Krzywkowski <[email-masked]>
To: [email-masked]
Date: Sun, 27 Oct 2019 11:02:39 +0100
List-Id: <debbugs-submit.debbugs.gnu.org>

When I revert a regular tabulated-list-mode buffer, the point stays the
same, and the displayed buffer boundaries remain the same as well.

However, when the entries in tabulated-list-entries contain strings that
are too long and will be truncated, reverting such buffer will scroll
the screen by one line.

To see this behavior, evaluate in emacs -Q, then type g:

  (with-current-buffer (generate-new-buffer "test")
    (require 'cl-lib)
    (tabulated-list-mode)
    (setq tabulated-list-format [("No." 5) ("Message" 10)])
    (let ((message (make-string 100 ?a)))
      (setq tabulated-list-entries
            (cl-loop for i from 1 to 100
                     collect `(,i [,(number-to-string i) ,message]))))
    (tabulated-list-init-header)
    (revert-buffer)
    (forward-line 50)
    (pop-to-buffer (current-buffer))
    (recenter))

You can also see that if the lines are not truncated, the behavior is
correct.

In GNU Emacs 26.3.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.5)
 of 2019-10-08 built on debian
Repository revision: 55dcd32ad2209dc34bfb6b713bf73be9bf4c4cb2
Windowing system distributor 'The X.Org Foundation', version 11.0.12004000
System Description:	Debian GNU/Linux 10 (buster)

--
Michał Krzywkowski
PGP: A5A7 06C4 28EF 8F64 2868 13A1 7BDE C129 F0B8 09A1