* apt-pkg/deb/dpkgpm.cc:

  - fix backgrounding when dpkg runs (closes: #486222)
* cmdline/apt-mark:
  - show error on incorrect aguments (LP: #517917), thanks to
    Torsten Spindler

apt-pkg/deb/dpkgpm.cc

@@ -958,6 +958,7 @@ bool pkgDPkgPM::Go(int OutStatusFd)
 	    rtt = tt;
 	    cfmakeraw(&rtt);
 	    rtt.c_lflag &= ~ECHO;
+	    rtt.c_lflag |= ISIG;
 	    // block SIGTTOU during tcsetattr to prevent a hang if
 	    // the process is a member of the background process group
 	    // http://www.opengroup.org/onlinepubs/000095399/functions/tcsetattr.html

cmdline/apt-mark

@@ -82,6 +82,9 @@ if __name__ == "__main__":
     else:
         STATE_FILE=options.filename
 
+    if len(args) == 0:
+        parser.error("first argument must be 'markauto', 'unmarkauto' or 'showauto'")
+
     if args[0] == "showauto":
         show_automatic(STATE_FILE)
     else:

debian/changelog

@@ -12,6 +12,11 @@ apt (0.7.25.3ubuntu2) UNRELEASED; urgency=low
   * debian/apt.conf.autoremove:
     - add "oldlibs" to the APT::Never-MarkAuto-Sections as its used
       for transitional packages
+  * apt-pkg/deb/dpkgpm.cc:
+    - fix backgrounding when dpkg runs (closes: #486222)
+  * cmdline/apt-mark:
+    - show error on incorrect aguments (LP: #517917), thanks to
+      Torsten Spindler
 
   [ Robert Collins ]
   * Change the package index Info methods to allow apt-cache policy to be