fix "apt-get --purge build-dep" (closes: #720597)

apt-private/private-cmndline.cc

@@ -149,6 +149,7 @@ bool addArgumentsAPTGet(std::vector<CommandLine::Args> &Args, char const * const
    else if (CmdMatches("build-dep"))
    {
       addArg('a', "host-architecture", "APT::Get::Host-Architecture", CommandLine::HasArg);
+      addArg(0, "purge", "APT::Get::Purge", 0);
       addArg(0, "solver", "APT::Solver", CommandLine::HasArg);
    }
    else if (CmdMatches("clean", "autoclean", "check", "download", "changelog") ||

debian/changelog

@@ -1,3 +1,10 @@
+apt (0.9.13.1) unstable; urgency=low
+
+  [ Colin Watson ]
+  * fix "apt-get  --purge build-dep" (closes: #720597)
+
+ -- Michael Vogt <michael.vogt@ubuntu.com>  Thu, 28 Nov 2013 16:49:31 +0100
+
 apt (0.9.13) unstable; urgency=low
 
   [ TJ Guthrie ]