After testing with a virtualbox image, I can confirm that the problem is indeed that bash does not remove its version of the bash_completion script on upgrade to the newer version which does not include it anymore, even if it was not changed by the user.
If the file is unchanged it should be removed when upgrading.
Ensuring this will fix this bug since bash will be installed before bash-completion because of an old Conflicts: bash-completion in the gutsy version of the bash package.
After testing with a virtualbox image, I can confirm that the problem is indeed that bash does not remove its version of the bash_completion script on upgrade to the newer version which does not include it anymore, even if it was not changed by the user.
If the file is unchanged it should be removed when upgrading.
Ensuring this will fix this bug since bash will be installed before bash-completion because of an old Conflicts: bash-completion in the gutsy version of the bash package.