2004-07-28  Teemu Ikonen  <address@hidden>

	* gnuplot.l: New file. Move gnuplot interface here from the parser.
	* pt-plot.cc, pt-plot.h: Delete.
        * Makefile.in: Remove references to pt-plot.*. Add support for 
	rawcommands and the new gnuplot code and an option for 
	disabling gnuplot support in the build.
	* octave.cc, pt-all.h: Remove references to pt-plot.*
	* defun-int.h: Add support for DEFRAWCMD macro.
	* defun.cc: Likewise.
	* defun.h: Likewise.
	* mkbuiltins: Likewise.
	* mkgendoc: Likewise.
        * dirfns.cc: Remove reference to pt-plot.h, 
	(octave_change_to_directory): Comment out the call to
	do_external_plotter_cd, at least for now.
	* file-io.cc: Remove reference to pt-plot.h.
	Add tmp-file handling from pt-plot.cc here.
	(tmp_files): Move to file-io.cc.
	(fprintf): Remove unused variable return_char_count.
	(save_in_tmp_file): Move to file-io.cc.
	(mark_for_deletion): Move to file-io.cc.
	(cleanup_tmp_files): Move to file-io.cc.
	* file-io.h: Add definitions for new functions in file-io.cc
	* help.cc: Remove help strings for gplot and gsplot.
	* lex.h, lex.l: Remove everything plotting related, add support for
	rawcommands.
	(doing_rawcommand): New lexical_feedback variable
	* ls-oct-ascii.cc: Remove reference to non-existant file 
	tree-plot.cc from a comment.
	* octave.gperf: Remove plotting keywords.
	* parse.y: Remove plotting related grammar.
	(make_plot_command): Delete.	
	* pt-bp.cc: (tree_breakpoint::visit_plot_command,
        tree_breakpoint::visit_plot_limits, tree_breakpoint::visit_plot_range,
	tree_breakpoint::visit_subplot, tree_breakpoint::visit_subplot_axes,
	tree_breakpoint::visit_subplot_list, 
	tree_breakpoint::visit_subplot_style, 
	tree_breakpoint::visit_subplot_using): Delete
	* pt-bp.h: Likewise.
        * pt-check.cc: (tree_checker::visit_plot_command,
        tree_checker::visit_plot_limits, tree_checker::visit_plot_range,
	tree_checker::visit_subplot, tree_checker::visit_subplot_axes,
	tree_checker::visit_subplot_list, tree_checker::visit_subplot_style,
	tree_checker::visit_subplot_using): Delete.
	* pt-check.h: Likewise.
	* pt-pr-code.cc: (tree_print_code::visit_plot_command,
	tree_print_code::visit_plot_limits, tree_print_code::visit_plot_range,
	tree_print_code::visit_subplot, tree_print_code::visit_subplot_axes,
	tree_print_code::visit_subplot_list, 
	tree_print_code::visit_subplot_style, 
	tree_print_code::visit_subplot_using): Delete.
	* pt-pr-code.h: Likewise.
	* pt-walk.h: Remove references to plotting related classes and
	functions
	* symtab.h: Add support for rawcommands. 
	(symbol_record::void mark_as_rawcommand, 
	symbol_record::unmark_rawcommand, symbol_record::is_rawcommand):
	New functions.
	* token.cc: (token::token (plot_tok_type t, int l, int c), 
	token::pttype): Delete.
	* token.h: (plot_tok_type): Delete.
	* toplev.cc: Remove reference to pt-plot.h, 
	(do_octave_atexit): Remove call to close_plot_stream().
	* variables.cc: (mark_as_command, unmark_command): Documentation 
	fixes. (iscommand, mark_as_rawcommand, unmark_rawcommand, 
	israwcommand): New command style functions.
	(is_marked_as_rawcommand, mark_as_rawcommand,
	unmark_rawcommand, is_rawcommand_name): New functions.
	(rawcommand_set): New variable.
	variables.h: Add is_rawcommand_name.