Bug#512046: apt-cache showsrc exits successfully and silently if no package is found

[Julien Valroff <julien@kirya.net>]

Package: apt
Version: 0.7.20
Severity: normal

Hi,

$ apt-cache showsrc nonexistingpackage
$ echo $?
0

whereas 

$ apt-cache show nonexistingpackage
W: Unable to locate package nonexistingpackage
E: No packages found
$ echo $?
100

"show" has the correct behaviour, I think "showsrc" should be amended to 
have the same behaviour.

Cheers,
Julien

-- Package-specific info:

-- apt-config dump --

APT "";
APT::Architecture "amd64";
APT::Build-Essential "";
APT::Build-Essential:: "build-essential";
APT::Install-Recommends "1";
APT::Install-Suggests "0";
APT::Acquire "";
APT::Acquire::Translation "environment";
APT::Authentication "";
APT::Authentication::TrustCDROM "true";
APT::NeverAutoRemove "";
APT::NeverAutoRemove:: "^linux-image.*";
APT::NeverAutoRemove:: "^linux-restricted-modules.*";
APT::Update "";
APT::Update::Pre-Invoke "";
APT::Update::Pre-Invoke:: "/usr/bin/daptup --pre";
APT::Update::Post-Invoke "";
APT::Update::Post-Invoke:: "/usr/bin/daptup --post";
Dir "/";
Dir::State "var/lib/apt/";
Dir::State::lists "lists/";
Dir::State::cdroms "cdroms.list";
Dir::State::userstatus "status.user";
Dir::State::status "/var/lib/dpkg/status";
Dir::Cache "var/cache/apt/";
Dir::Cache::archives "archives/";
Dir::Cache::srcpkgcache "srcpkgcache.bin";
Dir::Cache::pkgcache "pkgcache.bin";
Dir::Etc "etc/apt/";
Dir::Etc::sourcelist "sources.list";
Dir::Etc::sourceparts "sources.list.d";
Dir::Etc::vendorlist "vendors.list";
Dir::Etc::vendorparts "vendors.list.d";
Dir::Etc::main "apt.conf";
Dir::Etc::parts "apt.conf.d";
Dir::Etc::preferences "preferences";
Dir::Bin "";
Dir::Bin::methods "/usr/lib/apt/methods";
Dir::Bin::dpkg "/usr/bin/dpkg";
Dir::Log "var/log/apt";
Dir::Log::Terminal "term.log";
DPkg "";
DPkg::Pre-Install-Pkgs "";
DPkg::Pre-Install-Pkgs:: "/usr/sbin/dpkg-preconfigure --apt || true";

-- /etc/apt/preferences --

package: *
Pin: release a=experimental
Pin-Priority: 100

-- /etc/apt/sources.list --

deb http://ftp.fr.debian.org/debian/ sid main contrib non-free
deb-src http://ftp.fr.debian.org/debian/ sid main contrib non-free

-- System Information:
Debian Release: 5.0
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.26-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages apt depends on:
ii  debian-archive-keyring   2008.04.16+nmu1 GnuPG archive keys of the Debian a
ii  libc6                    2.9-0exp1       GNU C Library: Shared libraries
ii  libgcc1                  1:4.3.2-2       GCC support library
ii  libstdc++6               4.3.2-2         The GNU Standard C++ Library v3

apt recommends no packages.

Versions of packages apt suggests:
pn  apt-doc                       <none>     (no description available)
ii  aptitude                      0.5.0-1    terminal-based package manager
ii  bzip2                         1.0.5-1    high-quality block-sorting file co
ii  dpkg-dev                      1.14.24    Debian package development tools
ii  lzma                          4.43-14    Compression method of 7z format in
ii  python-apt                    0.7.8      Python interface to libapt-pkg

-- no debconf information