[Bug 1588690] Re: Tar fails to --exclude files

[ChristianEhrhardt]

See related discussions:
http://lists.gnu.org/archive/html/bug-tar/2016-05/msg00012.html
http://lists.gnu.org/archive/html/bug-tar/2016-06/msg00014.html


TL;DR:
In reference to my testcase:
BAD:
tar -c -f /tmp/test.tar -C dir subdir --exclude subdir/file
FIXED:
tar -c -f /tmp/test.tar -C dir --exclude subdir/file subdir

Clarifying last bits with upstream, but this probably is a regression
for everybody who used it wrong (like me) in the past.


** Bug watch added: Debian Bug tracker #824902
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=824902

** Also affects: tar via
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=824902
   Importance: Unknown
       Status: Unknown

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https://bugs.launchpad.net/bugs/1588690

Title:
  Tar fails to --exclude files

Status in GNU tar:
  Unknown
Status in tar package in Ubuntu:
  Confirmed
Status in tar package in Debian:
  New

Bug description:
  Hi,
  this is a regression in tar 1.28-2.1 -> 1.29-1 and by that it is valid for Xenial -> Yakkety, but as well for Debian Stretch.

  Fortunately there is at least a simple test:
  rm -rf dir; mkdir -p dir/subdir; touch dir/subdir/file; tar -c -f /tmp/test.tar -C dir subdir --exclude subdir/file; tar -tf /tmp/test.tar subdir/file

  Correct:
  tar: subdir/file: Not found in archive
  tar: Exiting with failure status due to previous errors

  Wrong:
  subdir/file

  This could cause quite a few weird/under-the-radar bugs all around -
  like in my package which suddenly had more binaries. "Fortunately" one
  of them collided with one of the system, so we found this issue.

  I'll report to Debian as well and link the bug.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.10
  Package: tar 1.29-1
  ProcVersionSignature: Ubuntu 4.4.0-23.41-generic 4.4.10
  Uname: Linux 4.4.0-23-generic x86_64
  ApportVersion: 2.20.1-0ubuntu4
  Architecture: amd64
  Date: Fri Jun  3 09:46:54 2016
  InstallationDate: Installed on 2016-06-01 (1 days ago)
  InstallationMedia: Ubuntu-Server 16.10 "Yakkety Yak" - Alpha amd64 (20160601)
  SourcePackage: tar
  UpgradeStatus: No upgrade log present (probably fresh install)

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