GNU bug report logs - #63201
`scroll-margin' sometimes doesn't work

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

From: Shynur Xie <one.last.kiss <at> outlook.com>
To: "bug-gnu-emacs <at> gnu.org" <bug-gnu-emacs <at> gnu.org>
Subject: `scroll-margin' sometimes doesn't work
Date: Mon, 1 May 2023 10:45:11 +0000

`scroll-margin' sometimes doesn't work

1. emacs -Q
2. In buffer *scratch*, C-x C-e:
    (progn
      (custom-set-variables
       '(custom-enabled-themes '(modus-vivendi))
       '(global-tab-line-mode t)
       '(scroll-margin 1)
       '(scroll-conservatively 101))
      (info-emacs-manual)
      (end-of-buffer)
      (goto-line 500))
3. With the cursor now at the 2nd line from the top of the window,
   press <up>-arrow-key several times and pay attention to resulting
   cursor position -- `scroll-margin' is 1 but Emacs still sometimes
   allows the cursor to stay at the 1st line of the window.

I uploaded a GIF at <https://emacs.stackexchange.com/questions/76649>
to show this behavior.

--
shynur

Message #8 received at 63201 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Shynur Xie <one.last.kiss <at> outlook.com>
Cc: 63201 <at> debbugs.gnu.org
Subject: Re: bug#63201: `scroll-margin' sometimes doesn't work
Date: Mon, 01 May 2023 15:28:55 +0300

> From: Shynur Xie <one.last.kiss <at> outlook.com>
> Date: Mon, 1 May 2023 10:45:11 +0000
> msip_labels: 
> 
> `scroll-margin' sometimes doesn't work
> 
> 1. emacs -Q
> 2. In buffer *scratch*, C-x C-e:
>     (progn
>       (custom-set-variables
>        '(custom-enabled-themes '(modus-vivendi))
>        '(global-tab-line-mode t)
>        '(scroll-margin 1)
>        '(scroll-conservatively 101))
>       (info-emacs-manual)
>       (end-of-buffer)
>       (goto-line 500))
> 3. With the cursor now at the 2nd line from the top of the window,
>    press <up>-arrow-key several times and pay attention to resulting
>    cursor position -- `scroll-margin' is 1 but Emacs still sometimes
>    allows the cursor to stay at the 1st line of the window.

Thanks, should be fixed now on the emacs-29 branch.

Message #13 received at 63201-done <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: one.last.kiss <at> outlook.com
Cc: 63201-done <at> debbugs.gnu.org
Subject: Re: bug#63201: `scroll-margin' sometimes doesn't work
Date: Fri, 05 May 2023 08:48:31 +0300

> Cc: 63201 <at> debbugs.gnu.org
> Date: Mon, 01 May 2023 15:28:55 +0300
> From: Eli Zaretskii <eliz <at> gnu.org>
> 
> > From: Shynur Xie <one.last.kiss <at> outlook.com>
> > Date: Mon, 1 May 2023 10:45:11 +0000
> > msip_labels: 
> > 
> > `scroll-margin' sometimes doesn't work
> > 
> > 1. emacs -Q
> > 2. In buffer *scratch*, C-x C-e:
> >     (progn
> >       (custom-set-variables
> >        '(custom-enabled-themes '(modus-vivendi))
> >        '(global-tab-line-mode t)
> >        '(scroll-margin 1)
> >        '(scroll-conservatively 101))
> >       (info-emacs-manual)
> >       (end-of-buffer)
> >       (goto-line 500))
> > 3. With the cursor now at the 2nd line from the top of the window,
> >    press <up>-arrow-key several times and pay attention to resulting
> >    cursor position -- `scroll-margin' is 1 but Emacs still sometimes
> >    allows the cursor to stay at the 1st line of the window.
> 
> Thanks, should be fixed now on the emacs-29 branch.

No further comments, so I assume the bug is indeed fixed, and I'm
closing it.

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