[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
bug#53220: 27.2; scroll-up moves point +1 if text has display property
From: |
Eli Zaretskii |
Subject: |
bug#53220: 27.2; scroll-up moves point +1 if text has display property |
Date: |
Thu, 13 Jan 2022 14:26:19 +0200 |
tags 53220 wontfix
close 53220
thanks
> From: awrhygty@outlook.com
> Date: Thu, 13 Jan 2022 03:07:51 +0900
>
>
> Evaluate the form below and type 'C-v', the current point moves next to
> the beginning of line.
> Similarly, if the current point is at the window-start and type 'M-v',
> the buffer scrolls down and the point moves next to the original position.
>
> (let ((buf (generate-new-buffer "tmp"))
> (line (propertize "A" 'display "B")))
> (switch-to-buffer buf)
> (dotimes (i 100)
> (insert line ?\n))
> (goto-char (point-min)))
Preserving the column by scrolling commands is tricky in the presence
of display properties. I fixed the C-v case (at least partially),
because it was a low-hanging fruit. But the general solution, if it's
at all possible, is too complicated, and I see no reason to jump
through hoops for such obscure use cases. We try very hard to
preserve the column during C-n/C-p, and that should be enough.
So I'm closing this bug report.