GNU bug report logs - #77405
31.0.50; speedbar-window can't be opened after killing speedbar-buffer

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Package: emacs;

Reported by: Rudi Schlatte <rudi <at> constantly.at>

Date: Mon, 31 Mar 2025 14:38:02 UTC

Severity: normal

Found in version 31.0.50

Done: Eli Zaretskii <eliz <at> gnu.org>

Bug is archived. No further changes may be made.

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Report forwarded to bug-gnu-emacs <at> gnu.org:
bug#77405; Package emacs. (Mon, 31 Mar 2025 14:38:03 GMT) Full text and rfc822 format available.

Acknowledgement sent to Rudi Schlatte <rudi <at> constantly.at>:
New bug report received and forwarded. Copy sent to bug-gnu-emacs <at> gnu.org. (Mon, 31 Mar 2025 14:38:03 GMT) Full text and rfc822 format available.

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Rudi Schlatte <rudi <at> constantly.at>
To: bug-gnu-emacs <at> gnu.org
Subject: 31.0.50; speedbar-window can't be opened after killing speedbar-buffer
Date: Mon, 31 Mar 2025 16:35:59 +0200
Hi, the following recipe leads to a state where speedbar-window cannot
be activated anymore.

- M-x speedbar-window RET
- Move point into the speedbar side window, e.g., by clicking into the
window
- C-x k RET (killing the speedbar buffer)
- M-x speedbar-window RET

After this, the following can be found in *Messages*:

speedbar-window: Attempt to delete the sole visible or iconified frame
DFRAME TIMER ERROR: (error "Selecting deleted buffer")

Adding (buffer-live-p speedbar-buffer) into speedbar-frame-or-window
seems to fix this:

(defun speedbar-frame-or-window ()
  "Return `frame' or `window' if one of each are open.
Return nil if both are closed."
  (cond
   ((speedbar-window--live-p)
    'window)
   ((and (frame-live-p (speedbar-current-frame))
	 speedbar-buffer
         (buffer-live-p speedbar-buffer) ; <<< HERE
	 (not (speedbar-window--live-p)))
    'frame)
   (t nil)))



In GNU Emacs 31.0.50 (build 1, aarch64-apple-darwin24.3.0, NS
appkit-2575.40 Version 15.3.2 (Build 24D81)) of 2025-03-31 built on
Cafeolix.local
Repository revision: 1ed1cc83491311517ba46dff73fdc4383ffd4102
Repository branch: master
Windowing system distributor 'Apple', version 10.3.2575
System Description:  macOS 15.3.2

Configured features:
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RSVG SQLITE3 THREADS TOOLKIT_SCROLL_BARS TREE_SITTER WEBP XIM ZLIB

Important settings:
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Major mode: Help

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/Users/rudi/.emacs.d/elpa/org-9.7.27/ob-eshell hides /Users/rudi/Source/emacs/nextstep/Emacs.app/Contents/Resources/lisp/org/ob-eshell
/Users/rudi/.emacs.d/elpa/org-9.7.27/ox-ascii hides /Users/rudi/Source/emacs/nextstep/Emacs.app/Contents/Resources/lisp/org/ox-ascii
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Features:
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Memory information:
((conses 16 1040153 204420) (symbols 48 64704 1)
(strings 32 246071 20374) (string-bytes 1 6850811)
(vectors 16 117488) (vector-slots 8 1867581 554150)
(floats 8 2115 1239) (intervals 56 9725 5555) (buffers 992 107))




Information forwarded to bug-gnu-emacs <at> gnu.org:
bug#77405; Package emacs. (Mon, 31 Mar 2025 15:18:04 GMT) Full text and rfc822 format available.

Message #8 received at 77405 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Rudi Schlatte <rudi <at> constantly.at>,
 Vincenzo Pupillo <vincenzo.pupillo <at> unimi.it>
Cc: 77405 <at> debbugs.gnu.org
Subject: Re: bug#77405: 31.0.50;
 speedbar-window can't be opened after killing speedbar-buffer
Date: Mon, 31 Mar 2025 18:16:55 +0300
> From: Rudi Schlatte <rudi <at> constantly.at>
> Date: Mon, 31 Mar 2025 16:35:59 +0200
> 
> 
> Hi, the following recipe leads to a state where speedbar-window cannot
> be activated anymore.
> 
> - M-x speedbar-window RET
> - Move point into the speedbar side window, e.g., by clicking into the
> window
> - C-x k RET (killing the speedbar buffer)
> - M-x speedbar-window RET
> 
> After this, the following can be found in *Messages*:
> 
> speedbar-window: Attempt to delete the sole visible or iconified frame
> DFRAME TIMER ERROR: (error "Selecting deleted buffer")
> 
> Adding (buffer-live-p speedbar-buffer) into speedbar-frame-or-window
> seems to fix this:
> 
> (defun speedbar-frame-or-window ()
>   "Return `frame' or `window' if one of each are open.
> Return nil if both are closed."
>   (cond
>    ((speedbar-window--live-p)
>     'window)
>    ((and (frame-live-p (speedbar-current-frame))
> 	 speedbar-buffer
>          (buffer-live-p speedbar-buffer) ; <<< HERE
> 	 (not (speedbar-window--live-p)))
>     'frame)
>    (t nil)))

Thanks.

Vincenzo, could you please look into this?




Information forwarded to bug-gnu-emacs <at> gnu.org:
bug#77405; Package emacs. (Mon, 31 Mar 2025 20:21:02 GMT) Full text and rfc822 format available.

Message #11 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Vincenzo Pupillo <v.pupillo <at> gmail.com>
To: Rudi Schlatte <rudi <at> constantly.at>, bug-gnu-emacs <at> gnu.org
Cc: 77405 <at> debbugs.gnu.org, Eli Zaretskii <eliz <at> gnu.org>
Subject: Re: bug#77405: 31.0.50;
 speedbar-window can't be opened after killing speedbar-buffer
Date: Mon, 31 Mar 2025 22:19:51 +0200
[Message part 1 (text/plain, inline)]
Ciao, I confirm the bug and also the fix suggested by Rudi. The attached patch 
solves the problem.

Thanks Rudi for the bug report.

Vincenzo

In data lunedì 31 marzo 2025 17:16:55 Ora legale dell’Europa centrale, Eli 
Zaretskii ha scritto:
> > From: Rudi Schlatte <rudi <at> constantly.at>
> > Date: Mon, 31 Mar 2025 16:35:59 +0200
> > 
> > 
> > Hi, the following recipe leads to a state where speedbar-window cannot
> > be activated anymore.
> > 
> > - M-x speedbar-window RET
> > - Move point into the speedbar side window, e.g., by clicking into the
> > window
> > - C-x k RET (killing the speedbar buffer)
> > - M-x speedbar-window RET
> > 
> > After this, the following can be found in *Messages*:
> > 
> > speedbar-window: Attempt to delete the sole visible or iconified frame
> > DFRAME TIMER ERROR: (error "Selecting deleted buffer")
> > 
> > Adding (buffer-live-p speedbar-buffer) into speedbar-frame-or-window
> > seems to fix this:
> > 
> > (defun speedbar-frame-or-window ()
> > 
> >   "Return `frame' or `window' if one of each are open.
> > 
> > Return nil if both are closed."
> > 
> >   (cond
> >   
> >    ((speedbar-window--live-p)
> >    
> >     'window)
> >    
> >    ((and (frame-live-p (speedbar-current-frame))
> > 	 
> > 	 speedbar-buffer
> > 	 
> >          (buffer-live-p speedbar-buffer) ; <<< HERE
> > 	 
> > 	 (not (speedbar-window--live-p)))
> > 	 
> >     'frame)
> >    
> >    (t nil)))
> 
> Thanks.
> 
> Vincenzo, could you please look into this?

[0001-Added-a-check-to-see-if-the-speedbar-buffer-is-still.patch (text/x-patch, attachment)]

Information forwarded to bug-gnu-emacs <at> gnu.org:
bug#77405; Package emacs. (Mon, 31 Mar 2025 20:21:02 GMT) Full text and rfc822 format available.

Reply sent to Eli Zaretskii <eliz <at> gnu.org>:
You have taken responsibility. (Tue, 01 Apr 2025 11:29:02 GMT) Full text and rfc822 format available.

Notification sent to Rudi Schlatte <rudi <at> constantly.at>:
bug acknowledged by developer. (Tue, 01 Apr 2025 11:29:02 GMT) Full text and rfc822 format available.

Message #19 received at 77405-done <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Vincenzo Pupillo <v.pupillo <at> gmail.com>
Cc: 77405-done <at> debbugs.gnu.org, rudi <at> constantly.at
Subject: Re: bug#77405: 31.0.50;
 speedbar-window can't be opened after killing speedbar-buffer
Date: Tue, 01 Apr 2025 14:28:13 +0300
> From: Vincenzo Pupillo <v.pupillo <at> gmail.com>
> Cc: 77405 <at> debbugs.gnu.org, Eli Zaretskii <eliz <at> gnu.org>
> Date: Mon, 31 Mar 2025 22:19:51 +0200
> 
> Ciao, I confirm the bug and also the fix suggested by Rudi. The attached patch 
> solves the problem.
> 
> Thanks Rudi for the bug report.

Thanks, installed on the master branch, and closing the bug.




bug archived. Request was from Debbugs Internal Request <help-debbugs <at> gnu.org> to internal_control <at> debbugs.gnu.org. (Wed, 30 Apr 2025 11:24:06 GMT) Full text and rfc822 format available.

This bug report was last modified 107 days ago.

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