--- a/scripts/ChangeLog	Thu Jan 10 19:28:38 2008 +0000
+++ b/scripts/ChangeLog	Thu Jan 10 22:38:26 2008 +0000
@@ -1,3 +1,8 @@
+2008-01-10  John W. Eaton  <jwe@octave.org>
+
+	* plot/gnuplot_binary.m: New file.
+	* plot/Makefile.in (SOURCES): Add it to the list.
+
 2008-01-09  John W. Eaton  <jwe@octave.org>
 
 	* plot/drawnow.m: Fail if filename includes a directory part that

--- a/scripts/plot/Makefile.in	Thu Jan 10 19:28:38 2008 +0000
+++ b/scripts/plot/Makefile.in	Thu Jan 10 22:38:26 2008 +0000
@@ -103,6 +103,7 @@
   fplot.m \
   gca.m \
   gcf.m \
+  gnuplot_binary.m \
   grid.m \
   hidden.m \
   hist.m \

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/scripts/plot/gnuplot_binary.m	Thu Jan 10 22:38:26 2008 +0000
@@ -0,0 +1,50 @@
+## Copyright (C) 2008 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 3 of the License, 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, see
+## <http://www.gnu.org/licenses/>.
+
+## -*- texinfo -*-
+## @deftypefn {Loadable Function} {@var{val} =} gnuplot_binary ()
+## @deftypefnx {Loadable Function} {@var{old_val} =} gnuplot_binary (@var{new_val})
+## Query or set the name of the program invoked by the plot command.
+## The default value @code{\"gnuplot\"}.  @xref{Installation}.
+## @end deftypefn
+
+## Author: jwe
+
+function retval = gnuplot_binary (new_val)
+
+  persistent gp_binary = "gnuplot";
+
+  if (nargout > 0 || nargin == 0)
+    retval = gp_binary;
+  endif
+
+  if (nargin == 1)
+    if (ischar (new_val))
+      if (! isempty (new_val))
+	gp_binary = new_val;
+      else
+	error ("gnuplot_binary: value must not be empty");
+      endif
+    else
+      error ("gnuplot_binary: expecting arg to be a character string");
+    endif
+  elseif (nargin > 1)
+    print_usage ();
+  endif
+
+endfunction

--- a/src/ChangeLog	Thu Jan 10 19:28:38 2008 +0000
+++ b/src/ChangeLog	Thu Jan 10 22:38:26 2008 +0000
@@ -1,5 +1,13 @@
 2008-01-10  John W. Eaton  <jwe@octave.org>
 
+	* DLD_FUNCTIONS/__gnuplot_raw__.l: Delete.
+	* Makefile.in (DLD_XSRC): Remove it from the list.
+	(BUILT_DISTFILES): Remove __gnuplot_raw__.cc from the list.
+	(stamp-prereq): Don't depend on __gnuplot_raw__.cc.
+	(maintainer-clean): Don't remove __gnuplot_raw__.cc.
+	(__gnuplot_raw__.cc): Delete target.
+	(__gnuplot_raw__.o, pic/__gnuplot_raw__.o): Delete targets.
+
 	* mex.cc (calc_single_subscript_internal): New static function.
 	(mxArray_octave_value::calc_single_subscript): Use it.
 	(mxArray_matlab::calc_single_subscript): Use it.

--- a/src/DLD-FUNCTIONS/__gnuplot_raw__.l	Thu Jan 10 19:28:38 2008 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,1916 +0,0 @@
-/*
-
-Copyright (C) 2004, 2005, 2006, 2007 John W. Eaton and Teemu Ikonen
-
-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 3 of the License, 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, see
-<http://www.gnu.org/licenses/>.
-
-*/
-
-%option prefix="gpt"
-%option noyywrap
-
-%{
-// PKG_ADD: mark_as_rawcommand ("__gnuplot_plot__");
-// PKG_ADD: mark_as_rawcommand ("__gnuplot_splot__");
-// PKG_ADD: mark_as_rawcommand ("__gnuplot_replot__");
-
-// PKG_ADD: mark_as_command ("__gnuplot_set__");
-// PKG_ADD: mark_as_command ("__gnuplot_show__");
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <map>
-#include <string>
-#include <fstream>
-#include <iostream>
-#include <sstream>
-
-#ifdef HAVE_UNISTD_H
-#ifdef HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-#include <unistd.h>
-#endif
-
-#include "file-ops.h"
-#include "oct-env.h"
-
-#include "defun-dld.h"
-#include "file-io.h"
-#include "gripes.h"
-#include "ls-oct-ascii.h"
-#include "parse.h"
-#include "procstream.h"
-#include "sighandlers.h"
-#include "utils.h"
-#include "variables.h"
-
-enum _toktype
-  {
-    START_PAREN = 1,
-    END_PAREN,
-    START_BRACE,
-    END_BRACE,
-    START_BRACKET,
-    END_BRACKET,
-    COLON,
-    SEMICOLON,
-    COMMA,
-    QUOTE,
-    DOLLAR,
-    IDENT,
-    NUMBER,
-    BINOP,
-    UNOP,
-    STRING,
-    OTHER,
-    TITLE,
-    USING,
-    WITH,
-    AXES,
-    CLEAR
-  };
-
-typedef bool (*pred) (const int);
-
-class
-gpt_parse_error
-{
-public:
-  gpt_parse_error (void) : msg () { }
-  gpt_parse_error (std::string errmsg) : msg (errmsg) { }
-
-  std::string msg;
-};
-
-static bool gpt_quote_is_transpose;
-static bool gpt_allow_plotkw;
-static int gpt_parens;
-static int gpt_brackets;
-static int gpt_braces;
-
-static bool can_be_plotkw (void);
-
-static int is_plot_keyword (const std::string& s);
-
-static int handle_string (char delim);
-static std::string strbuf;
-
-%}
-
-D	[0-9]
-S	[ \t]
-IDENT	([_a-zA-Z@][_a-zA-Z0-9]*)
-EXPON	([DdEe][+-]?{D}+)
-NUMBER  (({D}+\.?{D}*{EXPON}?)|(\.{D}+{EXPON}?)|(0[xX][0-9a-fA-F]+))
-NOT	((\~)|(\!))
-/* NOT is not strictly a binary operator, but is close enough for us. */
-BINOP   (({NOT})|(\.?([\*/\\^+-]|\*\*)=?)|([<=~!>&|]=)|([=&|<>]{1,2})|(<<=)|(>>=)|(\.))
-/* single quote (') transpose operator is handled separately. */
-UNOP    ((\+\+)|(\-\-)|(\.'))
-
-%%
-
-"(" {
-    gpt_quote_is_transpose = false;
-    gpt_parens++;
-    return START_PAREN;
-    }
-
-")" {
-    gpt_quote_is_transpose = true;
-    gpt_parens--;
-    return END_PAREN;
-    }
-
-"{" {
-    gpt_quote_is_transpose = false;
-    gpt_braces++;
-    return START_BRACE;
-    }
-
-"}" {
-    gpt_quote_is_transpose = true;
-    gpt_braces--;
-    return END_BRACE;
-    }
-
-"[" {
-    gpt_quote_is_transpose = false;
-    gpt_brackets++;
-    return START_BRACKET;
-    }
-
-"]" {
-    gpt_quote_is_transpose = true;
-    gpt_brackets--;
-    return END_BRACKET;
-    }
-
-":" {
-    gpt_quote_is_transpose = false;
-    return COLON;
-    }
-
-";" {
-    gpt_quote_is_transpose = false;
-    return SEMICOLON;
-    }
-
-"," {
-    gpt_quote_is_transpose = false;
-    return COMMA;
-    }
-
-"'" {
-    if (gpt_quote_is_transpose)
-      {
-        gpt_allow_plotkw = true;
-        return QUOTE;
-      }
-    else
-      {
-        gpt_quote_is_transpose = true;
-        gpt_allow_plotkw = true;
-        return handle_string ('\'');
-      }
-    }
-
-"$" {
-    gpt_quote_is_transpose = false;
-    return DOLLAR;
-    }
-
-"\"" {
-    return handle_string ('"');
-    }
-
-{IDENT} {
-    int itok = 0;
-    if (can_be_plotkw () && (itok = is_plot_keyword (yytext)))
-      {
-        gpt_quote_is_transpose = false;
-        gpt_allow_plotkw = true;
-        return itok;
-      }
-    else if (std::string (yytext) == "function")
-      throw gpt_parse_error ("function keyword not allowed in plot commands");
-    else
-      {
-        gpt_quote_is_transpose = true;
-        gpt_allow_plotkw = true;
-        return IDENT;
-      }
-    }
-
-{D}+/\.[\*/\\^'] | /* ' */
-{NUMBER} {
-    gpt_quote_is_transpose = true;
-    gpt_allow_plotkw = true;
-    return NUMBER;
-    }
-
-{BINOP} {
-    gpt_quote_is_transpose = false;
-    gpt_allow_plotkw = false;
-    return BINOP;
-    }
-
-{UNOP} {
-    gpt_quote_is_transpose = false;
-    gpt_allow_plotkw = true;
-    return UNOP;
-    }
-
-{S} { /* Ignore spaces and tabs outside of character strings. */ }
-
-. {
-    gpt_quote_is_transpose = false;
-    gpt_allow_plotkw = true;
-    warning ("unknown token = \"%s\" in plot command", yytext);
-    return OTHER;
-    }
-
-%%
-
-// ------------------------------------------------------------
-// Interface to external gnuplot process(es), including gnuplot
-// command parser.
-// ------------------------------------------------------------
-
-// The name of the shell command to execute to start gnuplot.
-static std::string Vgnuplot_binary = GNUPLOT_BINARY;
-
-// Append -title "Figure NN" to the gnuplot command?
-static bool Vgnuplot_use_title_option = octave_env::have_x11_display ();
-
-// Gnuplot command strings that we use.
-static std::string Vgnuplot_command_plot = "pl";
-static std::string Vgnuplot_command_replot = "rep";
-static std::string Vgnuplot_command_splot = "sp";
-static std::string Vgnuplot_command_using = "u";
-static std::string Vgnuplot_command_with = "w";
-static std::string Vgnuplot_command_axes = "ax";
-static std::string Vgnuplot_command_title = "t";
-static std::string Vgnuplot_command_end = "\n";
-
-// Check if the parser state is such that a plot keyword can occur.
-
-static bool
-can_be_plotkw (void)
-{
-    return (gpt_allow_plotkw
-	    && (gpt_braces == 0)
-	    && (gpt_brackets == 0)
-	    && (gpt_parens == 0));
-}
-
-// Check to see if a character string matches any one of the plot
-// option keywords.  Don't match abbreviations for clear, since that's
-// not a gnuplot keyword (users will probably only expect to be able
-// to abbreviate actual gnuplot keywords).
-
-static int
-is_plot_keyword (const std::string& s)
-{
-  if (almost_match ("title", s, 1))
-    return TITLE;
-  else if (almost_match ("using", s, 1))
-    return USING;
-  else if (almost_match ("with", s, 1))
-    return WITH;
-  else if (almost_match ("axes", s, 2) || almost_match ("axis", s, 2))
-    return AXES;
-  else if ("clear" == s)
-    return CLEAR;
-  else
-    return 0;
-}
-
-// This is used to handle character strings.  Kludge alert.
-
-static int
-handle_string (char delim)
-{
-  int c;
-  bool escape_pending = false;
-
-  strbuf = std::string (1, delim);
-
-  while ((c = yyinput ()) != EOF)
-    {
-      if (c == '\\')
-	{
-	  if (escape_pending)
-	    {
-	      strbuf += static_cast<char> (c);
-	      escape_pending = false;
-	    }
-	  else
-	    {
-	      strbuf += static_cast<char> (c);
-	      escape_pending = true;
-	    }
-	  continue;
-	}
-      else if (c == '\n')
-	{
-	  error ("unterminated string constant");
-	  break;
-	}
-      else if (c == delim)
-	{
-	  if (escape_pending)
-	    strbuf += static_cast<char> (c);
-	  else
-	    {
-	      c = yyinput ();
-
-	      if (c == delim)
-		{
-		  strbuf += static_cast<char> (c);
-		  strbuf += static_cast<char> (c);
-		}
-	      else
-		{
-		  yyunput (c, yytext);
-		  strbuf += static_cast<char> (delim);
-		  return STRING;
-		}
-	    }
-	}
-      else
-	strbuf += static_cast<char> (c);
-
-      escape_pending = false;
-    }
-
-  throw gpt_parse_error ("unterminated string");
-
-  return 0;
-}
-
-// (Probably not necessesary, but current Matlab style plot functions
-// break without this (they emit too short gnuplot commands))
-
-static std::string
-plot_style_token (const std::string& s)
-{
-  std::string retval;
-
-  // FIXME -- specify minimum match length for these.
-  static const char *plot_styles[] =
-    {
-      "boxes",
-      "boxerrorbars",
-      "boxxyerrorbars",
-      "candlesticks",
-      "dots",
-      "errorbars",
-      "financebars",
-      "fsteps",
-      "histeps",
-      "impulses",
-      "lines",
-      "linespoints",
-      "points",
-      "steps",
-      "vector",
-      "xerrorbars",
-      "xyerrorbars",
-      "yerrorbars",
-      0,
-    };
-
-  const char * const *tmp = plot_styles;
-  while (*tmp)
-    {
-      if (almost_match (*tmp, s.c_str ()))
-	{
-	  retval = *tmp;
-	  break;
-	}
-
-      tmp++;
-    }
-
-  return retval;
-}
-
-// Some predicates on tokens
-
-// Return true for ":".
-
-static bool
-colonp (const int tok)
-{
-  return (tok == COLON);
-}
-
-// Return TRUE for "]".
-
-static bool
-endbracketp (const int tok)
-{
-  return (tok == END_BRACKET);
-}
-
-// Return TRUE for plot token, comma or end of input.
-
-static bool
-plottok_or_end_p (const int tok)
-{
-  return (tok == TITLE
-	  || tok == USING
-	  || tok == WITH
-	  || tok == AXES
-	  || tok == CLEAR
-	  || tok == COMMA
-	  || tok == 0);
-}
-
-// Equivalent to (colonp (tok) || plottok_or_end_p (tok)).
-
-static bool
-colon_plottok_or_end_p (const int tok)
-{
-  return (tok == COLON || plottok_or_end_p (tok));
-}
-
-// read until test is true and delimiters are balanced, or end of input.
-// Return the last token in lasttok
-
-static std::string
-read_until (pred test, int& lasttok) throw (gpt_parse_error)
-{
-  int tok;
-
-  // We have to maintain balanced delimiters per subexpression too.
-  int brackets = 0;
-  int parens = 0;
-  int braces = 0;
-  std::string s;
-
-  tok = gptlex ();
-
-  while (tok && ! (test (tok)
-		   && brackets == 0
-		   && parens == 0
-		   && braces == 0))
-    {
-      switch (tok)
-	{
-	case START_BRACKET:
-	  brackets++;
-	  break;
-
-	case END_BRACKET:
-	  brackets--;
-	  break;
-
-	case START_PAREN:
-	  parens++;
-	  break;
-
-	case END_PAREN:
-	  parens--;
-	  break;
-
-	case START_BRACE:
-	  braces++;
-	  break;
-
-	case END_BRACE:
-	  braces--;
-	  break;
-
-	default:
-	  break;
-        }
-
-      s += (tok == STRING ? strbuf : std::string (yytext)) + " ";
-
-      tok = gptlex ();
-    }
-
-  // Throw error only if we've reached the end token and the test
-  // doesn't accept it.
-
-  if (! test (tok) && ! tok)
-    throw gpt_parse_error ("unexpected end of input");
-
-  lasttok = tok;
-
-  return s;
-}
-
-// Eval the two expressions giving limits of range and print it.
-
-static std::string
-printrange (std::string starts, std::string ends)
-{
-  octave_value startv, endv;
-  int status;
-  std::string s;
-  std::ostringstream range_buf;
-
-  range_buf << "[";
-
-  if (! starts.empty ())
-    {
-      startv = eval_string (starts, true, status);
-      if (! startv.is_real_scalar ())
-	throw gpt_parse_error ();
-      startv.print_raw (range_buf);
-    }
-
-    range_buf << ":";
-
-    if (! ends.empty ())
-      {
-	endv = eval_string (ends, true, status);
-	if (! endv.is_real_scalar ())
-	  throw gpt_parse_error ();
-        endv.print_raw (range_buf);
-      }
-
-    range_buf << "]";
-
-    s = range_buf.str ();
-
-    return s;
-}
-
-// Handle plot parameters.
-
-// Parse, evaluate and print colon separated expressions in the using
-// plot parameter. The use of trailing format string is not supported.
-
-static std::string
-handle_using (int& lasttok)
-{
-  int tok;
-  std::string expr_str;
-  std::string retstr = Vgnuplot_command_using + " ";
-  bool out = false;
-
-  octave_value tmp_data;
-  int status;
-  while (! out)
-    {
-      expr_str = read_until (colon_plottok_or_end_p, tok);
-
-      if (! expr_str.empty () &&  expr_str[0] == '(')
-	retstr += expr_str;
-      else
-	{
-	  tmp_data = eval_string (expr_str, true, status);
-	  if (status != 0 || ! tmp_data.is_real_scalar ())
-	    throw gpt_parse_error ();
-
-	  std::ostringstream tmp_buf;
-	  tmp_data.print_raw (tmp_buf);
-	  retstr += tmp_buf.str ();
-	}
-
-      if (tok == COLON)
-	retstr += ":";
-      else
-	out = true;
-    }
-
-  lasttok = tok;
-
-  return retstr;
-}
-
-// Presently just passes the linewidth, pointtype etc. tokens as they are.
-
-static std::string
-handle_style (int& lasttok)
-{
-  std::string retstr = Vgnuplot_command_with + " ";
-  std::string style;
-
-  lasttok = gptlex ();
-
-  if (lasttok != IDENT)
-    throw gpt_parse_error ("expected plot style token");
-
-  style = std::string (yytext);
-  style = plot_style_token (style);
-
-  if (! style.empty ())
-    retstr += style;
-  else
-    retstr += std::string (yytext);
-
-  // FIXME -- should evaluate the remaining tokens, but this
-  // needs changes in the parser.
-  retstr += " " + read_until (plottok_or_end_p, lasttok);
-
-  return retstr;
-}
-
-// Axes has only one qualifier keyword, which is not evaluated.
-
-static std::string
-handle_axes (int& lasttok)
-{
-  return Vgnuplot_command_axes + " " + read_until (plottok_or_end_p, lasttok);
-}
-
-static void
-write_data (std::ostream& os, const octave_value& val,
-	    int ndim = 2, bool parametric = false,
-	    const std::string& name = std::string ())
-{
-  switch (ndim)
-    {
-    case 2:
-      save_ascii_data_for_plotting (os, val, name);
-      break;
-
-    case 3:
-      save_three_d (os, val, parametric);
-      break;
-
-    default:
-      gripe_2_or_3_dim_plot ();
-      break;
-    }
-}
-
-static void
-write_inline_data (std::ostream& os, const octave_value& val,
-		   int ndim = 2, bool parametric = false)
-{
-  write_data (os, val, ndim, parametric);
-  os << "e" << std::endl;
-}
-
-static std::string
-save_in_tmp_file (const octave_value& val, int ndim = 2,
-		  bool parametric = false)
-{
-  std::string name = file_ops::tempnam ("", "oct-");
-
-  if (! name.empty ())
-    {
-      std::ofstream file (name.c_str ());
-
-      if (file)
-	write_data (file, val, ndim, parametric, name);
-      else
-	{
-	  error ("couldn't open temporary output file `%s'", name.c_str ());
-	  name.resize (0);
-	}
-    }
-
-  return name;
-}
-
-#define WARN_OBSOLETE(nm) \
-  do \
-    { \
-      static bool warned = false; \
- \
-      if (! warned) \
-        { \
-          warning ("%s: this function is obsolete and will be removed from a future version of Octave", nm); \
- \
-          warned = true; \
-        } \
-    } \
-  while (0)
-
-DEFUN_DLD (__gnuplot_save_data__, args, ,
-  "-*- texinfo -*-\n\
-@deftypefn {Loadable Function} {} __gnuplot_save_data__ (@var{data}, @var{ndim}, @var{parametric})\n\
-@strong{This function is obsolete and will be removed from a future version\n\
-of Octave.}\n\
-@end deftypefn")
-{
-  octave_value retval;
-
-  int nargin = args.length ();
-
-  if (nargin > 0 && nargin < 4)
-    {
-      WARN_OBSOLETE ("__gnuplot_save_data__");
-
-      int ndim = 2;
-      bool parametric = false;
-
-      if (nargin > 1)
-	{
-	  ndim = args(1).int_value ();
-
-	  if (! error_state)
-	    {
-	      if (nargin > 2)
-		parametric = args(2).bool_value ();
-	    }
-	}
-
-      if (! error_state)
-	{
-	  std::string file = save_in_tmp_file (args(0), ndim, parametric);
-
-	  mark_for_deletion (file);
-
-	  retval = file;
-	}
-    }
-  else
-    print_usage ();
-
-  return retval;
-}
-
-static int
-get_current_figure (void)
-{
-  int retval = 1;
-
-  octave_value cf = get_global_value ("__current_figure__", true);
-
-  if (cf.is_defined ())
-    retval = cf.int_value ();
-  else
-    set_global_value ("__current_figure__", retval);
-
-  return retval;
-}
-
-class
-gnuplot
-{
-protected:
-
-  gnuplot (void)
-    : plot_line_count (0), parametric_plot (false), 
-      use_title_option (Vgnuplot_use_title_option),
-      gnuplot_exe (Vgnuplot_binary),
-      gnuplot_terminal_type (), plot_stream () { }
-
-public:
-
-  ~gnuplot (void) { }
-
-  static bool have_instance (void);
-
-  static bool ensure_instance (void);
-
-  static bool ensure_plot_stream (void);
-
-  static void open (void);
-
-  static void close (void);
-
-  static void close_all (void);
-
-  static bool plot_stream_event_handler (pid_t pid, int status);
-
-  static void send (const std::string& cmd)
-  {
-    if (ensure_plot_stream ())
-      instance->do_send (cmd);
-  }
-
-  static void send_raw (const std::string& cmd)
-  {
-    if (ensure_plot_stream ())
-      instance->do_send_raw (cmd);
-  }
-
-  static void send_inline_data (const octave_value& val, int ndim,
-				bool parametric)
-  {
-    if (ensure_plot_stream ())
-      instance->do_send_inline_data (val, ndim, parametric);
-  }
-
-  static void clear (void)
-  {
-    if (ensure_plot_stream ())
-      instance->do_clear ();
-  }
-
-  static void set (const string_vector& argv)
-  {
-    if (ensure_plot_stream ())
-      instance->do_set (argv);
-  }
-
-  static void show (const string_vector& argv)
-  {
-    if (ensure_plot_stream ())
-      instance->do_show (argv);
-  }
-
-  static void set_gnuplot_exe (const std::string& exe)
-  {
-    if (ensure_instance ())
-      instance->do_set_gnuplot_exe (exe);
-  }
-
-  static void set_gnuplot_use_title_option (bool opt)
-  {
-    if (ensure_instance ())
-      instance->do_set_gnuplot_use_title_option (opt);
-  }
-
-  // FIXME -- should only remove tmp files associated with
-  // gnuplot?
-  static void cleanup_tmp_files (void) { ::cleanup_tmp_files (); }
-
-  static void plot (const string_vector& argv)
-  {
-    if (ensure_plot_stream ())
-      instance->do_plot (argv);
-  }
-
-private:
-
-  static gnuplot *instance;
-
-  static std::map<int, gnuplot *> instance_map;
-
-  // The number of lines we've plotted so far.
-  int plot_line_count;
-
-  // Is this a parametric plot?  Makes a difference for 3D plotting.
-  bool parametric_plot;
-
-  // Should we append '-title "TITLE"' to the gnuplot command?
-  bool use_title_option;
-
-  // The executable program to run.
-  std::string gnuplot_exe;
-
-  // The gnuplot terminal type.
-  std::string gnuplot_terminal_type;
-
-  // Pipe to gnuplot.
-  oprocstream *plot_stream;
-
-  pid_t pid (void) const;
-
-  static gnuplot *lookup_by_pid (pid_t pid);
-
-  void do_open (void);
-
-  void do_close (void);
-
-  void delete_plot_stream (void);
-
-  void reset_plot_stream (void);
-
-  void do_send (const std::string& cmd);
-
-  void do_send_raw (const std::string& cmd);
-
-  void do_send_inline_data (const octave_value& val, int ndim,
-			    bool parametric);
-
-  void do_clear (void);
-
-  void do_set (const string_vector& argv);
-
-  void do_show (const string_vector& argv);
-
-  void do_set_gnuplot_exe (const std::string& exe) { gnuplot_exe = exe; }
-
-  void do_set_gnuplot_use_title_option (bool opt) { use_title_option = opt; }
-
-  void do_plot (const string_vector& argv);
-
-  std::string
-  makeplot (std::string caller, std::string args) throw (gpt_parse_error);
-
-  std::string handle_title (int& lasttok);
-};
-
-gnuplot *gnuplot::instance = 0;
-
-std::map<int, gnuplot *> gnuplot::instance_map;
-
-bool
-gnuplot::have_instance (void)
-{
-  int current_figure = get_current_figure ();
-
-  if (instance_map.find (current_figure) != instance_map.end ())
-    {
-      instance = instance_map[current_figure];
-      return true;
-    }
-  else
-    return false;
-}
-
-bool
-gnuplot::ensure_instance (void)
-{
-  if (! have_instance ())
-    {
-      instance = new gnuplot ();
-
-      if (! instance)
-	{
-	  ::error ("unable to create gnuplot object!");
-
-	  return false;
-	}
-      else
-	instance_map[get_current_figure ()] = instance;
-    }
-
-  return true;
-}
-
-bool
-gnuplot::ensure_plot_stream (void)
-{
-  if (ensure_instance ())
-    {
-      instance->do_open ();
-
-      if (error_state)
-	return false;
-    }
-
-  return true;
-}
-
-void
-gnuplot::close (void)
-{
-  if (have_instance ())
-    {
-      instance->do_close ();
-
-      instance_map.erase (get_current_figure ());
-    }
-}
-
-void
-gnuplot::close_all (void)
-{
-  for (std::map<int, gnuplot *>::const_iterator p = instance_map.begin ();
-       p != instance_map.end ();
-       p++)
-    {
-      gnuplot *elt = p->second;
-
-      elt->do_close ();
-    }
-}
-
-pid_t
-gnuplot::pid (void) const
-{
-  return plot_stream ? plot_stream->pid () : -1;
-}
-
-gnuplot *
-gnuplot::lookup_by_pid (pid_t pid)
-{
-  gnuplot *retval = 0;
-
-  for (std::map<int, gnuplot *>::const_iterator p = instance_map.begin ();
-       p != instance_map.end ();
-       p++)
-    {
-      gnuplot *elt = p->second;
-
-      if (elt && elt->pid () == pid)
-	{
-	  retval = elt;
-	  break;
-	}
-    }
-
-  return retval;
-}
-
-void
-gnuplot::do_open (void)
-{
-  static bool initialized = false;
-
-  if (plot_stream && ! *plot_stream)
-    do_close ();
-
-  if (! plot_stream)
-    {
-      initialized = false;
-
-      plot_line_count = 0;
-
-      std::string cmd;
-
-      if (gnuplot_exe.empty ())
-	cmd = "gnuplot";
-      else
-        cmd = "\"" + gnuplot_exe + "\"";
-
-      // FIXME -- I'm not sure this is the right thing to do,
-      // but without it, C-c at the octave prompt will kill gnuplot...
-
-#if defined (HAVE_POSIX_SIGNALS)
-      sigset_t nset, oset;
-      sigemptyset (&nset);
-      sigaddset (&nset, SIGINT);
-      sigprocmask (SIG_BLOCK, &nset, &oset);
-#else
-      volatile octave_interrupt_handler old_interrupt_handler
-	= octave_ignore_interrupts ();
-#endif
-
-      if (use_title_option)
-	{
-	  std::ostringstream buf;
-
-	  buf << cmd << " -title \"Figure " << get_current_figure () << "\"";
-
-	  cmd = buf.str ();
-	}
-
-      plot_stream = new oprocstream (cmd.c_str ());
-
-      if (plot_stream && *plot_stream)
-	octave_child_list::insert (plot_stream->pid (),
-				   plot_stream_event_handler);
-      else
-	{
-	  delete_plot_stream ();
-
-	  error ("plot: unable to open pipe to `%s'", cmd.c_str ());
-	}
-
-#if defined (HAVE_POSIX_SIGNALS)
-      sigprocmask (SIG_SETMASK, &oset, 0);
-#else
-      octave_set_interrupt_handler (old_interrupt_handler);
-#endif
-    }
-
-  if (! error_state && plot_stream && *plot_stream && ! initialized)
-    {
-      initialized = true;
-
-      do_send_raw ("set style data lines\n");
-
-      if (! gnuplot_terminal_type.empty ())
-	do_send_raw ("set term " + gnuplot_terminal_type
-		     + Vgnuplot_command_end + "\n");
-    }
-}
-
-void
-gnuplot::delete_plot_stream (void)
-{
-  do_send_raw ("\nquit\n");
-
-  delete plot_stream;
-  plot_stream = 0;
-}
-
-void
-gnuplot::reset_plot_stream (void)
-{
-  delete_plot_stream ();
-
-  plot_line_count = 0;
-  parametric_plot = false;
-}
-
-void
-gnuplot::do_close (void)
-{
-  if (plot_stream)
-    {
-      octave_child_list::remove (plot_stream->pid ());
-
-      delete_plot_stream ();
-    }
-
-  plot_line_count = 0;
-}
-
-bool
-gnuplot::plot_stream_event_handler (pid_t pid, int status)
-{
-  bool retval = false;
-
-  if (pid > 0)
-    {
-      if (WIFEXITED (status) || WIFSIGNALLED (status))
-	{
-	  gnuplot *plotter = gnuplot::lookup_by_pid (pid);
-
-	  // We should only print a warning or request removal of the
-	  // process from the child list if the process died
-	  // unexpectedly.  If do_close is responsible for
-	  // gnuplot's death, then plotter will be 0 here and we don't
-	  // need to do anything.
-
-	  if (plotter)
-	    {
-	      plotter->reset_plot_stream ();
-
-	      warning ("connection to external plotter (pid = %d) lost --", pid);
-	      // Request removal of this PID from the list of child
-	      // processes.
-
-	      retval = true;
-	    }
-	}
-    }
-
-  return retval;
-}
-
-void
-gnuplot::do_send (const std::string& cmd)
-{
-  int replot_len = Vgnuplot_command_replot.length ();
-
-  bool is_replot = (Vgnuplot_command_replot == cmd.substr (0, replot_len));
-
-  if (! (plot_line_count == 0 && is_replot))
-    do_send_raw (cmd);
-}
-
-void
-gnuplot::do_send_raw (const std::string& cmd)
-{
-  if (plot_stream && *plot_stream)
-    {
-      *plot_stream << cmd;
-
-      plot_stream->flush ();
-    }
-}
-
-void
-gnuplot::do_send_inline_data (const octave_value& val, int ndim,
-			      bool parametric)
-{
-  if (plot_stream && *plot_stream)
-    {
-      write_inline_data (*plot_stream, val, ndim, parametric);
-
-      plot_stream->flush ();
-    }
-}
-
-void
-gnuplot::do_clear (void)
-{
-  do_send_raw ("clear\n");
-
-  // FIXME -- instead of just clearing these things, it would
-  // be nice if we could reset things to a user-specified default
-  // state.
-
-  do_send_raw ("set title\n");
-  do_send_raw ("set xlabel\n");
-  do_send_raw ("set ylabel\n");
-  do_send_raw ("set nogrid\n");
-  do_send_raw ("set nolabel\n");
-
-  // This makes a simple `replot' not work after a `clearplot' command
-  // has been issued.
-
-  plot_line_count = 0;
-}
-
-void
-gnuplot::do_set (const string_vector& argv)
-{
-  int argc = argv.length ();
-
-  std::ostringstream plot_buf;
-
-  if (argc > 1)
-    {
-      if (almost_match ("parametric", argv[1], 3))
-	parametric_plot = true;
-      else if (almost_match ("noparametric", argv[1], 5))
-	parametric_plot = false;
-      else if (almost_match ("term", argv[1], 1))
-	{
-	  gnuplot_terminal_type = "";
-	  std::ostringstream buf;
-	  int i;
-	  for (i = 2; i < argc-1; i++)
-	    buf << argv[i] << " ";
-	  if (i < argc)
-	    buf << argv[i];
-	  buf << Vgnuplot_command_end;
-	  gnuplot_terminal_type = buf.str ();
-	}
-    }
-
-  int i;
-  for (i = 0; i < argc-1; i++)
-    plot_buf << argv[i] << " ";
-
-  if (i < argc)
-    plot_buf << argv[i];
-
-  plot_buf << Vgnuplot_command_end;
-
-  do_send_raw (plot_buf.str ());
-}
-
-void
-gnuplot::do_show (const string_vector& argv)
-{
-  int argc = argv.length ();
-
-  std::ostringstream plot_buf;
-
-  int i;
-  for (i = 0; i < argc-1; i++)
-    plot_buf << argv[i] << " ";
-  if (i < argc)
-    plot_buf << argv[i];
-
-  plot_buf << Vgnuplot_command_end;
-
-  do_send (plot_buf.str ());
-}
-
-void
-gnuplot::do_plot (const string_vector& argv)
-{
-  std::string s;
-
-  for (int i = 1; i < argv.length (); i++)
-    s += argv[i] + " ";
-
-  try
-    {
-      std::string cmd = makeplot (argv[0], s);
-
-      do_send (cmd);
-    }
-  catch (gpt_parse_error& e)
-    {
-      if (e.msg.empty ())
-	error ("could not parse plot command");
-      else
-	error (e.msg.c_str ());
-    }
-}
-
-// Parse and evaluate parameter string and pass it to gnuplot pipe.
-
-std::string
-gnuplot::makeplot (std::string caller, std::string args)
-  throw (gpt_parse_error)
-{
-  std::string retval;
-
-  YY_BUFFER_STATE bstate;
-
-  bstate = yy_scan_string (args.c_str ());
-  yy_switch_to_buffer (bstate);
-  std::string outstr;
-  int ndim = 2;
-
-  if (caller == "replot")
-    {
-      ndim = 1;
-      outstr += Vgnuplot_command_replot + " ";
-    }
-  else if (caller == "plot")
-    {
-      ndim = 2;
-      plot_line_count = 0;
-      outstr += Vgnuplot_command_plot + " ";
-    }
-  else if (caller == "splot")
-    {
-      ndim = 3;
-      plot_line_count = 0;
-      outstr += Vgnuplot_command_splot + " ";
-    }
-  else
-    throw gpt_parse_error ("unknown plot command");
-
-  gpt_quote_is_transpose = false;
-  gpt_allow_plotkw = false;
-  gpt_parens = 0;
-  gpt_braces = 0;
-  gpt_brackets = 0;
-
-  int tok;
-  tok = gptlex ();
-  if (plottok_or_end_p (tok) && caller != "replot")
-    throw gpt_parse_error ("must have something to plot");
-
-  while (tok)
-    {
-      bool title_set = false;
-      bool using_set = false;
-      bool style_set = false;
-      bool axes_set = false;
-
-      if (tok == START_BRACKET)
-	{
-	  if (caller == "replot")
-	    throw gpt_parse_error ("can't specify new plot ranges with `replot' or while hold is on");
-
-	  std::string xrange_start_str = read_until (colonp, tok);
-	  std::string xrange_end_str = read_until (endbracketp, tok);
-	  outstr += printrange (xrange_start_str, xrange_end_str) + " ";
-	  tok = gptlex ();
-	  if (tok == START_BRACKET)
-	    {
-	      std::string yrange_start_str = read_until (colonp, tok);
-	      std::string yrange_end_str = read_until (endbracketp, tok);
-	      outstr += printrange (yrange_start_str, yrange_end_str) + " ";
-	      tok = gptlex ();
-	      if (tok == START_BRACKET && caller == "splot")
-		{
-		  std::string zrange_start_str = read_until (colonp, tok);
-		  std::string zrange_end_str = read_until (endbracketp, tok);
-		  outstr += printrange (zrange_start_str, zrange_end_str) + " ";
-		  tok = gptlex ();
-                }
-            }
-        }
-
-      if (plottok_or_end_p (tok))
-	return std::string ();
-      else
-	{
-	  std::string file;
-	  plot_line_count++;
-
-	  std::string plot_expr_str;
-	  plot_expr_str += std::string (yytext) + " ";
-	  plot_expr_str += read_until (plottok_or_end_p, tok);
-
-	  int status = 0;
-	  octave_value tmp_data = eval_string (plot_expr_str,
-					       true, status);
-
-	  if (status != 0 || ! tmp_data.is_defined ())
-	    throw gpt_parse_error ();
-
-	  std::ostringstream tmp_buf;
-	  tmp_data.print_raw (tmp_buf);
-
-	  if (tmp_data.is_string ())
-	    {
-	      file = file_ops::tilde_expand (tmp_data.string_value ());
-	      // FIXME -- perhaps should check if the file exists?
-	      outstr += file + " ";
-	    }
-	  else
-	    {
-	      switch (ndim)
-		{
-		case 2:
-		  file = save_in_tmp_file (tmp_data, ndim);
-		  break;
-
-		case 3:
-		  file = save_in_tmp_file (tmp_data, ndim,
-					   parametric_plot);
-		  break;
-
-		default:
-		  gripe_2_or_3_dim_plot ();
-		  break;
-		}
-
-	      if (file.length () > 0)
-		{
-		  mark_for_deletion (file);
-		  outstr += "'" + file + "' ";
-		}
-	    }
-        }
-
-      std::string title_str;
-      std::string using_str;
-      std::string style_str;
-      std::string axes_str;
-
-      bool out = false;
-      while (tok && ! out)
-	{
-	  switch (tok)
-	    {
-	    case COMMA:
-	      out = true;
-	      break;
-
-	    case TITLE:
-	      if (! title_set)
-		title_str += handle_title (tok) + " ";
-	      else
-		throw gpt_parse_error ("only one title option may be specified");
-	      title_set = true;
-	      break;
-
-	    case USING:
-	      if (! using_set)
-		using_str += handle_using (tok) + " ";
-	      else
-		throw gpt_parse_error ("only one using option may be specified");
-	      using_set = true;
-	      break;
-
-	    case WITH:
-	      if (! style_set)
-		style_str += handle_style (tok) + " ";
-	      else
-		throw gpt_parse_error ("only one style option may be specified");
-	      style_set = true;
-	      break;
-
-	    case AXES:
-	      if (! axes_set)
-		axes_str += handle_axes (tok) + " ";
-	      else
-		throw gpt_parse_error ("only one axes option may be specified");
-	      axes_set = true;
-	      break;
-
-	    default:
-	      tok = 0;
-	      break;
-            }
-        }
-
-        if (! title_set)
-	  {
-            std::ostringstream tmp_buf;
-            tmp_buf << Vgnuplot_command_title << " \"line "
-                    << plot_line_count << "\" ";
-            title_str = tmp_buf.str ();
-	    title_set = true;
-        }
-
-	// Plot parameters have to be output in this order.
-	if (using_set)
-	  outstr += using_str;
-
-	if (axes_set)
-	  outstr += axes_str;
-
-	if (title_set)
-	  outstr += title_str;
-
-	if (style_set)
-	  outstr += style_str;
-
-	if (out)
-	  {
-	    // Saw comma on while loop.
-            outstr += ", ";
-            gpt_quote_is_transpose = false;
-            gpt_allow_plotkw = false;
-            gpt_parens = 0;
-            gpt_braces = 0;
-            gpt_brackets = 0;
-            tok = gptlex ();
-	  }
-    }
-
-  outstr += Vgnuplot_command_end;
-
-  return outstr;
-}
-
-// Title has one string expression which is evaluated and printed to the
-// gnuplot command string.
-
-std::string
-gnuplot::handle_title (int& lasttok)
-{
-  int tok;
-  std::string retstr = Vgnuplot_command_title + " ";
-  std::string title_expr_str;
-
-  title_expr_str += read_until (plottok_or_end_p, tok);
-
-  int status;
-  octave_value tmp_data = eval_string (title_expr_str, true, status);
-
-  if (status != 0 || ! tmp_data.is_defined ())
-    throw gpt_parse_error ();
-
-  std::ostringstream tmp_buf;
-  if (tmp_data.is_string ())
-    {
-      tmp_buf << '"';
-      tmp_data.print_raw (tmp_buf);
-      tmp_buf << '"';
-    }
-  else
-    {
-      warning ("line title must be a string");
-      tmp_buf << '"' << "line " << plot_line_count << '"';
-    }
-
-  retstr += tmp_buf.str ();
-
-  lasttok = tok;
-
-  return retstr;
-}
-
-// The static instance of this class is here so that
-// gnuplot::close_all will be called when the .oct file is unloaded.
-
-class
-gnuplot_X
-{
-public:
-  gnuplot_X (void) { }
-  ~gnuplot_X (void) { gnuplot::close_all (); }
-};
-
-static gnuplot_X X;
-
-// -----------------------
-// User-callable functions
-// -----------------------
-
-DEFUN_DLD (gnuplot_binary, args, nargout,
-  "-*- texinfo -*-\n\
-@deftypefn {Loadable Function} {@var{val} =} gnuplot_binary ()\n\
-@deftypefnx {Loadable Function} {@var{old_val} =} gnuplot_binary (@var{new_val})\n\
-Query or set the name of the program invoked by the plot command.\n\
-The default value @code{\"gnuplot\"}.  @xref{Installation}.\n\
-@end deftypefn")
-{
-  octave_value retval = SET_INTERNAL_VARIABLE (gnuplot_binary);
-
-  if (! error_state && args.length () == 1)
-    gnuplot::set_gnuplot_exe (Vgnuplot_binary);
-
-  return retval;
-}
-
-DEFUN_DLD (gnuplot_command_plot, args, nargout,
-  "-*- texinfo -*-\n\
-@deftypefn {Loadable Function} {@var{val} = } gnuplot_command_plot ()\n\
-@deftypefnx {Loadable Function} {@var{old_val} = } gnuplot_command_plot (@var{new_val})\n\
-@strong{This function is obsolete and will be removed from a future version\n\
-of Octave.}\n\
-@end deftypefn")
-{
-  WARN_OBSOLETE ("gnuplot_command_plot");
-
-  return SET_INTERNAL_VARIABLE (gnuplot_command_plot);
-}
-
-DEFUN_DLD (gnuplot_command_replot, args, nargout,
-  "-*- texinfo -*-\n\
-@deftypefn {Loadable Function} {@var{val} =} gnuplot_command_replot ()\n\
-@deftypefnx {Loadable Function} {@var{old_val} =} gnuplot_command_replot (@var{new_val})\n\
-@strong{This function is obsolete and will be removed from a future version\n\
-of Octave.}\n\
-@end deftypefn")
-{
-  WARN_OBSOLETE ("gnuplot_command_replot");
-
-  return SET_INTERNAL_VARIABLE (gnuplot_command_replot);
-}
-
-DEFUN_DLD (gnuplot_command_splot, args, nargout,
-  "-*- texinfo -*-\n\
-@deftypefn {Loadable Function} {@var{val} =} gnuplot_command_splot ()\n\
-@deftypefnx {Loadable Function} {@var{old_val} =} gnuplot_command_splot (@var{new_val})\n\
-@strong{This function is obsolete and will be removed from a future version\n\
-of Octave.}\n\
-@end deftypefn")
-{
-  WARN_OBSOLETE ("gnuplot_command_splot");
-
-  return SET_INTERNAL_VARIABLE (gnuplot_command_splot);
-}
-
-DEFUN_DLD (gnuplot_command_using, args, nargout,
-  "-*- texinfo -*-\n\
-@deftypefn {Loadable Function} {@var{val} =} gnuplot_command_using ()\n\
-@deftypefnx {Loadable Function} {@var{old_val} =} gnuplot_command_using (@var{new_val})\n\
-@strong{This function is obsolete and will be removed from a future version\n\
-of Octave.}\n\
-@end deftypefn")
-{
-  WARN_OBSOLETE ("gnuplot_command_using");
-
-  return SET_INTERNAL_VARIABLE (gnuplot_command_using);
-}
-
-DEFUN_DLD (gnuplot_command_with, args, nargout,
-  "-*- texinfo -*-\n\
-@deftypefn {Loadable Function} {@var{val} =} gnuplot_command_with ()\n\
-@deftypefnx {Loadable Function} {@var{old_val} =} gnuplot_command_with (@var{new_val})\n\
-@strong{This function is obsolete and will be removed from a future version\n\
-of Octave.}\n\
-@end deftypefn")
-{
-  WARN_OBSOLETE ("gnuplot_command_with");
-
-  return SET_INTERNAL_VARIABLE (gnuplot_command_with);
-}
-
-DEFUN_DLD (gnuplot_command_axes, args, nargout,
-  "-*- texinfo -*-\n\
-@deftypefn {Loadable Function} {@var{val} =} gnuplot_command_axes ()\n\
-@deftypefnx {Loadable Function} {@var{old_val} =} gnuplot_command_axes (@var{new_val})\n\
-@strong{This function is obsolete and will be removed from a future version\n\
-of Octave.}\n\
-@end deftypefn")
-{
-  WARN_OBSOLETE ("gnuplot_command_axes");
-
-  return SET_INTERNAL_VARIABLE (gnuplot_command_axes);
-}
-
-DEFUN_DLD (gnuplot_command_title, args, nargout,
-  "-*- texinfo -*-\n\
-@deftypefn {Loadable Function} {@var{val} =} gnuplot_command_title ()\n\
-@deftypefnx {Loadable Function} {@var{old_val} =} gnuplot_command_title (@var{new_val})\n\
-@strong{This function is obsolete and will be removed from a future version\n\
-of Octave.}\n\
-@end deftypefn")
-{
-  WARN_OBSOLETE ("gnuplot_command_title");
-
-  return SET_INTERNAL_VARIABLE (gnuplot_command_title);
-}
-
-DEFUN_DLD (gnuplot_command_end, args, nargout,
-  "-*- texinfo -*-\n\
-@deftypefn {Loadable Function} {@var{val} =} gnuplot_command_end ()\n\
-@deftypefnx {Loadable Function} {@var{old_val} =} gnuplot_command_end (@var{new_val})\n\
-@strong{This function is obsolete and will be removed from a future version\n\
-of Octave.}\n\
-\n\
-@end deftypefn")
-{
-  WARN_OBSOLETE ("gnuplot_command_end");
-
-  return SET_INTERNAL_VARIABLE (gnuplot_command_end);
-}
-
-DEFUN_DLD (gnuplot_use_title_option, args, nargout,
-  "-*- texinfo -*-\n\
-@deftypefn {Loadable Function} {@var{val} =} gnuplot_use_title_option ()\n\
-@deftypefnx {Loadable Function} {@var{old_val} =} gnuplot_use_title_option (@var{new_val})\n\
-If enabled, append @samp{-title \"Figure NN\"} to the gnuplot command.\n\
-By default, this feature is enabled if the @code{DISPLAY} environment\n\
-variable is set when Octave starts.\n\
-\n\
-@strong{This function is obsolete and will be removed from a future version\n\
-of Octave.}\n\
-@end deftypefn")
-{
-  WARN_OBSOLETE ("gnuplot_command_use_title_option");
-
-  return SET_INTERNAL_VARIABLE (gnuplot_use_title_option);
-}
-
-DEFUN_DLD (__clear_plot_window__, , ,
-  "-*- texinfo -*-\n\
-@deftypefn {Loadable Function} {} clearplot\n\
-@deftypefnx {Loadable Function} {} clg\n\
-Clear the plot window and any titles or axis labels.\n\
-\n\
-@strong{This function is obsolete and will be removed from a future version\n\
-of Octave.}\n\
-@end deftypefn")
-{
-  WARN_OBSOLETE ("__clear_plot_window__");
-
-  gnuplot::clear ();
-
-  return octave_value_list ();
-}
-
-DEFUN_DLD (closeplot, , ,
-  "-*- texinfo -*-\n\
-@deftypefn {Loadable Function} {} closeplot\n\
-@strong{This function is obsolete and will be removed from a future version\n\
-of Octave.}\n\
-\n\
-Close stream to the @code{gnuplot} subprocess.  If you are using X11,\n\
-this will close the plot window.\n\
-@seealso{close}\n\
-@end deftypefn")
-{
-  WARN_OBSOLETE ("closeplot");
-
-  gnuplot::close ();
-
-  return octave_value_list ();
-}
-
-DEFUN_DLD (purge_tmp_files, , ,
-  "-*- texinfo -*-\n\
-@deftypefn {Loadable Function} {} purge_tmp_files\n\
-Delete the temporary files created by the plotting commands.\n\
-\n\
-Octave creates temporary data files for @code{gnuplot} and then sends\n\
-commands to @code{gnuplot} through a pipe.  Octave will delete the\n\
-temporary files on exit, but if you are doing a lot of plotting you may\n\
-want to clean up in the middle of a session.\n\
-\n\
-@strong{This function is obsolete and will be removed from a future version\n\
-of Octave.}\n\
-@end deftypefn")
-{
-  WARN_OBSOLETE ("purge_tmp_files");
-
-  gnuplot::cleanup_tmp_files ();
-
-  return octave_value_list ();
-}
- 
-DEFUN_DLD (__gnuplot_raw__, args, ,
-  "-*- texinfo -*-\n\
-@deftypefn {Loadable Function} {} __gnuplot_raw__ (@var{string})\n\
-Send @var{string} directly to gnuplot subprocess.\n\
-\n\
-@strong{This function is obsolete and will be removed from a future version\n\
-of Octave.}\n\
-@end deftypefn")
-{
-  if (args.length () == 1 && args(0).is_string ())
-    {
-      WARN_OBSOLETE ("__gnuplot_raw__");
-
-      std::string cmd = args(0).string_value ();
-
-      gnuplot::send_raw (cmd);
-    }
-  else
-    print_usage ();
-
-  return octave_value_list ();
-}
-
-DEFUN_DLD (__gnuplot_send_inline_data__, args, ,
-  "-*- texinfo -*-\n\
-@deftypefn {Loadable Function} {} __gnuplot_send_inline_data__ (@var{data}, @var{ndim}, @var{parametric})\n\
-Send @var{val} to gnuplot subprocess as inline data.\n\
-\n\
-@strong{This function is obsolete and will be removed from a future version\n\
-of Octave.}\n\
-@end deftypefn")
-{
-  octave_value retval;
-
-  int nargin = args.length ();
-
-  if (nargin > 0 && nargin < 4)
-    {
-      WARN_OBSOLETE ("__gnuplot_send_inline_data__");
-
-      int ndim = 2;
-      bool parametric = false;
-
-      if (nargin > 1)
-	{
-	  ndim = args(1).int_value ();
-
-	  if (! error_state)
-	    {
-	      if (nargin > 2)
-		parametric = args(2).bool_value ();
-	    }
-	}
-
-      if (! error_state)
-	gnuplot::send_inline_data (args(0), ndim, parametric);
-    }
-  else
-    print_usage ();
-
-  return retval;
-}
-
-DEFUN_DLD (__gnuplot_set__, args, ,
-  "-*- texinfo -*-\n\
-@deffn {Loadable Function} __gnuplot_set__ options\n\
-Set plotting options for gnuplot\n\
-\n\
-@strong{This function is obsolete and will be removed from a future version\n\
-of Octave.}\n\
-@end deffn")
-{
-  WARN_OBSOLETE ("__gnuplot_set__");
-
-  string_vector argv = args.make_argv ("set");
-
-  if (! error_state)
-    gnuplot::set (argv);
-
-  return octave_value_list ();
-}
-
-DEFUN_DLD (__gnuplot_show__, args, ,
-  "-*- texinfo -*-\n\
-@deffn {Loadable Function} __gnuplot_show__ options\n\
-Show plotting options.\n\
-\n\
-@strong{This function is obsolete and will be removed from a future version\n\
-of Octave.}\n\
-@end deffn")
-{
-  WARN_OBSOLETE ("__gnuplot_show__");
-
-  string_vector argv = args.make_argv ("show");
-
-  if (! error_state)
-    gnuplot::show (argv);
-
-  return octave_value_list ();
-}
-
-DEFUN_DLD (__gnuplot_plot__, args, ,
-  "-*- texinfo -*-\n\
-Plot with gnuplot.\n\
-\n\
-@strong{This function is obsolete and will be removed from a future version\n\
-of Octave.}")
-{
-  WARN_OBSOLETE ("__gnuplot_plot__");
-
-  string_vector argv = args.make_argv ("plot");
-
-  if (! error_state)
-    gnuplot::plot (argv);
-
-  return octave_value_list ();
-}
-
-DEFUN_DLD (__gnuplot_splot__, args, ,
-  "-*- texinfo -*-\n\
-Plot with gnuplot.\n\
-\n\
-@strong{This function is obsolete and will be removed from a future version\n\
-of Octave.}")
-{
-  WARN_OBSOLETE ("__gnuplot_splot__");
-
-  string_vector argv = args.make_argv ("splot");
-
-  if (! error_state)
-    gnuplot::plot (argv);
-
-  return octave_value_list ();
-}
-
-DEFUN_DLD (__gnuplot_replot__, args, ,
-  "-*- texinfo -*-\n\
-Plot with gnuplot.\n\
-\n\
-@strong{This function is obsolete and will be removed from a future version\n\
-of Octave.}")
-{
-  WARN_OBSOLETE ("__gnuplot_replot__");
-
-  string_vector argv = args.make_argv ("replot");
-
-  if (! error_state)
-    gnuplot::plot (argv);
-
-  return octave_value_list ();
-}
-
-/*
-;;; Local Variables: ***
-;;; mode: C++ ***
-;;; End: ***
-*/

--- a/src/Makefile.in	Thu Jan 10 19:28:38 2008 +0000
+++ b/src/Makefile.in	Thu Jan 10 22:38:26 2008 +0000
@@ -71,7 +71,7 @@
 	spchol.cc spdet.cc spfind.cc spkron.cc splu.cc spparms.cc spqr.cc \
 	sqrtm.cc svd.cc syl.cc symrcm.cc time.cc tsearch.cc typecast.cc \
 	urlwrite.cc __contourc__.cc __delaunayn__.cc __dsearchn__.cc \
-	__gnuplot_raw__.l __glpk__.cc __lin_interpn__.cc __pchip_deriv__.cc \
+	__glpk__.cc __lin_interpn__.cc __pchip_deriv__.cc \
 	__qp__.cc __voronoi__.cc
 
 DLD_SRC := $(addprefix DLD-FUNCTIONS/, $(DLD_XSRC))
@@ -271,7 +271,6 @@
    $(FFTW_LIBS) $(LIBS) $(FLIBS)
 
 BUILT_DISTFILES = DOCSTRINGS oct-gperf.h parse.cc lex.cc y.tab.h \
-	__gnuplot_raw__.cc \
 	$(OPT_HANDLERS) $(BUILT_EXTRAS)
 
 DISTFILES = Makefile.in ChangeLog genprops.awk mkdefs mkops mkgendoc \
@@ -285,7 +284,7 @@
 
 objects: $(OBJECTS)
 
-lex.o parse.o __gnuplot_raw__.o pic/lex.o pic/parse.o pic/__gnuplot_raw__.o: \
+lex.o parse.o pic/lex.o pic/parse.o: \
 	ALL_CXXFLAGS := $(filter-out -Wold-style-cast, $(ALL_CXXFLAGS))
 
 $(DLD_PICOBJ): \
@@ -329,7 +328,7 @@
 	rm -f $@
 	$(SH_LD) $(SH_LDFLAGS) $(SONAME_FLAGS) -o $@ $^ $(OCTINTERP_LINK_DEPS)
 
-stamp-prereq: defaults.h graphics.h oct-conf.h oct-gperf.h parse.cc lex.cc __gnuplot_raw__.cc $(OPT_HANDLERS)
+stamp-prereq: defaults.h graphics.h oct-conf.h oct-gperf.h parse.cc lex.cc $(OPT_HANDLERS)
 	touch stamp-prereq
 
 octave$(EXEEXT): stamp-prereq $(LIBRARIES) main.o $(DLD_STATIC_OBJ)
@@ -531,7 +530,7 @@
 
 maintainer-clean: distclean
 	rm -f tags TAGS y.tab.c y.tab.h y.output yy.lex.c lex.cc parse.cc
-	rm -f oct-gperf.h __gnuplot_raw__.cc $(OPT_HANDLERS)
+	rm -f oct-gperf.h $(OPT_HANDLERS)
 .PHONY: maintainer-clean
 
 dist: parse.cc lex.cc oct-gperf.h
@@ -578,10 +577,6 @@
 	$(LEX) $(LFLAGS) $< > $(@F)-t
 	@$(builddir-move-if-change-rule)
 
-__gnuplot_raw__.cc : DLD-FUNCTIONS/__gnuplot_raw__.l
-	$(LEX) $(LFLAGS) $< > $(@F)-t
-	@$(builddir-move-if-change-rule)
-
 ## We want to force an update of defaults.h and oct-conf.h every
 ## time make is run because some values may come from the command
 ## line or the environment.  The substitution rules use move-if-change,