From: Eli Zaretskii <eliz@gnu.org>
To: Gregory Heytings <gregory@heytings.org>
Cc: michael_heerdegen@web.de, 51883@debbugs.gnu.org
Subject: bug#51883: 29.0.50; Command to get accidentally deleted frames back
Date: Tue, 16 Nov 2021 19:40:08 +0200 [thread overview]
Message-ID: <838rxo0zk7.fsf@gnu.org> (raw)
In-Reply-To: <a8022ede87645d81f38a@heytings.org> (message from Gregory Heytings on Tue, 16 Nov 2021 17:05:07 +0000)
> Date: Tue, 16 Nov 2021 17:05:07 +0000
> From: Gregory Heytings <gregory@heytings.org>
> Cc: Michael Heerdegen <michael_heerdegen@web.de>
>
> Slightly improved patch attached.
Thanks, I have some comments below.
> +(@code{make-frame-command}). A prefix argument undeletes the last deleted
> +frame, a numerical prefix argument between 0 and 15 undeletes the
> +corresponding deleted frame, where 0 is the most recently deleted frame.
This is unusual meaning of prefix argument. Why not use zero for the
last, 1 for the one before that, etc.?
> +---
> +** Frames
> +
> ++++
> +*** With a prefix argument, the key 'C-x 5 2' undeletes deleted frames.
I would make the heading shorter and more to the point:
*** Deleted frames can now be undeleted.
> +(eval-when-compile (require 'frameset))
> +
> +(defvar undelete-frame--deleted-frames nil
> + "Internal variable used by `undelete-frame--save-deleted-frame'.")
> +
> +(defun undeleted-frame--save-deleted-frame (frame)
> + "Save the configuration of frames deleted with `delete-frame'.
> +Only the 16 most recently deleted frames are saved."
> + (when (frame-live-p frame)
> + (setq undelete-frame--deleted-frames
> + (cons (cons
> + (display-graphic-p)
> + (frameset-save (list frame)))
> + undelete-frame--deleted-frames))
> + (if (> (length undelete-frame--deleted-frames) 16)
> + (setq undelete-frame--deleted-frames
> + (butlast undelete-frame--deleted-frames)))))
> +
> +(add-hook 'delete-frame-functions #'undeleted-frame--save-deleted-frame)
I'd rather we didn't do that by default. Several reasons:
. the startup code deletes the terminal frame, so the above means we
will always load frameset, which is not a small package, at
startup, even if the user has no use for this functionality
. using add-hook in Emacs's own code _by_default_ is not a good
style; hooks are for customizing the default behavior
. saving configurations of 16 deleted frames _by_default_ means we
again impose on all users something that only some of them will
use
So I'd suggest instead making this an opt-in feature or maybe even
minor mode. Only when turned on should we save away the deleted
frames.
(And did you consider wrapping this into some history-like feature,
where users could interactively select which past frame to restore?)
> +The 16 most recently deleted frames can however be undeleted with
> +`undelete-frame', which see.
The "however" part is "out of the blue" here; I'd drop it.
next prev parent reply other threads:[~2021-11-16 17:40 UTC|newest]
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-15 23:38 bug#51883: 29.0.50; Command to get accidentally deleted frames back Michael Heerdegen
2021-11-16 7:53 ` Juri Linkov
2021-11-16 8:14 ` Lars Ingebrigtsen
2021-11-16 20:46 ` Juri Linkov
2021-11-16 8:49 ` Visuwesh via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-11-16 20:20 ` Juri Linkov
2021-11-16 15:17 ` Gregory Heytings
2021-11-16 17:05 ` Gregory Heytings
2021-11-16 17:40 ` Eli Zaretskii [this message]
2021-11-16 21:29 ` Gregory Heytings
2021-11-17 10:02 ` Gregory Heytings
2021-11-17 13:11 ` Eli Zaretskii
2021-11-17 17:06 ` Juri Linkov
2021-11-17 17:14 ` Eli Zaretskii
2021-11-19 9:00 ` Gregory Heytings
2021-11-19 12:17 ` Eli Zaretskii
2021-11-24 0:44 ` Gregory Heytings
2021-11-27 11:36 ` Michael Heerdegen
2021-11-27 11:53 ` Gregory Heytings
2021-11-27 12:05 ` Eli Zaretskii
2021-11-27 12:12 ` Gregory Heytings
2021-11-27 12:30 ` Andreas Schwab
2021-11-27 12:34 ` Eli Zaretskii
2021-11-27 12:23 ` Michael Heerdegen
2021-11-27 12:40 ` Eli Zaretskii
2021-11-27 13:22 ` Michael Heerdegen
2021-11-27 13:26 ` Eli Zaretskii
2021-11-27 13:34 ` Michael Heerdegen
2021-11-27 13:56 ` Eli Zaretskii
2021-11-27 13:59 ` Michael Heerdegen
2021-11-27 14:02 ` Eli Zaretskii
2021-11-27 14:08 ` Michael Heerdegen
2021-11-27 14:47 ` Eli Zaretskii
2021-11-27 14:12 ` Gregory Heytings
2021-11-27 14:24 ` Michael Heerdegen
2021-11-27 14:26 ` Gregory Heytings
2021-11-27 14:33 ` Michael Heerdegen
2021-11-27 14:42 ` Gregory Heytings
2021-11-27 14:54 ` Michael Heerdegen
2021-11-27 17:19 ` Gregory Heytings
2021-11-28 15:47 ` Michael Heerdegen
2021-11-29 13:38 ` Gregory Heytings
2021-11-29 18:18 ` Michael Heerdegen
2021-11-29 19:07 ` Michael Heerdegen
2021-11-29 20:19 ` Juri Linkov
2022-01-13 8:32 ` Juri Linkov
2022-01-14 8:12 ` Juri Linkov
2022-01-16 20:59 ` Juri Linkov
2022-01-17 0:08 ` Michael Heerdegen
2022-01-17 8:24 ` Juri Linkov
2022-01-17 13:00 ` Eli Zaretskii
2022-01-17 18:41 ` Juri Linkov
2022-01-17 18:51 ` Eli Zaretskii
2022-01-18 18:30 ` Juri Linkov
2022-01-19 18:37 ` Juri Linkov
2022-01-19 20:17 ` Eli Zaretskii
2021-12-12 2:44 ` Michael Heerdegen
2022-01-10 8:13 ` Michael Heerdegen
2021-11-27 14:48 ` Eli Zaretskii
2021-11-27 12:13 ` Michael Heerdegen
2022-01-22 18:10 ` Juri Linkov
2022-01-21 17:52 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-01-22 18:08 ` Juri Linkov
2022-01-22 21:26 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-01-23 9:11 ` Juri Linkov
2022-01-23 16:01 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-01-23 18:12 ` Juri Linkov
2022-01-23 21:26 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-01-24 18:12 ` Juri Linkov
2022-01-24 18:32 ` Eli Zaretskii
2022-01-25 9:28 ` martin rudalics
2022-01-25 12:29 ` Eli Zaretskii
2022-01-25 15:58 ` martin rudalics
2022-01-27 17:21 ` Juri Linkov
2022-01-27 17:27 ` Eli Zaretskii
2022-01-27 17:48 ` Juri Linkov
2022-01-24 23:00 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-01-27 17:19 ` Juri Linkov
2022-01-30 16:39 ` Juri Linkov
2022-01-30 16:59 ` Eli Zaretskii
2022-01-30 17:17 ` Juri Linkov
2022-01-30 18:17 ` Eli Zaretskii
2022-01-30 20:49 ` Juri Linkov
2021-11-16 20:30 ` Juri Linkov
2021-11-17 4:13 ` Richard Stallman
2021-11-17 10:07 ` Gregory Heytings
2021-11-17 16:39 ` bug#51883: [External] : " Drew Adams
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