From: Po Lu <luangruo@yahoo.com>
To: dalanicolai <dalanicolai@gmail.com>
Cc: Emacs Devel <emacs-devel@gnu.org>
Subject: Re: Question about (excessive?) ram usage when many overlays (with large vscroll)
Date: Thu, 28 Apr 2022 20:06:51 +0800 [thread overview]
Message-ID: <87zgk5za1w.fsf@yahoo.com> (raw)
In-Reply-To: <CACJP=3k2Fa9rCWK_mJYbFy2OTk0VWM8DuV9152A=+W5+Ra_s8w@mail.gmail.com> (dalanicolai@gmail.com's message of "Thu, 28 Apr 2022 13:56:55 +0200")
dalanicolai <dalanicolai@gmail.com> writes:
> I have a question about this, namely: how to make a line the 'window
> start'? Using 'set-window-start` does not work.
>
> From 'emacs -Q' (which starts within the scratch buffer), immediately
> evaluate
>
> (set-window-start nil (point))
>
> to set the 'new' window start. Subsequently do
>
> (set-window-vscroll nil 1)
>
> it will scroll from the start of the buffer, and not from the 'new'
> window start as I would expect
That's because the point is obscured after the vscroll is applied, so
the display is recentered. You have to move point to some location that
is at least partially visible after the vscroll if you set
`make-cursor-line-fully-visible' to t, or a location that is fully
visible otherwise.
next prev parent reply other threads:[~2022-04-28 12:06 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-26 12:21 Question about (excessive?) ram usage when many overlays (with large vscroll) dalanicolai
2022-04-26 12:33 ` Eli Zaretskii
2022-04-26 13:24 ` Eli Zaretskii
2022-04-27 14:13 ` dalanicolai
2022-04-27 15:44 ` Eli Zaretskii
2022-04-27 17:13 ` Stefan Monnier
2022-04-27 17:18 ` Eli Zaretskii
2022-04-26 12:49 ` Po Lu
2022-04-27 14:01 ` dalanicolai
2022-04-28 11:56 ` dalanicolai
2022-04-28 12:06 ` Po Lu [this message]
2022-04-28 16:28 ` dalanicolai
2022-04-28 16:48 ` dalanicolai
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