Comment 1 for bug 1831150

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Brian Murray (brian-murray) wrote : Re: only user.* extended attributes restored upon extraction

After discussing this with upstream it became clear that the documentation is incorrect and it is deliberate that only the "user.*" extended attributes are applied by default during extraction.

"This decision was done because only user.* attributes are 100% safe to
extract. The security.* (especially capabilities) can have some binary
format specific to the box creating the archive but incompatible with host
extracting the archive."

https://lists.gnu.org/archive/html/bug-tar/2019-06/msg00001.html

The man for tar should be updated to reflect that to avoid any confusion.