From: Stefan Kangas <stefan@marxist.se>
To: Eli Zaretskii <eliz@gnu.org>
Cc: ynyaaa@gmail.com, 46316-done@debbugs.gnu.org
Subject: bug#46316: 27.1; wrong horizontal scroll with truncate-lines value t
Date: Fri, 9 Apr 2021 11:59:26 -0500 [thread overview]
Message-ID: <CADwFkmm1jO61Bw8f18n-Vg1hAyMPW_SWyczGAbGAi4=cwVn0EA@mail.gmail.com> (raw)
In-Reply-To: <837dnabi1r.fsf@gnu.org> (Eli Zaretskii's message of "Sun, 14 Feb 2021 20:50:08 +0200")
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.
prev parent reply other threads:[~2021-04-09 16:59 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-05 5:08 bug#46316: 27.1; wrong horizontal scroll with truncate-lines value t ynyaaa
2021-02-06 13:01 ` Eli Zaretskii
2021-02-07 15:28 ` ynyaaa
2021-02-07 15:34 ` Eli Zaretskii
2021-02-07 18:54 ` ynyaaa
2021-02-07 19:10 ` Eli Zaretskii
2021-02-12 15:41 ` ynyaaa
2021-02-13 15:30 ` Eli Zaretskii
2021-02-14 15:43 ` ynyaaa
2021-02-14 18:50 ` Eli Zaretskii
2021-04-09 16:59 ` Stefan Kangas [this message]
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