Apps know what tar.bz2 and tar.gz files are, but tar.xz are "unknown" for now Since tar.xz are likely to get common, this should be fixed shared-mime-info-0.60-5.fc12.x86_64
file-roller uses application/x-xz-compressed-tar
Same resolution as bug #22593: it was added 5 months ago to CVS, so it will be part of the next release (after 0.60).
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