apt-shell: quit from shell by Ctrl+D (#18343)

apt-0.5.15lorg2-alt-apt-shell_quit_by_ctrld.patch

@@ -0,0 +1,28 @@
+
+https://bugzilla.altlinux.org/show_bug.cgi?id=18343
+
+diff --git a/apt/cmdline/apt-shell.cc b/apt/cmdline/apt-shell.cc
+index 6d1f767..3aadbd5 100644
+--- a/apt/cmdline/apt-shell.cc
++++ b/apt/cmdline/apt-shell.cc
+@@ -4477,10 +4477,17 @@ int main(int argc,const char *argv[])
+       }
+       
+       line = readline(_config->Find("APT::Shell::Prompt", "apt> ").c_str());
+-      if (!line || !*line) {
+-	 free(line);
+-	 continue;
++      if (!line) {
++        // exit from shell by Ctrl-D
++         _config->Set("quit", "true");
++         continue;
++      }
++
++      if (!*line) {
++         free(line);
++         continue;
+       }
++
+       add_history(line);
+ 
+       largc = 1; // CommandLine.Parse() ignores the first option.

apt.spec

@@ -69,6 +69,7 @@ Patch57: apt-0.5.15lorg2-alt-genpkglist-no-fileflags.patch
 Patch58: apt-0.5.15lorg2-lorg-cache-limit.patch
 Patch59: apt-0.5.15lorg2-alt-gcc4.3.patch
 Patch60: apt-0.5.15lorg2-alt-apt-shell_list_completion.patch
+Patch61: apt-0.5.15lorg2-alt-apt-shell_quit_by_ctrld.patch
 
 # Normally not applied, but useful.
 Patch101: apt-0.5.4cnc9-alt-getsrc-debug.patch
@@ -269,6 +270,7 @@ This package contains method 'rsync' for APT.
 %patch58 -p1
 %patch59 -p1
 %patch60 -p2
+%patch61 -p2
 
 find -type f -name \*.orig -delete