[Bug-tar] Feature request: counterpiece to option sequence "--null" "--files-from=..." for option "--list"

[Helmut Waitzmann]

I'd like to delete members of an archive, which are already archived in
a second one.  The best solution would be to use the "--files-from" and
"--null" options:  Files with names "-C" wouldn't do any harm.

tar -f second.tar --list --null . | \
tar -f first.tar --files-from=- --null --delete --no-recursion

But this won't work, because "--null" only affects the semantics of the
"--files-from" option, not the "--list" option (which I think is
correct).

So I'd like to have a "--list-null" option, which would list the contents
of the archive as a NUL separated list of member names:

tar -f second.tar --list-null . | \
tar -f first.tar --files-from=- --null --delete --no-recursion

One benefit of this would be, that this list could be piped to xargs:

tar -f archive.tar --list-null | \
xargs --null -- process the archive member names as you like
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