I've encountered an odd "artifact" in a tarfile that I've never seen before, in the course of running Gnu tar on a perl module downloaded from CPAN. I ran the cpan shell "test" command (which then ran tar on the module archive) and this is the terminal output I saw:
cpan[2]> test Log::Dispatch::WarnDie
Running test for module 'Log::Dispatch::WarnDie'
...
Checksum for /home/somian/.local/share/.cpan/sources/authors/
id/L/LN/LNATION/Log-Dispatch-WarnDie-0.05.tar.gz ok
Scanning cache /home/somian/.local/share/.cpan/build for sizes
............................................................................DONE
/usr/bin/tar: Ignoring unknown extended header keyword 'LIBARCHIVE.xattr.com.apple.provenance'
/usr/bin/tar: Ignoring unknown extended header keyword 'LIBARCHIVE.xattr.com.apple.quarantine'
/usr/bin/tar: Ignoring unknown extended header keyword 'LIBARCHIVE.xattr.com.apple.provenance'
/usr/bin/tar: Ignoring unknown extended header keyword 'LIBARCHIVE.xattr.com.apple.provenance'
/usr/bin/tar: Ignoring unknown extended header keyword 'LIBARCHIVE.xattr.com.apple.provenance'
/usr/bin/tar: Ignoring unknown extended header keyword 'LIBARCHIVE.xattr.com.apple.quarantine'
/usr/bin/tar: Ignoring unknown extended header keyword 'LIBARCHIVE.xattr.com.apple.provenance'
/usr/bin/tar: Ignoring unknown extended header keyword 'LIBARCHIVE.xattr.com.apple.quarantine'
/usr/bin/tar: Ignoring unknown extended header keyword 'LIBARCHIVE.xattr.com.apple.provenance'
/usr/bin/tar: Ignoring unknown extended header keyword 'LIBARCHIVE.xattr.com.apple.quarantine'
/usr/bin/tar: Ignoring unknown extended header keyword 'LIBARCHIVE.xattr.com.apple.provenance'
/usr/bin/tar: Ignoring unknown extended header keyword 'LIBARCHIVE.xattr.com.apple.provenance'
/usr/bin/tar: Ignoring unknown extended header keyword 'LIBARCHIVE.xattr.com.apple.provenance'
/usr/bin/tar: Ignoring unknown extended header keyword 'LIBARCHIVE.xattr.com.apple.quarantine'
/usr/bin/tar: Ignoring unknown extended header keyword 'LIBARCHIVE.xattr.com.apple.provenance'
/usr/bin/tar: Ignoring unknown extended header keyword 'LIBARCHIVE.xattr.com.apple.provenance'
/usr/bin/tar: Ignoring unknown extended header keyword 'LIBARCHIVE.xattr.com.apple.provenance'
/usr/bin/tar: Ignoring unknown extended header keyword 'LIBARCHIVE.xattr.com.apple.provenance'
/usr/bin/tar: Ignoring unknown extended header keyword 'LIBARCHIVE.xattr.com.apple.quarantine'
/usr/bin/tar: Ignoring unknown extended header keyword 'LIBARCHIVE.xattr.com.apple.provenance'
/usr/bin/tar: Ignoring unknown extended header keyword 'LIBARCHIVE.xattr.com.apple.quarantine'
/usr/bin/tar: Ignoring unknown extended header keyword 'LIBARCHIVE.xattr.com.apple.provenance'
Configuring L/LN/LNATION/Log-Dispatch-WarnDie-0.05.tar.gz with Makefile.PL
Checking if your kit is complete...
Looks good
...
Obviously the appearance of the word "apple" in the warning messages suggests that someone used a Mac to create the archive, doesn't it? I have no Macs around to play with, only Linux boxes here (erm, well, one Windows box with cygwin on it). Does anyone know why this unsightly mass of warnings is being generated?
Thanks and good coding to all.
