GNU bug report logs - #43017
27.1; Screen display error

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Yu Fang <quanyu.fang <at> gmail.com>
Subject: bug#43017: closed (Re: bug#43017: 27.1; Screen display error)
Date: Mon, 24 Aug 2020 19:52:02 +0000

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Your bug report

#43017: 27.1; Screen display error

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 43017 <at> debbugs.gnu.org.

-- 
43017: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=43017
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Alan Third <alan <at> idiocy.org>
To: Yu Fang <quanyu.fang <at> gmail.com>
Cc: 43017-done <at> debbugs.gnu.org
Subject: Re: bug#43017: 27.1; Screen display error
Date: Mon, 24 Aug 2020 21:51:46 +0200 (CEST)

On Mon, Aug 24, 2020 at 05:30:19PM +0800, Yu Fang wrote:
> While moving cursor in frame, part or whole frame will become
> blank. Emacs 26 have same bug, Emacs 25 is ok.

Unfortunately this is due to a change in macOS 10.14 which took us a
very long time to work out.

Emacs 28 has a fix, but for Emacs 27 I'm afraid you'll just have to
force the screen to redraw whenever it happens.
-- 
Alan Third

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From: Yu Fang <quanyu.fang <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 27.1; Screen display error
Date: Mon, 24 Aug 2020 17:30:19 +0800

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--text follows this line--
While moving cursor in frame, part or whole frame will become
blank. Emacs 26 have same bug, Emacs 25 is ok.





In GNU Emacs 27.1 (build 1, x86_64-apple-darwin18.7.0, NS appkit-1671.60
Version 10.14.6 (Build 18G95))
 of 2020-08-12 built on builder10-14.porkrind.org
Windowing system distributor 'Apple', version 10.3.1894
System Description:  Mac OS X 10.15.5

Recent messages:
Wrote /Users/fangyu/.eshell/alias
Saving file /Users/fangyu/.eshell/alias...
Wrote /Users/fangyu/.eshell/alias
[yas] Prepared just-in-time loading of snippets successfully.
For information about GNU Emacs and the GNU system, type C-h C-a.
Package cl is deprecated
next-line: End of buffer
auto trimmed 0 chars
next-line: End of buffer [5 times]
<right-fringe> <drag-mouse-1> is undefined


Configured using:
 'configure --with-ns '--enable-locallisppath=/Library/Application
 Support/Emacs/${version}/site-lisp:/Library/Application
 Support/Emacs/site-lisp' --with-modules'

Configured features:
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THREADS JSON PDUMPER

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Load-path shadows:
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Memory information:
((conses 16 364570 261463)
 (symbols 48 35491 6)
 (strings 32 107884 27462)
 (string-bytes 1 3710839)
 (vectors 16 53606)
 (vector-slots 8 729597 204068)
 (floats 8 406 572)
 (intervals 56 508 520)
 (buffers 1000 14))

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