Public bug reported:

As stated on https://facebook.github.io/zstd/

"Zstandard is a real-time compression algorithm, providing high
compression ratios. It offers a very wide range of compression / speed
trade-off, while being backed by a very fast decoder".

Other Linux distributions even started to use the Zstandard in the place
of xz compression for their packages due to how fast the decompression
is, even if there is a small penalty on ratio. On my own testing, I
noticed 17% faster compression and 88% faster decompression compared to
xz while there was a 3% differences on compression ratio for system
images.

With this bug report, I ask to add support for Zstandard on at least
file-roller. Currently, I have to use the command line tool zstd to work
with files compressed using Zstandard. On Thunar, *.zst files appear as
unknown and file-roller says there is no support for this file type.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: file-roller 3.32.2-1
Uname: Linux 4.19.93-041969 x86_64
ApportVersion: 2.20.11-0ubuntu15
Architecture: amd64
CurrentDesktop: XFCE
Date: Thu Jan  9 22:59:56 2020
InstallationDate: Installed on 2017-06-13 (940 days ago)
InstallationMedia: Xubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
SourcePackage: file-roller
UpgradeStatus: Upgraded to focal on 2019-12-22 (18 days ago)
mtime.conffile..etc.apport.crashdb.conf: 2019-08-29T08:39:36.787240

** Affects: file-roller (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug focal

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https://bugs.launchpad.net/bugs/1859113

Title:
  No support for Zstandard

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