bash-completion fails under "set -o nounset"

[Ian! D. Allen]

Binary package hint: bash-completion

Ubuntu 9.10rc
bash-completion: Installed: 1:1.0-3ubuntu2

If you turn on "nounset" to warn about undefined variables, then
bash_completion fails to load and fails to run.

idallen@ubuntu:~$ set -o nounset
idallen@ubuntu:~$ . /etc/bash_completion
bash: BASH_COMPLETION_DEBUG: unbound variable
bash: BASH_COMPLETION: unbound variable
bash: BASH_COMPLETION_DIR: unbound variable
bash: BASH_COMPLETION: unbound variable
bash: list[@]: unbound variable
bash: BASH_COMPLETION_DIR: unbound variable
bash: BASH_COMPLETION: unbound variable

idallen@ubuntu:~$ set +o nounset
idallen@ubuntu:~$ cd /[TAB]
bin/ etc/ media/ root/ sys/
boot/ home/ mnt/ sbin/ tmp/
cdrom@ lib/ opt/ selinux/ usr/
dev/ lost+found/ proc/ srv/ var/

idallen@ubuntu:~$ set -o nounset
idallen@ubuntu:~$ cd /[TAB] bash: COMPREPLY[@]: unbound variable

etc.

All references to variables that might be unset should be replaced with
"${variable-}" to avoid these errors.

ProblemType: Bug
Architecture: i386
Date: Mon Oct 26 11:01:24 2009
DistroRelease: Ubuntu 9.10
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release Candidate i386 (20091020.3)
Package: bash-completion 1:1.0-3ubuntu2
PackageArchitecture: all
ProcEnviron:
 LC_COLLATE=C
 PATH=(custom, user)
 LANG=C
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
SourcePackage: bash-completion
Uname: Linux 2.6.31-14-generic i686

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.