Command: Code cleanup, added ::category accessor

- The Command object failed to initialize all member on construction and
  initialized them out of order (is this still a thing in C++11?).
- The _category was the only member with no accessor, which is not right.

src/commands/CmdCommands.cpp

@@ -88,7 +88,7 @@ int CmdCommands::execute (std::string& output)
   {
     int row = view.addRow ();
     view.set (row, 0, command.first);
-    view.set (row, 1, Command::categoryNames.at (command.second->_category));
+    view.set (row, 1, Command::categoryNames.at (command.second->category ()));
 
     if (command.second->read_only ())
       view.set (row, 2, "RO");
@@ -213,7 +213,7 @@ int CmdZshCommands::execute (std::string& output)
   std::vector <ZshCommand> commands;
   for (auto& command : context.commands)
   {
-    ZshCommand zshCommand {command.second->_category,
+    ZshCommand zshCommand {command.second->category (),
                            command.first,
                            command.second->description ()};
     commands.push_back (zshCommand);

src/commands/Command.cpp

@@ -213,7 +213,7 @@ const std::map <Command::Category, std::string> Command::categoryNames =
 
 ////////////////////////////////////////////////////////////////////////////////
 Command::Command ()
-: _category(Category::unassigned)
+: _keyword ("")
 , _usage ("")
 , _description ("")
 , _read_only (true)
@@ -221,8 +221,10 @@ Command::Command ()
 , _needs_confirm (false)
 , _needs_gc (true)
 , _uses_context (false)
-, _accepts_filter (true)
-, _accepts_modifications (true)
+, _accepts_filter (false)
+, _accepts_modifications (false)
+, _accepts_miscellaneous (false)
+, _category(Category::unassigned)
 , _permission_quit (false)
 , _permission_all (false)
 , _first_iteration (true)
@@ -294,6 +296,12 @@ bool Command::accepts_miscellaneous () const
   return _accepts_miscellaneous;
 }
 
+////////////////////////////////////////////////////////////////////////////////
+Command::Category Command::category () const
+{
+  return _category;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // Returns true or false indicating whether to proceed with a write command, on
 // a per-task basis, after (potentially) asking for permission.

src/commands/Command.h

@@ -35,23 +35,6 @@
 class Command
 {
 public:
-  Command ();
-  virtual ~Command ();
-
-  static void factory (std::map <std::string, Command*>&);
-
-  std::string keyword () const;
-  std::string usage () const;
-  std::string description () const;
-  bool read_only () const;
-  bool displays_id () const;
-  bool needs_gc () const;
-  bool uses_context () const;
-  bool accepts_filter () const;
-  bool accepts_modifications () const;
-  bool accepts_miscellaneous () const;
-  virtual int execute (std::string&) = 0;
-
   enum class Category
   {
     unassigned,
@@ -68,7 +51,24 @@ public:
     UNDOCUMENTED,
     // Whenever you extend this enum, update categoryNames.
   };
-  Category _category;
+
+  Command ();
+  virtual ~Command ();
+
+  static void factory (std::map <std::string, Command*>&);
+
+  std::string keyword () const;
+  std::string usage () const;
+  std::string description () const;
+  bool read_only () const;
+  bool displays_id () const;
+  bool needs_gc () const;
+  bool uses_context () const;
+  bool accepts_filter () const;
+  bool accepts_modifications () const;
+  bool accepts_miscellaneous () const;
+  Category category () const;
+  virtual int execute (std::string&) = 0;
 
 protected:
   bool permission (const Task&, const std::string&, unsigned int);
@@ -86,6 +86,7 @@ protected:
   bool        _accepts_filter;
   bool        _accepts_modifications;
   bool        _accepts_miscellaneous;
+  Category    _category;
 
   // Permission support
   bool        _permission_quit;