tar 1.13 --exclude strangeness

[Ambrose Li]

Hi,

suppose the current directory is foo and I want to create a tar
file bar.tar.gz inside the current directory.

If I do a (cd .. && tar foo/bar.tar.gz --exclude foo/\*.tar.gz)
or even (cd .. && tar foo/bar.tar.gz --exclude foo/bar.tar.gz)

tar 1.13 will complain something like

   tar: foo/bar.tar.gz: file changed as we read it
   tar: Error exit delayed from previous errors

and exit with a failure status code (though the tar file is
still created). However, tar 1.11.8 will happily create the
archive (without the excluded file).

Since I told tar to exclude foo/bar.tar.gz, I am puzzled why
it would want to read the file.

Is this a bug in the newest tar, or have I misunderstood what
the --exclude option does?

Thanks,

-- 
Ambrose LI Cheuk-Wing  <address@hidden>

http://ada.dhs.org/~acli/