new file mode 100644
--- /dev/null
+++ b/liboctave/cmd-hist.h
@@ -0,0 +1,122 @@
+// cmd-hist.h                                              -*- C++ -*-
+/*
+
+Copyright (C) 1996 John W. Eaton
+
+This file is part of Octave.
+
+Octave is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 2, or (at your option) any
+later version.
+
+Octave is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with Octave; see the file COPYING.  If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+*/
+
+#if !defined (octave_cmd_hist_h)
+#define octave_cmd_hist_h 1
+
+#include <string>
+
+#include "str-vec.h"
+
+class
+command_history
+{
+public:
+
+  command_history (const string& = string (), int = -1);
+
+  ~command_history (void) { initialized = false; }
+
+  void set_file (const string&);
+
+  string file (void);
+
+  void set_size (int);
+
+  int size (void);
+
+  void ignore_entries (bool = true);
+
+  bool ignoring_entries (void);
+
+  void add (const string&);
+
+  void remove (int);
+
+  int where (void);
+
+  int base (void);
+
+  int current_number (void);
+
+  void stifle (int);
+
+  int unstifle (void);
+
+  int is_stifled (void);
+
+  void read (const string& = string ());
+
+  void read_range (const string& = string (), int = -1, int = -1);
+
+  void write (const string& = string ());
+
+  void append (const string& = string ());
+
+  void truncate_file (const string& = string (), int = -1);
+
+  string_vector list (int = -1, int = 0);
+
+  string get_entry (int);
+
+  void replace_entry (int, const string&);
+
+  void clean_up_and_save (const string& = string (), int = -1);
+
+private:
+
+  // We can only have one history object in any given program.
+  static bool initialized;
+
+  // TRUE means we are ignoring new additions.
+  bool ignoring_additions;
+
+  // The number of hisory lines we read from the history file.
+  int lines_in_file;
+
+  // The number of history lines we've saved so far.
+  int lines_this_session;
+
+  // The default history file.
+  string xfile;
+
+  // The number of lines of history to save.
+  int xsize;
+
+  void error (int);
+
+  void error (const string&);
+
+  command_history (const command_history&);
+
+  command_history& operator = (const command_history&);
+};
+
+#endif
+
+/*
+;;; Local Variables: ***
+;;; mode: C++ ***
+;;; page-delimiter: "^/\\*" ***
+;;; End: ***
+*/