GNU bug report logs - #65734
29.1.50; kill-whole-line and visibility of Org subtrees

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Ihor Radchenko <yantar92 <at> posteo.net>
Cc: 65734 <at> debbugs.gnu.org, manikulin <at> gmail.com, emacs-orgmode <at> gnu.org, monnier <at> iro.umontreal.ca, iota <at> whxvd.name
Subject: 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: Thu, 11 Jan 2024 18:05:35 +0200

> From: Ihor Radchenko <yantar92 <at> posteo.net>
> Cc: monnier <at> iro.umontreal.ca, emacs-orgmode <at> gnu.org, 65734 <at> debbugs.gnu.org,
>  manikulin <at> gmail.com, iota <at> whxvd.name
> Date: Thu, 11 Jan 2024 15:50:10 +0000
> 
> Eli Zaretskii <eliz <at> gnu.org> writes:
> 
> >> Then, we discussed that Emacs commands to not always provide enough
> >> toggles. So, I am asking to add one in this thread.
> >
> > I don't think I understand what kind of toggle are we talking about.
> 
> What I would like to request is a way to handle the following situation:
> 
> * Heading<... few hundreds of lines of invisible text>
> 
> If the user calls `kill-whole-line', a large part of the buffer will get
> deleted. We had complains from the users about accidentally deleting a
> lot of text in Org files in such situations.
> 
> So, I'd like some way to configure `kill-whole-line'/`kill-line' to warn
> user about killing hidden text when we detect that we are deleting a
> folded heading. Something like:
> 
>    (y-or-n-p "Kill hidden subtree along with headline? ")
> 
> I believe that it might be useful in other situations as well. Like in
> outline-mode or outline-minor-mode.

How would kill-line know that it's about to kill a subtree?  All it
knows is that it is killing some invisible text.

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