[Bug 1936273] [NEW] apt not respecting Ignore-Files-Silently directive

[Todd Taft]

Public bug reported:

I have a configuration management system that stores a backup copy of
files that it updates with a suffix based upon the date that the file is
updated (.YYYY-MM-DD)

In Ubuntu 20.04, I have added a file 00ignore to the /etc/apt/apt.conf
directory.

The contents of the file are one line:
Dir::Ignore-Files-Silently:: "\.[12][0-9][0-9][0-9]-[01][0-9]-[0-3][0-9]$";

The system appears to read the file, but doesn't seem to process it, as
apt and related programs still spit out warnings.

# apt-config dump |grep Ignore
Dir::Ignore-Files-Silently "";
Dir::Ignore-Files-Silently:: "~$";
Dir::Ignore-Files-Silently:: "\.disabled$";
Dir::Ignore-Files-Silently:: "\.bak$";
Dir::Ignore-Files-Silently:: "\.dpkg-[a-z]+$";
Dir::Ignore-Files-Silently:: "\.ucf-[a-z]+$";
Dir::Ignore-Files-Silently:: "\.save$";
Dir::Ignore-Files-Silently:: "\.orig$";
Dir::Ignore-Files-Silently:: "\.distUpgrade$";
Dir::Ignore-Files-Silently:: "\.[12][0-9][0-9][0-9]-[01][0-9]-[0-3][0-9]$";
N: Ignoring file '99unclet-override.2021-06-15' in directory '/etc/apt/apt.conf.d/' as it has an invalid filename extension
N: Ignoring file '00unclet.2021-06-18' in directory '/etc/apt/apt.conf.d/' as it has an invalid filename extension

Note: aptitude does not display this warning, although many other apt-
related programs do (e.g. apt, apt-get, apt-config).

** Affects: apt (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1936273

Title:
  apt not respecting Ignore-Files-Silently directive

Status in apt package in Ubuntu:
  New

Bug description:
  I have a configuration management system that stores a backup copy of
  files that it updates with a suffix based upon the date that the file
  is updated (.YYYY-MM-DD)

  In Ubuntu 20.04, I have added a file 00ignore to the /etc/apt/apt.conf
  directory.

  The contents of the file are one line:
  Dir::Ignore-Files-Silently:: "\.[12][0-9][0-9][0-9]-[01][0-9]-[0-3][0-9]$";

  The system appears to read the file, but doesn't seem to process it,
  as apt and related programs still spit out warnings.

  # apt-config dump |grep Ignore
  Dir::Ignore-Files-Silently "";
  Dir::Ignore-Files-Silently:: "~$";
  Dir::Ignore-Files-Silently:: "\.disabled$";
  Dir::Ignore-Files-Silently:: "\.bak$";
  Dir::Ignore-Files-Silently:: "\.dpkg-[a-z]+$";
  Dir::Ignore-Files-Silently:: "\.ucf-[a-z]+$";
  Dir::Ignore-Files-Silently:: "\.save$";
  Dir::Ignore-Files-Silently:: "\.orig$";
  Dir::Ignore-Files-Silently:: "\.distUpgrade$";
  Dir::Ignore-Files-Silently:: "\.[12][0-9][0-9][0-9]-[01][0-9]-[0-3][0-9]$";
  N: Ignoring file '99unclet-override.2021-06-15' in directory '/etc/apt/apt.conf.d/' as it has an invalid filename extension
  N: Ignoring file '00unclet.2021-06-18' in directory '/etc/apt/apt.conf.d/' as it has an invalid filename extension

  Note: aptitude does not display this warning, although many other apt-
  related programs do (e.g. apt, apt-get, apt-config).

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