[Bug-tar] --concatenate bug?

[David Ziman]

When using concatenate on an already created archive (foo.tar) and
specifying new files to "concatenate" as members to the archive
instead of specifying an archive to concatenate, in GNU tar 1.14 it
simply concatenates the file to the archive without verifying the
format of the archive or that it actually is an archive:

to reproduce the problem...

in any empty directory:

echo "the end of the file?" foo1

tar --create --file=foo1.tar * --verbose

tar --concatenate --file=foo1.tar foo1 --verbose


Thanks,
David Ziman