[Bug 789859] Re: add-apt-repository adds invalid deb line to sources file, if adding an already added, but disabled, PPA

[Rune K. Svendsen]

** Attachment added: "sources.list.d.tar.gz"
   https://bugs.launchpad.net/bugs/789859/+attachment/2146771/+files/sources.list.d.tar.gz

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https://bugs.launchpad.net/bugs/789859

Title:
  add-apt-repository adds invalid deb line to sources file, if adding an
  already added, but disabled, PPA

Status in “software-properties” package in Ubuntu:
  New

Bug description:
  
  STEPS TO REPRODUCE:
  Long way:
  1. Install oibaf's mesa PPA using add-apt-repository:
  sudo add-apt-repository ppa:oibaf/graphics-drivers
  sudo apt-get update
  sudo apt-get dist-upgrade
  2. Remove this PPA with ppa-purge:
  sudo ppa-purge ppa:oibaf/graphics-drivers
  3. Add the PPA again using add-apt-repository:
  sudo add-apt-repository ppa:oibaf/graphics-drivers

  ----OR----

  Short way:
  1. Place the two files "oibaf-graphics-drivers-natty.list" and "oibaf-graphics-drivers-natty.list.save" that are contained in the attached file sources.list.d.tar.gz in /etc/apt/sources.list.d. These are the files that are produced by follwing steps 1. and 2. above.
  2. Add the repository again:
  sudo add-apt-repository ppa:oibaf/graphics-drivers

  RESULT:
  The file "/etc/apt/sources.list.d/oibaf-graphics-drivers-natty.list" now contains a third, erroneous line that says "ain", causing "apt-get update" to fail with:
  E: Type 'ain' is not known on line 3 in source list /etc/apt/sources.list.d/oibaf-graphics-drivers-natty.list

  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: python-software-properties 0.80.9
  ProcVersionSignature: Ubuntu 2.6.39-0.5~20110427-generic 2.6.39-rc5
  Uname: Linux 2.6.39-0-generic x86_64
  Architecture: amd64
  Date: Sun May 29 14:20:37 2011
  InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
  PackageArchitecture: all
  ProcEnviron:
   LANGUAGE=en_DK:en
   LANG=en_DK.UTF-8
   SHELL=/bin/bash
  SourcePackage: software-properties
  UpgradeStatus: Upgraded to natty on 2011-04-28 (30 days ago)