Bug#660890: apt: apt-cache - Messages are not sent to pipe

[Jari Aalto <jari.aalto@cante.net>]

Package: apt
Version: 0.8.15.9
Severity: normal

Problem:

	$ apt-cache policy nothing-there
	N: Unable to locate package wrr

	$ apt-cache policy nothing-there 2&1 | tee message.log
	$ cat messages.log
	<nothing>

This is unexpected behavior.

Program should not behave behave differently on context of pipes.
Please display messages as they are so that they can be interpreted or
recorded by other programs.

-- System Information:
Debian Release: wheezy/sid
  APT prefers unstable
  APT policy: (990, 'unstable')
Architecture: i386 (i686)

Kernel: Linux 3.2.0-1-686-pae (SMP w/1 CPU core)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages apt depends on:
ii  debian-archive-keyring  2010.08.28
ii  gnupg                   1.4.11-3
ii  libc6                   2.13-26
ii  libgcc1                 1:4.6.2-14
ii  libstdc++6              4.6.2-14
ii  zlib1g                  1:1.2.6.dfsg-1

apt recommends no packages.

Versions of packages apt suggests:
ii  apt-doc         <none>
ii  aptitude        0.6.5-1
ii  bzip2           1.0.6-1
ii  dpkg-dev        1.16.1.2
ii  python-apt      0.8.3+nmu1
ii  xz-lzma [lzma]  5.1.1alpha+20110809-3

-- no debconf information