Commands - shell

- Migrated handleShell to CmdShell.
- Note there is a segfault bug that will probably go away by itself when
  Context::parse is obsoleted.

src/command.cpp

@@ -1792,74 +1792,6 @@ int handleIds (std::string& outs)
   return rc;
 }
 
-////////////////////////////////////////////////////////////////////////////////
-// TODO Obsolete.
-void handleShell ()
-{
-  // Display some kind of welcome message.
-  Color bold (Color::nocolor, Color::nocolor, false, true, false);
-  std::cout << (context.color () ? bold.colorize (PACKAGE_STRING) : PACKAGE_STRING)
-            << " shell\n\n"
-            << "Enter any task command (such as 'list'), or hit 'Enter'.\n"
-            << "There is no need to include the 'task' command itself.\n"
-            << "Enter 'quit' (or 'bye', 'exit') to end the session.\n\n";
-
-  // Make a copy because context.clear will delete them.
-  std::string permanentOverrides = " " + context.file_override
-                                 + " " + context.var_overrides;
-
-  std::vector <std::string> quit_commands;
-  quit_commands.push_back ("quit");
-  quit_commands.push_back ("exit");
-  quit_commands.push_back ("bye");
-
-  std::string command;
-  bool keepGoing = true;
-
-  do
-  {
-    std::cout << context.config.get ("shell.prompt") << " ";
-
-    command = "";
-    std::getline (std::cin, command);
-    std::string decoratedCommand = trim (command + permanentOverrides);
-
-    // When looking for the 'quit' command, use 'command', not
-    // 'decoratedCommand'.
-    if (std::find (quit_commands.begin (), quit_commands.end (), lowerCase (command)) != quit_commands.end ())
-    {
-      keepGoing = false;
-    }
-    else
-    {
-      try
-      {
-        context.clear ();
-        std::vector <std::string> args;
-        split (args, decoratedCommand, ' ');
-        foreach (arg, args)    context.args.push_back (*arg);
-
-        context.initialize (0, NULL);
-        context.run ();
-      }
-
-      catch (std::string& error)
-      {
-        std::cout << error << "\n";
-      }
-
-      catch (...)
-      {
-        std::cerr << "Unknown error." << "\n";
-      }
-    }
-  }
-  while (keepGoing && !std::cin.eof ());
-
-  // No need to repeat any overrides after the shell quits.
-  context.clearMessages ();
-}
-
 ////////////////////////////////////////////////////////////////////////////////
 int handleColor (std::string& outs)
 {