GNU bug report logs - #63187
30.0.50; Tail of longer lines painted after end of nearby lines on macOS

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Message #38 received at 63187 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Po Lu <luangruo <at> yahoo.com>
Cc: 63187 <at> debbugs.gnu.org, aaronjensen <at> gmail.com
Subject: Re: bug#63187: 30.0.50;
 Tail of longer lines painted after end of nearby lines on macOS
Date: Mon, 01 May 2023 15:40:36 +0300

> Cc: 63187 <at> debbugs.gnu.org
> Date: Mon, 01 May 2023 07:58:26 +0800
> From:  Po Lu via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs <at> gnu.org>
> 
> Aaron Jensen <aaronjensen <at> gmail.com> writes:
> 
> > Is there anything specific to macOS that is involved in scrolling optimization?
> 
> Yes, Apple deleted the API used to perform bit blits, so Emacs uses a
> workaround that I don't really understand, and seems unreliable.

You mean, ns_scroll_run in nsterm.m?  Which parts of it do you not
understand?

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