Please describe the problem:
If a tar file contains an empty directory, Archive Manager does not show it when
it opens that tar file and does not extract it when extracting the contents of
the tar file. Command-line tar does correctly extract these empty directories.

Steps to reproduce:
$ cd /tmp
$ mkdir testing
$ mkdir testing/empty
$ touch testing/file
$ tar cvfz testing.tar.gz testing
testing/
testing/empty/
testing/file
$ file-roller testing.tar.gz


Actual results:
The "empty" directory does not appear in the file-roller window, and is not
extracted when extracting the contents of the tar file by dragging to Nautilus.

Expected results:
The whole contents of the tar file should be extracted, including the directory
"empty".

Does this happen every time?
Yes.

Other information: