From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Eli Zaretskii <eliz@gnu.org>
Cc: luangruo@yahoo.com, mwd@md5i.com, emacs-devel@gnu.org
Subject: Re: Redisplay resets vscroll when window start changes
Date: Fri, 19 Nov 2021 13:07:32 -0500 [thread overview]
Message-ID: <jwvk0h4auoc.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <83k0h4wrbi.fsf@gnu.org> (Eli Zaretskii's message of "Fri, 19 Nov 2021 09:13:53 +0200")
Eli Zaretskii [2021-11-19 09:13:53] wrote:
> The current code is not prepared to deal with test cases like that
> one. The current Emacs code never sets vscroll unless we are moving
> through a tall line, so resetting vscroll as part of previous-line is
> a no-op when there's no tall lines in sight, and is not doing any
> harm. The test case was produced by a feature not yet in Emacs, and
> so I'm saying that such a feature needs its own variant of
> previous-line.
But to the extent than this feature does not intend to change the
behavior of `previous-line`, this new variant of `previous-line` should
ideally do everything exactly like the current `previous-line`, except
be more careful not to reset vscroll, right?
So, ideally this new version could also be used when that new feature
isn't used?
Stefan
next prev parent reply other threads:[~2021-11-19 18:07 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <87k0h9pp7t.fsf.ref@yahoo.com>
2021-11-15 12:39 ` Redisplay resets vscroll when window start changes Po Lu
2021-11-15 12:44 ` Po Lu
2021-11-15 14:18 ` Eli Zaretskii
2021-11-16 0:02 ` Po Lu
2021-11-16 12:51 ` Eli Zaretskii
2021-11-16 12:54 ` Po Lu
2021-11-16 13:01 ` Po Lu
2021-11-16 13:34 ` Eli Zaretskii
2021-11-16 13:38 ` Po Lu
2021-11-16 13:45 ` Eli Zaretskii
2021-11-16 17:12 ` Michael Welsh Duggan
2021-11-16 18:31 ` Eli Zaretskii
2021-11-17 3:24 ` Stefan Monnier
2021-11-17 13:34 ` Eli Zaretskii
2021-11-17 0:26 ` Po Lu
2021-11-17 3:31 ` Eli Zaretskii
2021-11-17 3:40 ` Stefan Monnier
2021-11-17 13:40 ` Eli Zaretskii
2021-11-17 20:40 ` Stefan Monnier
2021-11-18 6:36 ` Eli Zaretskii
2021-11-19 3:17 ` Stefan Monnier
2021-11-19 7:13 ` Eli Zaretskii
2021-11-19 18:07 ` Stefan Monnier [this message]
2021-11-19 18:43 ` Eli Zaretskii
2021-11-17 4:31 ` Po Lu
2021-11-17 7:45 ` Eli Zaretskii
2021-11-17 0:21 ` Po Lu
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