Version: (using KDE 4.3.2) Installed from: Ubuntu Packages Ark currently supports tar.gz and tar.bz2 formats natively as follows: 1. it is available in the Compress To dialog when selecting compressed file type 2. upon opening a tar.gz, tgz, tar.bz2 or tbz2 file, Ark automatically shows the contents of the underlying tar archive and does not dumbly merely show the tar archive alone. etc. Similarly, tar.xz and txz files should be equally supported natively by making it available in the Compress To dialog and by automatically showing the contents of the underlying tar file and wherever else it is required. This native support is important to support the increasing importance given to tar.xz by developers and end-users, as seen in the adoption of tar.xz by the GNU coreutils and (that of xz compression) by Fedora RPM.
What version of the shared-mime-info package do you have?
On my Kubuntu Karmic Koala system: 0.70-0ubuntu1 Apparently according to http://www.freedesktop.org/wiki/Software/shared-mime-info 0.70 is indeed the latest version. But how does that matter? I'm asking for Ark to support a certain functionality and it should be coded into Ark source code and not in some other software. BTW currently opening a tar.xz file for me in Ark 4.3.2 shows the underlying tar file and then I have to double click on that to see the contents of the tar. This two-time opening is not required for tar.gz or tar.bz2 files. What I am asking for is that by just opening the tar.xz file I must be able to see the actual contents which *I want to see*. Also I must be able to directly compress to tar.xz just like I am able to compress to tar.gz or tar.bz2 directly. I hope I am not missing anything else which I should ask for.
SVN commit 1067163 by rkcosta: Add support for the application/x-xz-compressed-tar mimetype. BUG: 218929 M +1 -1 app/ark.desktop M +1 -1 app/ark_dndextract.desktop M +1 -1 app/ark_servicemenu.desktop M +1 -1 plugins/libarchive/kerfuffle_libarchive.desktop WebSVN link: http://websvn.kde.org/?view=rev&revision=1067163
SVN commit 1067164 by rkcosta: Backport r1067163. Add support for the application/x-xz-compressed-tar mimetype. CCBUG: 218929 M +1 -1 app/ark.desktop M +1 -1 app/ark_dndextract.desktop M +1 -1 app/ark_servicemenu.desktop M +1 -1 plugins/libarchive/kerfuffle_libarchive.desktop WebSVN link: http://websvn.kde.org/?view=rev&revision=1067164
*** Bug 229036 has been marked as a duplicate of this bug. ***