Hi Walter, Apologies for a long delay.
> The documentation for the CACHEDIR.TAG file is sadly lacking, and > needs two items to be spelled out explicitly... I have fixed it in the following commit: http://git.savannah.gnu.org/cgit/tar.git/commit/?id=7b65ae35ab9f6eafd96044f1a74bdf5a9f1db8ab Best regards, Sergey