[Bug-tar] Tarring with --files-from/-T adds files multiple times

[Tyson Tucker]

I haven't figured out what makes the duplicate files/directories
special, but some are duplicated up to three times in the tar file.  I've tested it on versions 1.17 and 1.22 on Solaris and 1.22 on Linux. 

To reproduce:

find /usr/local/lib /usr/local/share > test_file
tar -c --files-from=test_file -f /tmp/test.tar
tar -tf /tmp/test.tar | sort | uniq -d

Let me know if you need any more details.


Thank you,
Tyson