Lars Ingebrigtsen <larsi@HIDDEN>
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From: Lars Ingebrigtsen <larsi@HIDDEN>
To: Bodertz <bodertz@HIDDEN>
Subject: Re: bug#45947: 28.0.50; comment-dwim and undo in active region
References: <87wnwabxjw.fsf@HIDDEN>
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Date: Tue, 07 Jun 2022 16:14:47 +0200
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Content preview: Bodertz <bodertz@HIDDEN> writes: > Undoing with an active
region does not always work as expected if > `comment-dwim' is used. From
emacs -Q: > > 1. Create a new buffer (C-x b new-buffer RET) > > 2. Insert
A, B, and C on seperate lin [...]
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Bodertz <bodertz@HIDDEN> writes:
> Undoing with an active region does not always work as expected if
> `comment-dwim' is used. From emacs -Q:
>
> 1. Create a new buffer (C-x b new-buffer RET)
>
> 2. Insert A, B, and C on seperate lines as below
> ('*' represents point)
>
> A
> B
> C*
>
> 3. Create an active region over the last two lines (C-SPC C-p C-a)
> 4. Use comment-dwim (M-; ; RET)
> 5. Create an active region over the last two lines (C-SPC M->)
> 6. Undo (C-/):
>
> A
> ; *
> ; C
(I'm going through old bug reports that unfortunately weren't resolved
at the time.)
I can reproduce this in Emacs 29, too. I wonder whether it's related to
bug#21523 -- it, too, mis-computes the active region at the edges and
includes the wrong thing.
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
bug-gnu-emacs@HIDDEN:bug#45947; Package emacs.
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From: Bodertz <bodertz@HIDDEN>
To: bug-gnu-emacs@HIDDEN
Subject: 28.0.50; comment-dwim and undo in active region
Date: Sun, 17 Jan 2021 22:53:39 -0700
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Undoing with an active region does not always work as expected if
`comment-dwim' is used. From emacs -Q:
1. Create a new buffer (C-x b new-buffer RET)
2. Insert A, B, and C on seperate lines as below
('*' represents point)
A
B
C*
3. Create an active region over the last two lines (C-SPC C-p C-a)
4. Use comment-dwim (M-; ; RET)
5. Create an active region over the last two lines (C-SPC M->)
6. Undo (C-/):
A
; *
; C
7. Undo again (C-/):
A
;*
; C
8. Undo again (C-/):
A
*
; C
In GNU Emacs 28.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.23, cairo version 1.16.0)
Windowing system distributor 'System Description: openSUSE Tumbleweed
Configured using:
'configure
CONFIG_SHELL=/gnu/store/pwcp239kjf7lnj5i4lkdzcfcxwcfyk72-bash-minimal-5.0.16/bin/bash
SHELL=/gnu/store/pwcp239kjf7lnj5i4lkdzcfcxwcfyk72-bash-minimal-5.0.16/bin/bash
--prefix=/gnu/store/k327dvhl6d897r3jz7gyhdyf0rdvdarh-emacs-next-pgtk-28.0.50-0.d46a223
--enable-fast-install --with-pgtk --with-xwidgets --with-modules
--with-cairo --disable-build-details'
Bodertz <bodertz@HIDDEN>:bug-gnu-emacs@HIDDEN.
Full text available.bug-gnu-emacs@HIDDEN:bug#45947; Package emacs.
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