[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: bug#65734: [BUG] kill-whole-line on folded subtrees [9.6.8 (release_
From: |
Sebastian Miele |
Subject: |
Re: bug#65734: [BUG] kill-whole-line on folded subtrees [9.6.8 (release_9.6.8-3-g21171d @ /home/w/usr/emacs/0/29/0/lisp/org/)] |
Date: |
Tue, 05 Sep 2023 17:25:38 +0200 |
> From: Eli Zaretskii <eliz@gnu.org>
> Date: Tue, 2023-09-05 14:54 +0300
>
> […]
>
> So we could decide that this command needs to become smarter when the
> visual line includes invisible text. That is, improve the command
> without making any Org-specific changes anywhere. Patches to that
> effect are welcome.
The following would do it. I think I tested it rather thoroughly.
During testing I found another bug that is addressed by the let-binding
of kill-read-only-ok during the first kill-region below.
diff --git a/lisp/simple.el b/lisp/simple.el
index abd587245fe..d983cb85ab3 100644
--- a/lisp/simple.el
+++ b/lisp/simple.el
@@ -6631,28 +6631,50 @@ kill-whole-line
(unless (eq last-command 'kill-region)
(kill-new "")
(setq last-command 'kill-region))
- (cond ((zerop arg)
- ;; We need to kill in two steps, because the previous command
- ;; could have been a kill command, in which case the text
- ;; before point needs to be prepended to the current kill
- ;; ring entry and the text after point appended. Also, we
- ;; need to use save-excursion to avoid copying the same text
- ;; twice to the kill ring in read-only buffers.
- (save-excursion
- (kill-region (point) (progn (forward-visible-line 0) (point))))
- (kill-region (point) (progn (end-of-visible-line) (point))))
- ((< arg 0)
- (save-excursion
- (kill-region (point) (progn (end-of-visible-line) (point))))
- (kill-region (point)
- (progn (forward-visible-line (1+ arg))
- (unless (bobp) (backward-char))
- (point))))
- (t
- (save-excursion
- (kill-region (point) (progn (forward-visible-line 0) (point))))
- (kill-region (point)
- (progn (forward-visible-line arg) (point))))))
+ ;; - We need to kill in two steps, because the previous command
+ ;; could have been a kill command, in which case the text before
+ ;; point needs to be prepended to the current kill ring entry and
+ ;; the text after point appended.
+ ;; - We need to be careful to avoid copying text twice to the kill
+ ;; ring in read-only buffers.
+ ;; - We need to determine the boundaries of visible lines before we
+ ;; do the first kill, because that may change visibility
+ ;; (bug#65734).
+ (let ((regions-begin (point-marker))
+ region1-end)
+ (cond ((zerop arg)
+ (setq region1-end (save-excursion
+ (forward-visible-line 0)
+ (point-marker)))
+ (end-of-visible-line))
+ ((< arg 0)
+ (setq region1-end (save-excursion
+ (end-of-visible-line)
+ (point-marker)))
+ (forward-visible-line (1+ arg))
+ (unless (bobp) (backward-char)))
+ (t
+ (setq region1-end (save-excursion
+ (forward-visible-line 0)
+ (point-marker)))
+ (progn (forward-visible-line arg))))
+ ;; - Pass the marker positions and not the markers themselves.
+ ;; kill-region determines whether to prepend or append to a
+ ;; previous kill by checking the direction of the region. But
+ ;; it deletes the content and hence moves the markers before
+ ;; that. That effectively makes every region delimited by
+ ;; markers an (empty) forward region.
+ ;; - Make the first kill-region emit a non-local exit only if the
+ ;; second kill-region below would not operate on a non-empty
+ ;; region.
+ (let ((kill-read-only-ok (or kill-read-only-ok
+ (/= regions-begin (point)))))
+ (kill-region (marker-position regions-begin)
+ (marker-position region1-end)))
+ (kill-region (marker-position regions-begin)
+ (point))
+ (set-marker regions-begin nil)
+ (set-marker region1-end nil)))
(defun forward-visible-line (arg)
"Move forward by ARG lines, ignoring currently invisible newlines only.
- [BUG] kill-whole-line on folded subtrees [9.6.8 (release_9.6.8-3-g21171d @ /home/w/usr/emacs/0/29/0/lisp/org/)], Sebastian Miele, 2023/09/04
- Re: [BUG] kill-whole-line on folded subtrees [9.6.8 (release_9.6.8-3-g21171d @ /home/w/usr/emacs/0/29/0/lisp/org/)], Ihor Radchenko, 2023/09/05
- Re: bug#65734: [BUG] kill-whole-line on folded subtrees [9.6.8 (release_9.6.8-3-g21171d @ /home/w/usr/emacs/0/29/0/lisp/org/)], Eli Zaretskii, 2023/09/05
- Re: bug#65734: [BUG] kill-whole-line on folded subtrees [9.6.8 (release_9.6.8-3-g21171d @ /home/w/usr/emacs/0/29/0/lisp/org/)],
Sebastian Miele <=
- Re: bug#65734: [BUG] kill-whole-line on folded subtrees [9.6.8 (release_9.6.8-3-g21171d @ /home/w/usr/emacs/0/29/0/lisp/org/)], Eli Zaretskii, 2023/09/05
- Re: bug#65734: [BUG] kill-whole-line on folded subtrees [9.6.8 (release_9.6.8-3-g21171d @ /home/w/usr/emacs/0/29/0/lisp/org/)], Ihor Radchenko, 2023/09/06
- Re: bug#65734: [BUG] kill-whole-line on folded subtrees [9.6.8 (release_9.6.8-3-g21171d @ /home/w/usr/emacs/0/29/0/lisp/org/)], Eli Zaretskii, 2023/09/06
- Re: bug#65734: [BUG] kill-whole-line on folded subtrees [9.6.8 (release_9.6.8-3-g21171d @ /home/w/usr/emacs/0/29/0/lisp/org/)], Sebastian Miele, 2023/09/06
- Re: bug#65734: [BUG] kill-whole-line on folded subtrees [9.6.8 (release_9.6.8-3-g21171d @ /home/w/usr/emacs/0/29/0/lisp/org/)], Ihor Radchenko, 2023/09/07
- Re: bug#65734: [BUG] kill-whole-line on folded subtrees [9.6.8 (release_9.6.8-3-g21171d @ /home/w/usr/emacs/0/29/0/lisp/org/)], Ihor Radchenko, 2023/09/06
- Re: bug#65734: [BUG] kill-whole-line on folded subtrees [9.6.8 (release_9.6.8-3-g21171d @ /home/w/usr/emacs/0/29/0/lisp/org/)], Eli Zaretskii, 2023/09/06
- Re: bug#65734: [BUG] kill-whole-line on folded subtrees [9.6.8 (release_9.6.8-3-g21171d @ /home/w/usr/emacs/0/29/0/lisp/org/)], Ihor Radchenko, 2023/09/07
- Re: bug#65734: [BUG] kill-whole-line on folded subtrees [9.6.8 (release_9.6.8-3-g21171d @ /home/w/usr/emacs/0/29/0/lisp/org/)], Eli Zaretskii, 2023/09/07
- Re: bug#65734: [BUG] kill-whole-line on folded subtrees [9.6.8 (release_9.6.8-3-g21171d @ /home/w/usr/emacs/0/29/0/lisp/org/)], Sebastian Miele, 2023/09/07