From: Paul Eggert <eggert@cs.ucla.edu>
To: Stefan Monnier <monnier@iro.umontreal.ca>,
Angelo Graziosi <angelo.g0@libero.it>
Cc: emacs-devel@gnu.org
Subject: Re: Zipped image file
Date: Sat, 7 Sep 2019 10:15:29 -0700 [thread overview]
Message-ID: <745e3ac2-b952-b74d-4822-b1a9a035cd54@cs.ucla.edu> (raw)
In-Reply-To: <jwv4l1okwh6.fsf-monnier+emacs@gnu.org>
[-- Attachment #1: Type: text/plain, Size: 542 bytes --]
On 9/7/19 7:36 AM, Stefan Monnier wrote:
> is there
> a good reason to bzip-compress a .png file?
Although typically bzip2 doesn't compress .png files well, there are
counterexamples such as the attached contrived file which has an 878:1
compression ratio.
PS. Watch out, it's a torture-test image. If you uncompress it and view it,
older versions of Emacs will crash and newer versions show only a placeholder
box, ImagickMagick's "display" program dumps core, Firefox displays it only at
lower resolution while chewing up CPU, etc.)
[-- Attachment #2: s.png.bz2 --]
[-- Type: application/x-bzip, Size: 297 bytes --]
prev parent reply other threads:[~2019-09-07 17:15 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-06 21:04 Zipped image file Angelo Graziosi
2019-09-06 21:24 ` Paul Eggert
2019-09-06 22:59 ` Angelo Graziosi
2019-09-07 10:21 ` Eli Zaretskii
2019-09-07 10:39 ` Paul Eggert
2019-09-07 11:05 ` Eli Zaretskii
2019-09-07 12:03 ` Paul Eggert
2019-09-07 12:14 ` Eli Zaretskii
2019-09-07 12:34 ` Eli Zaretskii
2019-09-07 11:49 ` Angelo Graziosi
2019-09-07 14:36 ` Stefan Monnier
2019-09-07 17:15 ` Paul Eggert [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://www.gnu.org/software/emacs/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=745e3ac2-b952-b74d-4822-b1a9a035cd54@cs.ucla.edu \
--to=eggert@cs.ucla.edu \
--cc=angelo.g0@libero.it \
--cc=emacs-devel@gnu.org \
--cc=monnier@iro.umontreal.ca \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.savannah.gnu.org/cgit/emacs.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).