--- Begin Message ---
|
Subject: |
27.1; wrong horizontal scroll with truncate-lines value t |
|
Date: |
Fri, 05 Feb 2021 14:08:06 +0900 |
(1) When isearch fails after last match
Evaluate the form below and type 'C-s a C-s', then emacs messages
'Failing I-search: a' and the buffer scrolls back left and the current
point is out of the window.
Type C-s again, and overwrapped search succeeds at the same point,
but the matched point is still out of the window.
(let ((buf (generate-new-buffer "tmp")))
(switch-to-buffer buf)
(setq truncate-lines t)
(dotimes (i 100) (insert (format "%d\n" i)))
(insert-char ?x 200)
(insert ?a)
(goto-char (point-min)))
(2) When image-toggle-display
Evaluate the form below, then the SVG image is displayed.
Type 'C-c C-c' to view the source text and type 'C-c C-c' again to view
the image, then the buffer keeps scrolled right and the image is hidden
out of the window.
Type C-a and the image is shown, type 'C-c C-c' to view the source text
again, then the buffer keeps scrolled left and the current point is out
of the window.
(let ((buf (generate-new-buffer "tmp"))
(svg "<svg width=\"80\" height=\"80\" version=\"1.1\"\
xmlns=\"http://www.w3.org/2000/svg\"\
xmlns:xlink=\"http://www.w3.org/1999/xlink\";>\
<rect width=\"80\" height=\"80\" x=\"0\" y=\"0\" fill=\"blue\"></rect>\
</svg>"))
(switch-to-buffer buf)
(setq truncate-lines t)
(insert svg)
(image-mode))
In GNU Emacs 27.1 (build 1, x86_64-w64-mingw32)
of 2020-08-22 built on CIRROCUMULUS
Repository revision: 86d8d76aa36037184db0b2897c434cdaab1a9ae8
Repository branch: HEAD
Windowing system distributor 'Microsoft Corp.', version 10.0.18363
System Description: Microsoft Windows 10 Pro (v10.0.1909.18363.1316)
Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Loading c:/home/yagi/.emacs.d/minimal-init.el (source)...
Loading term/bobcat...done
Loading c:/home/yagi/.emacs.d/minimal-init.el (source)...done
Configured using:
'configure --without-dbus --host=x86_64-w64-mingw32
--without-compress-install 'CFLAGS=-O2 -static''
Configured features:
XPM JPEG TIFF GIF PNG RSVG SOUND NOTIFY W32NOTIFY ACL GNUTLS LIBXML2
HARFBUZZ ZLIB TOOLKIT_SCROLL_BARS MODULES THREADS JSON PDUMPER LCMS2 GMP
Important settings:
value of $LANG: JPN
locale-coding-system: cp932
Major mode: Lisp Interaction
Minor modes in effect:
tooltip-mode: t
global-eldoc-mode: t
eldoc-mode: t
electric-indent-mode: t
mouse-wheel-mode: t
tool-bar-mode: t
menu-bar-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
font-lock-mode: t
blink-cursor-mode: t
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
line-number-mode: t
transient-mark-mode: t
Load-path shadows:
None found.
Features:
(shadow sort mail-extr emacsbug message rmc puny dired dired-loaddefs
format-spec rfc822 mml easymenu mml-sec password-cache epa derived epg
epg-config gnus-util rmail rmail-loaddefs text-property-search time-date
subr-x seq byte-opt gv bytecomp byte-compile cconv mm-decode mm-bodies
mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader cl-loaddefs
cl-lib sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils
term/bobcat japan-util tooltip eldoc electric uniquify ediff-hook
vc-hooks lisp-float-type mwheel dos-w32 ls-lisp disp-table term/w32-win
w32-win w32-vars term/common-win tool-bar dnd fontset image regexp-opt
fringe tabulated-list replace newcomment text-mode elisp-mode lisp-mode
prog-mode register page tab-bar menu-bar rfn-eshadow isearch timer
select scroll-bar mouse jit-lock font-lock syntax facemenu font-core
term/tty-colors frame minibuffer cl-generic cham georgian utf-8-lang
misc-lang vietnamese tibetan thai tai-viet lao korean japanese eucjp-ms
cp51932 hebrew greek romanian slovak czech european ethiopic indian
cyrillic chinese composite charscript charprop case-table epa-hook
jka-cmpr-hook help simple abbrev obarray cl-preloaded nadvice loaddefs
button faces cus-face macroexp files text-properties overlay sha1 md5
base64 format env code-pages mule custom widget hashtable-print-readable
backquote threads w32notify w32 lcms2 multi-tty make-network-process
emacs)
Memory information:
((conses 16 49564 9493)
(symbols 48 6091 1)
(strings 32 16912 1998)
(string-bytes 1 523773)
(vectors 16 10730)
(vector-slots 8 208731 12936)
(floats 8 21 314)
(intervals 56 225 0)
(buffers 1000 11))
--- End Message ---
--- Begin Message ---
|
Subject: |
Re: bug#46316: 27.1; wrong horizontal scroll with truncate-lines value t |
|
Date: |
Fri, 9 Apr 2021 11:59:26 -0500 |
|
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
Eli Zaretskii <eliz@gnu.org> writes:
>> From: ynyaaa@gmail.com
>> Cc: 46316@debbugs.gnu.org
>> Date: Mon, 15 Feb 2021 00:43:32 +0900
>>
>> >> (let ((buf (generate-new-buffer "tmp")))
>> >> (switch-to-buffer buf)
>> >> (setq truncate-lines t)
>> >> (dotimes (i 200)
>> >> (insert (format ":%03d" i))
>> >> (when (= 0 (% (1+ i) 100)) (insert ?\n)))
>> >> (forward-char -1)
>> >> (sit-for 1)
>> >> (set-window-hscroll nil (window-hscroll))
>> >> (save-excursion
>> >> (forward-char -100)
>> >> (insert-char ?\n 10)
>> >> ))
>> >
>> > Sorry, I don't think I follow: what exactly is the bug here? What did
>> > you expect to happen ,and what did actually happen?
>>
>> The expression '(set-window-hscroll nil (window-hscroll))' should not
>> have any effect
>
> That's not true: calling set-window-hscroll inhibits automatic
> hscrolling, until point moves for some reason.
>
>> but if it is deleted from the form, auto-hscroll-mode works
>> correctly.
>
> I think this is expected: the text your recipe adds is not around
> point, so we don't re-enable auto-hscroll.
>
>> Not only point motion but also buffer modification should be checked for
>> auto-hscroll-mode.
>
> If you want this to happen, don't call set-window-hscroll.
This was tagged notabug and Eli explained that the behavior is
expected. The bug that was here has been fixed.
There also has been no further update within 7 weeks.
I'm therefore closing this bug report.
--- End Message ---