From: Joseph Turner via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
To: 69972@debbugs.gnu.org
Subject: bug#69972: 29.1; Unexpected behavior when scrolling images
Date: Sun, 24 Mar 2024 02:07:16 -0700 [thread overview]
Message-ID: <87sf0gm1xn.fsf@ushin.org> (raw)
When the image at point is larger than the current window and there is
no content after the image, interactively scrolling down (with the
scroll-up command) unexpectedly scrolls past the image to blankness.
Test this by evaluating the following snippet then interactively running
`scroll-up' repeatedly:
(with-current-buffer (get-buffer-create "*test-scroll-image*")
(erase-buffer)
(insert-image (create-image "splash.png" nil nil
;; Scale the image more if it doesn't take up the whole window.
:scale 5))
(goto-char (point-max))
(pop-to-buffer (current-buffer)))
Even more unexpectedly, when point is before the image, running
`scroll-up' repeatedly eventually scrolls back to the top of the image:
(with-current-buffer (get-buffer-create "*test-scroll-image*")
(erase-buffer)
(insert-image (create-image "splash.png" nil nil :scale 5))
(goto-char (point-min))
(pop-to-buffer (current-buffer)))
Non-interactively, scroll-up scrolls the page down to the very bottom of
the image. IMO this is the expected behavior:
(with-current-buffer (get-buffer-create "*test-scroll-image*")
(erase-buffer)
(insert-image (create-image "splash.png" nil nil :scale 5))
(pop-to-buffer (current-buffer))
(scroll-up 999))
Thank you for your help!!
Joseph
Tested on emacs -Q:
In GNU Emacs 29.1 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.37,
cairo version 1.16.0)
Windowing system distributor 'The X.Org Foundation', version 11.0.12101007
System Description: Debian GNU/Linux 12 (bookworm)
Configured using:
'configure
CONFIG_SHELL=/gnu/store/v9p25q9l5nnaixkhpap5rnymmwbhf9rp-bash-minimal-5.1.16/bin/bash
SHELL=/gnu/store/v9p25q9l5nnaixkhpap5rnymmwbhf9rp-bash-minimal-5.1.16/bin/bash
--prefix=/gnu/store/f4gxh8n3libmywq8d5jvxxkyqblgilxy-emacs-29.1
--enable-fast-install --with-cairo --with-modules
--with-native-compilation=aot --disable-build-details'
Configured features:
ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GPM GSETTINGS HARFBUZZ JPEG
JSON LCMS2 LIBOTF LIBSELINUX LIBSYSTEMD LIBXML2 M17N_FLT MODULES
NATIVE_COMP NOTIFY INOTIFY PDUMPER PNG RSVG SECCOMP SOUND SQLITE3
THREADS TIFF TOOLKIT_SCROLL_BARS TREE_SITTER X11 XDBE XIM XINPUT2 XPM
GTK3 ZLIB
next reply other threads:[~2024-03-24 9:07 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-24 9:07 Joseph Turner via Bug reports for GNU Emacs, the Swiss army knife of text editors [this message]
2024-03-24 9:42 ` bug#69972: 29.1; Unexpected behavior when scrolling images Eli Zaretskii
2024-03-25 1:06 ` Joseph Turner via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-03-25 8:34 ` Joseph Turner via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-03-25 12:23 ` Eli Zaretskii
2024-03-25 19:43 ` Joseph Turner via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-03-28 6:24 ` Eli Zaretskii
2024-03-28 11:12 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
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