untar or restore only newer files? Impossible?

[Stephen R. van den Berg]

Is it somehow possible to untar from a tar archive only files
that are newer than the ones on disk?  Have I missed some obscure options?

Is it possible with GNU-tar?
--
Sincerely,                 berg at marvin.e17.physik.tu-muenchen.de
           Stephen R. van den Berg.
"I code it in 5 min, optimize it in 90 min, because it's so well optimized:
it runs in only 5 min.  Actually, most of the time I optimize programs."