[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
bug#38407: 27.0.50; infinite loop with display of large file without new
From: |
Pieter van Oostrum |
Subject: |
bug#38407: 27.0.50; infinite loop with display of large file without newlines |
Date: |
Thu, 28 Nov 2019 07:51:33 +0100 |
Phil Sainty wrote:
> On 2019-11-28 10:52, Pieter van Oostrum wrote:
> > I used a 100KB json file from my Firefox profile
>
> Out of interest I went looking for large JSON files in my own Firefox
> profiles, and the largest one I could find was an "extensions.json"
> which was also roughly 100K. Curiously enough, everything was indeed
> dramatically slower than normal in that buffer, even in so-long-mode.
>
> I also observed that many different human languages were present in
> the text, so I thought that bi-directional text processing might be a
> factor -- and indeed setting the debug option bidi-display-reordering
> to nil in that buffer made a *very* dramatic improvement to
> performance.
>
> Similarly, performance was good after using M-x find-file-literally
> to visit the file.
>
> I am guessing that this is also what is happening for you?
It was exactly that file that caused the problem. I copied it to a .txt file to
see if the problem might have been caused by the Javascript mode, and it didn't
make any difference.
Normally I wouldn't open such a bizarre file, but I was doing an 'rgrep' on my
home directory, and this was one of the files that came up in the grep results.
When I was scrolling though the *grep* buffer, I got this problem. Then I
decided to just open the file, to eliminate the possibility that grep-mode was
one of the causes.
And yes, I checked it all with emacs -Q.
I forgot to mention that when I set debug-on-quit, a Quit indicated Emacs was
in redisplay_internal.
--
Pieter van Oostrum <pieter@vanoostrum.org>
www: http://pieter.vanoostrum.org/
PGP key: [8DAE142BE17999C4]
- bug#38407: 27.0.50; infinite loop with display of large file without newlines, Pieter van Oostrum, 2019/11/27
- bug#38407: 27.0.50; infinite loop with display of large file without newlines, Phil Sainty, 2019/11/27
- bug#38407: 27.0.50; infinite loop with display of large file without newlines, Phil Sainty, 2019/11/27
- bug#38407: 27.0.50; infinite loop with display of large file without newlines, Phil Sainty, 2019/11/27
- bug#38407: 27.0.50; infinite loop with display of large file without newlines,
Pieter van Oostrum <=
- bug#38407: 27.0.50; infinite loop with display of large file without newlines, Eli Zaretskii, 2019/11/28
- bug#38407: 27.0.50; infinite loop with display of large file without newlines, Pieter van Oostrum, 2019/11/28
- bug#38407: 27.0.50; infinite loop with display of large file without newlines, Eli Zaretskii, 2019/11/28
- bug#38407: 27.0.50; infinite loop with display of large file without newlines, Pieter van Oostrum, 2019/11/28
- bug#38407: 27.0.50; infinite loop with display of large file without newlines, Eli Zaretskii, 2019/11/29
- bug#38407: 27.0.50; infinite loop with display of large file without newlines, Phil Sainty, 2019/11/29
- bug#38407: 27.0.50; infinite loop with display of large file without newlines, Eli Zaretskii, 2019/11/29
- bug#38407: 27.0.50; infinite loop with display of large file without newlines, Dmitry Gutov, 2019/11/29
- bug#38407: 27.0.50; infinite loop with display of large file without newlines, Eli Zaretskii, 2019/11/29
- bug#38407: 27.0.50; infinite loop with display of large file without newlines, Dmitry Gutov, 2019/11/29