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bug#66216: 28.2; scroll-up-line doesn't work if there is a before-string
From: |
Eli Zaretskii |
Subject: |
bug#66216: 28.2; scroll-up-line doesn't work if there is a before-string overlay with newline |
Date: |
Fri, 29 Sep 2023 18:28:12 +0300 |
> Date: Fri, 29 Sep 2023 13:53:04 +0200
> Cc: 66216@debbugs.gnu.org
> From: Herman, Géza <geza.herman@gmail.com>
>
> I have scroll-up/down-line mapped to a key. I'd like to see that if I
> press and hold these keys, Emacs can scroll continuously. It doesn't
> matter too much if at some position, it jumps 2 (or more) visible lines.
> Using prefix arguments is not a good solution for this case, because if
> I have a buffer with a lot of such overlays (like magit's blame buffer),
> it's very inconvenient that emacs stops very frequently, and then I have
> to nag it with a prefix argument to "please scroll further". But of
> course I can try to write some elisp function to work around this
> limitation.
I explained why catering only to this preference will bring us other
problems.
One solution is for you to write a simple function that scrolls by
more than 1 line if the basic scroll didn't change window-start
position.
And if this is a problem with Magit, then I would suggest that Magit
has its own scrolling function to overcome the problems. I tried to
explain many times that using overlays and display properties in Magit
buffers was a bad idea, and the Magit developer even agreed with me at
some point.
> As scroll-down-line jumps over overlays, so it already scrolls 2 visible
> lines in the mentioned case, it would make sense that scroll-up-line
> behaves the same as well. The current behavior is not consistent. I'd
> expect that if scroll-down-line moves window start somewhere, then
> scroll-up-line will undo this. But in this case scroll-down-line will
> move 2 lines, then scroll-up-line doesn't do anything.
The situation with scroll-down and scroll-up is not symmetric.
- bug#66216: 28.2; scroll-up-line doesn't work if there is a before-string overlay with newline, Herman, 2023/09/26
- bug#66216: 28.2; scroll-up-line doesn't work if there is a before-string overlay with newline, Eli Zaretskii, 2023/09/29
- bug#66216: 28.2; scroll-up-line doesn't work if there is a before-string overlay with newline, Herman, 2023/09/29
- bug#66216: 28.2; scroll-up-line doesn't work if there is a before-string overlay with newline,
Eli Zaretskii <=
- bug#66216: 28.2; scroll-up-line doesn't work if there is a before-string overlay with newline, Herman, 2023/09/30
- bug#66216: 28.2; scroll-up-line doesn't work if there is a before-string overlay with newline, Eli Zaretskii, 2023/09/30
- bug#66216: 28.2; scroll-up-line doesn't work if there is a before-string overlay with newline, Herman, 2023/09/30
- bug#66216: 28.2; scroll-up-line doesn't work if there is a before-string overlay with newline, Eli Zaretskii, 2023/09/30
- bug#66216: 28.2; scroll-up-line doesn't work if there is a before-string overlay with newline, Herman, 2023/09/30