This is the ChangeLog covering gnuplot development between November 2006
(version 4.2-rc1) and November 2009 (4.4-rc1).
========================================================================
2009-10-17  Ethan A Merritt  

	* src/plot3d.c: Initialize each new surface in a 3d dataset directly
	from the first surface.
	Bug #2876167

2009-10-14  Shigeharu Takeno  

	* docs/gnuplot-ja.doc docs/term-ja.diff:
	Sync Japanese documentation to gnuplot.doc rev 1.585

2009-10-10  Jost Brachert  

	* src/datafile.c (plot_option_index) docs/gnuplot.doc:
	Allow a blank trailing index spec to indicate "until end of file".

2009-10-10  Alexander Tschner  

	* src/tabulate.c:  Fix tabular output of log scale data.
	Bug #2849166

2009-10-09  Thomas Sefzick  

	* term/latex.trm:  Add an option for rotated text in the old latex
	terminal.  'set term latex rotate' enables it and turns off the 
	previous 'stacked' y-label mechanism.

2009-10-08  Ethan A Merritt  

	* src/graphics.c (plot_image_or_update_axes) demo/imageNaN.dem: 
	NaN/Inf values in the input are processed differently depending on
	whether they are read directly from the input file or generated by an 
	input expression.  Both cases should be treated equivalently for the
	purpose of IMAGE rendering.  
	NB: Fixes 2D case but not 3D case, as shown by revised imageNaN demo.
	Bug #2875069

2009-10-08  Ethan A Merritt  

	* FAQ.pdf Makefile.am: FAQ.pdf replaces outdated FAQ

	* src/graph3d.c (do_3dplot): Explicit 'set xyplane at ' should
	be honored even if the x and y tics are turned off.
	Bugfix

	* src/graph3d.c (plot3drequest): Fixes spurious error from old tics,
	e.g.  "set ytics ("Bug" 0); unset ytics; set ytics; splot x*y"

2009-10-06  Shigeharu Takeno  

	* src/term.c (term_start_multiplot): Accept an explicit font for
	the multiplot title.

2009-10-06  Ethan A Merritt  

	* term/gd.trm: Silence a compiler warning if gdUseFontConfig() is
	defined to be 0.

	* demo/html/webify.pl demo/html/webify_svg.pl demo/html/webify_canvas.pl
	If GNUPLOT_LIB is not defined, set it to ..
	Bug #2868958

2009-10-06  Tatsuro Matsuoka  

	* config/makeile.mgw:  Override the -mwindows compilation flag 
	provided by wx-config.

2009-09-17  Ethan A Merritt  

	* term/canvas.trm (CANVAS_graphics): Be wary of uninitialized
	global variables when setting up the mouse event handler.

2009-09-17  Hans-Bernhard Broeker  

	* src/win/winmain.c (MyFPrintF, MyVFPrintF, MyPrintF): Cannot call
	va_list functions twice with the same va_list.  Have to call a
	pair of va_end() and either va_start() or va_copy() in between.

2009-09-16  Benjamin Lindner   

	* term/emf.trm (ENHemf_FLUSH): Possible fix for the problem of
	Windows utilities not properly displaying files created by
	enhaced text mode.  Bug #2744404

2009-09-13  Ethan A Merritt  

	* src/term_api.h src/set.c (set_termoptions): Clean up the code for
	'set termoption ', using terminal flags to ensure that a command
	is only sent to terminal types that can handle it.

	* docs/gnuplot.doc term/cairo.trm term/canvas.trm term/cgm.trm
	term/emf.trm term/gd.trm term/pdf.trm term/post.trm term/svg.trm
	term/tgif.trm term/x11.trm docs/gnuplot.doc:
	Add flag to allow "set termopt linewidth "

2009-09-08  Philipp K. Janert  

	* src/specfun.c: Fixing the static function declarations for the
	Airy function.
	
2009-09-06  Ethan A Merritt  

	* src/win/wgraph.c (drawgraph): Make sure to update current position
	after drawing a polyline.
	Bug #2213362

	* src/graphics.c (boundary): If there is no colorbox, don't try to 
	assign tick positions for it.
	Bug #2822482

	* term/gd.trm: Re-order initialization of background color, correct
	compilation warnings if using libgd 2.0.36

2009-09-05  Philipp K. Janert  

        * src/specfun.c src/specfun.h src/eval.c docs/gnuplot.doc:  Adding
        support for the Airy function Ai(x) as gnuplot function airy(x).
	
2009-09-03  Alexander Tschner  

	* src/datafile.c (df_generate_pseudodata):  Fix off-by-one error in
	generating the number of points corresponding to samples.

2009-09-02  Benjamin Lindner   

	* docs/gnuplot.doc docs/plotstyles.gnu demo/histerror.dat:
	Add a figure to the pdf documentation showing histogram with errorbars.

2009-09-01  Ethan A Merritt  

	* src/set.c (set_tic_prop):  When xtics (e.g.) were unset, then a new
	command 'set xtics ...' could lose track of the tic properties being set.
	Bug #2848433

2009-08-31  Benjamin Lindner   

	* src/win/wpause.c src/wxterminal/gp_cairo.c:  Fix ambiguous syntax and
	bad format statement that generates compiler warnings.

2009-08-30  Tatsuro Matsuoka  

	* config/makeile.mgw:  The cairo terminals need gp_cairo_helpers also.

2009-08-28  Benjamin Lindner   

	* config/makefile.mgw:  Separate configuration flag CAIROTERMS for
	inclusion of pngcairo and pdfcairo terminals. 
	EAM - Share a CAIROLIBS flag for use by both WXT and CAIROTERMS.

2009-08-28  jpsa  

	* src/win/wgraph.c:   Use printer open method recommended by 
	Microsoft knowledge base article 240082.

2009-08-28  Alexander Tschner  

	* src/win/winmain.c:  Avoid buffer overflow in MyPrintF and MyFPrintF.

2009-08-27  Ethan A Merritt  

	* src/graphcs.c (boundary):  Fix bug #2845874
	(Rotated xtics caused misplacement of explicit bmargin).

2009-08-27  Ethan A Merritt  

	* src/breaders.c (png_filetype_function df_libgd_get_pixel)
	src/breaders.h src/datafile.c (df_open df_readbinary):
	If gnuplot has been linked with libgd (to support gif/png/jpeg) then
	we might as well use its ability to read in png images as binary data.
	New binary option for use with either rgbimage or rgbalpha
		plot 'foo.png' binary filetype=png

	* src/datafile.c (plot_option_binary):  Fix the logic that checks for a
	default binary filetype if none is specified in the plot command.

	* docs/gnuplot.doc docs/plotstyles.gnu docs/bldg.png:
	Add a sample plot the uses rescaled png images as plot elements.

2009-08-26  Ethan A Merritt  

	* configure.in term/canvas.trm: Remove EXPERIMENTAL flag from
	canvas and wxt terminals.

	* term/post.trm: Fix typos in version history

2009-08-21  Ethan A Merritt  

	* src/datafile.c (df_readbinary): The binary data syntax
	splot ... binary array=(x,y) 
	is very odd because it always fills in the z coordinate of each
	voxel with 0 rather than with the actual array value.  This makes a
	small amount of sense for IMAGE data, but makes the input mode useless
	for plotting a data surface from a binary array.  This patch changes
	the behaviour by loading the array value into z for non-image plots.

2009-08-19  Shigeharu Takeno  

	* term/tgif.trm:
	1) supports continuous colors (make_palette, set_color)
	2) supports fill patterns (filled_polygon)
	3) supports the density of solid fill (filled_polygon)
	4) adds TGIF_fillbox and TGIF_previous_palette (doing nothing)
	5) modifies two variable names (u* -> d*)
	6) swap point types 1 and 2 to match other terminals

2009-08-18  Ethan A Merritt  

	* src/plot2d.c src/plot3d.c docs/gnuplot.doc: More problems with
	iterate plus in-line definitions.  The scope of iteration within a plot
	command is documented as extending to the first comma or semicolon, but
	unfortunately the parser didn't allow omiting the comma after a 
	definition.  Now it does.  Add simple examples to the documentation.

2009-08-15  Shigeharu Takeno  

	* term/tgif.trm (TGIF_set_color): Support for RGB colors and TC_LT.

2009-08-13  anonymous 

	* term/tek.trm: Add support for xterm tektronix emulation

2009-08-07  Ethan A Merritt  

	* src/plot3d.c: The combination of iteration and in-line definition was
	fatal to splot.  Move the iteration check to encompass definitions also.
	Bug #2833808

2009-08-05  Ethan A Merritt  

	* src/graphics.c (boundary): The calculation of vertical space required
	to hold rotated x axis tick labels was only being done if the margins
	were in auto mode.  Rearrange the code so that the calculation is also
	made for plots with explicit 'set [tb]margin'.
	Bug #2830712

2009-08-04  Ethan A Merritt  

	* docs/gnuplot.doc:  Expand section on newhistogram command.

2009-08-04  Jrme Lodewyck  

	* configure.in: Remove unwanted spaces.

	* qtterminal/QtGnuplotScene.* qt_term.cpp: Changed round() to qRound().

	* qtterminal/QtGnuplotInstance.* qtterminal/embed_example.*: Forward
	gnuplot standard outputs to a custom frame.

2009-08-02  Ethan A Merritt  

	* src/axis.c src/axis.h src/color.c src/graphics.c src/graph3d.c:
	Add an additional parameter to all tick_callback() routines. In the case
	of auto-generated ticks, we use this to pass in a list of user-specified
	labels in case one is supposed to replace the auto-generated label.
	The actual label replacement is only implemented for 2D plots.

2009-08-01  Jrme Lodewyck  

	* qtterminal/QtGnuplotWindow.cpp qtterminal/QtGnuplotEvent.cpp qt_term.cpp:
	Close the current plot window when [ctrl+]q is pressed.

	* qtterminal/QtGnuplotInstance.cpp: changed the default path for the
	gnuplot executable in embedded widgets from the local directory to the main
	path.

2009-07-31  James R. Van Zandt  

	* docs/gnuplot.doc: Cross reference to "set xyplane" instead of
	deprecated "set ticslevel".

2009-07-30  Ethan A Merritt  

	* configure.in: Change default state of qt terminal to disabled.
	To build with qt support use    ./configure --enable-qt

	* src/qtterminal/Makefile.am: Add additional files to the list of
	things to be placed in the distribution package.

2009-07-30  Jrme Lodewyck  

	* configue.in: Fix a compile error when the Qt terminal is disabled.

2009-07-29  Jrme Lodewyck  
	* configue.in src/Makefile.am: better check for Qt tools
	moc uic and lrelease.

2009-07-28  Ethan A Merritt  

	* src/datafile.c (df_readascii): Handle xticlabels() in the case of
	histograms with errorbars.  Bugfix

2009-07-28  Jrme Lodewyck  

	* qtterminal/po/qtgnuplot_ja.ts: Japanese translation. patch 2828290

2009-07-28  Jrme Lodewyck  

	* qtterminal/qt_term.cpp: When consecutive motion events are received,
	only process the last one.
	* src/Makefile.am: Fix make rules for embed_example

2009-07-27  Jrme Lodewyck  

	* qtterminal/qt_term.cpp qtterminal/QtGnuplot.pro qtterminal/po/*:
	Add an internationalization framework and a french translation.

2009-07-26  Ethan A Merritt  

	* src/color.c (draw_color_smooth_box) src/gadgets.h src/gadgets.c
	src/graphics.c (boundary):  Add a field color_box.xoffset to allow the
	colorbox to be shifted left or right from the default placement.
	Use this internally to correct for the width taken by y2 tics and
	labels.
	Bugfix:  'set y2tics; plot foo using 1:2:3 axes x1y2 lc palette'

	* src/graphics.c (do_polygon):  Change the clipping rules for polygons
	to match those of rectangles.  A polygon is clipped only if all of its
	vertices are specified in plot coordinates (i.e. not screen or graph
	coordinates).

2009-07-24  Jrme Lodewyck  

	* qtterminal/qt_term.cpp: use locale config macros

	* qtterminal/QtGnuplotWindow.cpp: remove the "export to EPS" option.

	* qtterminal/QtGnuplotWidget.cpp: terminal size option is now working
	Changed the default background color from red to white.

	* qtterminal/QtGnuplotScene.cpp: clip the zoom rect on half integer
	coordinates.

	* qtterminal/QtGnuplotInstance.cpp qtterminal/embed_example.cpp: update the
	embed example to follow the new size policy.


2009-07-23  James R. Van Zandt  

	* src/mouse.c (event_buttonpress): Reimplement pan and zoom with
	mouse wheel to use axis_array[].min and .max directly, without
	using the mouse position.  Extend pan and zoom to 3D plots.  Add
	documentation and help printout.

2009-07-20  Benjamin Lindner  

	* src/win/winmain.c: enable load of the correct .ico symbol for the
	plotting window within win.trm; LoadIcon(graphwin.hInstance, "GRPICON")
	fails if graphwin.hInstance equals NULL.
	Patch #1627936

2009-07-20  Ethan A Merritt  

	* src/plot2d.c (store2d_point):  If the plot uses palette colors taken
	from the Z coordinate, then also use Z to auto-scale cbrange.
	Bug #2133407

2009-07-19  Jrme Lodewyck  

	Add a Qt terminal, which can either act as a standalone interactive
	terminal window or be embedded in an external Qt application.

	* configure.in docs/Makefile.in src/Makefile.am src/makefile.all
	src/makefile.awc src/term.c src/term.h ./term/qt.trm

	* qtterminal/*
	Makefile.am QtGnuplotApplication.cpp QtGnuplotApplication.h
	QtGnuplotEvent.cpp QtGnuplotEvent.h QtGnuplotInstance.cpp
	QtGnuplotInstance.h QtGnuplotItems.cpp QtGnuplotItems.h
	QtGnuplotResource.qrc QtGnuplotScene.cpp QtGnuplotScene.h
	QtGnuplotSettings.ui QtGnuplotWidget.cpp QtGnuplotWidget.h
	QtGnuplotWindow.cpp QtGnuplotWindow.h 
	qt_conversion.cpp qt_term.cpp qt_term.h
	embed_example.cpp embed_example.h README.Qt 

	* qtterminal/images/*
	application-pdf.png configure.png document-export.png document-print.png
	edit-paste.png grid.png icon32x32.xpm image-bmp.png image-x-eps.png
	view-refresh.png zoom-in.png zoom-original.png zoom-out.png

2009-07-18  Ethan A Merritt  

	* src/wxterminal/wxt_gui.cpp src/wxterminal/wxt_gui.h:
	Pass through mouse wheel events from the wxt terminal, so that the new
	pan and zoom works for wxt as well as x11.

2009-07-17  James R. Van Zandt  

	* src/mouse.c (event_buttonpress): Implement pan and zoom with
	mouse wheel: wheel to pan up or down, shift-wheel to pan left or
	right, control-wheel to zoom in or out, shift-control-wheel to
	zoom X axis only.

2009-07-16  Ethan A Merritt  

	* src/save.c: The "set view" command was incorrectly saved twice.
	Bug #2822433

	* term/win.trm: WIN_filled_polygon():  Attempt to handle pattern fill
	by piggybacking on the WIN_fillbox() code that creates a pattern brush.

	* src/graphics.c (plot_image_or_update_axes): In image failsafe mode,
	clip the individual rectangles (pixels) to the edge of the plot.
	Bug #2820529

2009-07-14  Ethan A Merritt  

	* term/win.trm: Set the fillstyle belonging to a filled polygon.
	Unfortunately, the filled_poly code in wgraph.c then ignores this,
	but at least we tried.

	* src/win/wgraph.c: Handle negative line types correctly, including
	support for LT_BACKGROUND.
	Bug #1952287

	* src/gplt_x11.c: The previous state was not being properly restored
	after drawing a filled rectangle.

2009-07-13  Ethan A Merritt  

	* term/win.trm (WIN_set_color) src/win/wgraph.c (drawgraph):
	Repair breakage of the set color mechanism.  term->set_color()
	should set the color simultaneously for pens, fill brushes, and
	text.  But no other line or fill properties should be affected.
	Fixes various reported bugs, including #2725599

2009-07-10  Ethan A Merritt  

	* term/post.trm (PS_fillbox):  FS_DEFAULT should be treated as 
	"fill with current color" rather than "fill with background color".
	Bug #2819615

2009-07-09  Ethan A Merritt  

	* src/gadgets.h: Repair incomplete initialization specs for default
	object properties.

2009-07-08  Petr Mikulik  

	* term/gd.trm (START_HELP(gif)): Document gif animation options.

2009-07-07  Shigeharu Takeno  

	* docs/gnuplot-ja.doc docs/term-ja.diff:
	Sync Japanese documentation to gnuplot.doc rev 1.573

2009-07-04  Ethan A Merritt  

	* src/term.c: The code was disabling all mousing and mouse events
	during multiplot.  This had the unfortunate side effect that window
	resizing and placement events were never acknowledged.  If the first
	plot drawn was inside the multiplot, very strange things happened.
	Also hotkeys would not work.  
	Bug #2812476

	* src/gadgets.h src/gadgets.h src/mouse.c (builtin_toggle_border)
	src/set.c:  The 'b' hotkey was a no-op in 2D plots, and lost the current
	user setting for both 2D and 3D plots. Change it to cycle the border
	setting between user / off / full / partial (3D only).

	* src/graphics.c (plot_boxes plot_c_bars do_rectangle do_key_sample):
	Remove the fill_corners() routine and instead call term->fillbox()
	directly rather than dummying up a call to term->filled_polygon().
	Bug #2804784

2009-07-04  Hans-Bernhard Broeker  

	* term/aquaterm.trm (AQUA_options): Fix typo.

2009-07-03  Harald Harders  

	* term/cairo.trm: Introduce the struct cairo_params_t that takes all
	pdfcairo and pngcairo terminal options, e.g., color, rounded, fontsize,
	etc., as it is already done in term/post.trm. This is useful when
	different terminals share the same portion of code.

2009-07-02  Mojca Miklavec  

	* term/aquaterm.c: The "size xx,yy" option should have a comma between
	xx and yy for consistency with other terminals.

2009-06-25  Ethan A Merritt  

	* src/graphics.c (plot_c_bars): Candlestick boxes that were entirely out
	of range on y were nevertheless appearing as a horizontal line along the
	plot border.  Skip them entirely.  Same problem for whiskerbars.
	Bugs #2807571 #2812572

2009-06-21  Thomas Sefzick  

	* term/gd.trm: The background color requested in "set term png..."
	was not being used in truecolor png output.
	Bugfix

2009-06-16  Ethan A Merritt  

	* src/term.c (test_term): Initialize bounding box.  Exercise a few
	more terminal properties if available:  transparency, enhanced text. 

	* configure.in: Remove the EXPERIMENTAL warning from the configuration
	options for command line macros and for the tikz/lua terminal.

2009-06-12  Ethan A Merritt  

	* src/wxterminal/wxt_gui.cpp src/wxterminal/wxt_term.h term/wxt.trm:
	set term wxt {dashed} {dashlength 
}

2009-06-11  Ethan A Merritt  

	* src/wxterminal/wxt_gui.cpp (wxt_set_color):  plot .. lc N should take
	only the color from linetype N, not any of the other properties.
	Bugfix  (e.g.  plot sin(x) with lines lt 0 lc 3)

2009-06-06  Ethan A Merritt  

	* src/misc.c src/save.c src/graphics.c src/term_api.h docs/gnuplot.doc
	docs/plotstyles.gnu:  Add new linestyle property 'pointinterval'.

	This is a modified version of patchset #2653943 contributed by
	Hans (oe6jwf@users.sourceforge.net).

	* src/term_api.h term/post.trm term/cairo.trm term/pdf.trm term/cgm.trm
	term/pbm.trm term/emf.trm term/win.trm:  Add a flag TERM_MONOCHROME
	that indicates a terminal wants black lines only, even if it is capable
	of RGB or palette color.

2009-06-05  Ethan A Merritt  

	* time.c (ggmtime): Counting back from 1.e38 by one year at a time takes
	forever. Limit the range of acceptable time values to +/- 10^12 seconds,
	which gives a range of 33688 years forward or back.
	* axis.c (gen_tics): Skip calculation of 0-length minor ticks

2008-06-04  Peter Hedwig  

	* term/lua/gnuplot-tikz.lua term/lua/gnuplot-tikz.help
	share/LaTeX/gnuplot-lua-tikz.sty: Update the lua terminal scripts to
	accept a font size in the second slot of a font descriptor string.

2009-06-04  Ethan A Merritt  

	* src/mouse.c:  The following test script triggered multiple problems.
	                "set multi; set x2data time; set x2tics; unset multi;"
	- initialize mouse_x, mouse_y to -1;  test before using
	- initialize mouse values with VERYLARGE (replace magic number 1e38)
	- xDateTimeFormat: do not attempt to convert VERYLARGE to a date
	Bugfix.

2009-06-04  Shigeharu Takeno  

	* term/gd.trm:  Remove redundant section in gif help text.

2009-06-03  Ethan A Merritt  

	* src/term.c (enhanced_recursion):  Enhanced text markup applied to a
	single multibyte character was producing garbage.  Fix this for UTF-8.
	Other multibyte encoding may still trigger this problem.
	Bugfix #2800539

2009-05-31  Ethan A Merritt  

	* src/axis.c (get_position_default):  Ugly hack to work around
	ambiguous syntax if "offset x,y" is the last thing in a plot clause.
	Bugfix #2726798

2009-05-31  Shigeharu Takeno  

	* docs/term-ja.diff docs/gnuplot-ja.doc:  Sync to rev.1.568

	* docs/gnuplot.doc term/gd.trm: typos in documentation

2009-05-31  Ethan A Merritt  

	Start branch for Release 4.4

	New stuff, i.e. code other than bugfixes or things identified as 
	being desireable for version 4.4, should be commited in the
	development branch only (this one).

	Bugfixes should be applied to both the development branch 4.3
	(this one) and the new one (branch-4-4-stable).  When we release
	4.4, we will bump the version number of the development branch to 4.5.

2009-05-31  Ethan A Merritt  

	* term/svg.trm:  Revert the global attribute xml:space="preserve"
	because Firefox 3 messes up badly when it is present.

	* demo/html/Makefile.svg demo/html/webify_svg.pl demo/html/index.svg:
	Add scripts to generate a demo set for the svg terminal.

	* ChangeLog, ChangeLog.1: Cycle the ChangeLog.
	Entries before the 4.2.0-rc1 release are now in ChangeLog.1,
	newer ones are in ChangeLog (this file).

	* README, README.1ST, TODO:  Quick pass at updating these.

	* src/Makefile.am term/Makefile.am.in: Handle the new term/js and
	gnuplot-lua-tikz.sty files correctly during 'make distcheck'.

2009-05-30  Ethan A Merritt  

	* share/LaTeX/Makefile.am:   Add ${prefix}/usr in front of the 
	install directory for latex files.  This probably still doesn't work
	correctly, because kpsexpand may not return a reasonable path.
	But at least if you have write permission to ${prefix} then
	'make install' will not fail.
	Bugfix #2798303

	* share/LaTeX/Makefile.am term/lua/TODO */gnuplot-lua-tikz.sty:
	Move gnuplot-lua-tikz.sty from term/lua/ to share/LaTeX/ so that it can
	be installed along with other latex support files.

	* configure.in:  Issue a warning that the BSD editline library does not
	handle multibyte character encodings.  That makes it pretty useless in a
	UTF-8 environment.  This is not something we can fix.
	Bug #2790153

2009-05-30  Thomas Sefzick  

	* src/graph3d.c (do_3dplot):  Adjust position of 3D plot with
	'set view equal xyz' so that the center of rotation is at the center
	of the screen.
	Bugfix #2797226

2009-05-30  Ethan A Merritt  

	* term/canvas.trm term/js/gnuplot_mouse.js:  Give each plot its own
	namespace, so that multiple mouseable plots in the same document do
	not overwrite each other's mouse readout.

	* demo/cities.dem demo/html/Makefile.canvas demo/html/webify_canvas.pl
	demo/html/index.canvas demo/html/mousebox.template
	demo/html/canvas_utf8.dem:
	Add scripts to generate a demo set for the canvas terminal.

	* term/js/README:  Provide some documentation on using the canvas
	terminal to create web pages, and on known browser quirks.

2009-05-28  Ethan A Merritt  

	* term/canvas.trm:  Javascript output using the "name" option now
	initializes the mouse and zoom tracking for each plot.  This will be
	needed in order to embed multiple mouseable plots in a single document.

	* term/canvas.trm term/js/gnuplot_common.js:
	Dots were not handled by the zoom code.  Create a new routine Dot(x,y)
	to wrap the call to strokeRect().  Bugfix.

	* term/x11.trm: Silence an escaped debug fprintf.  Bugfix.

2008-05-25  Peter Hedwig  

	* src/Makefile.am term/lua/ChangeLog term/lua/gnuplot.lua
	 term/lua/gnuplot-lua-tikz.sty term/lua/gnuplot-tikz.help
	 term/lua/gnuplot-tikz.lua term/lua/NEWS term/lua.trm:

	Rearrange internal documentation, improved error handling,
	remove the "script" keyword (script name is now mandatory).

	EAM: term/lua.trm: Create a dummy terminal table for 'tikz' so that
	'set term tikz' can act as a short form of 'set term lua tikz', the
	auto-generated documentation knows about tikz, and GPVAL_TERMINALS
	lists tikz as an available terminal type (requested by Octave).

2009-05-22  Ethan A Merritt  

	* term/gd.trm:  Test for libgd version 2.0.36 or newer.  These allow
	us to specify fonts either by filename or by using the syntax of the
	fontconfig utility.  E.g. "set term png font 'times:italic' 12"

2009-05-17  Ethan A Merritt  

	* term/gd.trm docs/gnuplot.doc: Restore the option of using one of
	libgd's built-in fonts, even if a scalable font is available.
	Begin a reorganization of the documentation dealing with fonts.
	There is now a top level entry "Fonts" in the manual, with subsections
	for font-handling in libgd, PostScript, and cairo (as yet unfinished).

	* term/js/gnuplot_mouse.js (saveclick zoom_in): Do not let the current
	mouse event fall through to also activate default desktop actions.

2009-05-12  Ethan A Merritt  

	* src/graphics.c (boundary): Initialize xtic_textwidth on entry.

2009-05-11  Ethan A Merritt  

	* term/pslatex.trm: Broken format specifier.
	Bug #2750114

2009-05-10  Ethan A Merritt  

	* term/cairo.trm:  Do not call term->text() in between multiplot
	sections; it causes a spurious page break in the pdf output.
	Bugfix

2009-05-09  Ethan A Merritt  

	* Makefile.am, src/Makefile.am:  Add a top level make target "gnuplot"
	that builds only the gnuplot executable.  I.e. no auxilliary programs
	for testing or demo generation, no documentation or tutorials, etc.
	This change was requested in order to simplify cross-compilation.

	* src/graphics.c (boundary):  Allow extra space in the right margin if
	user-defined xtic labels would otherwise protrude off the right edge of
	the plot.

2009-05-05  Peter Gasparovic  (buteo@users.sourceforge.net)

	* term/PostScript/cp1250.ps:  Fix code points for Lcaron, lcaron.
	Bug #2785002

2009-05-05  Thomas Sefzick (thse@users.sourceforge.net)

	* term/pslatex.trm: 'set epslatex ... blacktext' was producing white
	text for tics labels, axis labels, key labels, but black title text.
	Bug #2750114

2009-04-22  Carl Troein (troein@users.sourceforge.net)

	* src/axis.c (get_position_default):  Zero each position structure when
	allocated.  Bug #2778438.

2009-04-21  Ethan A Merritt  

	* src/mouse.c:  Clean up string handling and remove dead code.
	Use strcat() rather than overlapping sprintf(). This should do away
	with the need for the "ultrix" mouse patch in our contrib collection,
	and also fix Bug #2700365.

2009-04-19  Ethan A Merritt  

	* term/gd.trm:  Only show a list of colors in "show term" if the user
	actually set some new colors in the "set term" command.

2009-04-14  Ethan A Merritt  

	* term/js/gnuplot_mouse.js:  Initialize x2 and y2 axes in mousing code.

	* demo/html/Makefile demo/html/webify.pl demo/html/gnuplot_demo.css:
	Modify the layout of auto-generated web pages for the demo collection.

2009-04-13  Shigeharu Takeno  

	* docs/gnuplot.doc term/canvas.trm:  Fix typos in the documentation.

2009-04-12  Ethan A Merritt  

	* src/graph3d.c (find_maxl_keys3d):  Fix incorrect layout of key box in
	plots with labeled contours (e.g. contours.dem plot #21).

	* src/graph3d.c src/graph3d.h src/set.c src/unset.c docs/gnuplot.doc:
	Add a per-plot attribute "nosurface", allowing an individual plot to 
	opt out of the global 3D setting "set surface".

	* src/datafile.c (plot_option_binary): Do not reset df_matrix_file to
	FALSE just because there is a default setting for the binary format.
	Bugfix

2009-04-05  Ethan A Merritt  

	* term/canvas.trm term/js/gnuplot_mouse.c:
	Add plot canvas to the focus list so that hotkeys work in Firefox.

2009-04-04  Benjamin Lindner  

	* src/plot2d.c (eval_plots): Initialize newhistogram line type to
	current plot linetype. Otherwise "set style incr user" fails.
	Bug #2725577

2009-04-04  Ethan A Merritt  

	* term/post.trm:  Track current and previous linewidth, so that we 
	can issue an explicit "PL"  (stroke and set linewidth) if it has
	changed.
	Bug #2725599

2009-03-31  Ethan A Merritt  

	* term/canvas.trm term/js/gnuplot_mouse.css term/js/gnuplot_mouse.js
	term/js/gnuplot_common.js term/js/textzoom.png:

	Revise canvas terminal to provide additional client-side interactions.
	- Left mouse-click annotates the graph
	- Client side click-and-drag zooming of plots
	- Hotkey support (doesn't work in Firefox for some reason)
	- Coordinate space is oversampled to retain precision when zoomed
	The size of output *.js files is reduced by roughly 25% by using a set
	of shared routines kept in a separate file gnuplot_common.js

2009-03-31  James R. Van Zandt  

	* src/parse.c (empty_iteration): Iteration accepts negative
	increments.

2009-03-28  Ethan A Merritt  

	* src/graphics.c (boundary):  Reserve room for user tic labels even if
	the format for autoticks is "".

	* src/set.c (load_tics) src/save.c (save_tics):  Do not save or restore
	axis tic labels that were read from a data file.
	Bug #2711994

2009-03-26  Ethan A Merritt  

	* src/graphics.c (boundary): Fix bug that caused the left/right
	margin offsets to be applied twice, leading to too-wide margins.
	Bug #2714997

2009-03-26  Petr Mikulik  

	* src/history.c (write_history_list): Indexing istart from 1 otherwise
	"history" command (without arguments) does not work.

2009-03-25  Ethan A Merritt  

	* config/config.cyg config/config.dj2 config/config.mgw config/config.nt 
	config/config.os2 config/config.oww config/config.wc configure.in	
	src/datafile.c src/gplt_x11.c src/gplt_x11.h src/gp_types.h 
	src/graph3d.c src/graph3d.h src/graphics.c src/graphics.h src/misc.c 
	src/misc.h src/plot2d.c src/plot3d.c src/pm3d.c src/save.c src/show.c 
	src/tables.c src/term_api.h src/wxterminal/gp_cairo.c
	src/wxterminal/gp_cairo.h src/wxterminal/wxt_gui.cpp
	src/wxterminal/wxt_gui.h src/wxterminal/wxt_term.h term/aquaterm.trm
	term/cairo.trm term/canvas.trm term/dumb.trm term/emf.trm
	term/estimate.trm term/fig.trm term/gd.trm term/lua.trm term/pdf.trm
	term/pm.trm term/post.trm term/pslatex.trm term/README term/svg.trm
	term/win.trm term/wxt.trm term/x11.trm term/xlib.trm

	Remove the conditional compilation status of WITH_IMAGE.
	As Lucas Hart points out, for some while now it has not been possible to
	successfully build with ./configure  --disable-with-image 
	'show version long' will continue to report +IMAGE

2009-03-24  Ethan A Merritt  

	* term/js/canvasmath.js: Fill in most of the iso 8859-1 (Latin-1)
	character set and add a few more math symbols.

2009-03-24  Petr Mikulik  

	* src/pm3d.c (pm3d_plot): The quadrangles are only prepared but not
	drawn by this routine in pm3d depthorder mode, thus set_color() should
	not be called.

2009-03-20  Ethan A Merritt  

	* src/canvas.trm:  set term canvas title "foo" sets the title of the
	resulting HTML output document.

2009-03-18  Ethan A Merritt  

	* src/wxterminal/gp_cairo.c (gp_cairo_draw_text): Determine the vertical
	placement of text based on the average value found when the font was
	selected, rather than on the specific height of this text fragment.
	Otherwise successive fragments with different height produce an uneven
	baseline.  Bug #2661664

2009-03-14  Shigeharu Takeno  

	* docs/gnuplot-ja.doc docs/term-ja.diff docs/README.ja man/gnuplot-ja.1:
	Sync Japanese documentation to gnuplot.doc rev 1.562

2009-03-14  Ethan A Merritt  

	* configure.in: Explicitly include $LUA_CFLAGS as reported by pkgconfig.
	Bug #2637549

	* src/axis.c (make_tics): Trap case where there were insufficient data
	to determine axis range. E.g. "set view map; set pm3d; splot {0,1};".

2009-03-12  Ethan A Merritt  

	* src/fit.c (fit_command): Replace bogus initialization of dummy_token[]
	with explicit declaration.  Bug #2657599 

	* src/datafile.c (df_set_key_columnhead) src/datafile.h src/plot2d.c
	src/plot3d.c docs/gnuplot.doc demo/datastrings.dem demo/histograms.dem
	demo/histograms2.dem:

	Document the plot option "... title columnhead{(N)}"
	Move the point where this option is parsed from df_open() to 
	eval_{3d}plots() with the rest of the title options, using a callback
	to a new routine df_set_key_columnhead().  Deprecate the original form
	of the command, "using N title N", which was undocumented but used in
	several demos.  The deprecated syntax is still accepted if configured
	with --enable-backwards-compatibility.

2009-03-11  Ethan A Merritt  

	* src/graph3d.c: Bracket the code that draws 3D grid lines with calls to
	term->layer(TERM_LAYER_BEGIN_GRID) and term->layer(TERM_LAYER_END_GRID).

	* term/js/gnuplot_mouse.css term/js/prevzoom.png term/js/nexzoom.png
	term/js/help.png:  Additional icons for the canvas driver.

	* src/graph3d.c (do_3dplot): Define the clipping area in 3D plots to lie
	between the left-most and right-most graph box edges. This is a change!
	The intent is to allow the canvas terminal to use the plot's BoundingBox
	as a zoom region.  If it causes problems for other terminals, we will
	need to create and use a separate BoundingBox for this purpose.

2009-03-05  Ethan A Merritt  

	* src/graphics.c: Fix assignment of fill patterns to plot boxes and key
	for columnstacked histograms.  Bug #2664732

2009-03-04  Ethan A Merritt  

	* src/graphics.c (find_maxl_keys do_plot): The first entry in a list of
	labels is a placeholder for style information.  Do not reserve space for
	this entry in the key of a columnstacked histogram plot. Bug #2664723

2009-03-03  Ethan A Merritt  

	* configure.in:  Use AC_SEARCH_LIBS rather than AC_CHECK_LIB when
	checking for lua support. This allows for the library to be named
	something other than liblua.so.
	Bug #2637549

2009-03-02  Ethan A Merritt  

	* term/hpgl.trm term/tgif.trm term/gd.trm src/graphics.c:
	Fix dereference of uninitialized memory, overlapping memcpy, and
	other problems found by valgrind.

2009-03-02  Petr Mikulik  

	* term/post.trm (PS_encode_image print_five_operand_image): Fix
	related to the patch of post.trm from 2009-01-26: images drawn
	"with rgbimage" must always be drawn as rgb colour images.
	SF Patch #2613919: postscript outputs colour RGB as palette image

2009-02-28  Ethan A Merritt  

	* term/canvas.term:  "set term canvas {linwidth }"

2009-02-28  James R. Van Zandt  

	* src/fit.c (fit_command): Allow fitting functions with up to five
	independent variables.  If there is no data to fit, report how
	many data lines were rejected by each range spec.  In fit.log,
	report user-specified dummy variable names and all range
	restrictions (including Z).

	* demo/fit.dem: revise printed comments to show the fit commands.
	Demonstrate fitting a function with three independent variables.

2009-02-27  Ethan A Merritt  

	* term/canvas.trm:  Introduce a structure canvas_state to hold internal
	state variables.  This allows us to avoid redundant writes of the
	current color, linewidth, fill settings.  The size of image and filled
	curve plots is substantially reduced.

	* src/graphics.c (plot_image_or_update_axes):  
	The flag "rectangular_image" doesn't really indicate what it says.
	Fix that so we can use it to call term->fillbox() rather than
	term->filled_polygon() as appropriate in image plots.
	This makes a significant difference for the canvas terminal, because
	drawing a filled rectangle is a primitive operation, whereas filling
	a polygon is a relatively verbose sequence of instructions.

2009-02-25  Ethan A Merritt  

	* term/gd.trm (PNG_text_angle): Force angle to fall in the range
	[-pi/2 : pi/2].  Reported to avoid problems in some versions of libgd.

2009-02-23  Ethan A Merritt  

	* term/canvas.trm: Introduce helper routines bp() and cfp() into the
	javascript output file.  This reduces the file size of plots containing
	lots of filled polygons, e.g. images or 3D surfaces, by about 1/3.

2009-02-22  Ethan A Merritt  

	* term/canvas.trm: Add support for enhanced text mode.

	* term/js/canvasmath.js:
	Resize glyphs for - + /   so that they are all width 20 (same as 0-9).
	Resize glyph = to width 24 (same as < > ~).

2009-02-22  Benjamin Lindner  

	* src/mouse.c:  Fix broken FPRINTF debugging statements.

2009-02-21  Ethan A Merritt  

	* term/canvas.trm:  Specify UTF-8 encoding in HTML header.

	* term/js/canvasmath.js:  This is a plug-in replacement for Jim Studt's
	original canvastext.js, supplemented with additional character glyphs
	from the Hershey font set including Greek letters and various math
	symbols.  The additional glyphs are all indexed by their Unicode code
	points.  If embedded in a UTF-8 document, everything works as it should.

	* demo/approximate.dem demo/enhanced_utf8.dem:
	Add {} to help terminals having trouble with character placement of
	superscripts.

2009-02-20  Ethan A Merritt  

	* term/js/canvastext.js:  Correct some glyphs, modify slightly to allow
	non-ascii characters, and add a few examples of non-ascii glyphs.

2008-02-19  Peter Hedwig  

	* term/lua/gnuplot.lua:  More forgiving regexp to catch the
	version/date string.

2009-02-19  Manfred Schwarb  

	* src/gpexecute.c:  Remove a broken DEBUG section.

2009-02-18  Ethan A Merritt  

	* src/plot3d.c:  The iteration code was getting confused by 3D plots
	that contain multiple data sets.  Do not assume that the Nth file
	mentioned on the command line is the Nth data set.  Bugfix.

2009-02-18  Benjamin Lindner  

	* docs/gnuplot.doc:  Do not use an explicit extension in the names of
	figures to be processed by {pdf}latex.

	* term/post.trm:  Add missing intializer to various #define statements.

2009-02-16  Ethan A Merritt  

	* src/gplt_x11.c:  Make variable definition comply with C standard.

	* docs/gnuplot.doc docs/titlepag.tex term/cgm.trm term/canvas.trm:
	Reconcile duplicate index entries.  Add current version to title.

2009-02-15  Ethan A Merritt  

	* src/term_api.h src/term.c (set_term) set.c (set_terminal):
	Allow a string variable containing the requested terminal type.
	E.g.  screen = 'x11';  set term screen

2009-02-15  Petr Mikulik  

	SF Patch #2570385: GPVAL_TERM_WINDOWID
	This patch adds automatic variable GPVAL_NAME_WINDOWID, which
	contains ID of the current window running under X11 (e.g. x11 and wxt
	terminals).

	* src/eval.c (update_gpval_variables): Update GPVAL_TERM_WINDOWID.

	* src/gadgets.h src/gadgets.c: New global variable current_x11_windowid
	to be filled by terminals running on X11 (x11, wxt, qt, ...).

	* src/mouse.c (do_event): Set global current_x11_windowid from ge->winid
	and call update_gpval_variables() to update GPVAL_TERM_WINDOWID.

	* src/gplt_x11.c (gp_execute_GE_plotdone): New routine to replace direct
	call of gp_exec_event(GE_plotdone, ..., {0|X11 Window ID}) to notify
	gnuplot of changed X11 Window ID.

2009-02-14  Ethan A Merritt  

	* docs/gnuplot.doc docs/plotstyles.gnu:  Add a figure showing the use
	of image mode to create a heat map. Add a "heatmap" entry to the index.

2009-02-11  Petr Mikulik  

	* config/makefile.mgw: Use $(CC) instead of gcc to compile pgnuplot.

2009-02-07  Ethan A Merritt  

	* term/x11.trm (X11_options): Call term->init() rather than X11_init(),
	since the options routine is shared by x11 and xlib drivers.

2009-02-05  Ethan A Merritt  

	* src/util.c (type_udv) src/eval.c (add_udv_by_name) src/fit.c
	src/plot2d.c: Prevent strange behaviour due to uninitialized field
	udv_type in a udv entry that has been created but not yet defined.
	Bug #2556225

	* src/graph3d.c (draw_3d_graphbox): Allow Z axis label in 3D plots
	to be rotated.

2009-02-04  Petr Mikulik  

	* NEWS docs/gnuplot.doc src/pm3d.c (pm3d_plot) src/set.c (set_pm3d):
	Let "pm3d interpolate m,n" for negative m,n interpolates the surface
	for at least |m|, |n| points. The case m=n=0 means an optimal number
	of interpolation points.
	SF Patch #2558565: pm3d interpolate 0,0

2009-02-03  Petr Mikulik  

	* src/eval.c (update_gpval_variables) src/command.c (changedir_command)
	docs/gnuplot.doc: New automatic variable GPVAL_PWD for current working
	directory.

2009-02-02  Petr Mikulik  

	* src/mouse.c (lookup_key): Use exact match, otherwise F10, F11, or F12
	hotkeys bind to F1.

2009-02-02  Ethan A Merritt  

	* src/graphics.c (boundary do_plot): Move test for colorbox outside of
	boundary(), and only calculate placement of colorbox once.
	Bugfix.

	* term/canvas.trm: Taking the URL for associated javascripts from an
	environmental variable turns out to be less than useful if the scripts
	are tailored to the individual plots. Add a terminal option instead:
	    set term canvas mouse jsdir 'URL/for/javascripts/'

2009-02-01  Ethan A Merritt  

	* src/command.c (define): Fix under-allocation of space for user
	variables named GPFUN_*.

2009-01-31  James R. Van Zandt  

	* docs/gnuplot.doc: Update documentation: user functions can have
	up to 12 variables.

	* src/fit.c (fit_command): Allow second independent variable to be
	renamed in a fit command.

2009-01-30  James R. Van Zandt  

	* src/command.c (define): save a function definition in a
	user-accessible variable

2009-01-28  Hans-Bernhard Broeker  

	* term/emf.trm (GP_TA_NOUPDATECP, GP_TA_UPDATECP, GP_TA_LEFT)
	(GP_TA_RIGHT, GP_TA_CENTER, GP_TA_TOP, GP_TA_BOTTOM)
	(GP_TA_BASELINE): Added a GP_ prefix to avoid collision between
	these and the actual Windows API macros of the same names.

2009-01-28  Petr Mikulik  

	* src/breaders.c (edf_filetype_function): Fix for long headers.

2009-01-27  Petr Mikulik  

	* src/pm3d.c (pm3d_plot): Fix for "set pm3d depthorder" ignoring
	"set pm3d interpolate".

2009-01-26  Ethan Merritt  

	* src/wxterminal/gp_cairo.c (gp_cairo_draw_fillbox):
	Fix segfault due to freeing an uninitialized buffer pointer.

	* term/cairo.trm (cairotrm_filled_polygon):
	Plug memory leak: image buffers were never freed.

2009-01-26  Petr Mikulik  

	* term/post.trm (PS_make_header PS_image): Since the beginning of pm3d,
	the "/Color def" switched between gray and colour map. Choosing "false"
	for "Color", the gray map was always selected regardless the use of a
	custom palette. This led to ambiguities for custom colour palettes if
	they contain grays only. Thus let postscript choose always colour
	palette for interpolated colours ('set palette defined', 'set palette
	file') and colour/gray according to "Color" otherwise ('set palette
	gray', 'set palette rgb').
	SF Patch #2516634: custom colormap using postscript term

2009-01-25  Shigeharu Takeno  

	* docs/gnuplot-ja.doc docs/term-ja.diff:
	Sync Japanese documentation to gnuplot.doc rev 1.553

2009-01-25  Ethan Merritt  

	* term/canvas.trm: Clean up the bookkeeping for beginPath()/closePath().
	This is a work-around for early versions of the opera web brower, which
	seem to require a closePath() element even if the path has already been
	stroked or filled.

	* term/canvas.trm: CANVAS_fillbox() can use the primitive operation
	ctx.fillRect() rather than the generic, but more expensive, routine
	CANVAS_filled_polygon().  This is more likely to be handled correctly by
	older versions of opera.

2009-01-23  Ethan Merritt  

	* src/graphics.c src/term_api.h term/canvas.trm term/Makefile.am.in
	term/js/gnuplot_mouse.css term/js/gnuplot_mouse.js term/js/grid.png:
	Clean up mousing code for the canvas terminal.  Add a "mousebox"
	table to the html output in standalone mode, including an icon that
	toggles the grid lines. The table format is controlled by stylesheet
	gnuplot_mouse.css, which can be locally customized.

2009-01-22  Ethan Merritt  

	* term/svg.trm:  Add attribute   in the
	header.  Most browsers are ignoring this, so we still need to keep the
	work-around that repeats this attribute for individual text segments.

2009-01-21  Harald Harders  

	* term/post.trm:  Add a user-editable toggle ClipToBoundingBox.
	Default behaviour remains unchanged, but setting this toggle to "true"
	tells PostScript to clip everything that outside the canvas area.

2009-01-15  Timothee Lecomte  

	* config/makefile.mgw:
	Add gp_cairo_helpers.o in the list of object files to build for
	wxt.

2009-01-14  Ethan Merritt  

	* configure.in config/config.cyg config/config.dj2 config/config.mgw
	config/config.nt config/config.os2 config/config.oww
	src/gplt_x11.c src/gplt_x11.h src/show.c term/x11.trm:
	Do away with the conditional code flag BINARY_X11_POLYGON.
	No one has ever reported problems with it, so use it always.

2009-01-14  Timothee Lecomte  

	* src/wxterminal/gp_cairo.c (gp_cairo_draw_image):
	* src/wxterminal/gp_cairo.h:
	* src/wxterminal/wxt_gui.h:
	* src/wxterminal/wxt_gui.cpp (wxt_image):
	* term/cairo.trm (cairotrm_image):
	Change gp_cairo_draw_image prototype so that the conversion from
	gnuplot	internal image format to a unsigned int* is completely done
	outside	gp_cairo.c. Modify callers in cairo-based terminals
	accordingly. This is still preliminary work towards wxt-for-MacOSX.

2009-01-14  Petr Mikulik  

	* src/gplt_x11.c (process_event): Change the status bar of a non-active
	or persistent window only for almost2d plot.

	* src/gplt_x11.c (exec_cmd): Add field almost2d to plot_struct and set
	it according to sent ALMOST2D.

	* term/x11.trm (X11_text): Send information about ALMOST2D.

	* src/gadgets.h src/mouse.c: Move definition of macro ALMOST2D to
	gadgets.h.

2009-01-13  Ethan Merritt  

	* term/canvas.trm term/js/gnuplot_mouse.js:
	Mousing code for standalone plots created by the canvas driver.
	Embedded plots are mouseable also, but the user must provide the
	appropriate document to wrap the embedded plots and link them to
	the mousing code.

2009-01-13  Petr Mikulik  

	* config/makefile.mgw: Option to run gdlib-config to determine libraries
	for linking of gd. Fix link where to download hcw.

2009-01-13  Timothee Lecomte  

	* src/Makefile.am src/wxterminal/gp_cairo.c 
	(gp_cairo_draw_image) src/wxterminal/gp_cairo_helpers.c 
	src/wxterminal/gp_cairo_helpers.h src/wxterminal/Makefile.am:

	Introduce a new source file, named gp_cairo_helpers.c, to
	contain gp_cairo_* code that uses functions from gnuplot core.
	Currently this is a small portion of code to convert a
	coordval* to a char* buffer. This will be helpful for
	wxt-as-a-separate-process where I need to separate clearly the
	code used in the core, and the code used in the terminal process.

2009-01-09  Ethan Merritt  

	* src/fit.c (fit_command):  Issue a warning if no fittable parameters
	are found.
	Bug #1964774

2009-01-08  "Bruce Lueckenhoff" 

	* /configure.in /docs/Makefile.in /src/makefile.all /src/Makefile.am
	/src/makefile.awc /term/Makefile.am.in /src/term.h /term/canvas.trm
	/term/js/canvastext.js:

	New terminal driver "set term canvas" for the HTML 5 canvas element.
	The HTML canvas tag supports compact, cross-platform graphics that can
	easily be embedded in web pages and accessed by various browsers.

	This terminal uses a single vector font implemented in canvastext.js
	(released into the public domain by Jim Studt). The 'standalone' option
	creates an html output file containing javascript code to actually draw
	the plot.  The 'name ' option instead creates pure javascript
	output that contains a procedure foo() that draws the plot onto an
	externally-created canvas named "foo".  You can thus include more than
	one plot, each on a separate canvas, in a single html document.
	In both standalone or embedded mode, the canvastext.js script is
	referenced as an external resource.

2009-01-07  Ethan Merritt  

	* src/util3d.c (edge3d_intersect):  Fix long-standing bug in which
	the z coordinate was clipping against xmax rather than zmax.
	Bug #2472621

2009-01-05  Ethan Merritt  

	* src/graphics.c (plot_image_or_update_axes): The failsafe mode for
	'with rgbimage' was failing to take advantage of a terminal's
	alpha channel support.

	* configure.in: Give up pretending to support libgd versions prior
	to 2.0 (build fails because of missing truecolor and alpha channel).

2009-01-04  Ralf Juengling  

	* src/gp_types.h src/plot2d.c (get_data):  Fix column accounting for
	variable color attribute in the case that no explicit 'using' spec
	is given.

2009-01-03  Ethan Merritt  

	* configure.in, docs/gnuplot.doc:
	Remove the EXPERIMENTAL warning for plotstyle 'image', for 'set object',
	for x11 terminal features 'binary polygons' and 'external window',
	and for the cairo-based terminals pngcairo and pdfcairo.

2009-01-02  Ethan Merritt  

	* src/pm3d.c (set_plot_with_palette is_plot_with_colorbox):
	Fix an accounting error that caused unnecessary loading of a color
	palette into plots that do not need one.

2008-12-31  Ralf Juengling  

	* src/gp_types.h: Fix duplicate plot style indices for 
	RGBA_IMAGE and CIRCLES.

2008-12-31  Ethan Merritt  

	* src/misc.c (lp_parse): Allow further options to modify a line style.
	E.g.  plot ... with points ls 1 ps variable

2008-12-27  Allin Cottrell  

	* util.c (gprintf): Allow '#' format character.

2008-12-26  Shigeharu Takeno  

	* docs/gnuplot.doc docs/Makefile.in term/lua.trm: Various fixes.

2008-12-26  Ethan Merritt  

	* term/mac.trm: extra spaces are messing up the documentation..

	* src/graphics.c (boundary) color.c (draw_color_smooth_box):
	Clean up border placement code, fix colorbox bug.

2008-12-24  Mike Sutton  

	* term/x11.trm src/gplt_x11.c: Added size and position options for X11.

2008-12-23  Ethan Merritt  

	* demo/Makefile.am.in demo/all.dem src/Makefile.am:
	Clean up autoconf dependencies for lua terminal and for demos.

2008-12-21  Peter Hedwig  

	* configure.in src/Makefile.am src/term.h term/Makefile.am.in
	term/lua/ChangeLog term/lua/gnuplot.lua term/lua/gnuplot-lua-tikz.sty
	term/lua/INSTALL term/lua/NEWS term/lua/README term/lua/TODO:

	Generic Lua terminal with PGF/TikZ support.
	The current implementation supports output via TikZ/pdflatex:
		set term lua standalone
		set output 'plot.tex'
		plot foo
		unset output
		!pdflatex plot

2008-12-17  Ethan Merritt  

	* src/show.c (show_version) term/x11.trm (parse_driver):
	Do not overwrite the environmental variable GNUPLOT_DRIVER_DIR.

2008-12-14  Ethan Merritt  

	* src/graph3d.c src/graph3d.h:  More work on "set view equal {xy|xyz}'.
	It now works well for terminals with isotropic coordinate systems, but 
	unfortunately not for x11 or windows.

2008-12-13  Ethan Merritt  

	* term/emf.trm: Replace assert() statements with int_warn().
	Fix handling of enhanced text for which the rotation angle is non-zero.
	Bug #2424595

2008-12-11  Bastian Maerkisch  
	    Axel Thimm 

	* configure.in NEWS src/command.c src/gp_hist.h src/graphics.c
	src/history.c src/plot.c src/readline.c src/readline.h src/show.c
	src/term_api.h src/term.c (term_initialise):

	./configure --with-readline=bsd
	Allow gnuplot to use the NetBSD editline library as an alternative to
	gnu readline. This adaptation was originally coded by Bastian Maerkisch
	and subsequently improved by Axel Thimm and by Tormod Volden.
	The routine term_init() is renamed to term_initialise()
	to avoid conflict with an identically named routine in libedit.
	SF Patch #1504831

2008-12-10  Ethan Merritt  

	* src/datafile.c: Revise syntax of binary datafile record= and array=
	options. This allows the use of variables and expressions, adds several
	features that were documented but never implemented, and generally 
	cleans up the code.
	    old syntax:    set datafile binary array=128x128
	    new syntax:    set datafile binary array=(128,128)
	The old syntax is still accepted, but is now deprecated
	Bug #2378535

	* docs/gnuplot.doc demo/image.dem demo/rgbalpha.dem demo/image2.dem
	demo/circles.dem: Update docs and demos to use the new syntax.

	* src/gadgets.c src/gadgets.h src/graph3d.c src/save.c src/set.c
	src/show.c src/unset.c docs/gnuplot.doc:
	Modify command 'set view equal_axes' to accept suboptions xy and xyz.
	`set view equal xy` uses the same scale for the x and y axes (as before)
	`set view equal xyz` additionally uses that same scale for the z axis 

2008-12-09  Ethan Merritt  

	* src/color.h src/gadgets.c src/gadgets.h src/graphics.c src/misc.c
	src/misc.h src/plot2d.c src/save.c src/set.c src/show.c src/term_api.h
	src/unset.c docs/gnuplot.doc:

	Upgrade the fillstyle border field to take a color specifier rather than
	a simple line type.
	Bug #2345832

2008-12-07  Ethan Merritt  

	* src/graphics.c (do_key_sample do_rectangle): Fill style EMPTY
	should be no fill at all, rather than fill with background.
	Also, the first empty box in a boxplot was being drawn in the wrong
	color.
	Bug #2345832

2008-12-03  Ethan Merritt  

	* src/datafile.c (plot_option_binary_format): Code cleanup.

2008-12-02  Ethan Merritt  

	* src/datafile.c (plot_option_binary plot_option_array):
	Setting default suboptions for binary file input was documented, but
	never implemented.  Now it is.
	    set datafile binary record=5x5 format="%double"
	However, I believe that the syntax should be changed everywhere to 
	    set datafile binary record={something_parsable} format="%double"
	Bug #2378535

2008-11-28  Ethan Merritt  

	* src/tables.c (lookup_table_nth): Leading substring match is all very
	well, but return an exact match if one exists.  This fixes color lookup
	for e.g.  grey/grey10/grey100.

	* src/graphics.c (boundary) src/graph3d.c (boundary3d):
	`set {lrbt}margin at screen FRAC` should behave consistently for all
	four plot borders.  Ignore the current value of `set origin`.
	Bug #2345000

	* term/svg.trm: Force stroke to match fill color in pointtype 5.

2008-11-27  Ethan Merritt  

	* src/datafile.c (df_set_datafile_binary plot_option_binary_format
	plot_option_binary): Restore tracking of default binary filetype.
	Issue error rather than segfaulting on unsupported command
	"set datafile binary format=...".
	Bug #2345499

2008-11-23  Petr Mikulik  

	* config/README: Updated.

	* config/makefile.cyg config/makefile.mgw: Choose *.exe targets in
	makefile.cyg as in makefile.mgw.

2008-11-22  Ethan Merritt  

	* term/svg.trm: Work around two bugs in current svg implementations.
	The setting of xml:space="preserve" is not correctly inherited from the
	enviroment, so we must set it explicitly for each text fragment.
	Resetting dy="foo" after a sub- or superscript is best done inside the
	same text block.

2008-11-21  Petr Mikulik  

	* config/makefile.mgw: Targets are wgnuplot.exe, wgnuplot_pipes.exe,
	gnuplot.exe; pgnuplot.exe is kept as it was until now.

2008-11-19  Ethan Merritt  

	* term/gd.trm (PNG_options): If no information is available about what
	default scalable font might be available we currently give up and fall
	back to a built in non-scalable font.  Now we try font "arial" before
	falling back.  Who knows, it might even be available.

2008-11-15  Ethan Merritt  

	* src/bitmap.c src/bitmap.h src/tables.c src/tables.h src/show.c
	term/cgm.trm term/gd.trm term/pdf.trm:
	Consolidate the list of RGB color names and the list of RGB colors used
	for palette construction into a single table. Generalize the colorname
	dump routine so that it will be able to handle additional color lists.

2008-11-11  Philipp K Janert  
	
	* src/interpol.c (eval_kdensity): Fixing minor defect.

	* docs/gnuplot.doc docs/gnuplot.texi: Include smoothing 
	algos in New Features section.
	
2008-11-07  Petr Mikulik  

	* config/makefile.mgw: Support of WGP_CONSOLE. Choice for targets
	wgnuplot.exe, wgnuplot_pipes.exe, pgnuplot.exe, pgnuplot_small.exe. 

2008-11-07  Michael Goffioul  

	SF Patch #1627936: Gnuplot Win32 in console mode
	Implementation of console mode for Gnuplot under Win32, i.e. non-GUI
	for the command line. As a result, pgnuplot.exe is a full-featured
	gnuplot Windows executable with a proper piping capability (i.e. with
	a standard input) which improves its functionality with external
	programs like Octave. Up to now, pgnuplot.exe was sending messages to
	wgnuplot.exe.

	If gnuplot is compiled with defined WGP_CONSOLE, then the result is
	console mode application. Otherwise, it is the traditional GUI
	application.

	* NEWS: Updated.

	* config/config.nt config/makefile.nt: Updated to compile the console
	executable target.

	* src/command.c (pause_command read_line) src/mouse.c
	(event_buttonrelease) src/plot.c (gnu_main): Minor modifications for
	WGP_CONSOLE.

	* src/readline.c (win_getch): New routine.

	* src/term.c: Include io.h for _Windows and __MSC__.

	* src/win/wgnuplib.h: Do not declare TextXXXX() routine for WGP_CONSOLE.

	* src/win/wgraph.c: Do not call TextXXXX() if defined WGP_CONSOLE.

	* src/win/winmain.c: Various changes for WGP_CONSOLE. New routines
	stdin_pipe_reader() and ConsoleGetch().

	* src/win/wtext.h: If not WGP_CONSOLE, then do not declare "the older"
	routines, else declare ConsoleGetch().

	* src/win/wtext.c: Define TextXXXX() routine only if not WGP_CONSOLE.

	* src/wxterminal/wxt_gui.cpp (wxt_waitforinput): Take care of
	WGP_CONSOLE.

	* term/win.trm: New routine WIN_waitforinput().

2008-11-06  Ethan Merritt  

	* term/x11.trm (X11_set_font ENHX11_put_text): Initialize enhanced text
	processing to use most recently requested font rather than the default
	font.

2008-11-01  Ethan Merritt  

	* src/graph3d.c: More bugfixes affecting key placement.
	Bug #2163532

	* src/set.c (set_xyplane) docs/gnuplot.doc:  Add keyword
	'set xyplane relative ' but continue to accept the older
	form 'set ticslevel '.
	Bug #2101990

2008-10-31  Ethan Merritt  

	* src/graph3d.c (do_3dplot): Draw key entry line samples for pm3d
	surfaces with contours.  Fix vertical positioning of key text relative
	to the key box. Do not clip key text to plot boundaries, since the
	key may be outside the plot.
	Bug #2163532

	* src/save.c (save_set_all): Missing "at" keyword for user placement
	of key box.

	* src/set.c src/tables.c src/tables.h:  'set key notitle'

2008-10-30  Ethan Merritt  

	* src/axis.c (gen_tics) src/axis.h: Use a more complete test for
	round-off error when the increment between axis tics is close to the
	precision of the floating point representation.
	Bug #2209654

2008-10-29  Ethan Merritt  

	* docs/gnuplot.doc:
	Add documentation for variable linecolor and using pseudocolumns.
	Remove ancient comments about HP printers.

2008-10-28  Ethan Merritt  

	* src/gadgets.c (apply_pm3dcolor): Only take the color, not the
	dot-dash pattern.

	* src/graph3d.c (plot3d_lines plot3d_lines_pm3d): Apply "lc variable"
	to splot with lines.

2008-10-26  Ethan Merritt  

	* src/set.c (set_cntrparam): Allow iterative addition to the list of
	contour levels:     set for [i=1:N:inc] cntr level discrete i

	* src/graph3d.c (check_for_variable_color) src/misc.c (lp_parse) 
	src/graphics.c (check_for_variable_color) plot3d.c (get_3ddata):
	New colorspec:   'lc variable'
	Read linestyle index from data column, look up corresponding color.

2008-10-16  Shigeharu Takeno  

	* docs/gnuplot-ja.doc docs/term-ja.diff:
	Sync Japanese documentation to gnuplot.doc rev 1.539

2008-10-16  Ethan Merritt  

	* src/graphics.c (do_polygon): Do not clip polygon edges to the graph
	borders if the vertices are all given in screen coordinates.  Without
	this change, you cannot draw polygons outside of the graph.

2008-10-15  Ethan Merritt  

	* src/graphics.c (place_objects do_rectangle): Break out the rectangle
	drawing code into a separate routine.

2008-10-13  Ethan Merritt  

	* src/wxterminal/wxt_gui.cpp (wxtFrame::wxtFrame):
	Revert call to OnSize() that caused compile failure on linux.
	Bug #2159025

2008-10-12  Ethan Merritt  

	* src/plot2d.c (eval_plots): Explicitly set default color of first
	histogram to linestyle/linetype 0.
	Bug #2155287

2008-10-11  James R. Van Zandt  

	* docs/gnuplot.doc: Document restriction on option order: "title
	" must come immediately after "using".

2008-10-11  James R. Van Zandt  

	* docs/gnuplot.doc: "help datastrings": The "first item" would
	usually be called a "column heading". Add some
	cross-references. "help label": see also "labels". "help data":
	see also "labels". "help plot title": mention getting title from
	column heading, and link to "datastrings".

2008-10-11  Michael Goffioul  

	* src/wxterminal/gp_cairo.c (gp_cairo_draw_text): Define rint for MSVC.
	Make code C compliant.

	* src/wxterminal/wxt_gui.cpp (wxtFrame::wxtFrame): Do not force toolbar
	item size. Force resize event at the end of frame creation.
	(wxt_init): Declare wxSetInstance.

2008-10-11  Michael Goffioul  

	* src/win/winmain.h src/win/winmain.c (WinMain): Compute new variable
	szPackageDir from szModuleName, stripping possible "\bin\" at the end.

	* term/post.trm (PS_open_prologue_file): Use szPackageDir instead of
	szModuleName.

2008-10-10  Petr Mikulik  

	* src/win/pgnuplot.c: Document option "-e".

2008-10-10  Shigeharu Takeno  

	* src/win/wgraph.c (drawgraph):  Work around a Windows clipboard bug by
	using ExtCreatePen() only for linewidth != 1.  The clipboard loses the
	line color if created with ExtCreatePen(), but not CreatePenIndirect().
	Is the clipboard problem still present for thicker lines?

2008-10-07  Ethan Merritt  

	* src/plot.c (main) man/gnuplot.1 term/x11.trm (X11_args X11_options):
	Allow --persist and -p as synonyms for -persist on the command line.
	Have wxt and x11 use the same mechanism for parsing --persist, 
	rather than doing it in two separate places.

2008-10-07  Shigeharu Takeno  

	* src/plot.c (main) docs/gnuplot.doc:
	Add a command line option -e to execute specified commands:
	gnuplot   file1.in   -e "reset"   file2.in

2008-10-06  Juergen Wieferink  

	* src/set.c (set_palette_defined): Allow string variables and
	expressions in "set palette defined". SF #2149065

2008-10-02  Ethan Merritt  

	* src/mouse.c src/mouse.h src/set.c (set_mouse):
	Do not free() the permanent copy of default mouse format.
	Bug #2142011

2008-09-29  Ethan Merritt  

	* src/graphics.c (plot_image_or_update_axes) src/plot2d.c (get_data)
	term/pdf.trm (PDF_image) src/wxterminal/gp_cairo.c (gp_cairo_draw_image)
	src/plot3d.c (get_3ddata) term/gd.trm (PNG_image) demo/imageNaN.dem:

	When converting image data to image pixels, missing/NaN/Inf data points
	were being mapped to 0.  Since 0 can often be a legitimate cbrange
	value, this was unfortunate.  Modify the input code to retain the
	actual missing/NaN/Inf value, and teach the generic image code to skip
	NaN data points. +Inf, -Inf values are now correctly pinned to the
	extremes of the colorbar palette.  The terminal-specific image routines
	handled by libgd, PDFlib, and cairo are similarly modified.

2008-09-29  Petr Mikulik  

	* src/color.h: Add field c into structure gpdPoint.

	* src/pm3d.c (pm3d_plot): Support "pm3d interpolate" for surfaces
	given by both z and colour coordinates.
	SF Bug #2127845

2008-09-25  Ethan Merritt  

	* src/set.c (set_label load_tic_users prune_dataticks)
	src/internal.c (f_strftime):  Fix memory leaks found by valgrind.
	Memcheck now gives all.dem a clean bill of health.

2008-09-23  Ethan Merritt  

	* demo/html/Makefile demo/html/index.save:
	Add ellipse.dem to the set of auto-generated sample plots.

	* docs/gnuplot.doc src/gadgets.h src/graphics.c src/graphics.h
	src/hidden3d.c src/save.c src/set.c src/unset.c NEWS:
	New object type: polygon

2008-09-22  Ethan Merritt  

	* src/axis.c (gen_tics) src/graphics.c (label_width):  Add a sanity
	check for the number of auto-generated axis ticks.  Do not accept a
	request for more ticks than the resolution of the output device
	coordinate system (term->xmax). Skip label processing for empty labels.
	Bug #2117370

2008-09-20  Ethan Merritt  

	* src/gadgets.c (clip_line): Make sure that the clipped line segment
	returned by clip_line() has the same direction as the original segment.
	A simple draw command doesn't care, but if the segments are used to
	bound a filled polygon then a reversed segment causes fill artifacts.

2008-09-15  Ethan Merritt  

	* src/save.c: There is a parsing bug for the new "set view equal_axes"
	option, triggered by the save format.  Omit this option from "save"
	until the parsing bug is fixed.

	* src/term_api.h src/term.c (write_multiline):
	Remove discontinuity in text rotation at "rotate by 90".
	Text option "rotate" continues to work as it always has, but
	"rotate by 90" is no longer a synonym meriting a special case.

2008-09-13  Ethan Merritt  

	* term/emf.trm:  Add support for enhanced text mode.
	Clean up polygon code.

2008-09-10  Shigeharu Takeno  

	* docs/gnuplot.doc term/emf.trm:  Fix typos

2008-09-10  Ethan Merritt  

	* src/graph3d.c (place_labels3d):  Clip "splot with labels" against
	plot boundaries in "set view map" mode, for consistency with 2D plots.

	* configure.in term/cairo.trm src/syscfg.h:  glib.h provides a 
	guaranteed 32-bit data type, and cairo.trm already depends on GLib.
	Therefore we can use guint32 rather than defining our own type.

2008-09-09  Ethan Merritt  

	* configure.in src/syscfg.h:  Try to discover and define a safe 32-bit
	data type GP_UINT32_T.

	* term/cairo.trm:
	Fix cairopng_do_crop to use GP_UINT32_T, and bail out cleanly if it was
	not defined correctly.
	Terminal options were overwriting each other in the options string.
	Handle cropping of images with transparent background.

2008-09-08  Petr Mikulik  

	* src/graph3d.c (do_3dplot): Fixed MIN => GPMIN.

2008-09-08  Ethan Merritt  

	* term/win.trm (WIN_set_color) src/win/wgraph.c (drawgraph):
	The win terminal has been drawing spurious lines connecting distinct
	polylines in the input data file, but only in the case of variable
	rgb color or palette z.  I suspect the patch of 2008-06-24 but I am not
	certain.  Try a variant on that patch and also impose more consistent 
	bookkeeping of the current line type.

	* src/parse.h src/parse.c src/set.c (load_tic_user):
	Some set commands, e.g. set xtics, need to distinguish between the 
	first time through an iteration and subsequent times through it.
	Export a counter from parse.h that can be tested for this purpose.

2008-09-07  Ethan Merritt  

	* src/set.c (load_tic_functions): Revert the load_tic_functions change.
	There is a much better way to accomplish this.

	* src/set.c (set_command) src/unset.c (unset_command) docs/gnuplot.doc:
	Add iteration support to the 'set' and 'unset' commands. This turns out
	to be both simpler and more powerful than adding iteration as a special
	case for axis ticks. E.g.:   unset for [i=100:200] label i

2008-09-06  Juergen Wieferink  

	* src/term.c (enhanced_recursion):  Add curly braces {} to the list of
	characters that must be escaped in postscript enhanced mode.
	Bug #1968636

2008-09-06  Ethan Merritt  

	* src/set.c (load_tic_functions): Allow axis tick labels to be defined
	by iteration over expressions giving the label and position.
		set xtics for [i=1:N] ( label(i) position(i) {level} )
	Based on a patch by Shige Takeno.

2008-09-05  Ethan Merritt  

	* docs/gnuplot.doc src/gadgets.c src/gadgets.h src/graph3d.c src/save.c   
	src/set.c src/show.c src/unset.c NEWS:
	New option 'set view equal_axes' that forces x and y axes in a 3D plot
	to use the same scale.  This is similar to 'set size square' in 2D.
	Bug #2004205. Feature request #2006851.

2008-09-05  Peter Danenberg  

	* term/cairo.trm (cairopng_do_crop): Crop option for pngcairo.
	SF Patch #1873297 

2008-09-03  Ethan Merritt  

	* src/axis.c (add_tic_user): NULL labels are OK if requested via
	'set xtics (x1, x2, ...)' as opposed to read from a data file.

	* docs/gnuplot.doc:  Add minimal section on binary skip=foo:baz

2008-08-19  Ethan Merritt  

	* src/axis.h src/axis.c(gen_tics) src/set.c(set_tics) src/show.c
	src/graphics.c (plot_border): Add an axis tic attribute "rangelimited".
	If set, the border and tics for this axis will be drawn only for the
	range of the data, rather than the full range of the axis.

2008-08-15  Ethan Merritt  

	* term/dumb.trm: Accept terminal size in the form used by most other
	terminal drivers.   'set term dumb size 80,23"

	* src/set.c (set_tic_prop) src/graph3d.c (ztick_callback):
	Allow tic labels on z axis to have 'tc palette z'
	Feature request #1689545

2008-08-14  Ethan Merritt  

	* src/misc.c src/command.h src/command.c (do_string) src/mouse.c:
	Add a flag parameter to do_string() indicating whether the string is to
	be freed immediately after copying. This should fix memory leaks both in
	the new eval_command() and the existing call in pop_terminal().

2008-08-12  Juergen Wieferink  

	* src/misc.h src/misc.c: Make lf_push() and lf_pop() global.

	* src/command.c (do_string): Make use of lf_push() and lf_pop() to avoid
	memory leaks on int_error().

	* src/command.h src/command.c src/tables.c src/plot.c docs/gnuplot.doc:
	New command `evaluate` executes the commands given by a string argument.

2008-08-09  Ethan Merritt  

	* src/readline.c (ansi_getc): Teach built-in readline to map
	CSI-H to ^A and CSI-F to ^E, which offers some hope that the  and
	 keys will do something useful.
	Bug #1556607

2008-08-06  Benjamin Lindner 

	* term/post.trm: Fix parsing error for option "palfuncparam".
	Bug #2039912

	* term/emf.trm: Allow fractional linewidths; do not allow dash pattern
	length to go to zero.
	Bug #2040244

2008-08-06  Ethan Merritt  

	* term/emf.trm: Provide a separate "dashlength" option similar
	to the post, pdf, gd, and cairo terminals.

2008-08-05  Ethan Merritt  

	* src/axis.h src/eval.c: Track min/max range of data on each axis
	indepently of the current axis range itself.  Export to the
	corresponding variables GPVAL_DATA_{AXIS}_MIN and so on.
	This is useful all by itself, but also lays the groundwork for
	implementing "range-frame" borders as per request #2025481.

2008-08-02  James R. Van Zandt  

	* docs/gnuplot.doc: Fix syntax of "plot index": If only two
	numbers are supplied, it's the third number (the stride) that has
	been omitted.  Therefore, the third number should be in the
	innermost braces.

2008-08-01  Ethan Merritt  

	* src/axis.c (add_tic_user): Ignore NULL labels. This prevents possible
	segfault if tic labels are requested from a non-existent data column.

	* src/plot2d.c (eval_plots): Remove order dependency of newhist options.

2008-07-31  Ethan Merritt  

	* src/plot2d.c (eval_plots) src/graphics.c (do_plot):
	Histograms did not correctly honor 'set style user increment'.
	Bugfix.

2008-07-29  Ethan Merritt  

	* src/wxterminal/wxt_gui.cpp(wxt_set_color) 
	term/cairo.trm(cairotrm_set_color):
	Pay attention to the value of 'set palette maxcolors'.
	Bugfix.

2008-07-26  Ethan Merritt  

	* src/plot3d.c (grid_nongrid_data): Honor the axis range limits when
	drawing dgrid3d surfaces.
	Bug #1363641

2008-07-25  Ethan Merritt  

	* src/datafile.c (plot_ticlabel_using): If tic labels will be generated
	from an expression then force evaluation of all column contents.
	Otherwise references to column() return uninitialized garbage. Bugfix.

2008-07-24  Jozef Vesely  

	* src/datafile.c src/datafile.h:  Binary data types for 64-bit ints
	(long long).

2008-07-23  Shigeharu Takeno  

	* docs/gnuplot.doc: Fix various typos and cross-reference formats.

2008-07-23  Ethan Merritt  

	* src/mouse.c src/command.c (pause_command) src/command.h:
	New variant 'pause mouse close' will pause until the plot window is
	closed. Unlike existing variants, this does not disable mouse-clicks,
	hotkeys, or zooming.  Add wxt to the list of terminals that need a
	work-around to avoid losing an input character when the plot window
	is closed.

2008-07-22  Ethan Merritt  

	* src/graph3d.c (boundary3d): Add missing initialization of the clipping
	boundaries. Clip 3D plots to the canvas unless the terminal flags that
	it will do its own clipping.

	* docs/plotstyles.gnu docs/gnuplot.doc demo/hidden2.dem:
	Add an example image plot to the pdf docs, modify the interlocking tori
	idemo in hidden2d to show with/without depth sorting side-by-side.

	* src/mouse.c (event_buttonpress): Zooming uses mouse button 3.
	Do not disable it just because we are using buttons 1 or 2 for something
	else.

2008-07-21  Ethan Merritt  

	* src/eval.c src/eval.h (gp_word gp_words) C-callable versions of the
	built-in functions word() and words().

	* src/parse.c (check_for_iteration next_iteration) docs/gnuplot.doc:
	Sanity check the name of the variable used for iteration.  New syntax 
	allows iteration over the entries in a string:
	    plot for [foo in "a b c d"] ...

	* src/util.c (int_error): Allow somewhat longer error messages.

	* term/post.trm (PS_vector): Work around a bug in ghostscript/gv.
	If there is a long string of mixed relative/absolute lines without a
	stroke command, ghostscript renders it veeeery slowly.  We already 
	limit the number of relative moves in a row; this patch adds a "stroke".
	Bug #2021942

2008-07-19  Ethan Merritt  

	* src/graphics.c (plot_vectors) src/plot2d.c (get_data):
	Allow 2D vector plots to take color from an extra data column.
	Give an error when variable color is requested but too few data columns.

	* src/graph3d.c plot3d.c: Consolidate variable color checks into a
	single routine. Allow 3D vector plots with variable color.

2008-07-16  Ethan Merritt  

	* src/graphics.c (do_plot) src/graph3d.c (do_3dplot): Move palette
	initialization earlier in the sequence, so that no objects or axes are
	drawn before the palette is defined.
	Bug #2019453

2008-07-15  Ethan Merritt  

	* src/plot2d.c (histogram_range_fiddling):
	Fix logic for autoscaling y range of stacked histograms.

2008-07-14  Ethan Merritt  

	* src/plot2d.c (histogram_range_fiddling eval_plots):  Center stacked
	histograms at true x coordinate.  Allow user to set this via
	'newhistogram {at }'.  Adjust xmin value accordingly.

2008-07-14  Hilgers Christian  

	* src/graphics.c src/plot2d.c docs/gnuplot.doc:
	When constructing stacked histograms, track positive values separately
	from negative values. Place only positive values in the upward stack.
	Negative values are placed in a corresponding downward stack.

2008-07-12  Ethan Merritt  

	* src/set.c (prune_dataticks): Fix double-free error.

2008-07-09  Petr Mikulik  

	* src/eval.c src/mouse.c src/plot2d.c src/plot3d.c src/term.c: Added
	variables GPVAL_{S}PLOT, GPVAL_VIEW_{MAP|ROT_X|ROT_Z|SCALE|ZSCALE},
	GPVAL_MULTIPLOT, GPVAL_LAST_PLOT, GPVAL_TERMINALS.

	* src/term_api.h src/term.c: New function get_terminals_names().

2008-07-07  Ethan Merritt  

	* src/eval.c: Remove unused variable.

	* src/graph3d.c: Ignore 'set size ratio' in 3D plots unless the view
	mode is 'set view map'.  This brings the behavior in line with the docs.

	* src/util3d.c (map3d_xy) src/util3d.h src/graph3d.c:
	Change coordinates in map3d_xy() to (int) rather than (unsigned int).
	This makes it parallel to the 2D routine and also saves code.

2008-07-04  Petr Mikulik  

	* src/eval.h src/eval.c: New routines fill_gpval_integer,
	fill_gpval_float, fill_gpval_complex. To be used for more readable
	setting of GPVAL_ variables.

2008-06-27  Shigeharu Takeno  

	* docs/gnuplot-ja.doc docs/term-ja.diff docs/README.ja:
	Sync Japanese documentation to gnuplot.doc rev 1.517

2008-06-26  Philipp K Janert  

	* src/interpolc.c (eval_kdensity do_kdensity): Follow code conventions.
	
2008-06-26  Peter Rosin  

	* term/ggi.trm: uint32 -> unit32_t
	Allows to build with current libggi.

2008-06-26  Ethan Merritt  

	* src/graphics.c: Check for term->filled_polygon() before trying to
	call it.  (fixes segfault triggered by ggi terminal driver).

2008-06-26  Philipp K Janert  
	
	* src/gp_types.h src/interpol.c src/plot2d.c src/tables.c 
	docs/gnuplot.doc: Changes for new smoothing algorithm for 
	smooth histograms using Gaussian kernel density estimates.
	
2008-06-24  Ethan Merritt  

	* src/term.c (term_start_plot): The term/README file clearly states that
	terminal coordinates run from 0 to xmax-1 and 0 to ymax-1.  Therefore
	[xmax,ymax] is out of range, and we should revise the clipping limits
	accordingly.  NB: This may change the behavior of existing scripts that
	draw to the extreme edge of the canvas (e.g. border=0).
	Bugfix:  Prevents tripping the assert() statements in emf.trm

2008-06-24  Bastian Maerkisch  

	* src/win/wgraph.c (drawgraph): Don't forget to draw a polyline even
	if it has only a single segment.
	Bugfix

2008-06-23  Petr Mikulik  

	* src/color.c (draw_inside_color_smooth_box_postscript): Fix colour of
	the 2nd box in the colour box for negative palette in postscript
	output.
	SF Bug #2000751

2008-06-22  Ethan Merritt  

	* src/plot2d.c: Plot with vectors did not honor linestyles requested via
	'set style increment user'.

2008-06-20  Ethan Merritt  

	* src/set.c (delete_linestyle) src/unset.c src/setshow.h:
	Pass the head of the linestyle list as a parameter rather than
	hardcoding it to always be the list headed by first_linestyle.
	Remove unused routine assign_linestyle_tag().

	* src/misc.c src/misc.h src/term.c (lp_use_property):
	Move this routine from misc.c to term.c.  This cleans up a botched
	header dependency (the prototype was already in term_api.h rather than
	being in misc.h).

2008-06-19  Ethan Merritt  

	* term/aquaterm.trm (AQUA_init AQUA_boxfill AQUA_filled_polygon):
	Query aquaterm for alpha channel support; use it if present.
	Add fill styles to the filled polygon routine.

2008-06-18  Ethan Merritt  

	* src/fit.c: Dynamic allocation for fit script string.

2008-06-17  Ethan Merritt  

	* docs/gnuplot.doc docs/plotstyles.gnu demo/cities.dat:
	Revise the plot style examples to avoid pattern fill since pdfcairo is
	bad at it.  Use a more interesting demo to illustrate label plots.

2008-06-15  Ethan Merritt  

	* src/wxterminal/wxt_gui.cpp:
	Remove deprecated dc.BeginDrawing() dc.EndDrawing()

2008-06-14  Hans-Bernhard Broeker  

	* src/datafile.h (df_no_fpe_trap, evaluate_inside_using): Add
	missing 'extern' to declaration of new variables.

2008-06-13  Ethan Merritt  

	* docs/gnuplot.doc docs/titlepag.tex docs/gnuplot.texi:
	Replace "what's new in 4.0, 4.2" with "what's new in 4.3".
	Remove discussion of pre-version 4 features.
	Update or remove dead URLS.

2008-06-12  Ethan Merritt  

	* src/datafile.c src/datafile.h src/set.c src/save.c src/show.c
	eval.c (evaluate_at) docs/gnuplot.doc:
	New datafile property 'set datafile {no}fpe_trap'.

	Until now, evaluate_at() has wrapped every expression evaluation with
	set/reset of a floating point exception handler. This is very expensive
	and dramatically slows down data input from large files.  Now we provide
	a way to disable this via "set datafile {no}fpe_trap" or turn it back on
	again if necessary.  The exception handler remains in place for contexts
	other than data input.

2008-06-08  Ethan Merritt  

	* src/graphics.c src/misc.c src/save.c src/show.c src/unset.c:
	The flag LT_UNDEFINED was mis-used to indicate "same color as fill" for
	the border of filled areas.  This caused hard-to-reproduce bugs in the
	key samples for plots with filled areas.  Change the fillstyle code to
	use LT_DEFAULT instead for this purpose.

2008-06-07  Ethan Merritt  

	* src/set.c (set_margin) src/save.c (save_set_all) docs/gnuplot.doc
	demo/margins.dem demo/transparent_solids.dem demo/rgbalpha.dem:
	Add a new keyword "at" to absolute margin placement commands.
	'set rmargin screen .8' misleadingly seems to assign 80% of the page
	to the right margin.  Really we mean "set rmargin at screen 0.8",
	so say that.

2008-06-05  Ethan Merritt  

	* src/axis.c (gen_tics):  Interpret tic labels read from a data file as
	string constants rather than as formats.  Otherwise there are problems
	with labels containing the "%" character.

2008-06-05  Petr Mikulik  

	* src/mouse.c (builtin_toggle_log): Help line for the 'l' hotkey missed
	to mention both z and cb for splots.

2008-06-04  Ethan Merritt  

	* src/mouse.c (builtin_nearest_log):
	Further adjustment to 'L' hotkey behavior.  In "set view map" mode,
	toggle the cb axis if the cursor is in the color box, toggle the x1 axis
	if it is nearest, the y1 axis if it is nearest, and the z axis if none
	of the above conditions is true.

	* demo/heatmaps.dem:  Modify the last demo so that it can be used to
	explore the behavior of the 'l' and 'L' hotkeys. All 4 axes (x y z cb)
	can be individually toggled using the 'L' hotkey.  'l' toggles only y,
	which is what the documentation says, but maybe this should be changed.

	* src/graph3d.c: Allow to draw contours associated with a pm3d surface.

2008-06-02  Ethan Merritt  

	* src/hidden3d.c (store_polygon) src/mouse.c (event_motion):
	Replace a pair of assert() statements with a flag that prevents mouse
	interaction from further increasing the value of surface_zscale. This
	means you cannot trigger the error condition the asserts tried to guard 
	against just by moving the mouse.  You can still trigger it by setting
	the view parameters to something odd, but the patch of 2008-05-29 may
	handle that. 
	Bug #172806

	* src/term.c (estimate_strlen) term/estimate.trm:
	Allow for embedded newlines when estimating string length and height.

	* src/graphics.h src/graphics.c src/gadgets.h src/graph3d.c src/color.c
	src/mouse.c:  Move the bounding box information for the key and for the
	colorbox into their respective structures so that they can be shared by
	2D and 3D code.  Change the 'l' and 'L' hotkeys so that the color axis
	log scaling is toggled if and only if the mouse is in the colorbox.

2008-06-02  Shigeharu Takeno  

	* docs/term-ja.diff docs/gnuplot-ja.doc:
	Sync Japanese documentation to gnuplot.doc revision 1.506

2008-06-02  Tim Hoffmann  

	* src/win/wtext.c (WndParentProc): Account for scrollbars when shrinking
	the textwin to the maximally needed width. SF Patch #1971437.

2008-06-01  Timothee Lecomte  

	* src/wxterminal/gp_cairo.c (gp_cairo_draw_image):  Unpack RGBA data.
	Cairo uses a pre-multiplied alpha convention.

2008-06-01  Daniel Sebald  

	* term/gd.trm (PNG_image): Manually resize input image and
	alpha blend so that palette colors aren't consumed unnecessarily.

	* term/x11.trm (X11_image) src/gplt_x11.c (exec_cmd, X11_GR_IMAGE):
	Handle alpha channel by blending with existing image contents for
	AllPlanes, otherwise background is not included (i.e. value equals zero)
	making blending too dark.

2008-06-01  Ethan Merritt  

	* docs/gnuplot.doc:  New image plotting style 'with rgbalpha', requiring
	four values (r,g,b,alpha) per input pixel. Each component lies in the
	range [0:255].  Only a few terminals (cairo gd x11) support a true alpha
	channel with partial transparency, but we provide terminal-independent
	code that allows using the alpha channel as an all-or-nothing mask.

	* src/datafile.c (avs_filetype_function): Handle AVS file alpha channel.
	(df_bin_default_columns): Add RGBA_IMAGE with default 4 columns info.

	* src/gp_types.h: Add RGBA_IMAGE plot style, define alpha coord CRD_A.

	* src/plot2d.c (get_data) src/plot3d.c (get_3ddata refresh_3dbounds) 
	src/graphics.c (do_plot plot_image_or_update_axes)
	src/graph3d.c (do_3dplot): Handle additional channel IC_RGBA and CRD_A
	in several places, shuffle couple hunks of code, remove extra spaces.
	Autoscale color components of RGB images to [0:255] regardless of
	actual range present in the image.

	* src/tables.c (plotstyle_tbl): Add 'rgba$lpha'/RGBA_IMAGE.

	* src/term_api.h: Add IC_RGBA to t_imagecolor, new terminal flag
	TERM_ALPHA_CHANNEL.

	* src/wxterminal/wxt_gui.cpp (wxt_image): Data limit 4*M*N for IC_RGB.

	* term/x11.trm term/wxt.trm term/cairo.trm term/gd.trm term/svg.trm:
	Add flag TERM_ALPHA_CHANNEL.

	* term/win.trm (WIN_image): Placemarker for code handling alpha channel.

	* demo/rgbalpha.dem demo/all.dem: New demo

2008-06-01  Ethan A Merritt  

	* term/win.trm: Use a dynamically allocated string for the window title.
	Bug #1769857

2008-05-31  Ethan A Merritt  

	* term/tek.trm src/term.h:  Revise the list of default terminals.
	New addition to default build: dpu414
	Omit from default build: aed ai msdos/kermit selanar

	* src/standard.c:  Replace incorrectly defined macros FMIN, FMAX with
	GPMIN, GPMAX.
	Bug #1969415

	* src/set.c (set_mouse) src/show.c (show_mouse) src/mouse.c src/mouse.h:
	Rework mouse option parsing to use dynamically allocated strings and
	try_to_get_string().

	* src/tables.c src/tables.h src/show.c src/unset.c:  The 'bind' command
	doesn't follow usual gnuplot syntax conventions. Provide new synonyms
	"show bind" and "reset bind" that are less unexpected.

	* src/tables.c src/tables.h src/show.c:  The command "show colornames"
	was documented, but was not implemented.  Now it is.

2008-05-31  Thomas Sefzick  

	* term/epson.trm:  Add support for the Seiko DPU-414 thermal printer
	'set term dpu414'.

2008-05-31  Allin Cottrell  

	* term/metapost.trm (MP_filled_polygon):  Limit the number of vertices
	per line of output.

2008-05-30  Ethan A Merritt  

	* src/plot2d.c (eval_plots):  'with rgbimage' does not use a palette.

	* src/graphics.c (plot_c_bars do_key_sample) docs/gnuplot.doc
	demo/candlesticks.dem:  Candlesticks used to approximate a solid fill by
	drawing three vertical bars.  Now we use a true solid fill to indicate
	(open > close). This is the standard convention for financial data.

2008-05-29  Ethan A Merritt  

	* src/axis.c (make_tics):  Don't generate tics for an empty axis range.

	* term/pbm.trm (PBM_options):  Make the tic size independent of the
	font size.
	Bug #1969415

2008-05-29  Daniel Sebald  

	* src/hidden3d.c (sort_polys_by_z in_front coord_to_treecell):
	Add range-checks to the calculation of quadtree array indices.
	Bugs #1969415 #1728063

2008-05-27  Bastian Maerkisch  

	* src/win/wtext.c (TextInit), src/win/wgraph.c (GraphInit):
	Increase buffer sizes which contain the path to wgnuplot.ini.  Fixes
	crashes on systems with very long paths of the %APPDATA% directory.

2008-05-27  Ethan A Merritt  

	* src/misc.c (need_fill_border): LT_UNDEFINED really means
	"use default color"

	* src/graphics.c (do_key_sample): Do not draw errorbars on candlestick
	key sample

2008-05-25  Ethan A Merritt  

	* src/graphics.c (check_for_variable_color):  Consolidate all the checks
	for deriving color from a data column into a single subroutine.

	* src/plot2d.c (eval_plots) docs/gnuplot.doc:  Do not prevent the user
	from requesting palette colors for a 2D plot.  Reading a palette color
	value from an additional data column works fine for any plot style that
	isn't already using the full set of column assignments (candlesticks,
	boxxyerror).

2008-05-25  Hans-Bernhard Broeker  

	* term/emf.trm (EMF_options): Option 'size' broke out of parsing
	loop prematurely.

2008-05-23  Philipp K. Janert  

	* demo/all.dem demo/smooth.dem demo/dgrid3d.dem demo/random-points
	demo/gnu-valley: added demos for the new dgrid3d kernels and for 
	the "smooth cumulative"	smoothing algo.	

2008-05-22  Thomas Sefzick  

	* src/bitmap.c (b_vector): If either end of a vector would fall outside
	the canvas area, don't draw it.  This prevents segfaults and memory
	access problems if the terminal coordinates overflow or go negative.
	Bug #1969415

2008-05-21  Ethan A Merritt  

	* src/specfun.c (inverse_error_func):  The piecewise numerical 
	approximation failed to handle the case where x was exactly the join
	point for the pieces.  Include +/- 0.7 in the central piece.
	Also add one more cycle of Newton-Raphson.
	Bug #1962800

	* docs/doc2texi.el docs/gnuplot.texi:  Update

	* src/graphics.c (boundary): If it is impossible to reserve as much
	space as needed for the key, print a warning and leave the plot borders
	where they are. This prevents the plot border from being pushed entirely
	off the canvas.

2008-05-20  Shigeharu Takeno  

	* term/emf.trm (EMF_dashtype):  Don't ignore linetype LT_AXIS.

2008-05-20  Ethan A Merritt  
	
	* src/misc.c (parse_fillstyle):  Accept variables for fill density and
	border line type.

	* src/plot2d.c (eval_plots): Accept full keyword "fillstyle".

	* src/graphics.c (plot_boxes): Restore missing test for no fill border.

2008-05-19  Ethan A Merritt  

	* src/datafile.c (plot_option_binary df_show_binary df_show_datasizes)
	src/show.c (show_datafile) docs/gnuplot.doc:
	Clean up option handling for binary data files by using the standard
	option lookup routines. Add missing entry points to the documentation
	for binary data options. Simplify default output of "show datafile".
	"show datafile binary" will dump full list of options.

	* src/scanner.c (get_num):  Add back previous test for truncation
	of long to int on 64-bit machines.

2008-05-17  Philipp K Janert  
	
	* src/graph3d.h src/plot3d.c src/plot3d.h src/save.c src/set.c
	src/show.c src/unset.c docs/gnuplot.doc
	Adding new smoothing kernels to the dgrid3d logic.

	* src/gp_types.h src/interpol.c src/plot2d.c src/tables.c
	docs/gnuplot.doc
	New smoothing algorithm: 'smooth cumulative', which plots a
	cumulative distribution function of a random collection of points.

2008-05-17  Shigeharu Takeno  

	* src/win/wgnuplib.h src/win/wgraph.c src/win/winmain.c term/win.trm:
	Allow 'set term win ... title "foo"' to change the title displayed for
	the plot window.

2008-05-16  Ethan A Merritt  

	* src/scanner.c (get_num):  Parse integer constants on the command line
	using strtol() rather than atol().  This allows catching overflows and
	has the side benefit of handling hexadecimal and octal constants.
	Fixes bug from mouse+zoom with very large coordinate values.

2008-05-13  Ethan A Merritt  

	* term/svg.trm (SVG_layer):  Under some conditions a "front" grid or
	border could cause a spurious black-fill of the entire plot. Fix this
	by forcing a new group after the plot body, which will have fill:none.

2008-05-09  Ethan A Merritt  

	* src/datafile.c: Switch to dynamic allocation of strings read from a
	data file. This removes the limit of 64 characters per string.

2008-05-08  Ethan A Merritt  

	* term/pdf.trm (ENHPDF_FLUSH ENHPDF_put_text):  We correctly issue 
	save/restore requests to PDFlib, but we need to mirror these in the
	terminal code so that we track what font is currently selected.

2008-05-07  Ethan A Merritt  

	* src/wxterminal/gp_cairo.c (gp_cairo_set_font)
	src/wxterminal/gp_cairo.h:
	Look for "Bold" and "Italic" in requested font name, and translate
	this into a request for the corresponding variant of the base font.
	Accept standard Adobe font names by treating hyphens as spaces.
	Tracker item #1958227

2008-05-03  Ethan A Merritt  

	* src/tables.h src/tables.c (lookup_table_entry):  New utility routine
	for table lookup of a string, as opposed to a token index.

	* term/fig.trm:  Extend point types to match standard sequence for the
	the first 13 types.  Accept option syntax "set term fig ... size xx,yy".
	Add a table lookup for font names known to fig, so that the terminal
	accepts for example 'set term fig font "Palatino Italic, 11"'.

2008-05-01  Shigeharu Takeno  

	* docs/gnuplot-ja.doc docs/term-ja.diff:
	Sync Japanese documentation to gnuplot.doc revision 1.495

2008-05-01  Ethan A Merritt  

	* term/post.trm: Add a user-editable definition of Gamma at the head of
	PostScript output files.  This currently affects only grayscale images.
	Bug #1869824

2008-04-29  Ethan A Merritt  

	* src/gadgets.h src/graphics.c (adjust_offsets do_plot) src/graphics.h
	src/save.c (save_offsets) src/save.h src/set.c (set_offsets)
	src/show.c (show_offsets) src/unset.c (unset_offsets) docs/gnuplot.doc:
	Allow graph offsets to be given in graph coordinates.
	Feature Request #1849366

	* demo/electron.dem:  Do not pretend x2 is a separately scaled axis.
	Bug #1744139

2008-04-28  Bastian Maerkisch  

	* term/win.trm: Remove specific references to Windows 3.1

2008-04-27  Ethan A Merritt  

	* src/graphics.c (boundary): The windows and postscript terminals place
	the xlabel text with the character baseline on the bottom edge of the
	canvas.  This causes any descenders to be clipped.  This patch leaves an
	extra 1/5 line height of empty space at the bottom.  This fixes windows
	and postscript, but introduces a small waste of space on most other
	terminal types.
	Bug #1918293

2008-04-26  Bastian Maerkisch  

	* src/win/wgraph.c term/win.trm (WIN_set_color):  Preserve setting of
	dash type and linewidth when a new color is selected.
	Allow dash types with linewidth > 1.
	Bug #1863361

2008-04-25  Ethan A Merritt  

	* term/post.trm (PS_options):  "set term post ..." was losing options on
	the command line that appeared after "fontfile 'foo' ".
	Remove extraneous an c_token++.

	* src/graphics.c (plot_points) src/plot2d.c (get_data):  Allow the
	points in "with linespoints" to accept all the extra properties that
	"with points" already allows.  "pointsize variable" reads data from
	a 3rd column, "lc rgb variable" reads from a 3rd or 4th column.

	* docs/gnuplot.doc:  Wording changes suggested on newsgroup.

2008-04-24  Ethan A Merritt  

	* term/post.trm (PS_encode_image PS_image):  If the palette size is
	limited by "set palette maxcolors" then we need to rescale [0:maxcolors]
	to [0:bitwidth] for the packed representation of the image in PostScript
	Bug #1869824

2008-04-24  Bastian Maerkisch  

	* src/win/wgnuplib.h src/win/wgraph.c:  Separate the status line from
	the plot canvas. XOR drawing is replaced by full overwrites.
	Status line no longer contains garbled text.
	Bug #1520692

	* config/config.nt: Disable many thousand compiler warnings from 
	Microsoft Visual Express C++ 2005.

2008-04-23  Ethan A Merritt  

	* src/datafile.c (df_tokenise df_read_matrix): If missing or bad data is
	found in a matrix data file, print an int_warn() message, set the value
	to NaN if it isn't already, and return to the caller normally. 
	This allows one to leave holes in a matrix data file.

2008-04-23  Bastian Maerkisch  

	* src/win/wgnuplib.h src/win/wgraph.c term/win.trm:
	I have defined a new constant in wgnuplib.h WIN_PAL_COLORS.
	I don't know if the new value of 4096 is reasonable or not.
	Bug #1847768

2008-04-20  Ethan A Merritt  

	* src/datafile.c src/set.c src/show.c src/util.c (int_error):
	The worst-case fallback for int_error() uses a fixed length character
	array. This can be overrun by long error messages (it's a fallback
	for lack of snprintf).  Increase the size of the character array and
	also trim some very long error messages to a more reasonable size.

2008-04-18  Ethan A Merritt  

	* term/sun.trm:  Rename local static variable "canvas" to "SUN_canvas"
	to avoid conflict with global of the same name.

	* src/util.c (int_error):  We really want to use snprintf(), but if the
	platform doesn't provide it (SunOS 4.1) what can you do?

	To build on SunOS 4.1.4 I needed the above two changes,
	application of the sprintf patch (on the web site) originally developed
	for ultrix, and hand-editing of config.h to include #undef HAVE_VFPRINTF 

2008-04-18  Daniel Sebald  

	* src/datafile.c (df_skip_bytes): Skip bytes from a file using fseek;
	skip bytes from a pipe or stdin using repeated reading of single bytes.

2008-04-16  Ethan A Merritt  

	* term/x11.trm:  Use a more finely sampled palette to generate colors.
	It was using only 500 samples; change it to use the default (=5000) in
	approximate_palette().
	Bug #1906502

2008-04-15  Daniel Sebald  

	* src/datafile.c (plot_option_binary_format df_readbinary df_skip_bytes)
	src/datafile.h: Allow repeat field in binary format greater to be more
	than a single digit.

	* docs/gnuplot.doc: Document that the binary format string allows
	"discard" symbol and numerical repeat-field.

	Bug #1937089

2008-04-14  Ethan A Merritt  

	* src/misc.c (load_file lf_push lf_pop) src/misc.h docs/gnuplot.doc
	src/command.c (load_command call_command):
	Save and restore the input line and token parsing structures in
	lf_push() and lf_pop().  This allows both the 'call' and 'load'
	functions to be used recursively without destroying the previous
	input line and parsing context.  So 'load' no longer needs to be the
	last command on a line.

2008-04-13  Ethan A Merritt  

	* src/misc.c (load_file)  src/misc.h src/util.c (PRINT_FILE_AND_LINE)
	src/plot.c (main load_rcfile) src/command.c (call_command load_command):
	Keeping infile_name in a global causes a memory leak.  Move it to the
	dynamic structure list maintained by lf_push() and lf_pop().
	The callers in plot.c and command.c must pass a gp_alloc()ed string for
	the plot name, but need not worry about freeing it later. lf_push()
	and lf_pop() will handle this automatically, including error recovery.

2008-04-11  Ethan A Merritt  

	* src/misc.h src/misc.c(lf_push): Track recursion depth for load_file().

2008-04-10  Ethan A Merritt  

	* src/gplt_x11.c src/mouse.c src/os2/gclient.c src/win/wgraph.c
	src/wxterminal/wxt_gui.cpp configure.in docs/gnuplot.doc:
	New configure option  --disable-raise-console
	If, like me, you hate the program messing with your desktop state and
	also want to be able to type  while the cursor is over the plot
	window, then this option is for you.

2008-04-07  Ethan A Merritt  

	* src/datafile.c (df_open): Clear auto-generated key title from previous
	plot, if any.
	Bug #1929227

2008-04-06  Ethan A Merritt  

	* src/parse.c (parse_primary_expression) src/parse.h:
	Track highest data column referred to in an expression.

	* src/datafile.c (plot_option_using): Use info returned by perm_at()
	to update the highest data column used.  This allows us to catch at
	least the simple case of autotitle columnheader for 'using 1:($3)'.
	Delete previous ugly code to approximate this for binary files.
	Bug #1929227

	* term/post.trm (PS_set_font): Avoid segfault if the font name is longer
	than 32 characters.  The {ai grass next openstep} terminals suffer from
	the same problem, but since they are moribund just let it go.
	Bug #1935919

	* term/gd.trm: Track ttf font names using dynamically-allocated strings
	rather than fixed arrays.
	Bug #1935919

	* src/datafile.c (expect_string):  Dead code (test is invariably false)
	* docs/gnuplot.doc: Remove redundant links to shell/system section
	* term/emf.trm: Remove dead code
	* term/pbm.trm: Document that output image size is padded to nearest
	  multiple of 8 pixels on both x and y.

	* docs/gnuplot.texi:  Sync to current docs

2008-04-04  Ethan A Merritt  

	* src/graphics.c (boundary): Yet one more place ymax -> ymax-1.

2008-04-05  Daniel Sebald  

	* src/graphics.c (boundary): Missing cast to (int) for ytop.

2008-04-04  Ethan A Merritt  

	* src/graphics.c (boundary) src/color.c (draw_color_smooth_box):
	The coding guide for terminals in term/README clearly states:
	    xmax is the maximum number of points in the x direction.
	    The range of points used by gnuplot is 0 to xmax-1.
	The boundary calculations were instead scaling the right and top edges
	to term->xmax and term->ymax, so in the absence of margins these two
	border lines would lie off the edge of the plot.  This fix replaces
	term-xmax with term->xmax-1 in the boundary calculations, similarly for
	ymax. It does not work perfectly for terminals with down-sampling
	(wxt, cairo), but the previous code wasn't working either.
	Bug #1929002

2008-04-02  Ethan A Merritt  

	* src/eval.c docs/gnuplot.doc: Change name from GPVAL_PI to GPVAL_pi

2008-04-01  Thomas Sefzick  

	* src/tables.c src/command.c (undefine_command) src/command.h
	docs/gnuplot.doc:  Introduce a new command 'undefine foo baz [...]'
	that clears previously defined user variables "foo", "baz", ...

2008-04-01  Ethan A Merritt  

	* src/eval.c (update_gpval_variables) docs/gnuplot.doc:  Users can
	clobber the pre-defined variables pi and NaN.  Provide permanent,
	non-clobberable versions GPVAL_PI and GPVAL_NaN so that they can be
	restored if necessary.

	* src/internal.c (f_assign):  Don't let the user assign new values to
	internal variables GPVAL_* and MOUSE_*.

2008-03-31  Ethan A Merritt  

	* src/graphics.c (plot_c_bars) docs/gnuplot.doc:  The docs state that if
	(close > open) then the candlestick is drawn with 3 vertical bars.  This
	is backwards.  The convention is that (close > open) is good, and the
	box is empty; (close < open) is bad, and the box is filled. Correct the
	documentation to match actual practice.  And correct the code so that
	extra lines are drawn in the boder color for solid-fill candlesticks.

2008-03-30  Ethan A Merritt  

	* src/contour.c src/pm3d.c src/plot2d.c src/datafile.c src/parse.c:
	Yet more cleanup of dead code and outdated comments.

	* src/misc.c (need_fill_border) src/misc.h src/graphics.c:
	When "set style increment user" is in effect, apply it to the "border"
	linetype of a fillstyle.  New helper routine need_fill_border() to
	determine when this is needed and simplify the call sites.

2008-03-30  Allin Cottrell  

	* src/command.c (help_command): Fix incorrect nesting of #if clauses
	from removal of atari support.

	* src/set.c (set_logscale): The logscale base was being incorrectly 
	truncated to an integer.

2008-03-29  Ethan A Merritt  

	* NEWS config/README config/makefile.amg config/makefile.mto
	config/makefile.st config/makefile.unx config/term_pc.h configure.in
	docs/Makefile.in docs/doc2texi.el docs/gnuplot.doc docs/gpcard.tex
	src/command.c src/corplot.c src/fit.c src/gnuplot.prj src/gp_types.h
	src/help.c src/internal.c src/makefile.all src/makefile.awc src/plot.c
	src/plot.h src/readline.c src/readline.h src/show.c src/standard.c
	src/syscfg.h src/term.c src/term.h src/variable.c term/atariaes.trm
	term/atarivdi.trm term/multitos.trm:

	Remove code specific to atari platforms.  The most recent serious
	mention of gnuplot that I could find on an atari newsgroup was a 1997
	post by Theo Hopman that gnuplot 3.6beta could be compiled.
	The state of atari interest seems to be captured by this notice, all
	that is left of a once active group:
	    "Due to declining membership, The Ol' Hackers Atari Users Group
	     closed its doors after its final meeting in December 2000" 

2008-03-29  Andras Pal  

	* src/standard.c (f_ellip_first f_ellip_second f_ellip_third)
	src/standard.h src/eval.c:  New functions `EllipticK`, `EllipticE` and
	`EllipticPi` have been introduced for complete elliptic integrals of the
	first, second and third kind.

	* docs/gnuplot.doc: 
	Documentation accordingly updated.

2008-03-29  Daniel Sebald  

	* src/command.c (test_palette_subcommand):  Clean up the layout of the
	'test palette' output on the displayed page.

2008-03-29  Ethan A Merritt  

	* src/set.c (set_command) src/show.c (show_command)
	src/unset.c (unset_command):  Replace overly long error messages that
	list all available options with a suggestion to use 'help'.  The long
	error messages were not being printed anyhow due to length restrictions
	in int_error().

	* src/graphics.c (boundary):  Fix bug in calculating the column width
	of a horizontal key with a long title.

2008-03-24  Petr Mikulik  

	* config/config.cyg: pid_t is defined in types.h.

2008-03-23  Petr Mikulik  

	* src/axis.h: Fixed macros AXIS_INIT2D_REFRESH and
	AXIS_UPDATE2D_REFRESH.

	* src/command.c (refresh_request): Use these macros so that the refresh
	command for volatile data works correctly for log axes (SF 1916494).

2008-03-23  Ethan A Merritt  

	* src/tabulate.c (output_number):  Replace macro OUTPUT_NUMBER
	with a routine that can handle time format axes as well as the
	usual case.
	Bug #1880565

	* configure.in: Fix help message for --disable-fiterrvars
	Bug #1923468

2008-03-21  Ethan A Merritt  

	* src/set.c (set_format): Remove superfluous c_token++.
	Bug #1922288

	* docs/gnuplot.doc: Update section on "set format".

	* docs/gnuplot.texi: Sync to today's gnuplot.doc

2008-03-20  Ethan A Merritt  

	* src/graph3d.h src/plot3d.c docs/gnuplot.doc: Add a per-plot splot
	keyword "nocontours".  This overrides the global "set contour", so
	that you can contour a single surface from a plot with many.

	* docs/Makefile.in: Note an external dependency for "make html"

2008-03-17  Ethan A Merritt  

	* src/variable.c src/variable.c src/util.c src/util.h src/save.c:
	Make current_locale a global. Don't reset locale to "C" unnecessarily.
	Rename get_numeric_locale() to get_time_locale(), since that's what it
	really does.

	* src/wxterminal/wxt_gui.cpp (wxt_init): Restore the locale settings
	for both LC_TIME and LC_NUMERIC, but only after the GTK+ thread has
	finished mangling them.
	Bug #1916190

2008-03-16  Ethan A Merritt  

	"set locale" was taking the encoding (LC_CTYPE) from the environment,
	but not the time/date usage (LC_TIME). This is exactly backwards from
	what the documentation says. Change behavior to match the docs. However,
	if the current locale is UTF8 then also set the encoding to utf8.

	Move almost all of the code conditioned on HAVE_LOCALE_H into
	variable.h and variable.c.

2008-03-15  Thomas Sefzick  

	* src/axis.c (setup_tics):  If the user specified an explicit
	tic interval on a timefmt axis, do not change this by calling
	quantize_time_tics().
	Bug #1908019

2008-03-14  Shigeharu Takeno  

	* src/graphics.c (do_circles): Instead of drawing all the circle
	interiors, followed by all of the circle boundaries, draw both the
	interior and the boundary for each circle in succession.

2008-03-13  Ethan A Merritt  

	* config/config.cyg config/config.dj2 config/config.mgw config/config.nt
	config/config.os2 config/config.oww config/config.wc configure.in
	src/datafile.c src/datafile.h src/gadgets.c src/gadgets.h src/gp_types.h
	src/graph3d.c src/graph3d.h src/graphics.c src/graphics.h src/hidden3d.c
	src/plot2d.c src/plot2d.h src/plot3d.c src/pm3d.c src/save.c src/set.c
	src/show.c src/tables.c src/tables.h src/unset.c src/util3d.c
	src/util3d.h:  Code cleanup of options no longer marked EXPERIMENTAL.

	Remove conditional build flags EAM_HISTOGRAMS and EAM_DATASTRINGS.
	Due to bit rot, it was not possible to build current cvs without these
	anyhow.  When last measured, the change in code size due to joint
	omission of these options was 1.5%.

	* src/axis.c src/breaders.c src/datafile.c src/color.c src/command.c
	src/datafile.c src/gadgets.c src/graphics.c src/mouse.c src/plot3d.c
	src/pm3d.c src/pm3d.h src/save.c src/set.c src/show.c src/unset.c:
	Remove dead code, obsolete comments, leftover debug code.
	No more PM3D_HAVE_SOLID EQUAL_SYMBOL_NOT_REQUIRED OLDUNSETTICS

	* configure.in src/breaders.c src/breaders.h src/datafile.c
	src/datafile.h src/plot2d.c src/plot3d.c src/set.c src/show.c
	src/unset.c src/Makefile.am: No more BINARY_DATA_FILE conditionals.
	Due to bit rot, one could not build with this disabled, and other
	options depend on it.

	* demo/all.dem: Add circles.dem to the set of "all" demos.

2008-03-13  Carl Troein  

	* term/post.trm (PS_filled_polygon): Limit the number of consecutive
	relative moves in order to avoid accumulated round-off error.

2008-03-11  Ethan A Merritt  

	* src/plot2d.c (get_data store2d_point) src/graphics.c (plot_boxes):
	Alter processing of "with boxes" to handle specification of a column
	containing variable color information.  Modify "with circles" to use
	the same mechanism.
	Bug #1910587

	* src/set.c (parse_histogramstyle) src/tabulate.c (print_table):
	Default to non-zero linewidth for histogram errorbars.
	Handle histogram error bars in tabular output.

2008-03-10  Shigeharu Takeno  

	* docs/gnuplot.doc: Fix typos.

2008-03-08  Ethan A Merritt  

	* docs/gnuplot.doc: Update section on plot styles to include circles
	and to separate out the plot styles affected by "set style fill".

2008-03-08  Ethan A Merritt  

	* src/datafile.c (df_gets): Revert patch of 2008-02-22 because testing
	for "if (interactive)" is not a sufficient guarantee that it is safe to
	call readline();   Example:  "load foo" where "foo" contains a plot
	command with inline data (readline() tries to read from the terminal,
	not the file).  Thanks to Ralf Juengling for analysing the problem.

2008-03-07  Ethan A Merritt  

	* src/wxterminal/gp_cairo.c src/wxterminal/gp_cairo.h
	src/wxterminal/wxt_gui.cpp:  Treated dotted lines (LT_AXIS) differently
	from the general cycle of dash patterns.

	* term/cairo.trm: Scale dashlength down by a factor of 2 for pdfcairo.

2008-03-06  Ethan A Merritt  

	* src/graphics.c (boundary): Handle the case of a fixed aspect ratio and
	fixed plot margins. Fixed left margin takes precedence over right. Fixed
	bottom margin takes precedence over top. If no margins are fixed, center
	the plot.

2008-03-04  Ethan A Merritt  

	* term/fig.trm (FIG_layer): We don't know a true bounding box at the
	time a new plot is started, but fig2dev insists that some numbers be
	present; give it the bounding box of the full plot.
	Bug #1906855

	* src/graph3d.c (draw3d_graph_box):  Turn off clipping while drawing
	the border + ticks, since we don't want to clip "out" ticks.
	Bug #1906933

2008-03-03  Ethan A Merritt  

	* src/color.c (draw_color_smooth_box) src/unset.c (unset_axislabel):
	Allow user to set colorbar label rotatation if the bar is vertical.

	* term/cgm.trm:  Adjust palette size based on actual number of
	color slots remaining in the table.

2008-03-02  Ethan A Merritt  

	* term/cgm.trm:  Clean up terminal code.
	Use shared routines gp_alloc(), int_expression().
	Switch to using same set of colors as other terminals (web_color_rgbs).
	Handle RGB color request by returning closest match to a known color.
	Don't over-write user colors with each new palette.
	Decouple dash pattern from line color.

	* src/command.h:  refresh_request() depends on VOLATILE_REFRESH, not
	USE_MOUSE.

2008-03-01  Ethan A Merritt  

	* term/cgm.trm (CGM_fillbox CGM_filled_polygon):  Move the
	management of fill styles and pm3d fill from CGM_fillbox() to 
	CGM_filled_polygon().  This is necessary because while boxes and
	histograms call filled_polygon via term->fillbox(), the pm3d code
	calls term->filled_polygon directly.
	Bugfix.

2008-02-29  Ethan A Merritt  

	* src/set.c (set_format set_tics set_tic_prop) docs/gnuplot.doc:
	Allow string variables to specify the tic format. Also introduce
	a format keyword for "set tics" and "set {axis} tics".
	"set tics format 'foo'"  is equivalent to "set format 'foo'"
	"set ytics format 'baz'" is equivalent to "set format y 'baz'"

2008-02-26  Ethan A Merritt  

	* src/graphics.c (map_position place_objects) src/graphics.h src/mouse.c
	src/color.c:  Change map_position() to return (int) x,y rather than
	(unsigned int). Callers are modified accordingly.
	Bug #1903131

	Rationale: This avoids implicit casting that breaks clipping
	calculations on ia64 and PPC.  This patchset fixes clipping of labels
	and rectangles.  Similar clean-up should be done everywhere,
	It is a mistake to use unsigned coordinates before clipping.

2008-02-24  Ethan A Merritt  

	* src/term_api.h src/datafile.c src/gadgets.c src/term.c src/gplt_x11.c
	term/cairo.trm term/cgm.trm term/dumb.trm term/eepic.trm term/gd.trm
	term/pdf.trm term/post.trm term/x11.trm src/wxterminal/wxt_term.h
	src/wxterminal/wxt_gui.cpp:  A user has reported problems on ia64 that
	may arise from improper casting between signed and unsigned numbers.
	To facilitate debugging, change "unsigned" to explicit "unsigned int".

	* src/hidden3d.c (sort_edges_by_z sort_polys_by_z):
	Remove incorrect cast to (unsigned long).

	* src/axis.h src/graphics.c src/plot2d.c(store2d_point eval_plots):
	Remove a few more signed/unsigned incompatibilities. Declare variables
	as coord_type rather than int when appropriate.

	* src/datafile.c src/fit.c:  Use defined enum value NO_AXIS rather
	than the magic number -1 to mark an axis not in use.  Cleaner, and
	avoids signed/unsigned comparisons.

	* docs/href.c(parse) docs/doc2ipf.c(process_line): Null-terminate
	allocated string. Do not walk off the end of a null-terminated string.
	Bug #1900987

2008-02-23  Shigeharu Takeno  

	* docs/faq-ja.tex:  Translation of revision 1.37

2008-02-23  Ethan A Merritt  

	* src/datafile.c: #include "readline.h"

	* demo/circles.dem demo/html/Makefile demo/html/index.save:
	Include circles.dem in the set of web demos.

2008-02-23  Petr Mikulik  

	* src/os2/gclient.c: Use the font palette dialog instead of the standard
	font selection dialog. Still switcheable via #define STANDARD_FONT_DIALOG.
	SF #1773922 OS/2 PM-Termial broken font selection by Franz Bakan.

	* config/makefile.cyg: Added GNUPLOT_PS_DIR and WIN_IPC.

	* config/makefile.dj2 config/makefile.os2: Added GNUPLOT_PS_DIR.

	* config/makefile.mgw: Added WIN_IPC.

	* config/makefile.nt: Added GIF_ANIMATION.

	* config/configh_strip4compare.sh: New helper script to facilitate
	comparison of ./configure'd src/config.h and config/config.xxx.

	* config/config.cyg config/config.dj2 config/config.mgw config/config.nt
	config/config.os2: Updated according to config.h from ./configure and by
	means of config_strip.sh.

2008-02-22  Ethan A Merritt  

	* term/pslatex.trm:  Include entry point PS_path in the terminal tables
	for epslatex, pslatex, and pstex.  This fixes a bug due to the code in
	color.c:draw_inside_color_smooth_box_postscript() not being able to sync
	with the code in the terminal driver.

	* src/datafile.c (df_gets): Use readline() for reading inline data from
	pseudofile '-'.

2008-02-22  Ethan A Merritt  

	* src/datafile.c src/gp_types.h src/graph3d.c src/plot2d.c src/tables.c 
	src/graphics.c (plot_circles): New plot style 'plot ... with circles'.

	* docs/gnuplot.doc docs/plotstyles.gnu:
	Documentation for 'plot ... with circles'

2008-02-22  Ralf Juengling

	* demo/circles.dem demo/delaunay-edges.dat demo/empty-circles.dat
	demo/optimize.dat demo/lena.rgb demo/lena-keypoints.bin:
	Demo script and associated data files for 'plot ... with circles'.

2008-02-21  Ethan A Merritt  

	* src/term_api.h src/term.c (do_arc):  New terminal-independent routine
	to draw all or part of a circle, possibly filled.  Terminal-specific
	versions can be added later if desirable, with this one serving as a 
	default fallback for terminals with no private routine.

	* src/set.c (set_object) src/show.c src/save.h src/save.c src/gadgets.h:
	Generalize all the support routines for "set obj rectangle" to handle
	circles and ellipses also.

	* src/graphics.h src/graphics.c(place_objects do_ellipse) src/graph3d.c
	demo/ellipse.dem docs/gnuplot.doc:  Implement, document, and demonstrate
	"set obj {circle|ellipse}".

2008-02-20  Ethan A Merritt  

	* src/graph3d.c (place_arrows3d): Save/restore the clipping area so
	that splot doesn't trash the current clipping state.  Bugfix.

	* src/graphics.c (boundary): Reset the default clipping area to the
	plot boundary at the start of every 'plot' command.  This should not
	be necessary, but it provides protection against a hypothetical instance
	of int_error() in the middle of a save/draw/restore sequence.

2008-02-19  Ethan A Merritt  

	* src/set.c (set_timestamp): Do not spin on unrecognized option. Bugfix.

2008-02-18  Shigeharu Takeno  

	* docs/gnuplot-ja.doc docs/term-ja.diff docs/README.ja:
	Sync Japanese documentation to gnuplot.doc revision 1.473

2008-02-18  Lars Hecking  

	* src/datafile.c: Allow all types of files as data files except for
	directories.

2008-02-14  Ethan A Merritt  

	* src/util.c (gd_strdup) src/set.c (set_decimalsign): Fix segfault due
	to trying to free a string returned by getenv().  Bugfix.

	* term/svg.trm (SVG_layer): Force each plot to have its own bracketing
	group.  Bugfix.

2008-02-08  Ethan A Merritt  

	* src/datafile.c (adjust_binary_use_spec):  This whole routine is
	garbage. Patch it lightly so that at least it can handle more than one
	plot per graph.  But really it needs to be re-written from scratch.
	Bugfix.

2008-02-06  Ethan A Merritt  

	* src/graph3d.c src/hidden3d.c (reset_hidden3doptions):  Change default
	setting of "set hidden3d {front|back}" to "back" so that it matches the
	behavior of earlier versions.

2008-02-04  Ethan A Merritt  

	* src/term.c (change_term): Insure that 'set term foo' will always
	succeed if there is a terminal named "foo", even if there are also
	terminals named "foobaz" and "foodstuff".  Bugfix (svg/svga)

2008-02-04  Timothee Lecomte  

	* src/wxterminal/wxt_gui.cpp:
        * src/wxterminal/wxt_gui.h:
        * src/wxterminal/wxt_term.h:
        * src/wxterminal/gp_cairo.c:
        * src/wxterminal/gp_cairo.h:
        * src/wxterminal/gp_cairo_term.h:
	* term/cairo.trm:
	* term/wxt.trm:
	Rework the cairo code for 'enhanced text' to make it more independant
	from the parsing code. Now the parser loop is directly in the terminals
	code, instead of being in gp_cairo.*. This is a preliminary work for
	wxt-as-a-separate-process. It has the advantage of killing some global
	variables in cairo code, although this particular aspect of the work is
	not complete. gp_cairo_term.h is now useless and removed.

2008-02-03  Timothee Lecomte  

	* src/wxterminal/wxt_gui.h:
	* src/wxterminal/wxt_gui.cpp (LoadCursor):
	* src/wxterminal/bitmaps/xpm/cross.xpm:
	* src/wxterminal/bitmaps/xpm/icon16x16.xpm:
	* src/wxterminal/bitmaps/xpm/icon32x32.xpm:
	* src/wxterminal/bitmaps/xpm/icon64x64.xpm:
	* src/wxterminal/bitmaps/xpm/notfound.xpm:
	* src/wxterminal/bitmaps/xpm/right.xpm:
	* src/wxterminal/bitmaps/xpm/rotate.xpm:
	* src/wxterminal/bitmaps/xpm/size.xpm:
	Recent gcc versions are stricter with strings. Define xpm char arrays
	as const.

2008-02-02  Ethan A Merritt  

	* src/graph3d.c src/hidden3d.c (draw_vertex):
	Remove cntr3d_dots() as a special case routine. Use cntr3d_points() to
	treat dots as pointtype 0. This allows hidden3d to handle dot surfaces.

2008-02-01  Ethan A Merritt  

	* src/tabulate.c: More informative error message if the current plot
	style is not fully output to a table.

2008-02-01  Daniel Sebald  

	* src/datafile.c (df_readbinary): Fix off-by-one error in the implicit
	"column 0" of non-matrix binary data files.

2008-01-30  Ethan A Merritt  

	* src/graph3d.c (do_3dplot): Revamp main loop over 3D plots.
	Previously "unset surface" would bypass all plot types except contours.
	Now we have many 3D plot types other than surfaces that should not be
	bypassed simply because the surfaces are turned off.
	The old logic was bogus anyhow, since there were many tests for
	"if (!draw_surface)" inside the main "if (draw_surface)" block.
	The result: now I can plot labels and vectors on top of my contours.
	In general, 'splot ... with {labels|vectors|image|rgbimage}'
	now ignores both "{un}set contour" and "{un}set surface"

	* src/plot3d.c (eval_3dplots): Don't bother to check for non-grid data
	in plot types 'with {labels|vectors|image|rgbimage}'.

2008-01-28  Petr Mikulik  

	* graph3d.c (map3d_getposition, map3d_position_r): Fix case of y graph
	coordinate and splot_map.

2008-01-27  Ethan A Merritt  

	* graph3d.c (cntr3d_lines) util3d.c (polyline3d_next) gadgets.c:
	Clip contour lines to the plot boundary in "set view map" mode.
	Remove dead code related to these routines.
	Bug #1745598

2008-01-26  Ethan A Merritt  

	* src/graphics.c (boundary): Be more precise in estimating the vertical
	space required to accommodate rotated tick labels on x and x2 axes.
	Bug #1879907

2008-01-25  Ethan A Merritt  

	* src/term_api.h src/graphics.c (do_plot) src/graph3d.c (do_3dplot):
	Bracket each individual plot within a figure by a pair of calls to
	term->layer(TERM_LAYER_BEFORE_PLOT) term->layer(TERM_LAYER_AFTER_PLOT).

	* term/svg.trm (SVG_layer): Use the notification to encapsulate each
	plot into an  ...   context.
	SourceForge tracker ref #1359667

	* term/post.trm (PS_layer): Use the notification to insert comments
	before and after the code for each plot.

	* term/fig.trm (FIG_layer): Use the notification to wrap each plot
	as a separate compound object for later editing.
	SourceForge tracker ref #1683173

2008-01-25  Ethan A Merritt  

	* src/help.c src/command.c:  The old compile option NO_GIH allowed
	bypassing gnuplot's internal help code on systems that have other help
	mechanisms (Windows, VMS). Clean this up so that it compiles correctly
	on all platforms, and make the unneeded internal help code conditional.

	* src/tabulate.c:  Handle plot style "with filledcurves".

	* src/datafile.c (df_open df_generate_pseudodata) docs/gnuplot.doc
	demo/heatmaps.dem:  Instead of trying to guess based on the plot type
	whether the user wants a one-dimensional set of samples or a 2D grid,
	split the pseudo- file name into two variants.
	'+' generates 1D (samples), '++' generates 2D (samples, isosamples).
	See #1872528  Peter Danenberg  

2008-01-23  Morten MacFly  

	* term/post.trm (PS_open_prologue_file PS_dump_prologue_file
	PS_load_glyphlist) term/PostScript/prologues.h: Update built-in
	prologues to match the external ones. Prevent a segfault if the
	appropriate prologue file is not found at run time.  Add utf-8
	to the internal list of available prologues.
	Bug #1878095.

2008-01-21  Ethan A Merritt  

	* term/svg.trm (SVG_filled_polygon): Fix bug that causes
	FS_TRANSPARENT_PATTERN to create a blank fill area.

2008-01-21  Mojca Miklavec  

	* term/aquaterm.trm: Apple calls iso8859-9 NSWindowsCP1254StringEncoding
	rather than NSISOLatin5StringEncoding.

2008-01-21  Allin Cottrell  

	* src/command.c (pause_command): Provide a default "paused" message so
	that Windows does not segfault if no message is provided for pause -1.

2008-01-16  Ethan A Merritt  

	* src/tabulate.c (print_3dtable):  Prevent possible segfault from
	attempt to initialize vector tail pointer in a plot that contains
	no vectors.

	* src/graphics.c (plot_image_or_update_axes):  Do not clip 3D image data
	against Z range if the plot mode is "set view map".

	* demo/heatmaps.dem demo/4D_data.dem demo/all.dem demo/html/index.save
	demo/html/Makefile: Replace the 4D_data demo script with a more general
	demonstration of 2D and 3D heat maps.

2008-01-16  Hans-Bernhard Broeker  

	* share/Makefile.am (Gnuplot): Fix rule to allow builds outside
	the source tree.

2008-01-15  Ethan A Merritt  

	* term/svg.trm:  Rework the inheritance of color and stroke properties
	applied to points. This allows the Firefox svg engine to handle our
	point styles.

2008-01-13  Allin Cottrell  

	* src/term_api.h src/term.c term/emf.trm term/PostScript/8859-9.ps
	term/post.trm docs/gnuplot.doc:   Add encoding option for Microsoft
	Codepage 1254 (Turkish).  This is the same as latin5 (iso8859-9) except
	that it also assigns characters to code points x80 - x9F.

2008-01-10  Ethan A Merritt  

	* src/set.c (prune_dataticks) src/setshow.h: New routine to purge any
	axis tick labels left over from 'using xtics(n)' option during previous
	plot command.  Manually entered tick labels are kept.
	Bug #1850588

	* plot2d.c (plotrequest): Call prune_dataticks() before each new plot.

	* src/pm3d.c (pm3d_plot): When color information is given in a separate
	column, we must not use the interpolated z coordinate for color.
	Bug #1783405

2008-01-10  Petr Mikulik  

	* src/command.c (replot_command): Fix for replot with unknown terminal.

2008-01-10  Petr Mikulik  

	* term/post.trm (PS_encode_image): Fix for maxcolors in "plot with
	image".

2008-01-10  Daniel Sebald  

	* src/hidden3d.c (store_polygon): Discard degenerate polygons.
	Bug #1727198

2008-01-09  Ethan A Merritt  

	* src/eval.c (update_plot_bounds): Rename exported variables TERM_* to
	GPVAL_TERM_* so that they match other internally maintained variables.

2008-01-07  Allin Cottrell  

	* term/pdf.trm (EMF_setfont):  Add support for encodings
	iso_8859_1 iso_8859_2 iso_8859_9 iso_8859_15 cp1250

2008-01-06  Allin Cottrell  

	* term/emf.trm (EMF_setfont):  Add support for encodings
	iso_8859_2 iso_8859_9 cp1250 koi8r koi8u

2008-01-06  Ethan A Merritt  

	* term/post.trm:  Default to abobeglyphnames TRUE.

2008-01-05  Ethan A Merritt  

	* src/plot2d.c (plotrequest):  Revert inadvertent change to handling of
	'set log cb' introduced 2007-08-31.

2008-01-04  Ethan A Merritt  

	* term/svg.trm: Missing semicolon in definition of gpPt4.

2007-12-31  Allin Cottrell  

	* src/term_api.h src/term.c (change_term):  Add a field to TERM_TABLE.
	term->tscale is a scaling factor between internal terminal coordinates
	and the output pixel coordinates. Intended to support external mousing.

	* term/cairo.trm term/post.trm term/svg.trm: Initialize term->tscale.

	* src/eval.c (update_gpval_variables update_plot_bounds):
	Export pixel coordinates of plot boundary as seen in output image.
	TERM_XMIN TERM_XMAX TERM_YMIN TERM_YMAX

2007-12-31  Ethan A Merritt  

	* src/show.c (show_variables) docs/gnuplot.doc:  Provide a mechanism
	for listed only select variables.  E.g. `show variables MOUSE` will
	list only variables whose name begins with the string "MOUSE".

2007-12-25  Ethan A Merritt  

	* docs/gnuplot.doc demo/hidden2.dem:
	Documentation and comments for 'set hidden3d {back|front}'.

2007-12-24  Ethan A Merritt  

	* src/graph3d.c (do_3dplot) src/graph3d.h 
	src/tables.c src/tables.h demo/hidden2.dem demo/html/Makefile
	src/hidden3d.c (set_hidden3doptions show_hidden3doptions
	                save_hidden3doptions reset_hidden3doptions):
	New option 'set hidden3d {front|back}'
	controls whether the hidden3d plot elements are drawn before or after
	other plot elements such as pm3d surface or image.

2007-12-20  Ethan A Merritt  

	* term/gd.trm:  #define PASTEL_PALETTE and associated comments to
	allow palette-based plots to use a partially saturated fill style.

2007-12-19  Ethan A Merritt  

	* term/svg.trm:  Implement dashed lines. Extend color support to
	include TC_LT. Assign color and dash attributes to individual paths,
	rather than inheriting them from the style of the surrounding group
	environment. 

	* src/set.c (set_termoptions):  Allow set termoption {dashed|solid}.

	* src/term_api.h:  Add an explicit terminal flag TERM_CAN_DASH
	to indicate that the terminal can toggle between solid and dashed lines.

	* src/set.c (set_termoptions): Check flag before trying to call
	current terminal with either dashed or solid.

	* term/aquaterm.trm term/cairo.trm term/cgm.trm term/emf.trm
	term/fig.trm term/metapost.trm term/pdf.trm term/post.trm term/svg.trm
	term/tgif.trm term/x11.trm term/xlib.trm:  Add flag TERM_CAN_DASH

	* term/cairo.trm (cairotrm_set_color): When switching color via
	TC_LT, be careful not to change the dash pattern also.

2007-12-18  Ethan A Merritt  

	* src/axis.h (STORE_WITH_LOG_AND_UPDATE_RANGE): Add a new parameter
	that turns off autoscaling on a per-plot basis rather than per-axis.

	* src/datafile.c src/graph3d.h src/graphics.c src/graphics.h
	src/interpol.c src/plot2d.c src/plot3d.c: Corresponding modification
	to all the call sites.

	* src/graphics.c (do_plot recheck_ranges): Before drawing the plots,
	fill in the INRANGE/OUTRANGE flags for plots with noautoscale set.

	* src/datafile.c (df_open): Parse "noautoscale" keyword.

2007-12-17  Lars Hecking  

	* share/Makefile.am: Gnuplot is generated by make and deleted by
	'make clean'. Bring variable names in line with xorg.

2007-12-17  Ethan A Merritt  

	* src/util.c (int_error): Fix incorrect handling of va_list.

	* src/datafile.c: Call add_tic_user with a tick type of -1 (a new flag
	value) rather than 0 (major tick).  This allows to distinguish between
	tick labels read from a data file and those entered from the
	command line.

	* src/axis.c (gen_tics): Treat tick type -1 the same as major ticks.

2007-12-14  Ethan A Merritt  

	* configure.in:  Increase the chance that ./configure will correctly
	find all the pieces of gnu libreadline under OSX 1.4.

	* src/plot3d.c src/graph3d.c src/graph3d.h:
	Make 3D code use the same mechanism as 2D (plot->title_is_suppressed)
	to control whether a key title is generated. 

2007-12-13  Ethan A Merritt  

	* src/graphics.c (boundary):  Missing "else" in bounds calculation.
	Also fix trivial typo of v_char instead of h_char.

	* term/svg.trm (SVG_SetFont) term/gd.trm (PNG_options): Use strncpy so
	that overly long font names do not generate a segfault.

2007-12-09  Ethan A Merritt  

	* src/gplt_x11.c: More parsing problems with borderWidth

	* term/x11.trm:  Add a terminal option "set term x11 linewidth LW" 
	analogous to other terminal drivers.  All user-specified linewidths are
	multiplied by this factor.

2007-12-08  Ethan A Merritt  

	* src/gplt_x11.c: Command line options -bw and -borderwidth were 
	being mapped to X Resource "borderwidth".  It should be "borderWidth".
	Also remove limitation that maximum linewidth is 4 pixels.

	* share/Makefile.am: Rename Gnuplot.app-defaults to Gnuplot before
	installing it.   Bug #1784379

	* src/graphics.c (place_rectangles):  If the linestyle is LT_DEFAULT,
	nevertheless check for an explicit linewidth for this rectangle.
	Bug #1833429

2007-12-08  Petr Mikulik  

	New options "front" and "back" to "set colorbox" to let the box be
	drawn either after or below the image or surface.

	* src/gadgets.h src/gadgets.c: New "layer" field in color_box_struct.

	* src/graphics.c src/graph3d.c: Draw the colorbox at expected layers.

	* src/save.c src/set.c src/show.c src/tables.h src/tables.c
	docs/gnuplot.doc: The other necessary changes.

2007-12-05  Ethan A Merritt  

	* src/datafile.c src/datafile.h src/fit.c src/plot2d.c src/plot3d.c
	src/set.c:  Pass a pointer to the current plot header into df_open() so
	that the 'using' options can be parsed in 2D/3D context.  This has the
	side benefit of removing an ugly hack whereby df_current_plot (used by
	the histogram and key title processing) was a global. Now it is static.

2007-12-04  Shigeharu Takeno  

	* src/plot3d.c (eval3d_plots get3d_data): Implement taking key entry
	titles from datafile column headers.   'splot  using 1:2:3 title 3'

2007-12-02  Daniel Sebald  

	* configure.in, src/show.c (show_version) NEWS:  Added new feature
	--disable-x11-external. If selected, long versions shows +X11_EXTERNAL.

	* demo/gpdemos.tcl demo/Makefile.am.in: Added a wish/TCL demo that 
	displays gnuplot x11 output embedded in a tcl paneled window. The demo
	includes a minimal file browser that defaults to listing the contents of
	GNUPLOT_LIB.

	* src/gplt_x11.c (prepare_plot): Removed an integer argument that isn't
	necessary anymore after having implemented a linked list approach
	rather than a fixed number of possible plots.  Also, a plot number can
	no longer be negative.
	(record): Added an argument to the plot number command containing info
	about an external system X11 window ID.

	* src/gplt_x11.h: Added a control value for setting the X11 window ID.

	* term/x11.trm (X11_options): Added code for setting X11 window ID as
	string option.  Also, do not send command if window number is negative.

2007-12-01  Ethan A Merritt  

	* src/term.c (enhanced_recursion):  Give a warning if the enhanced text
	mode parser encounters an error.

	* src/unset.c (reset_command) docs/gnuplot.doc:  The `reset` command is
	documented to affect only the graphics output state.  Do not reset user
	interaction settings (locale, encoding, decimalsign).

2007-12-01  Allin Cottrell  

	* src/set.c src/term_api.h src/term.c docs/gnuplot.doc
	term/aquaterm.trm  term/post.trm term/pslatex.trm term/svg.trm
	term/PostScript/8859-9.ps:  Add encoding ISO_8859_9 (Latin5).

2007-12-01  Thomas Orgis  

	* src/gplt_x11.c (process_configure_notify_event):  Test for failure of
	window resize, and do not loop indefinitely trying to resize. Fixes
	infinite loop problem on ion and fluxbox window managers.
	Bug #1836959 #1614928

2007-11-29  Lars Hecking  

	* term/Makefile.am.in: Generate postscript_DATA from .ps and .txt
	files in PostScript subdir.

2007-11-25  Vladimir  

	* term/svg.trm (SVG_init): Correct encoding names to koi8-r, koi8-u.
	Bug #1838066

2007-11-24  Allin Cottrell  

	* src/wxterminal/gp_cairo.c (gp_cairo_convert): Test input for validity
	as a UTF-8 string. If it is already UTF-8, don't try to convert it.

2007-11-24  Ethan A Merritt  

	* src/variable.c (locale_handler):  Set the character encoding during
	initialization (LC_CTYPE).  This was happening anyway for interactive
	sessions using libreadline, and for default terminal type wxt.

2007-11-23  Ethan A Merritt  

	* term/fig.trm (FIG_boxfill):  Update current color before drawing.
	Bug #1837187

2007-11-22  Morten MacFly  

	* config/config.nt: #define vsnprintf

2007-11-21  Ethan A Merritt  

	* term/estimate.trm: Never return a zero size estimate for a 
	non-empty string. Promote fraction characters to 1.

2007-11-21  Allin Cottrell  

	* term/emf.trm (EMF_filled_polygon): Do not alter original color
	when processing filled areas with opacity < 1.0

2007-11-20  Ethan A Merritt  

	* term/post.trm (PS_options PS_RememberFont ENHPS_OPEN)
	src/term.c (enhanced_recursion): Move the PostScript-specific
	RememberFont() cruft out of enhanced_recursion() and into ENHPS_OPEN.
	This both cleans up the generic enhanced recursion code and removes
	code duplication.  Filter out blatently improper font names.
	Bugs #1820912 #1833457

2007-11-20  Timothee Lecomte  

	* src/wxterminal/gp_cairo.c (gp_cairo_set_termvar): Fix typo in
	commit dated 2007-11-04.

2007-11-20  Christos Gourdoupis  

	* src/wxterminal/gp_cairo.c (gp_cairo_get_encoding):
	Allow "set encoding utf8" to override whatever the environment claims.
	Bug #1834525

2007-11-19  Ethan A Merritt  
	* /config/buildvms.com /config/makefile.286 /config/makefile.amg
	/config/makefile.ami /config/makefile.emx /config/makefile.g  
	/config/makefile.msc /config/makefile.msw /config/makefile.mto
	/config/makefile.st /config/makefile.tc /config/makefile.unx
	/config/makefile.win /config/makefile.ztc src/gnuplot.opt:

	Add tabulate.{c|o|obj} to dependencies.  
	Pointed out by 

2007-11-16  Ethan A Merritt  

	* src/term.c (enhanced_recursion):  Do not allow the '}' character in a
	font name.  Prevents PostScript badness from the following user error:
	set label "Foo{/Symbol}Baz".
	Bug #1833457.

2007-11-15  Ethan A Merritt  

	* term/post.trm (PS_options):  Allow a string variable for a
	font file name.  Whitespace cleanup.

2007-11-14  Arve Knudsen  

	* configure.in: Move test for libgd libraries to earlier in script

2007-11-14  Ethan A Merritt  

	* src/plot2d.c (get_data) docs/gnuplot.doc:
	Allow 3 columns of data for plot style "histogram errorbars".
	2 column data:   y err          error bar from y-err to y+err
	3 column data:   y ymin ymax    error bar from ymin to ymax

2007-11-13  Ethan A Merritt  

	* docs/gnuplot.doc term/post.trm term/pm.trm:  Move description of
	enhanced text mode out of the postscript terminal and into the main
	documentation.

2007-11-13  Ethan A Merritt  

	* docs/checkdoc.c:  Teach checkdoc to ignore embedded figures.

	* docs/psdoc/ps_symbols.gpi:  Update to current syntax.

	* docs/gnuplot.doc:  Various minor indexing typos; mention UTF-8.

	* term/Makefile.am.in:  Add aglfn.txt to list of installed files.

2007-11-12  Ethan A Merritt  

	* term/post.trm (PS_options PS_dump_prologue_file PS_open_prologue_file
	PS_load_glyphlist) term/PostScript/aglfn.txt:  Move the list of Adobe-
	recommended glyph names (aglfn) to an external file.  Add an option
	'set term post {{no}adobeglyphnames}' to control whether UTF-8 
	characters outside of the Latin1 set are refered to by their generic
	name (e.g. /uni03B1) or their aglfn name (e.g. /alpha). 

2007-11-12  Shigeharu Takeno  

	* docs/Makefile.in: Include cairo.trm in CORETERM list

	* docs/gnuplot-ja.doc docs/term-ja.diff:  Sync to version 1.457

2007-11-11  Ethan A Merritt  

	* term/post.trm (PS_options PS_load_fontfile PS_load_fontfiles):
	Add a field to the fontfile structure to hold the font name.
	Use this to reencode the font immediately after it is read in, rather
	than the first time of use.  This fixes a bug if the first use is at
	the start of enhanced text processing.

2007-11-11  Philipp K Janert

	* docs/gnuplot.doc: Correct an error in "help show palette".

2007-11-11  Ethan A Merritt  

	* term/post.trm (PS_options): Accept *.otf fonts.

	* term/post.trm (ENHPS_OPEN ENHPS_WRITEC) term/PostScript/prologue.ps):
	Add UTF-8 encoding support for enhanced text mode.

	* term/PostScript/unicode_small.map term/PostScript/unicode_big.map
	term/PostScript/unicode_maps.README:  Provide sample files and a README
	for constructing UTF-8 encoded Type 1 fonts for the postscript terminal
	to use.  Many thanks to Thomas Henlich for the initial example and
	explanation.

2007-11-11  Thomas Henlich  

	* term/post.trm (PS_put_text) term/aglfn.h term/PostScript/utf-8.ps
	src/util.h src/util.c (utf8_getmore utf8toulong):

	Add UTF-8 encoding support for PostScript terminal. This implementation
	supports PostScript Type1 fonts that use glyph names conforming to the
	Adobe Glyph List For New Fonts. Code points above 0x00FF are displayed
	PostScript glyphshow operator.  Code points above 0x01FF are assumed to
	be accessible as /uniXXXX glyphshow.

2007-11-08  Ethan Merritt  

	* demo/utf8.dem demo/enhanced_utf8.dem demo/all.dem:
	Update utf8 demo, and add a new one for enhanced text mode.

2007-11-05  Ethan Merritt  

	* term/post.trm: Place general postscript prolog in front of special
	encodings (if any).

	* term/PostScript/*.ps: Place a comment at the start of included
	encoding vectors.

2007-11-04  Timothee Lecomte  

	* src/wxterminal/wxt_gui.cpp (wxtFrame::OnClose): Fix compilation when
	USE_MOUSE is not defined.

	* src/wxterminal/gp_cairo.h (gp_cairo_set_termvar)
	src/wxterminal/gp_cairo.c
	src/wxterminal/wxt_gui.cpp
	term/cairo.trm:
	Do not use the global "term" pointer, but pass values by addresses.

2007-10-31  Ethan Merritt  

	* term/post.trm term/pslatex.trm: To forestall confusion, add a comment
	that ISO8859-15 is the same thing as Latin9.

2007-10-30  Christian Faulhammer (v-li@users.sourceforge.net)

	* docs/doc2texi.el: Gentoo patch to allow for changed handling of
	newlines in up-coming version of XEmacs. Needed in order to 
	regenerate gnuplot.texi on such a system.
	Bug #1822610

2007-10-29  Petr Mikulik  

	* docs/gnuplot.doc: Document option "pm3d depthorder" within
	"help pm3d".

2007-10-27  Ethan Merritt  

	* docs/gnuplot.doc src/graphics.c src/graphics.h src/save.c src/show.c
	src/set.c (set_bars) src/unset.c:  Add {front|back} options to the
	'set bars' command. This controls whether or not a solid-fill box or
	histogram bar obscures the lower errorbar.

2007-10-26  Ethan Merritt  

	* src/graph3d.c (do3d_plot): Fix (another) bug in space allocation
	for key title.  This one was also present in 4.2
	Bug #1817873

	* src/eval.c (pop_or_convert_from_string): Switch from use of atof()
	to strtod() so that we can trap errors in auto-conversion from string
	to number during expression evaluation.

	* src/wxterminal/gp_cairo.c (gp_cairo_end_polygon): Re-order code to
	quiet an annoying compiler warning.

2007-10-23  Christer Lundberg  

	* term/post.trm: A font name containing spaces must be protected by
	parentheses in PostScript output.

2007-10-23  Ethan Merritt  

	* src/graph3d.c (do3d_plot): Fix bug in space allocation for
	key title.
	Bug #1817873

2007-10-23  Ethan Merritt  

	Add a mechanism to embed figures in TeX-based documentation

	* docs/README docs/doc2???.c: 'F' in first column of gnuplot.gih
	indicates an embedded figure. The text immediately following is the 
	filename of the (pdf) figure. doc2tex emits a suitable \includegraphics
	call, everyone else ignores the whole line.

	* docs/titlpage.tex: Include packages graphicx and picins.

	* docs/plotstyles.gnu docs/histopt.dat: Script to create figures
	illustrating various plot styles.

	* docs/Makefile.in:  New target "make pdffigures".

	* docs/gnuplot.doc:  Expand the section on plot styles, and embed
	suitable figures to illustrate.

	* docs/gnuplot.doc:  Document `set pm3d depthorder`.

	* docs/gnuplot.texi: Sync.

2007-10-21  Ethan Merritt  

	* src/misc.c (lp_use_properties): Do not overwrite previously set
	value of pointflag. (Missed one code path in yesterday's patch).

	* src/save.c (save_linetype): Save point properties whether or not
	pointflag is set.

2007-10-20  Ethan Merritt  

	Patch 1 of 2: Rationalize use of the pointflag Boolean in lp_style_type.
	The current code relies on lp_parse() to set this flag as a side effect,
	but this is not correct. lp_parse() uses the flag to determine whether
	point style options are legal in the current context. This is not always
	the same thing as saying that the current plot will have points.
	In particular, it is reasonable to set point properties in linestyles,
	yet not all plots using that linestyle will actually contain points.
	This caused some plots with lines to be drawn as linespoints.

	* src/misc.c (lp_parse lp_use_properties): Do not set the pointflag.

	* src/plot2d.c src/plot3d.c: At the end of parsing plot options, set 
	lp_properties.pointflag based on the PLOT_STYLE_HAS_POINT flag in the
	plot_style field of the plot structure.

	Patch 2 of 2: Remove 3rd parameter of lp_use_properties(), which is no
	longer used.

	* src/color.c src/gadgets.c src/graph3d.c src/graphics.c src/misc.c
	src/misc.h src/plot2d.c src/plot3d.c src/term_api.h src/util3d.c

2007-10-19  Ethan Merritt  

	* src/util3d.c (draw3d_line_unconditional): Check for user-defined
	line styles when choosing colors for front/back of hidden surfaces.

	* src/misc.c src/hidden3d.c: Clean up comments emphasizing that basic
	line properties must be initilized before calling lp_use_properties().

	* src/color.c (draw_color_smooth) src/graph3d.c (do_3dplot cntr3d_lines)
	src/misc.c (lp_use_properties):  Failure to initialize structure passed
	to lp_use_properties().
	Bugfix.

2007-10-17  Ethan Merritt  

	* src/command.c (pause_command): Accept a string expression as the
	final parameter to "pause" commands.

2007-10-16  Ethan Merritt  

	* INSTALL NEWS PORTING README configure.in configure.vms
	config/* docs/doc2texi.el docs/gpcard.tex docs/Makefile.in
	src/makefile.all src/makefile.awc src/term.h term/iris4d.trm
	term/vws.trm:

	Remove the long-obsolete IRIS4D terminal.  This terminal never was the
	preferred option even on a real IRIS4D (I had one!), and would no longer
	compile and link on SGI descendents of the IRIS4D as of 3 years ago.

	* docs/gnuplot.texi:  Sync to current gnuplot.doc

2007-10-16  Ethan Merritt  

	* src/eval.h src/eval.c (update_gpval_variables) src/util.c (int_error)
	src/unset.c (reset_command): Maintain error state variables.
	GPVAL_ERRNO is set to a non-zero value whenever an error occurs.
	GPVAL_ERRMSG holds the corresponding error message string.
	Both are reset by the new command 'reset errors'.

	* docs/gnuplot.doc: Revise the section on internal variables, adding
	mention of the new error state variables.

2007-10-11  Ethan Merritt  

	* src/term.c (change_term): Fix stupid error that caused 
	'set term png ' to fail.
	Bug #1810957

	* term/cairo.trm (cairotrm_options): Ignore "transparent" keyword when
	the output mode is pdf.

2007-10-10  Timothee Lecomte  

	* term/cairo.trm (cairotrm_init): Do the sanity check for an existing
	*cairo terminal once and for all.
	Apply hinting in the pngcairo terminal: pngs are bitmapped, so they
	look much better with lines at integer positions.
	Also apply the "saturate" technique to get seamless polygons in pm3d
	mode.

2007-10-07  Ethan Merritt  

	* term/cairo.trm:  Differentiate cairo png and pdf terminals.
	Set separate defaults for canvas size, font size, and linewidth.
	Output png to a stream so that it can be piped for interactive display.
	Ignore irrelevant keywords used by libgd-based png terminal.
	Add "transparent" keyword for png.

2007-10-06  Ethan Merritt  

	* term/cairo.trm: Change all internal variable names from cairopdf_* to
	cairotrm_* since the code now supports multiple cairo-based terminals.
	Later we will introduce parallel variables cairopdf_*, cairopng_*, etc
	wherever there is a need to distinguish different terminals.

	* demo/html/Makefile demo/html/webify.pl:  Update syntax for font
	specifications.

2007-10-06  Ethan Merritt  

	* term/cairo.trm src/wxterminal/gp_cairo.c (gp_cairo_solid_background 
	gp_cairo_clear_background) wxterminal/gp_cairo.h wxterminal/wxt_gui.cpp:
	Provide alternative routines to initialize the background to either
	solid white or transparent.

2007-10-06  Ethan Merritt  

	* src/term.c (change_term):  Always accept the full name of a terminal,
	even if it is a leading substring of a longer name.  E.g. accept
	"set term pdf" even if there are both pdf and pdfcairo terminals.

	* term/cairo.trm configure.in:  Convert cairo.trm to be shared by
	more than one cairo-based terminal type.  Change the pdf terminal name
	from "cairopdf" to "pdfcairo".  Add a parallel terminal entry table for
	"pngcairo".  Test for output type (pdf or png) in term->init() and
	term->reset().  All other code is shared at this point.

2007-10-05  Ethan Merritt  

	* src/plot2d.c (eval_plots): Load first/second axis information into 
	the head of the label list for plot mode LABELPOINTS.
	Bug #1807015

2007-10-03  Ethan Merritt  

	* term/cgm.trm (CGM_options): Remove spurious c_token++, which caused
	parsing to skip the font size in:  set term cgm "fontname" fontsize

2007-10-02  Ethan Merritt  

	* src/binary.c src/binary.h src/bf_test.c: Rename the routine vector()
	to alloc_vector().  This avoids a conflict with the "vector" keyword on
	PowerPC OSX with Altivec compiler options enabled.
	Bug #1754164

2007-10-01  Ethan Merritt  

	* src/graphics.c (bound_intersect):  Fix a degenerate case in the
	intersection test that caused a divide by zero.
	Bug #1805697

2007-09-29  Hanno Hoffstadt  

	* term/Postscript/prologue.ps: Add an explicit 'closepath' before
	filling a rectangle. This is not required by the language spec, but
	works around a bug in Adobe Distiller 7 and Apple's Quartz Preview.
	Bug #1771533

2007-09-28  Ethan Merritt  

	* demo/html/Makefile demo/html/index.save:
	Update to include latest demos

2007-09-28  Hanno Hoffstadt  

	* src/graphics.c (do_plot) src/graph3d.c (do_3dplot):  It is necessary
	to call term->previous_palette() at the end of any 2D plot or 3D plot
	that used custom rgb colors.
	Bug #1803337

2007-09-27  Ethan Merritt  

	* src/term.c src/set.c(set_encoding) src/show.c(show_encoding)
	src/gplt_x11.c:

	Add "utf8" to the list of options accepted by "set encoding".
	Modify "show encoding" to report the current environmental locale as
	well as the encoding that gnuplot thinks it is using. Resolving any
	conflict is left to the user.

	Most terminal drivers need take no special action if the encoding is
	UTF-8. PostScript is a major exception.  It is also useful for the
	libgd-based terminals if you want to force UTF-8 encoding lookup in
	the Adobe Symbol font. This patchset implements the command itself.
	Actual libgd and PostScript support will be added separately.

2007-09-24  Ethan Merritt  

	* src/mouse.c (do_save_3dplot): If the log scale setting has changed
	for any axis, we must do a full replot rather than a shortcut during
	mouse-driven rotation.  This is equivalent to the replot instead of
	refresh code used for zooming, so we can use the same flag (refresh_ok)
	to test for it.
	Bug #1797500

2007-09-23  Ethan Merritt  

	* src/axis.c (gen_tics): On log scale plots with very large range,
	the minitic interval can overflow integer representation.
	Bug #1797500

	* term/gd.trm (PNG_image): gdImageGetClip was introduced in libgd
	version 2.0.12.  Don't try to use it if GD2_VERS is less than 2.
	Bug #1790171

2007-09-01  Ethan Merritt  

	* src/datafile.h src/datafile.c: make df_eof static rather than global.
	* src/plot3d.c (eval_3dplots get_3ddata): Track return code from df_readline
	directly rather than relying on a global df_eof that mirrors it.

2007-08-31  Ethan Merritt  

	Version 2.9.? of Octave switched to piping all data to gnuplot in-line
	rather than via a temporary file.  This broke mouse zooming and replot.

	This patchset is an imperfect fix with several known problems:
	- Clipping of zoomed 3D contour plots is not correct.
	- splot volatile with image + zoom + unzoom is flaky
	- plot -> zoom -> set grid -> unzoom   loses the grid setting.
	- you cannot toggle log scaling on/off while using refresh.

	Introduce a new command "refresh" that acts like replot except that it
	does not re-read the input data.  Refresh is always needed in order to
	zoom or replot in-line data (input file '-'), but may optionally applied
	to normal data files also by appending the attribute 'volatile'.

	* src/plot2d.c (eval_plots): This is the core change. Instead of 
	freeing stored data after each plot, keep it around in case of a
	refresh command. The old data storage is freed at the start of the next
	"plot" or "replot" command.  This is parallel to what the 3D code was
	already doing. Set refresh_ok = 2  at the end of a successful plot.

	* src/plot3d.c (eval_3dplots): Update comments and remove dead code.
	Set refresh_ok = 3  at the end of a successful plot.

	* src/plot2d.c (refresh_bounds) src/plot2d.h
	* src/plot3d.c (refresh_3dbounds) src/plot3d.h:
	Provide a mechanism to recheck the INBOUNDS/OUTBOUNDS status of 
	existing data points after changing the current axis limits.

	* src/command.c (refresh_command refresh_request) src/command.h
	src/gadgets.c src/gadgets.h src/tables.c:  New command "refresh" that
	acts similarly to "replot" except that it does not re-read input data.

	* src/axis.h (AXIS_UPDATE2D): Save/restore axis limits for zooming.

	* src/mouse.c (apply_zoom): Choose between refresh or replot depending
	on whether the current plot contain volatile data.

	* src/mouse.c (builtin_toggle_log): Ignore 'l' and 'L' for volatile data

	* src/set.c (set_logscale) src/unset.c (unset_logscale):
	Because setting or unsetting log scale changes the way input data is
	stored, "refresh" cannot work if the log setting has changed.
	Set a flag indicating that a full replot is necessary.

	* src/datafile.c (df_open): Accept a "volatile" keyword to indicate
	that data in the input file may change. If data is input from pseudo-
	device '-' or from a file marked "volatile", set a global flag so
	that mousing/zooming/etc can choose to refresh rather than replot.

	* docs/gnuplot.doc configure.in

2007-08-29  Ethan Merritt  

	* demo/all.dem demo/running_avg.dem demo/html/index.save:
	Demonstrate use of new syntax operators = and , as part of a using
	statement.  The demo plots a running average and a sliding average.

2007-08-27  Ethan Merritt  

	* src/parse.c (parse_primary_expression) src/internal.c (f_pop)
	internal.h eval.c eval.h docs/gnuplot.doc: 
	Extend expression parsing to accept ',' separating two expressions.

2007-08-27  Ethan Merritt  

	* src/parse.c (parse_expression parse_assignment_expression):
	Extend expression parsing to accept '=' as an assignment operator.

	* src/internal.h src/internal.c (f_assign): New internal function.
	src/eval.h src/eval.c:  table entry for f_assign()

	NEWS, docs/gnuplot.doc: Document assignment operator '='

2007-08-26  Ethan Merritt  

	* config/config.cyg config/config.mgw config/config.nt config/config.os2
	config/config.oww config/config.wc config/config.dj2 configure.in 
	src/command.c src/datafile.c src/datafile.h src/eval.c src/eval.h
	src/gp_types.h src/internal.c src/internal.h src/mouse.c src/parse.c
	src/parse.h src/scanner.c src/set.c src/show.c src/standard.c src/term.c
	src/util.c src/util.h

	Remove the conditional compilation flag GP_STRING_VARS.  This means that
	string variables are always supported.

2007-08-26  Ethan Merritt  

	* src/axis.c src/gadgets.c (apply_pm3dcolor): Remove dead code.

	* src/plot.c src/plot2d.c src/plot3d.c src/term.c: Whitespace cleanup.

	* docs/titlepag.tex: Add URL for SourceForge site.

2007-08-25  Ethan Merritt  

	* src/graph3d.c (do_3dplot):  Revise handling of the key title to match
	the 2D code.  Honor key title font, fix incomplete horizontal line in
	key box if there are multiple columns of key entries.

	* term/gd.trm (PNG_vector):  Better accounting of when the grid linetype
	needs to be refreshed. 
	Bug #1780449

2007-08-20  Timothee Lecomte  

	* src/wxterminal/gp_cairo.c (gp_cairo_draw_polygon,
	gp_cairo_end_polygon): Introduce a small piece of code, unused, but
	illustrative of the way the "saturate" operator is used to draw pm3d
	polygons without seams.

	* src/wxterminal/gp_cairo.c (gp_cairo_fill_pattern): Do not use
	negative coordinates to create hash patterns. This gives corruption
	with recent cairo versions (1.4.10 for example). Instead create them
	with rotations and scaling.
	Also scale the linewidth of the patterns with PATTERN_SIZE instead
	of its inverse.

	* src/wxterminal/gp_cairo.c:
	* src/wxterminal/gp_cairo.h:
	* src/wxterminal/wxt_gui.cpp:
	* term/cairo.trm:
	Disable the use of the SATURATE operator for the cairopdf terminal,
	keep using it for wxt. That way no bitmap fallbacks are used for pm3d
	polygons in the	pdf, however they are rendered with seams as in the
	current libpdf terminal or in the svg terminal.

2007-08-18  Daniel Sebald  

	* src/save.c (save_range):  The output of "show range" lists the
	current value in a comment.  However, up until now the value listed was
	not really the current value.  Fix this.
	Bug #1731160

2007-08-17  Ethan Merritt  

	* docs/gnuplot.doc: Remove extraneous {} from entry for 'set timestamp'.
	The offset must not begin with a leading comma.

2007-08-12  Ethan Merritt  

	* src/color.c (cbtick_callback)
	src/graph3d.c (xtick_callback ytick_callback ztick_callback)
	src/graphics.c (xtick2d_callback ytick2d_callback):
	The callback routines were testing for TC_DEFAULT in the wrong field
	(colorspec.lt instead of colorspec.type).
	Bug #1771240

	* demo/electron.dem:  Remove the "offset command", which is buggy, and
	use a consistent x axis.  Still need to fix the bug in offset, however.
	Bug #1744139

2007-08-11  Ethan Merritt  

	* src/plot2d.c (box_range_fiddline):  Add a check to prevent auto-scaled
	boxes from being cut off by a half-box width at each end of the range.
	Bug #1638190

2007-08-06  Ethan Merritt  

	* src/wxterminal/gp_cairo.c (gp_cairo_stroke): Make the dots in lt 0
	look more like dots.

	* term/cairo.trm src/wxterminal/gp_cairo.c src/wxterminal/gp_cairo.h:
	Add dashlength option to cairopdf terminal.

2007-08-06  Petr Mikulik  

	* term/x11.trm (X11_text): Fix conditionally missing {.

2007-08-04  Matthias Habl  

	* configure.in: Allow to configure from inside an emacs script.
	Bug #1741156

2007-08-04  Ethan Merritt  

	* missing:  Nobody "really needs" makeinfo.  Allow installs without it.

2007-08-03  Ethan Merritt  

	* src/set.c (set_encoding) docs/gnuplot.doc:  New command
	`set encoding locale` attempts to query the runtime environment for
	the character encoding of the current locale setting (LC_CTYPE).

2007-08-02  Daniel Sebald  

	* src/hidden3d.c (intersect_line_plane intersect_line_line
	cover_point_poly): New helper routines.

	* src/hidden3d.c (in_front): Replaced occlusion tests 4-9 by a more
	general approach that handles all of these cases jointly. This results
	in substantial code reduction, and fixes several reported cases where
	occluded line fragments 'leaked through' the occluding surface.
	Bugs #1718109 #1726773 #1727198

	EAM - code reviewed and bug fixes confirmed.

2007-08-02  Ethan Merritt  

	* src/command.c (read_line): Treat line extension consistently
	for both interactive and non-interactive input paths. This is 
	Timothee Lecomte's version of the fix.
	Bug #1753069.

	* docs/gnuplot.doc: Clarify gprintf() description.

2007-08-01  Ethan Merritt  

	* src/graphics.c (fill_between): Fix clipping bug introduced by
	polar filledcurve patches.

2007-07-27  Dietmar Warning  

	* term/win.c (WIN_enhanced_open): Avoid compiler warning.

2007-07-24  Ethan Merritt  

	* docs/gnuplot.doc docs/gnuplot.texi:  Add a trailing blank after
	"^6 origin" to suppress error from makeinfo.  Update texi file.

2007-07-24  Shigeharu Takeno  

	* docs/gnuplot.doc: Fixed misprint in "3 multi-branch".

2007-07-24  Petr Mikulik  

	* term/win.trm: Document reading of wgnuplot.ini in user's %APPDATA%
	directory.

2007-07-22  Ethan Merritt  

	* src/graphics.c (fill_between): Calculate intersection points for
	polar plots using filledcurves, split self-crossing quadrilaterals
	into two pieces.

2007-07-21  Ethan Merritt  

	* src/graphics.c (fill_between): For polar plots using filledcurves,
	interpret "above" and "below" in terms of relative radial distance
	from the origin.

2007-07-21  Timothee Lecomte  

	* src/wxterminal/wxt_gui.cpp:
	* src/wxterminal/wxt_gui.h:
	Nuke the event list and the associated mutex and state variables.
	Instead, use a pipe to transmit events from the GUI thread to
	term->waitforinput. select() is called without any timeout,
	which is best way to use it.

2007-07-20  Timothee Lecomte  

	* term/cairo.trm: Use cairopdf_rounded instead of wxt_rounded. The two
	terminals are independant.

2007-07-19  Ethan Merritt  

	* src/graphics.c (plot_betweencurves fill_between): 
	Allow fill between curves to [sort of] work for polar coordinate plots.
	Not implemented: "above" "below" intersecting curves, self-closure.

2007-07-17  Ethan Merritt  

	* src/fit.c (fit_command):
	Accept a string variable as the file name for "fit via ".
	Bug #1755532

2007-07-16  Timothee Lecomte  

	* term/cairo.trm: 
	* src/makefile.all:
	* src/term.h
	* configure.in:
	* src/Makefile.am:
	New pdf terminal based on cairo and pango. Shares most code with wxt.
	Currently named 'cairopdf'.

	* src/wxterminal/gp_cairo.c (gp_cairo_stroke): more dash patterns.

	Patch #1651015.

2007-07-16  Ethan Merritt  

	* src/internal.c (f_sprintf) docs/gnuplot.doc:
	Remove limitation of 10 args max to internal function sprintf().
	Bug #1753756.

2007-07-16  Shigeharu Takeno  

	* docs/gnuplot-ja.doc docs/term-ja.diff: Sync Japanese documentation.

2007-07-16  Petr Mikulik  

	* doc/gnuplot.doc: Minor changes.

2007-07-12  Ethan Merritt  

	* src/graphics.c (plot_histeps):  The initial move was not clipped to
	the canvas, which caused segfaults in the pdf terminal. Add a clipping
	test.  FIXME:  This entire routine should be rewritten to use
	draw_clip_line().

	* src/wxterminal.c (gp_cairo_draw_point):  Apply current linewidth to
	the line making up a point symbol.

2007-07-11  Ethan Merritt  

	* docs/gnuplot.doc: More cleanup.

2007-07-10  Ethan Merritt  

	* docs/gnuplot.doc: Add a section for 'rgbcolor variable'.

	* docs/gnuplot.doc: Move plot style descriptions up by one major level.

	* docs/gnuplot.doc: Consistent use of '2D' and '3D'.

2007-07-06  Daniel Sebald  

	* docs/gnuplot.doc: There are two entries for 'ticslevel' which is a
	problem for more recent 'help'.  Remove one that says "see xyplane"
	so that new help goes directly to 'xyplane' just like old help.

2007-07-04  Ethan Merritt  

	* src/mouse.c (apply_zomm): Try an alternative path for replot after
	unzoom. This may or may not fix the problem in bug report #1746902.

2007-07-02  Ethan Merritt  

	* src/plot2d.c (eval_plots) src/plot3d.c (eval_3dplots): Initialize
	start_token to 0 to quiet bogus compiler warnings.

2007-06-30  Timothee Lecomte  

	* src/help.c (OutLine_InternalPager): Fix compilation when PIPES is not
	defined. Thanks to Dietmar Warning for the report.

2007-06-29  Daniel Sebald  

	* src/datafile.c (df_generate_pseudodata): Correct for logscale
	axes in splot.

2007-06-29  Ethan Merritt  

	* src/axis.c (load_range): Revert change of 2004-03-15. This means
	that we do *not* clear the RANGE_REVERSE flag after applying the
	reversal. This is necessary for the upcoming "refresh" support, but
	also fixes a current bug:   
	set xrange [*:*] reverse; plot ;  
	flag is now clear, and subsequent plots are drawn backwards

	* src/mouse.c (apply_zoom): Rework the save/restore mechanism for 
	axis ranges during zoom operations.  Preparation for "refresh"
	support.

2007-06-27  Daniel Sebald  

	* src/misc.c (iso_alloc):  Set p_count to zero when structure is
	initialized.

2007-06-27  Ethan Merritt  

	* src/gplt_x11.c: Avoid a compiler warning about null bytes in a
	format statement.

2007-06-26  Timothee Lecomte  

	* src/wxterminal/wxt_gui.cpp (wxt_update_size, wxtFrame::wxtFrame):
	* src/wxterminal/wxt_term.h:
	* term/wxt.trm:
	Add option to set the window size: 'set term wxt size width,height'

2007-06-22  Ethan Merritt  

	* docs/gnuplot.doc:  Make sure a line beginning with a number
	(i.e. a section heading) is followed immediately by a parallel entry
	beginning with '?'.  Not applied in the NEWS section, however.
	Bug #1655632

	*docs/gnuplot.texi: Sync to current doc file.

	* src/internal.c (f_sprintf): Apply LC_NUMERIC setting to all strings
	created via a call to sprintf during expression evaluation.
	Bug #1740017

2007-06-22  Timothee Lecomte  

	* src/plot.c (inter): Cleanup: Use bail_to_command_line() instead of
	LONGJMP directly.

2007-06-21  Daniel Sebald  

	* src/graph3d.h: Remove fields 'ticslevel' and 'xyplane_z' from 
	struct t_xyplane; replaceboth with 'z'.

	* src/tables.h src/tables.c:  Added S_XYPLANE to better distinguish
	between "set xyplane" and "set ticslevel", i.e., no need to move
	token backward.

	* src/mouse.c src/save.c src/show.c src/unset.c:  Minor mods for
	variable name change and addition of S_XYPLANE.

	* src/set.c:  Broke set_ticslevel into set_ticslevel and set_xyplane.

	* src/graph3d.c: Fixed bug with drawing xyplane and z-axis line.
	Bug #1488168

2007-06-21  Ethan Merritt  

	Fix two special cases where gnuplot auto-increments the line type, but
	does not check whether the user has requested user-defined line styles
	instead (via "set style increment user").

	* src/graph3d.c (do_3dplot cntr3d_lines):  If the [default] option
	`set clabel` is in effect then contours auto-increment over line types.
	Check for prefer_line_styles at this point.

	* src/graphics.c (do_plot plot_boxes): Columnstacked histograms auto-
	increment over line types.  Check for prefer_line_styles at thie point.

2007-06-21  Timothee Lecomte  

	* src/readline.c (readline_ipc): Cleanup: do not use the so-called
	"alternate interface" to GNU Readline, it is useless here. The only
	required thing is setting rl_getc_function.

	* src/gpexecute.c (gp_exec_event): Cleanup: Use DEBUG and FPRINTF.

	* src/help.c (ShowSubtopics): Do not print the list of available
	subtopics with the external pager (the one from the PAGER variable).
	When using 'less' as the pager, the list was not visible any longer
	at the time the user is prompted for a subtopic.
	(StartOutput, OutLine, OutLine_InternalPager): Built-in pager: try to
	get the screensize with the LINES environment variable. It is a UNIX
	standard. Fallback to the default size (24) if there is an error.
	The help text is now nice to read even with the built-in dumb pager.

2007-06-17  Ethan Merritt  

	* src/internal.c (f_sprintf): Remove any remaining escape sequences (%%)
	from the tail of the format string after all of the input variables have
	been processed.
	Bug #1739625

2007-06-17  Ethan Merritt  

	* src/save.c (save_tics): save [xyz]tics must not follow the "offset"
	info with a bare number, because a negative number will be mis-parsed.
	Bugfix.

2007-06-12  Daniel Sebald  

	* src/gplt_x11.c:  Added a cmap_struct for linked list of colormaps for
	plot_struct so that a needed colormap is not discarded.
	(FreeColormapList):  New function to free all colormaps in linked list.
	(delete_plot):  Call FreeColormapList().
	(prepare_plot):  Initialize plot->first_cmap_struct to NULL at first
	use.  Call FreeColormapList() and release no longer needed resources.
	(record, case X11_GR_MAKE_PALETTE):  Stored a command into the plot
	buffer to indicate a palette/colormap change.  Removed cruft.
	(exec_cmd, case 'e'):  Switched to the recorded colormap.
	(RecolorWindow):  Added the used colormap to the linked list so that
	all colormaps for the plot are remembered.
	(Find_Plot_In_Linked_List_By_CMap):  Search colormap linked list.
	Bug #1447277

	* demo/multipalette.dem:  Two palette multiplot script for debugging.

2007-06-11  Ethan Merritt  

	* term/gd.trm (PNG_options PNG_vector): Apply current linewidth and
	dashlength to dotted lines. Of course, the only dotted line support
	we have at this point is linetype 0, used for the grid and axes...
	Based on Mike Sutton's patchset #1659135

2007-06-10  Ethan Merritt  

	* docs/gnuplot.doc: Break out "axes" into its own subsection, and add
	cross-references so that people can find it.

2007-06-09  Ethan Merritt  

	* term/wxt.trm (wxt_text_wrapper): At the end of a plot, save the final
	axis scaling information so that mouse coordinates can be tracked.

	* src/wxterminal/wxt_term.h src/wxterminal/wxt_gui.h:
	Define data structures that hold axis scaling information.

	* src/wxterminal/wxt_gui.cpp (wxt_update_mousecoords_in_window
	mouse_to_axis wxt_exec_event): Track mouse motion for all plots.
	If the plot is not active, handle status line update locally rather
	than calling back into gnuplot core code.

	* demo/multiaxis.dem: Split out 3rd plot of electron.dem into a 
	separate file, where it can serve as a demo of using x2, y2 axes.

	* demo/html/index.save demo/html/Makefile: Update html demo set.

2007-06-08  Timothee Lecomte  

	* src/wxterminal/wxt_gui.cpp (wxt_close_terminal_window): Send a
	"Close event" to the event loop instead of using the default method
	which doesn't work immediately with a threaded event loop. "set term
	wxt close" now works without delay.

2007-06-08  Ethan Merritt  

	* src/mouse.c (do_event): Explicitly ignore mouse clicks from windows
	other than the current plot window.

	* src/wxterminal/wxt_gui.cpp (wxt_exec_event): Pass through events from
	all plot windows. This is necessary in order for "bind all" to work.

2007-06-07  Ethan Merritt  

	* src/unset.c (unset_label): Do not treat "unset label " as a fatal
	error just because label  is not currently defined. Bug #1732706

	* term/post.trm (PS_load_fontfile): Add missing %.  Bug #1732991

2007-06-06  Petr Mikulik  

	* doc/gnuplot.doc: Hotkey 'q' does not close the pm terminal.

2007-06-05  Timothee Lecomte  

	* src/wxterminal/wxt_gui.cpp (wxt_atexit): Fix commit of 2007-05-23.

2007-06-05  Ethan Merritt  

	* src/graphics.c (plot_image_or_update_axes) src/graphics.h
	src/graph3d.c src/plot2d.c:  Remove the macros wrapping
	plot_image_or_update_axes and simplify the API by removing an
	unneeded parameter. This simplifies debugging.

2007-06-04  Petr Mikulik  

	* term/djsvga.trm: Unify color sequence comply with other terminals.
	Fix DJSVGA_set_font(fontname) for an empty fontname.

	* src/plot.c (main): Avoid printing "??Unknow" as the System welcome
	message under some versions of DOS (compilation by DJGPP).

	* config/config.dj2: Define HAVE_STRINGS_H.

2007-06-03  Petr Mikulik  

	* src/history.c (write_history_n): Cannot use int_error() when exiting
	gnuplot.

2007-06-03  Petr Mikulik  

	* config/config.amg config/config.cyg config/config.mgw: Removed
	PNG_FOR_GIF.

	* config/makefile.cyg config/makefile.mgw: Removed PNG_FOR_GIF and GIF.
	Write requirement for gd 2.0 and newer. Enable GIF_ANIMATION and JPEG.

2007-06-01  Ethan Merritt  

	* INSTALL: Remove obsolete instructions for unix builds without
	./configure, old png driver.

2007-06-01  Timothee Lecomte  

	* src/command.c (read_line): Introduce a new static function
	'gp_get_string' called by read_line(), so that #ifdefs are grouped and
	read_line() is more readable.
	(help_command)[_Windows && NO_GIH]: trivial cleanup of #ifdef.

2007-05-31  Ethan Merritt  

	* docs/gnuplot.doc: Clean up the section on the 'bind' command.

	* src/mouse.c: Update the dump of current hotkeys so that it doesn't
	claim to apply only to x11.

2007-05-31  Petr Mikulik  

	* src/command.c (pause_command): On Windows, Gnuplot always bailed to
	command line after "pause mouse".
	Print the message of "pause " into the gnuplot terminal
	unless for "pause -1 " (message box).

2007-05-30  Petr Mikulik  

	* src/makefile.all: Added tabulate.$(O).

2007-05-25  Ethan Merritt  

	* term/latex.trm: Add an explicit size option; clarify documentation.
	set terminal {latex | emtex} {default | {courier|roman} {}}
		     {size {unit}, {unit}}
	This brings the latex terminal into line with other terminals in 4.2

2007-05-23  Ethan Merritt  

	* Make a concession to non-compliant svg viewers and clean up the scope
	of tspan elements.  Many current generation svg viewers do not implement
	"em" space units.  To coddle these, we back off to approximating
	1 em == 1.1 * fontsize in points.

2007-05-23  Timothee Lecomte  

	* src/wxterminal/wxt_gui.cpp:
	* src/wxterminal/wxt_gui.h:
	Add/rewrite a few debugging messages.
	(wxt_atexit, wxt_cleanup): Simplify "persist" and exit code.

2007-05-23  Ethan Merritt  

	* term/svg.trm: Give font sizes explicitly in pt units.

	* term/svg.trm: Subscript/superscripts position must be done using
	relative offsets, not absolute offset. Otherwise it prematurely 
	terminates the scope of the surrounding "chunk" of text.

2007-05-22  Petr Mikulik  

	* src/command.c (pause_command): On Windows, "pause -1" does not work
	if it is the 1st command in a script. Bug #1713350.

2007-05-22  Matthias Habl  

	* docs/gnuplot.doc: Clarify that all x and y axis labels may be 
	rotated, but only in 2D and only for terminals that support it.

2007-05-22  Timothee Lecomte  

	* src/wxterminal/wxt_gui.cpp (wxt_sigint_restore): properly pass a
	pointer to signal()

	* src/wxterminal/wxt_gui.cpp:
	* src/wxterminal/wxt_gui.h:
	Introduce macros WXT_MULTITHREADED and WXT_MONOTHREADED to simplify the
	code here and there.
	Introduce wxtApp::SendEvent and wxtFrame::SendEvent that are wrappers
	to AddPendingEvent (asynchronous) or ProcessEvent (synchronous)
	respectively in the multi- or monothreaded cases.
	(wxt_init, wxtApp::OnCreateWindow): Do the window creation in the GUI
	thread (in the multithreaded case) by sending an event.
	This is preparatory work for wxMac support.

2007-05-19  Ethan Merritt  

	* demo/fillcrvs.dem:  Add world map as demo of closed filled curves
	from a file.

	* src/set.c (set_decimal): Follow POSIX standard with regard to finding
	the value of LC_NUMERIC from the environment. Use the first match to
	LC_ALL, LC_NUMERIC, or LANG.
	Bug #1692541

2007-05-18  Timothee Lecomte  

	* src/wxterminal/wxt_gui.cpp:
	* src/wxterminal/wxt_gui.h:
	Cleanup the way wxExitLoop events are sent on exit.

2007-05-17  Ethan Merritt  

	* src/win/wgraph.c (GraphClose) src/wxterminal/wxt_gui.cpp (OnClose):
	Pass window close event through to event_reset(). x11 already did this.

	* src/mouse.c (event_reset): Dummy up a keystroke event containing a
	synthetic keystroke GP_Cancel.  Pass this through to event_keypress()
	so that it will check for a user-specified binding to the window close
	event.

	* src/mouse.h src/mousecmn.h: Define the synthetic keystroke GP_Cancel.

	* docs/gnuplot.doc: Document that you can now bind a window close
	event just as you would a real key:    bind Close 'print "\n\nAyiii!\n"'

2007-05-16  Ethan Merritt  

	* src/plot2d.c (get_data) src/graphics.c (plot_lines):
	Allow 2D plots "with lines lc rgb variable".  This capability already
	exists for points, dots, labels, impulses.
	Bug #1720032

2007-05-16  Timothee Lecomte  

	* src/plot.c (main): Properly reset Readline when we come back from
	the SIGINT handler calling longjmp. This avoids having the line
	edition all broken in that precise situation (arrow keys will work
	instead of giving '^[[A' for example)

2007-05-16  Daniel Sebald  

	* src/gplt_x11.c (image creation): Adjust image line pad according to
	image data width in XCreateImage().  Bug #1716389.

2007-05-15  Ethan Merritt  

	* src/gplt_x11.c (image creation): Add an error check for allocation of
	storage via XCreateImage().

2007-05-14  Ethan Merritt  

	* src/datafile.c (df_set_key_title): When a key title is loaded
	from a datafile columnheader, apply or don't apply enhanced text
	processing based on the setting of "set key {no}enhanced".
	Bug #1712560

	* demo/histograms.dem demo/histograms2.dem: This change affects the
	histogram demo, because some column headers contain an underscore.
	Add an explicit "set key noenhanced".

2007-05-14  Timothee Lecomte  

	* src/command.c (fgets_ipc): Fix fgets_ipc so that it behaves like
	fgets (always NUL-terminate the returned string).
	Bugs #1716556 and #1673352

2007-05-13  Petr Mikulik  

	* config/config.dj2 config/makefile.dj2: Updated Makefile for djgpp
	using a config.h file.

2007-05-10  Ethan Merritt  

	* src/util.c src/util.h src/variable.c src/variable.h
	src/command.c:  Move numeric_locale from variable.c to util.c.

	* src/fit.c (fit_command) src/plot2d.c (get_data)
	src/plot3d.c (get_3ddata) src/datafile.c (df_reset_after_error):
	Apply user-specified numeric locale just before any data is read in from
	a data file.  Reset it to "C" afterwards.
	Bugs #1692541 #1707916

2007-05-09  Ethan Merritt  

	* src/color.d (ifilled_quadrangle): Initialize line style before
	setting color.  Bug #1715480

	* src/misc.c (lp_use_properties): Pay attention to the point flag
	even if we fall through to a default line type. Bug #1715480

2007-05-07  Ethan Merritt  

	* configure.in: If the user specifies ./configure --with-plot but
	gives no explicit directory then try anyway because the necessary
	library may be in a standard place.  Bug #1654681

	Given how out of date the gnugraph/unixplot driver is, and the fact
	that gnuplot itself supports more output formats that the gnugraph
	format converter, it might be more reasonable just to drop this
	driver option altogether.

	* term/aquaterm.trm (AQUA_options): Allow terminal window ID to come
	from a variable.  Bug #1714070

2007-05-06  Ethan Merritt  

	* src/graphics.h src/graph3d.h: Rearrange the order of fields in the
	2D and 3D plot structures so that all fields they have in common are
	aligned in parallel. This facilitates consolidation of code that can
	apply to both 2D and 3D plots. It also points up several fields that
	were not in the 3D structure but should be (e.g. fillstyle).
	Impact: trivial increase in the size of the 3D plot structure.

	* term/gd.trm: Remove long-dead code and associated comment.

2007-05-05  Ethan Merritt  

	* term/gd.trm (PNG_image): Rearrange code slightly to facilitate later
	addition of alpha channel code.

2007-05-05  Timothee Lecomte  

	* src/wxterminal/wxt_gui.cpp (wxtThread::Entry):
	Fix the initialization of a sigset_t. The structure is not meant to be
	known, functions are provided instead. The previous code was
	completely wrong on non GNU systems.

2007-05-04  Daniel Sebald  

	* term/gd.trm (PNG_image): Fixed an image clipping bug in x dimension.

2007-05-04  Ethan Merritt  

	* src/graph3d.c (key_sample_point_pm3d):  The sample point in the key
	failed to note an explicit "lc rgb 'foo'" in the plot command, leading
	to a color mismatch between the plot and the key.  Bugfix.

2007-04-30  Timothee Lecomte  

	* src/wxterminal/wxt_gui.cpp:
	* src/wxterminal/wxt_gui.h:
	(wxt_put_tmptext, wxtFrame::OnSetStatusText):
	Change the text of the status bar asynchronously by sending a message to
	the GUI thread instead of doing it in a mutex. This particular GUI
	change from a separate thread was crashing on wxMac.
	(wxt_cleanup): Send an event to exit the main loop, destroying the
	windows is not enough.

	* src/wxterminal/gp_cairo.c (gp_cairo_initialize_plot):
	Initialize plot->rounded to satisfy valgrind.

2007-04-29  James R. Van Zandt  

	* man/gnuplot.1: Document environment variables and the
	initialization file.  Mention 3D plots and nonlinear least-squares
	fitting.

2007-04-29  Timothee Lecomte  

	* src/wxterminal/wxt_gui.cpp:
	* src/wxterminal/wxt_gui.h:
	(wxt_exec_event) Add a returned boolean, to simplify callers.
	(wxt_process_one_event) Factorize some code in this new function.
	(wxt_atexit) Rework the "persist" effect code, do not use threads
	anymore, no more stupid loop either; this prevents gnuplot from
	showing in `top` after exitting in "persist" mode, and prepares
	for further improvements (wxMac included).

2007-04-27  Ethan Merritt  

	* src/tabulate.c src/tabulate.h src/Makefile.am:  Consolidate the code
	supporting "set table " into a new source file.
	Add support for tabular output of style LABELPOINTS in 2D and 3D.
	Add support for tabular output of style VECTOR in 2D and 3D.

	* src/plot2d.c (print_table) src/plot3d.c (print_3dtable):
	Moved these routines into new file tabulate.c.

2006-04-27  Harald Harders  

	* src/tabulate.c:  For tabular output "set table ", give plot
	titles in a comment record.

2007-04-25  Ethan Merritt  

	* src/graph3d.c (do_3dplot): Correct Z coordinate of xyplane for log
	scale on Z.  Bug #1703370.

	* src/specfunc.c: Restore lost prototype for inverse_normal_func()

2007-04-25  James R. Van Zandt  

	* src/specfun.c (f_normal): call erfc instead of erf, to avoid
	underflow for -38 < arg < -8.

2007-04-24  Ethan Merritt  

	* term/x11.trm (X11_text):  term_reset() tries to close down all files
	and pipes cleanly. But if called on exit, the pipe to gnuplot_x11 may
	already be closed. Don't try to write to it.  Bug #1706945.

2007-04-19  Ethan Merritt  

	* docs/gnuplot.doc: Fix unterminated quote that causes emacs/makeinfo
	to fail.

2007-04-17  Ethan Merritt  

	* configure.in: Fix spelling of BACKWARDS_COMPATIBLE yet again.

2007-04-17  Ethan Merritt  

	* term/post.trm: Change the default to "blacktext" for the TeX-based
	terminal variants (pstex pslatex epslatex). This is more in line with
	the behaviour in versions 4.0 and earlier.  In particular it means that
	the default settings do not require you to include the color.sty
	package.

2007-04-17  Andrej Lajovic  

	* src/save.c (save_set_all):  Save all key options even if
	key is not currently displayed.
	Bug #1695643

2007-04-17  Daniel Sebald  

	* src/graphics.c (plot_vectors):
	Fix access of uninitialized variable found by valgrind.

2007-04-14  James R. Van Zandt  

	* docs/gnuplot.doc: Clarify ruler documentation.

2007-04-09  Ethan Merritt  

	* term/x11.trm (X11_filled_polygon):
	Fix read beyond end of buffer found by valgrind.

	* src/datafile.c (df_tokenise):
	Fix uninitialized variable found by valgrind.

2007-04-08  Ethan Merritt  

	* src/graph3d.c (boundary3d do_3dplot): Do not reserve space on the
	canvas for a key if the key is disabled altogether.
	Bug #1695643

2007-04-07  Ethan Merritt  

	* src/command.c src/mouse.c src/scanner.c src/set.c src/show.c
	src.unset.c src/variable.c src/variable.h:  Instead of immediately
	applying the locale requested by "set decimal locale {foo}", save the
	requested locale string and apply it only during execution of gprintf().
	This prevents leakage of the numeric locale into terminal driver code
	(Bug #1692541), and simplifies the code used in save and show.

	* src/command.c (save_command test_palette_subcommand)
	src/save.c (save_set_all): Consolidate save of "set decimal locale"
	into save_set_all rather than the multiple calling routines.

2007-04-04  Ethan Merritt  

	* src/gplt_x11.c: The counter for X11_GR_BINARY_POLYGON segments must
	be static, so that the count continues after re-entry. Bug #1694162.

	* term/x11.trm (X11_filled_polygon): Use X11_GR_BINARY_POLYGON as
	tag for all segments of a binary filled polygon.  Continuation
	segments were not being marked as binary. It wasn't causing obvious
	problems, but...

2007-04-01  Ethan Merritt  

	* src/util.c (gprintf):  Accept the ' format specifier, which
	asks for digits to be grouped and separated according to the current
	locale.  We just pass it on to the C library for application.
	Bug #1692550

2007-03-31  Ethan Merritt  

	* term/wxt.trm (wxt_options) src/wxterminal/wxt_term.h 
	src/wxterminal/gp_cairo.c (gp_cairo_initialize_context)
	src/wxterminal/gp_cairo.h src/wxterminal/wxt_gui.cpp (wxt_graphics):
	Add explicit line cap and join properties for cairo output.
	Allows  "set term wxt {rounded|butt}"

2007-03-29  Juergen Wieferink  

	* src/eval.c src/gp_time.h src/internal.c (f_strftime f_strptime)
	src/internal.h demo/stringvar.dem docs/gnuplot.doc:
	Introduce two new functions 'strftime' and 'strptime', which do
	essentially the same as the standard C functions with the same names,
	but use seconds since 2000 instead of struct tm.
	(Patchset #1199186 July 2005). 

2007-03-29  Ethan Merritt  

	* demo/4D_data.dem demo/all.dem: Rename demo so that the filename is
	consistent with the demo scripts.

	* missing:  If makeinfo is not found, make the resulting error message
	non-fatal.  Bug #1682491

2007-03-28  Ethan Merritt  

	* docs/gnuplot.doc: Cross-reference 'set datafile fortran'.

	* plot2d.c (eval_plots) plot3d.c (eval_3dplots): Keep track of whether
	we are in the midst of defining a parametric equation, so that the commas
	separating parametric components do not trigger premature iteration of a
	for [] specification.

2007-03-25  Timothee Lecomte  

	* demo/histograms.dem: Add message to 'pause -1'.

	* src/wxterminal/gp_cairo.c
	(gp_cairo_draw_text, gp_cairo_draw_enhanced_text): Clear the path after
	drawing a text layout since pango does not do it by itself. This is a
	bug-fix for spurious 0-width lines that appear when a cairo-based
	terminal is used to generate pdf files, this bug does not appear in
	wxt.

	* src/wxterminal/gp_cairo.c: Fix and complete debugging messages.

2007-03-21  Daniel Sebald  

	* src/graphics.c (boundary): The change of 2007-02-25 overlooked the
	2D plots having palettes that also required setup_tics(COLOR_AXIS,).
	Bug #1684789

2007-03-16  Bastian Maerkisch  

	* src/win/winmain.c (appdata_directory): Prevent segfault if no
	directory is given and the environmental variable APPDATA is not set.

2007-03-14  Ethan Merritt  

	* src/graph3d.c (draw_3d_graphbox):  Fix bug that caused axis labels
	not to be drawn in 'set view map' mode.

2007-03-13  Timothee Lecomte  

	* demo/transparent.dem: Add messages to 'pause -1' commands to avoid
	guessing that gnuplot is taking a lot of time to plot while it is just
	waiting for user input.

2007-03-11  Timothee Lecomte  

	* configure.in:
	* INSTALL:
	Report mouse support in the features section, not as an option of the
	x11 terminal, since it is in fact true for other interactive terminals
	such as wxt or vgagl.

2007-03-08  Ethan Merritt  

	* src/datafile.c (df_readline df_generate_pseudodata df_open df_gets):
	Implement a function-plotting mode that allows 'using' options.
	'+' is a pseudo-file that in 2D plots returns a stream of 
	values corresponding to x coordinates within the current xrange,
	In 3D plots it returns a stream of x and y coordinates on the
	 grid.  In either case, additional columns of data can
	be attached the x and y coordinates via a 'using' specification, 
	just as for real data files.

	* demo/4D-data.dem demo/all.dem demo/approximate.dem demo/html/Makefile
	docs/gnuplot.doc:  Demos and documentation.

2007-03-07  Ethan Merritt  

	* term/gd.trm (PNG_init_brush): Cleaner fix for Bug #1673316.
	Consolidate duplicated code surrounding calls to PNG_init_brush() into
	a single copy in the subroutine itself.

2007-03-06  Ethan Merritt  

	* term/gd.trm (PNG_init_brush): Flag initial color as invalid. The first
	time the brush is used, it will be synced to the current palette color.
	Bug #1673316 

2007-03-04  Ethan Merritt  

	* src/graphics.c (plot_c_bars):  For candlesticks whose width is equal
	to a small even number of pixels, the central vertical bar is displaced
	to one side or the other. This patch forces the width to be an odd
	number of pixels so that the box is symmetric.  Also, honor the border
	linetype of the current fillstyle.

2007-03-03  Ethan Merritt  

	* docs/titlepag.tex: Update author list and copyright information.

	* NEWS: Update

	* demo/pm3d.dem: Add "test palette" to the demo series.

2007-02-28  Ethan Merritt  

	* term/gd.trm (PNG_image): libgd is sensitive to the order of the bounds
	used for clipping. Swap bounding box corners if necessary.
	Bugfix.

2007-02-27  Ethan Merritt  

	* src/graphics.c: The code to allow room for subscripts/superscripts
	when placing the x-axis label was masked by a spurious #ifdef.
	Bug #1669038

	* src/datafile.c: Avoid double-close of data_fp in pathological cases.

2007-02-26  Ethan Merritt  

	* docs/gnuplot.doc: Add mention of "set multiplot title ".

	* src/term_api.h term/aquaterm.c term/gd.trm term/pdf.trm:  Remove cruft
	(enhanced_max_height, enhanced_min_height) used only be PostScript but
	exported to everyone.
	
	* term/estimate.trm: Keep track of string height in local variables
	instead, and return the net height in term->ymax.  It was supposedly
	doing this already.  Now it really does.

2007-02-25  Petr Mikulik  

	* src/color.c (draw_color_smooth_box) src/plot3d.c (eval_3dplots):
	Call setup_tics(COLOR_AXIS, 20) at the same place as setup_tics(...)
	for all other axes. Until now it was called much later during color box
	drawing where it could change the colour axis min or max by rounding it
	to lower/upper tics step.

2007-02-23  Ethan Merritt  

	* src/datafile.h src/datafile.c (df_reset_after_error)
	src/util.c (int_error): The routines in datafile.c use local variables
	to track the context of expression evaluation; e.g. expressions may
	only reference data column values inside a `using` statement. But the
	state of these context variables is corrupted if an error exit bails
	directly to the command line, thus bypassing the normal execution path.
	Therefore we provide a routine df_reset_after_error() to be called
	from int_error(). FIXME: Similar error_reset routines may be needed
	by other modules.

	* src/eval.c docs/gnuplot.doc: Allow "strcol(foo)" as shorthand form
	of "stringcolumn(foo)".

	* src/unset.c (unset_style) src/set.c (set_nolinestyle):
	Add missing command "unset style line ".

2007-02-22  Mojca Miklavec  

	* term/latex.trm (LATEX_fillbox): Add support for solid-fill boxes.
	EAM: style parameter accepted, but density and fill patterns are limited
	to solid white or solid black.

2007-02-22  sobukus@users.sourceforge.net

	* m4/apha.m4: Fix syntax of test for gcc on alpha

2006-02-21  Shigeharu Takeno  

	* docs/gnuplot-ja.doc docs/term-ja.diff: Sync Japanese documentation.

2007-02-21  Ethan Merritt  

	* src/term_api.h: Define S_ENC_UTF8 for completeness (used by gd.trm if
	libgd.2.0.34 is found) even though no user command exists yet to set it.

	* term/metapost.trm: Set flag TERM_CAN_CLIP, so that the clipping 
	(or rather lack of clipping) is like other postscript variants.

2007-02-18  Ethan Merritt  

	* demo/image2.dem demo/image.dem demo/macros.dem demo/rainbow.dem
	demo/rectangle.dem:  Change version test to look for 4.3 rather than 4.1

2007-02-18  Petr Mikulik  

	* src/pm3d.c (pm3d_plot): Use the z-averaging also for flushed
	triangles.

2007-02-17  Petr Mikulik  

	* docs/gnuplot.doc: Updates in dgrid3d and contours sections.

2007-02-14  Ethan Merritt  

	* docs/gnuplot.doc docs/gnuplot.texi: Fix typos that cause TeX failure.

	* tutorial/header.tex: Add \usepackage{amssymb}

2007-02-13  Daniel Sebald  

	* src/graph3d.c (boundary3d): Move addition of title key title lines to
	number key_rows outside conditional test.

2007-02-13  Ethan Merritt  

	* src/graphics.c (boundary): Do not apply log scale range checks to
	colorbar and palette unless these really are used in the plot.
	Bug #1659059

	* docs/gnuplot.doc: Clarify the section on 'set log', and remove an
	empty entry point for 'set log cb'.

2007-02-11  Petr Mikulik  

	* src/command.c (pause_command): On Windows, cannot wait for Enter
	in "pause -1" in a non-interactive session without the graph window.

2006-02-10  Shigeharu Takeno  

	* docs/gnuplot-ja.doc docs/term-ja.diff: Sync Japanese documentation.

2007-02-10  Ethan Merritt  

	* term/cgm.trm (CGM_options): Remove C++-ism.

	* src/set.c (parse_label_options) : Make sure that there is
	a default point type, so that 'set label  point' does in fact
	draw an acceptable point.
	Bug #1652654

	* term/latex.trm: Re-assign point types to match postscript and
	other terminals. Additional symbols are taken from the amssymb package.

2007-02-10  Petr Mikulik  

	* src/command.c (pause_command): On Windows, wait for Enter in console
	instead for a mouse click in a special window if the graph window is
	not (yet) present.

2007-02-10  Petr Mikulik  

	SF #1651350 win terminal: pause mouse key|any does not work

	* src/mouse.c (event_keypress): Kill pending Pause dialog.

	* src/win/wpause.c (PauseBox): Don't show "OK CANCEL" dialog when
	pausing for mouse.

2007-02-09  Daniel Sebald  

	* term/pdf.trm (PDF_point): Point type 1 was incorrectly drawn as a dot.
	Bug #1656433

2007-02-10  Juergen Wieferink  

	* src/plot.c (main): Flag 'interactive' not reset to FALSE after running
	command "gnuplot - nonExistingScript.gp". On some platforms, gnuplot
	cannot 'exit' and goes to an infinite loop after Ctrl-D.
	Bug #1612995 

2007-02-09  Ethan Merritt  

	* src/graph3d.c (do_3dplot draw_3d_graphbox):  Add special-case
	tests to insure that the plot border is drawn either in back or
	in front of the grid when splot_map is set.
	Bug #1655001

	* term/README:  Confusing typo in TERM_TABLE layout.

2007-02-09  Petr Mikulik  
	* docs/gnuplot.doc: Add a dummy label for "3 data style" to avoid
	bug in doc2gih (try "help contour").

2007-02-08  Petr Mikulik  

	* src/plot3d.c (eval_3dplots): Improved message for non-grid data.

2007-02-08  Ethan Merritt  

	* term/gd.trm (PNG_vector): Grid lines (linetype 0) were always
	treated as alternating black/white/black/white.  Change this to
	alternating current_color/transparent/current_color/transparent.
	Bug #1655001

2007-02-07  Ethan Merritt  

	* src/command.c (test_palette_subcommand): Do not use deprecated
	syntax in internally-generated commands.
	Bug #1654570

	Update a contributed patch from May 2002   SourceForge #551439 

	* src/datafile.c (df_open plot_option_index df_readascii)
	docs/gnuplot.doc:  Allow data blocks in input file to be indexed
	by name in addition to indexing by ordinal numbers.
	   plot 'file' ... index '' ...
	The data block is found by searching for  in an
	introductory comment record.

2007-02-06  Ethan Merritt  

	* src/misc.c src/graphics.c: Update comments to match code handling
	colorspec with "rgb variable".

	* src/save.c (save_pm3dcolor): Save/show "rgb variable" when needed.

	* src/gadgets.h src/tables.c src/tables.h src/save.c (save_set_all) 
	src/graphics.c (do_plot do_key_sample) src/show.c (show_keytitle)
	src/set.c (set_key) : Add a textcolor field to legend_key structure.
	The requested color is applied to the key title and to the plot titles
	in the key.  Setting the color to "rgb variable" causes plot titles to
	match the linetype color of the corresponding plot (as in version 3.7).

	* demo/colorscheme.dem : New demo

	* docs/gnuplot.doc: Update section on "set key".

2007-02-05  Per Persson  

	* configure.in: Testing libreadline for remove_history presence 
	instead of readline to avoid incompatible libedit wrapper.
	
2007-02-05  Ethan Merritt  

	* src/graphics.c (finish_filled_curve):
	Fill between curves is created by a sequence of quadrangles.
	Unfortunately there is a 1-pixel overlap of adjacent quadrangles.
	This causes a regular artifact (vertical stripes) if the fill style is
	transparent solid. This patch tests for the special case and reduces
	the width of each quadrangle by one pixel so that there is no overlap.

2007-02-04  Ethan Merritt  

	* src/util3d.c (draw3d_line_unconditional):  Clip line segment.
	Fixes, or at least ameliorates, a problem with (unsigned int) terminal
	coordinates going negative for terminals using the code in bitmap.c
	Some day I hope we can replace all terminal coordinates with signed values
	Clipping/interpolation with unsigned coords doesn't work, and causes
	problems all over the place.
	Bug #1649887

2007-02-02  Timothee Lecomte  

	* configure.in (PKG_CHECK_MODULES):
	* m4/pkg.m4:
	Cleanup configure.in by defining PKG_CHECK_MODULES_NOFAIL in pkg.m4
	instead of copying the default help messages by ourself.

2007-02-02  Timothee Lecomte  

	* configure.in:
	* src/Makefile.am:
	Use autotools' name transformation mechanism to define GNUPLOT_X11 as
	the installed name for the gnuplot_x11 program. Fix the use of
	--program-prefix and friends at configure time. Bug #997481.

2007-01-31  Ethan Merritt  

	* term/gd.trm (ENHGD_FLUSH):  libgd 2.0.34 will allow explicit request
	for Adobe Symbol font encoding.  Make use of this to handle transient
	use of Symbol font in enhanced text.  Does not affect older gd versions.

2007-01-29  Ethan Merritt  

	* src/axis.c (get_position_default): Because the same parsing routines
	are used for both 2D and 3D positions, the trailing comma after a 2D
	position can be ambiguous.  For example:
	  plot "foo" with labels offset 1,1, "bar" with points
	currently produces an error when the parsing routine tries to interpret
	"bar" as a z component of the offset.  This patch fixes the common case
	shown above, although more pathological cases are still possible.
	E.g.  plot foo w labels offset 1,1,   4 with lines

2007-01-28  Ethan Merritt  

	* src/plot2d.c (store_label): Only store color value for each label
	in a "with labels" plot if "rgb variable" has been requested.
	Bugfix.

2007-01-27  Ethan Merritt  

	* src/color.h src/graphics.c (plot_image_or_update_axes)
	term/pdf.trm (PDF_filled_polygon) src/color.c (filled_quadrangle
	filled_polygon_3dcoods filled_polygon_3dcoords_zfixed):
	Change gpiPoints to contain signed x,y values. This is what the
	explanatory comment always implied ("same as in gd.h"), but it 
	wasn't true.  The change fixes several image and polygon clipping
	problems, including segfaults in the pdf driver. Also fixes filled
	curve accounting errors on 64-bit machines.
	Bug #1612502

2007-01-27  James R. Van Zandt  

	* docs/gnuplot.doc: Rearranged the introduction, so it discusses
	command-line arguments before gnuplot commands, and command files
	before interactive mode. 

2007-01-26  Ethan Merritt  

	* docs/gnuplot.doc term/gd.trm: Mention that in order to use transparent
	fill in png images, you must "set term png truecolor".

2007-01-26  Petr Mikulik  

	* term/post.trm: Typo in docs.

2007-01-23  Ethan Merritt  

	* configure.in: The libreadline checks got mangled. Bad patch?
	This fixes the breakage, and adds a warning if gd.h is not found.

2007-01-22  Ethan Merritt  

	* term/gd.trm (PNG_image) term/pdf.trm (PDF_image) term/post.trm
	(PS_image) src/wxterminal/gp_cairo.c (gp_cairo_draw_image):  Implement
	clipping in accordance with the bounding box passed to term->image()
	via corner[2] and corner[3]. Up until now, only x11 implemented this
	aspect of image rendering.   Not yet implemented: aquaterm pm win
	Bug #1612502

2007-01-22  Petr Mikulik  

	* configure.in: Let the GNU readline be the default instead of the
	built-in readline. Improved messages for --with-readline.

2007-01-21  Ethan Merritt  

	* src/plot2d.c (get_data) src/graphics.c (plot_impulses): Store and use
	optional color info from 3rd column of input for style "impulses".
	Example:
	    plot "foo" using 1:2:(rgb($3)) with impulses lc rgb variable

	* src/plot2d.c (get_data) src/graphics.c (plot_impulses): Store and use
	optional color info from 3rd column of input for style "dots".

	* src/graphics.c (plot_image_or_update_axes): Don't try to optimize rare
	case of rectangular image presentation in 3D except in splot_map mode.
	Bug #1612502

2007-01-20  Ethan Merritt  

	* src/graph3d.c (boundary3d): Fix auto-placement of the key if the user
	has forced absolute placement of the plot's right margin.

2007-01-20  Petr Mikulik  

	* plot3d.c (plot3drequest): Deactive splot_map when reading [y1:y2]
	argument of splot. Fixes axis reversal of set view map;splot [] [y1:y2].

2007-01-19  Petr Mikulik  

	* demo/pm3d.dem: Better title for plots with scans forward and
	backward.

2007-01-17  Ethan Merritt  

	* src/README: Update documentation of image code fallback to using
	term->filled_polygon() for each pixel if term->image() is not usable.

2007-01-16  Ethan Merritt  

	* src/graph3d.c src/graph3d.h src/graphics.c src/graphics.h 
	src/plot2d.c src/plot3d.c src/term_api.h:  Define a struct t_image to
	hold properties associated with any particular image.  We can put one
	of these in each 2D or 3D plot structure, just as we do for other
	specific plot types.  This reduces the number of parameters passed
	down to rendering routines; now they only need a pointer to the one
	structure, in which all other relevant information can be found.

	* docs/gnuplot.doc src/misc.c (get_image_options) src/misc.h: Add an
	image property "failsafe".  This causes the image to be rendered with
	generic rgb rectangles, bypassing any terminal-specific image code.
	This is useful for debugging problems in the customized terminal code,
	e.g.  Bug #1612502

2007-01-16  Ethan Merritt  

	* term/hp26.trm (BN_create): Use gp_alloc() rather than malloc/calloc.

	* term/hp26.trm term/compact.c term/Makfile.am.in
	term/makefile.amg term/makefile.dj2 term/makefile.unx:
	Remove helper file compact.c from the distribution.  It contains a
	broken file compaction routine that results in segfaults, memory leaks,
	and buffer overflows.  The only caller is hp26.trm, and testing
	indicates that even when the compaction works it only saves about 5%.

	Bug #1540389

2007-01-13  Ethan Merritt  

	* term/cgm.trm (CGM_options) term/gd.trm (PNG_options) 
	term/metapost.trm (MP_options) term/tgif.trm (TGIF_options):
	The "set termoption font " command was intended to allow changing
	only font size, leaving the current font face intact, using the form
		set term  font ","
	Some terminals were not handling this correctly.

	* src/gplt_x11.c (pr_encoding) term/x11.trm share/Gnuplot.app-defaults:
	Gnuplot_x11 has been using a default encoding *-* for x11 fonts. There
	is a bug in xorg-7.1 that causes this to fail. So we now provide an
	optional X-resource that can be used to set the default encoding to
	something else.  E.g.:	gnuplot*encoding: iso8859-15

2007-01-11  Daniel Sebald  

	* docs/gnuplot.texi docs/gnuplot.doc (line 3521):   Add trailing
	whitespace at end of line "^6 origin".  For unknown reasons this works
	around a problem with makeinfo. FIXME.

2007-01-10  Daniel Sebald  

	* term/pdf.trm (PDF_SetFont):  Catch error from font request, and fall
	back to guaranteed font "Times-Roman".  Makes font errors non-fatal.

2007-01-10  Ethan Merritt  

	* src/gplt_x11.c (PaletteSetColor): Update current color in 
	plot->current_rgb when setting color from a Palette. Bugfix.

2007-01-09  Daniel Sebald  

	* demo/borders.dem: Add a "pause -1" at the end

2007-01-07  Mike Sutton  

	* docs/gnuplot.doc: Update descriptions of  as used in
	`set title` and `set label`.

2007-01-07  Ethan Merritt  

	* term/gd.trm (PNG_init PNG_init_brush PNG_vector PNG_point):
	Instead of pre-initializing a fixed number of brushes (PNG_brush[]),
	make this an array of pointers and allocated/initialize brushes on
	demand. This allows us to increase the maximum line width with very
	little cost in pre-allocated space.  Up MAXLINEWIDTH from 12 to 100.
	Also increase optimization of brush coloring by making it conditional
	on an actual change in color since the last use.

2007-01-04  Ethan Merritt  

	* term/gd.trm: Add error return check everywhere gdImageCreate is
	called.  This was not a useful check in earlier versions of libgd, but
	apparently 2.0.34 will introduce serious sanity checking at the time of
	image creation.

2007-01-02  Ethan Merritt  

	* src/plot3d.c docs/gnuplot.doc: We do not support non-hidden3d
	surfaces in a plot that is otherwise hidden3d (lines, points, labels,
	etc are OK). So document this and do not allow this combination of plot
	options.

	Bug #1531432

	* set.c (set_command): Default to a less strict rejection of 
	deprecated syntax; allow "set no" instead of "unset ".

2006-12-28  Daniel Sebald  

	* src/datafile.c (isanumber_pn, isatuple, token2double):
	Removed these functions as they repeat behavior of and somewhat
	inconsistent with real_expression().
	(plot_option_array): Use : instead of , for separator between elements.
	(token2tuple): Use real_expression() to get numbers
	(plot_option_comma_separated): Changed "comma_separated" to
	"multivalued" everywhere.  Changed the separator to a : rather than a
	, since the , conflicted with , separating multiple plot commands.
	A colon is also more consistent with separator used in other commands
	like "using".  This simplifies the code.

	* demo/image2.dem: Replaced , with : in appropriate places.

	Bug #1590658

2006-12-27  Juergen Wieferink  

	* src/parse.c src/parse.h:  New int_expression() real_expression()
	* src/axis.h src/command.c src/datafile.c src/hidden3d.c src/misc.c
	src/plot2d.c src/plot3d.c src/set.c src/show.c src/term.c src/unset.c
	term/aquaterm.trm term/dumb.trm term/emf.trm term/fig.trm term/gd.trm
	term/pdf.trm term/post.trm term/svg.trm term/win.trm term/wxt.trm
	term/x11.trm:
	Clean up code by replacing constructs such as
		struct value a;
		...
		i = (int)(real(const_express(&a)));
	with
		i = int_expression();

2006-12-27  Daniel Sebald  

	* src/gplt_x11.c (display): Changed "if (!plot->pixmap)"
	to "if (plot->pixmap == None)".
	(UpdateWindow): Made similar change to above.  Also defined out what
	I believe is cruft and listed a date.  If it doesn't fail, someday
	someone	will notice the message and decide to remove.

2006-12-23  Ethan Merritt  

	* src/graph3d.c (draw_3d_graphbox): Honor 2D setting for bmargin
	in 3D plots with "set view map".

2006-12-16  Ethan Merritt  

	* src/datafile.c (df_tokenise df_parse_string): Allow for quoted
	strings in comma-separated value files.
	Bug #1614424

	* src/graph3d.c (draw_3d_graphbox): Honor 2D front/back settings
	for axis, grid, and border elements in 3D plots with "set view map".

2006-12-15  Ethan Merritt  

	* configure.in: Fix AC_DEFINE definition of BACKSWARDS_COMPATIBLE

	* demo/transparent_solids.dem: Replace deprecated syntax.

2006-12-11  Ethan Merritt  

	* src/set.c (set_tic_prop) src/save.c (save_tics): NO_TICS is a bitmask
	value, not an integer constant. All tests for NO_TICS must be masked
	through TICS_MASK.
	Bug #1611764

2006-12-10  Daniel Sebald  

	* src/README src/graphics.c (plot_image_or_update_axes): 
	Augmented sign tests for determining image pixel orientation with the
	terminal scales in the x and y dimensions.
	Bug #1589589

2006-12-10  Ethan Merritt  

	* docs/gnuplot.doc: Add section on backwards compatibility and
	deprecated syntax.  Remove some trailing whitespace.

2006-12-09  Ethan Merritt  

	* demo/all.dem demo/html/index.save demo/html/Makefile demo/image2.dem
	demo/image.dem: Split image demo into two pieces.

	* demo/image.dem demo/image2.dem docs/gnuplot.doc: Add emf to the list
	of drivers supporting image plot styles.

	* demo/borders.dem: Replace deprecated syntax `defined(bb)` with
	`exists("bb")`.

	* configure.in: Make backwards compatibility with deprecated syntax and
	terminal options an explicit configuration choice. Defaults to 
	--disable-backwards-compatibility
	This should give us plenty of time to find any bugs exposed by 
	dropping the deprecated code.

	* term/gd.trm (PNG_graphics): Ignore the current values of "set size"
	when creating an output image.  Image size is controlled only by 
	"set term {png|jpeg|gif} size XX,YY". 
	
	This change brings all terminal types except PostScript into conformity
	with the distinct meanings of "set size" and "set term ... size".
	"set size" scales the plot; "set term ... size"  changes the size of the
	canvas on which the plot is drawn.

	* docs/gnuplot.doc: Document the intended distinction between 
	'set size' and 'set term  size'

2006-12-08  Johannes Zellner  

	* docs/gnuplot.doc: added emf to the list of file formats which can do
	pm3d.

2006-12-07  Timothee Lecomte  

	* configure.in: Fix use of --without-kpsexpand

2006-12-07  Johannes Zellner  

	* term/emf.trm: implemented pm3d and point types according to the
	suggestion in term/README.

2006-12-07  Ethan Merritt  

	* src/plot3d.c (get_3ddata): If the first data file is non-empty but
	has no usable data, then auto-scaling fails. Instead of a fatal error,
	just print a warning and try to read subsequent data files.
	Bug #1610430

2006-12-04  Ethan Merritt  

	* term/gd.trm (PNG_graphics PNG_FillPattern) demo/html/Makefile:
	Reconcile use of truecolor and transparency options. 
	Fill patterns apparently must not be defined as truecolor subimages.
	"set term png truecolor transparent" should produce a transparent
	background.  
	Bug #1608488

2006-12-02  Ethan Merritt  

	* demo/all.dem: Refer to transparent_solids.dem by its proper name.
	* demo/rgb_variables.dem: Minor update to first 2 plots.

2006-11-30  Ethan Merritt  

	* src/graph3d.c (plot3d_impulses): Color values read from a file were
	not being applied to impulse plots. Replicate the color assignment code
	being used by plot3d_points.

2006-11-29  Ethan Merritt  

	* term/svg.trm src/term.c (enhanced_recursion): Re-think what is 
	needed to pass an escaped Unicode character to svg. In normal text
	mode treat the sequence &#x... as a special case and pass it through
	as is.  In enhanced text mode & is already a special character, so in
	this case we need to temporarily replace it with an octal value that
	cannot be mistaken for something else, #xFE.

2006-11-28  Shigeharu Takeno  

	* docs/gnuplot-ja.doc docs/faq-ja.tex: Sync Japanese documentation,
	SF Patch [1519215].

2006-11-28  Ethan Merritt  

	* demo/layout.dem: Add a 4th demo plot illustrating the creation of
	stacked plots.

	* src/graphics.c (do_key_sample): If a box plot sample has zero width,
	do not draw a sample at all. This avoids drawing a visible border around
	a zero-width box.

2006-11-28  Timothee Lecomte  

	* configure.in: Fix bug in --{en|dis}able-wxwidgets

	* src/wxterminal/wxt_gui.cpp:
	* src/wxterminal/wxt_gui.h:
	Allow building with wxMac, in addition to wxMSW and wxGTK.

2006-11-26  James R. Van Zandt  

	* docs/gnuplot.doc: For filledcurves, the default variant depends
	on the number of columns in the input data.

2006-11-26  James R. Van Zandt  

	* term/README: tweak wording of _image documentation.

2006-11-25  Mike Sutton  

	* term/gd.trm (PNG_init PNG_vector PNG_point): Fix off-by-one error
	in specifying brush definitions that control line width.

2006-11-22  Ethan Merritt  

	* term/pdf.trm (PDF_graphics):  The multiplier from 'set size' was being
	applied twice, so the resulting plot scaled as the square of the size.
	Apply it only once, to the plot, not to the canvas.

	* term/pbm.trm (PBM_graphics PBM_options): Decouple 'set size' from
	'set term pbm size XX,YY'. The latter will always yield an XX,YY image.
	Keep (pre-4.2) behaviour if no explicit terminal size is given.

2006-11-21  Ethan Merritt  

	I ran the complete set of demos through the svg terminal, and judged the
	result using ksvg via konqueror. This revealed several problems, which
	are fixed by this set of patches. Other svg viewers (mozilla, inkscape,
	OpenOffice) worked less well.

	* term/svg.trm (SVG_PathLimit SVG_MoveForced):  Avoid ridiculously
	long paths by limiting total path length to 512.
	Allows konqueror to handle the last plot of vector.dem.

	* term/svg.trm:  Avoid opening/closing new paths unnecessarily.
	This prevents creating a new group for every filled_polygon, and
	drastically reduces the size of output files containing pm3d objects
	or pixel images.

	*term/svg.trm:  Clipping in the core code is still not perfect.
	Handle y coordinate overflow gracefully.

2006-11-19  Ethan Merritt  

	* term/fig.trm (FIG_set_color): The case of TC_LT was handled
	incorrectly.
	Bug #1599346

	* src/misc.c (lp_use_properties) Remove annoying warning message.

2006-11-18  James R. Van Zandt  

	* tutorial/eg2.plt: Use \sin in title.

	* tutorial/eg4.plt: delimit one label with double quotes, for
	illustration.

	* tutorial/eg7.plt: Add labels giving the equations for the tori,
	using manual spacing for one and a \parbox for the other.
	
	* tutorial/tutorial.tex: Re-align the "verbatim" code with what's
	actually used (especially: single quotes vs. double quotes).
	Point out that backslashes need escaping in double quotes, and
	that strings can be continued.  Show two ways to handle vertical
	spacing of labels in the epslatex terminal.
	
2006-11-18  Ethan Merritt  

	* term/fig.trm (FIG_filled_polygon) term/tgif.trm (TGIF_filled_polygon)
	term/pstricks.trm (PSTRICKS_filled_polygon):  These terminals were
	issuing a spurious warning message if term->filled_polygon() was called
	without a color palette having been initialized. It is perfectly fine
	to fill a polygon with other types of colorspec.

	* demo/margins.dem demo/html/webify.pl demo/html/index.save:  Update
	to current version, and make webify less sensitive to extra whitespace.

2006-11-17  Ethan Merritt  

	* src/graphics.c (plot_image_or_update_axes): Split test for terminal
	capabilities into two parts, palette and rgb. This allows the emf and
	other terminal drivers to handle rgbimage even if they provide no
	palette support.

	* term/cgm.trm (CGM_set_color): Fix stupid typo in array bounds check.

	* NEWS: update

2006-11-16  Ethan Merritt  

	* src/plot2d.c (eval_plots) docs/gnuplot.doc: The documented syntax
	is 'newhistogram {""} {}' but in fact the code was
	giving an error return if no title was present.  Fixed.

2006-11-15  Ethan Merritt  
	    Daniel Sebald  

	* src/gp_types.h: Define overlaid fields in struct coordinate to hold
	RGB components of IMAGE and RGBIMAGE plot styles.

	* src/graphics.c (plot_image_or_update_axes) src/plot3d.c (get_3ddata)
	src/plot2d.c (get_data):  Store RGB data into newly defined fields. 
	This enables 'splot ... with rgbimage'.

	* src/graphics. (plot_image_or_update_axes) docs/gnuplot.doc:
	Remove restriction that rgb images could only be rendered as a 2D
	rectangle facing the viewer. The general filled-polygon mechanism can
	now be used for 3D rgbimages in arbitrary orientations.

	* demo/image.dem:  Modify last plot to show rgbimage in 3D.

2006-11-14  Ethan Merritt  

	* hidden3d.c (build_networks): Add checks in the hidden3d code to
	cleanly skip empty plots.  This fixes a segfault demonstrated by
	running image.dem when the binary3 input file is missing. 

	* graphics.c (place_rectangles): Change the order of testing for
	2D and 3D cases; needed because 'set view map' was affecting 2D plots.
	Bug #1596313

2006-11-12  Ethan Merritt  

	* src/save.c (save_set_all): The gpsavediff script strips out lines
	from a gnuplot save file if the options they describe have not changed
	from the default. We can help this simplification by writing
	infrequently used suboptions on a separate line. Also change saved
	command to match documented command syntax 'set key nobox'.

	* src/set.c (set_tics) src/show.c (show_tics) src/save.c (save_set_all)
	docs/gnuplot.doc:  Allow tics to be set front/back without turning on
	the whole grid.    Syntax:   set tics {front|back}

2006-11-12  Ethan Merritt  

	Transparent fill styles (SourceForge patchset #1583199

	* src/term_api.h: Define new fill styles FS_TRANSPARENT_SOLID and
	FS_TRANSPARENT_PATTERN.  No new terminal entry points are added.
	However, routines that handle fill styles must be prepared to do
	something reasonable, perhaps ignore, the new transparent styles.

	* src/graphics.c src/term_api.h src/term.c: Move routine style_from_fill
	from graqphics.c to term.c and export it for general use.

	* src/color.c src/misc.c (parse_fillstyle) src/plot2d.c (eval_plots)
	src/save.c (save_fillstyle) src/show.c (show_fillstyle) 

	* term/aquaterm.trm term/cgm.trm term/fig.trm term/metapost.trm
	term/post.trm term/svg.trm src/os2/gclient.c src/win/wgraph.c: 
	Insert place-holders for transparent fill styles.

	* term/gd.trm term/pdf.trm src/gplt_x11.c src/wxterminal/gp_cairo.c:
	Implement transparent fill styles, with varying degrees of completeness.

	* demo/all.dem demo/transparent.dem demo/transparent_solids.dem
	demo/html/index.save demo/html/Makefile:  New demos for transparency.

	* docs/gnuplot.doc: Document transparency options for 'set style fill'. 

2006-11-10  Timothee Lecomte  

	* src/win/wpause.c:
	* src/win/wtext.c:
	* src/wxterminal/wxt_gui.cpp:
	* src/wxterminal/wxt_gui.h:
	* src/wxterminal/wxt_plot.h:
	Rework and simplify the event handling from the wxt terminal on
	Windows. Remove hooks from the wxt terminal in the Windows files.

	* src/plot.c (main):
	* src/plot.h:
	Introduce a boolean to track the use of "-persist" on the command line.
	Remove WXWIDGETS-specific code. Call term_reset() using GP_ATEXIT().

	* src/wxterminal/Makefile.am:
	* src/wxterminal/wxt_plot.h:
	Remove the file wxt_plot.h, now unused.

	* src/wxterminal/wxt_gui.cpp (wxt_init, wxt_atexit):
	* src/wxterminal/wxt_gui.h:
	Use GP_ATEXIT() to register wxt_atexit().
	Rework "persist" behaviour on Windows.

	* configure.in:
	* wxt_gui.cpp (wxt_atexit):
	* wxt_gui.h:
	Use fork() to make the "persist" behaviour satisfying on UNIX.

2006-11-07  Timothee Lecomte  

	* src/wxterminal/wxt_gui.cpp (wxtPanel::DrawToDC): Draw the zoom
	coordinates with the same font as the plot.

2006-11-05  Ethan Merritt  

	* src/term.c (init_term): Normally we initialize the default terminal
	immediately on program entry. However, if the default is x11 then defer
	initialization until an actual plot command.  This mitigates problems
	if gnuplot_x11 cannot be started normally, and allows the user to select
	a different driver in the case that x11 is the default but is broken.
	Bug #1530601

2006-11-04  Ethan Merritt  

	* src/graphics.c (boundary): Restore a few lines of code removed in
	the 21-Oct-2006 patch that added absolute placement of margins. This
	restores the placement of the right plot boundary in some corner
	cases involving color plots with no colorbox. However, I believe that
	this "fix" is only needed only to counteract errors in the colorbox
	code itself.
	Bug #1590363

	* term/x11.trm (parse_driver): If this routine fails on first entry, we
	must not call int_error() because the longjump has not been set up yet.
	I.e. "setenv GNUPLOT_DRIVER_DIR illegal; setenv GNUTERM x11; gnuplot"
	would segfault on entry. Just print a warning and hope the user notices.

2006-11-03  Ethan Merritt  

	* src/datafile.c (df_readbinary): Fix error in logic of 2D and 3D
	rotation matrix initialization.

2006-11-03  Petr Mikulik  

	* VERSION PATCHLEVEL src/version.c: Declare this version as 4.3 pl 0.

2006-11-01  Ethan Merritt  

	* docs/gnuplot.doc: Add an entry key for "help file", because otherwise
	this takes you to a section on avs binary format (confusing).

2006-10-29  Ethan Merritt  

	* src/gadgets.h src/tables.h src/tables.c: Add font to key structure.

	* src/set.c (set_key set_keytitle) src/save.c src/show.c
	src/graphics.c (do_plot do_key_sample) docs/gnuplot.doc:
	    set key {font ","}

	Add explicit font to be used for key title and key entries.  If you use
	a font that is very different from the default, you may have to adjust
	the line spacing of the key entries.  For example:
	    set key font "Times,18" spacing 1.5

2006-10-28  Ethan Merritt  

	* src/show.c (show_ticdef) src/save.c (save_tics): Handle textcolor of
	tic labels correctly for cases other than a pure linetype (TC_LT).
	Bug #1586427

2006-10-26  Hans-Bernhard Broeker  

	* src/graphics.c (place_rectangles): Fix missing brace in
	yesterday's change.

2006-10-25  Ethan Merritt  

	* src/graphics.c (place_rectangles do_plot) src/graph3d.c (do_3dplot)
	src/graphics.h: Allow placement of rectangles in 3D (splot) regardless
	of view angle, but only if the rectangle position is given in screen
	coords. Placement in 2D and 3D "set view map" is unchanged.

2006-10-22  Hans-Bernhard Broeker  

	* src/graphics.c (plot_image_or_update_axes): Operator | is
	forbidden on real C99 booleans.  Use || instead.

	* src/datafile.c (df_readbinary): Operator | is forbidden on real
	C99 booleans.  Use || instead.

	* src/axis.c (setup_tics): Operator & is forbidden on real C99
	booleans.  Use && instead.

	* config/makefile.oww (WCFLAGS): Add -za99 to enable _Bool type in
	recent versions of OpenWatcom.
	(default): Mark .SYMBOLIC for wmake.
	(texticon.ico): Avoid endless rebuild by copying the generation
	command.

2006-10-21  Ethan Merritt  

	* src/gadgets.c src/gadgets.h src/graph3d.c src/graphics.c src/save.c
	src/set.c src/show.c src/unset.c src/util3d.c:  Add option to specify
	plot margins as an absolute position on the canvas (screen).
		set {lrbt}margin screen 
	
	* docs/gnuplot.doc demo/all.dem demo/html/index.save demo/margins.dem
	demo/html/Makefile: Add demo illustrating use of absolute margins to
	perfectly align 2D and 3D component plots within a multiplot.

2006-10-21  Timothee Lecomte  

	* configure.in: Rework the summary displayed at the end of the
	'configure' script, so that it is more complete, useful, consistent and
	still readable.

2006-10-20  Ethan Merritt  

	* src/graph3d.h src/parse.c src/parse.h src/plot2d.c src/plot3d.c:
	Implement a mechanism for iteration within a plot or splot command.
	    {s}plot for [=:{:}] ...rest of plot clause...

	* docs/gnuplot.doc demo/iterate.dem demo/histograms.dem demo/all.dem: 
	Illustrate use of iteration in plot commands.

2006-10-20  Ethan Merritt  

	* src/datafile.c (df_open) docs/gnuplot.doc:
	Current syntax for using specs allows
	    plot foo using 1:2 title column
	    plot foo using 1:2 title 2
	but not
	    plot foo using 1:(column(N)) title N
	Fix this by allowing 'title column(N)' in a `using` clause. Note that
	this does not affect the general case 'title "foo"' found outside of a 
	`using` clause.

2006-10-20  Bernhard Simon

	* src/color.c (make_palette): Add missing stderr parameter in 
	FPRINTF debugging statements.

2006-10-19  Ethan Merritt  

	* src/datafile.c (df_readline): If the datafile we are supposedly
	reading from was never opened, simply return DF_EOF. This relieves the
	caller from having to check this separately before calling df_readline.

	* src/datafile.c (df_open); If the datafile cannot be opened, set
	df_eof and return DF_EOF. FIXME: Having both methods is stupid; we
	should just get rid of df_eof and use the return value.

	* src/graph3d.c (do_3dplot draw_3d_graphbox) src/graphics.c (do_plot): 
	* src/plot3d.c (eval_3dplots): 
	Do a better job of skipping over plots marked NODATA.  In particular do
	not try to scan their data for scaling or plot limits, and do not place
	an entry in the key box.

	Bug #1579867

2006-10-17  Ethan Merritt  

	* term/svg.trm: Back off to simpler treatment of non-ascii characters.
	"set term svg raw" - pass them through unaltered
	"set term svg escaped" - replace byte-by-byte with &#xNN;

	* configure.in: Print a warning if snprintf() is not found during auto-
	configuration. Recommend that the user provide snprintf() via an
	external version.

2006-10-15  Ethan Merritt  

	* term/gd.trm: Switch to Unicode-compatible representation of octal
	characters given as \xxx in a single-quoted test string.
	Bug #1534649

	* term/svg.trm: Only re-code utf-8 into Unicode if current encoding
	is default or iso_8859_1.

2006-10-14  Ethan Merritt  

	* term/svg.trm: Implement full (?) UTF-8 support via escaped unicode
	codepoints.  E.g. rather than relying on the SVG viewer to interpret
	UTF-8 byte sequences, convert them to the form  ꪪ where AAAA
	is the hex representation of the unicode character.

	* term/svg.trm (SVG_options): Do not reset terminal options to default
	values if invoked from `set termoption` rather than `set terminal`.
	Bug #1534649

2006-10-13  Ethan Merritt  

	* term/gplt_x11.c: Place #ifdef HAVE_STRDUP protection around a code
	section that uses it to send signals to the KDE konsole.
	Older systems may not provide strdup(), but they also don't run KDE.
	Even if they did, the code in question is hardly a required feature.
	Fixes compile problem on Ultrix.

	* demo/rgb_variable.dem: Some platforms do not allow you to read a
	hexadecimal constant via strtod(). This prevents reading RGB colors as
	hexadecimal constants. Add a test for this, and print a warning.
	Bug #1574814.

2006-10-12  Ethan A Merritt  

	* src/graphics.c src/plot2d.c: Allow 2D plots to read color info from
	input column. Implemented for points and labels. SF Patch #1573026
	  plot ... with points linecolor rgb variable
	  plot ... with labels textcolor rgb variable
	
	* demo/rgb_variable.dem: Add 2D example plots.

2006-10-12  Daniel Sebald  

	* docs/gnuplot.doc: Small corrections.

	* term/post.trm (PS_encode_image): Added gamma correction for images
	using a PostScript transfer function. SF Patch [1575425].

2006-10-11  Ethan A Merritt  

	* term/svg.trm (SVG_put_text): Re-work this routine. Fix error
	in the escape codes generated for octal constants. Fix control flow
	for non-enhanced text strings.
	Bug #1575007

2006-10-11  Petr Mikulik  

	* src/command.c (test_palette_subcommand): Fixed order of set tics
	commands.

2006-10-10  Ethan A Merritt  

	* m4/alpha.m4:  Have the new macro use __alpha as the basis for the
	test.  Checked on Digital Unix 4.0D and Tru64 V5.1

	* term/svg.trm (SVG_put_text): Fix bracket scope error introduced
	on 3 Oct.

2006-10-10  Hans-Bernhard Broeker  

	* m4/alpha.m4: New macro GP_ALPHA.  Try to auto-detect if compiler
	targets DEC Alpha/AXP CPU.  If so, add -mieee or -ieee flag to
	CFLAGS to avoid FPU weirdness.

	* configure.in (GP_ALPHA): Call new macro.

2006-10-08  Ethan A Merritt  

	* src/gplt_x11.h src/gplt_x11.c term/x11.trm: Code cleanup.
	Assign separate protocol keys and disentangle the code supporting
	binary/ascii descriptions of color and polygons passed by the x11
	driver to gnuplot_x11.   Patchset #1549408

2006-10-08  Daniel Sebald  

	* src/term.c term/driver.h: Remove dead code and comments

2006-10-08  Hans-Bernhard Broeker  

	* docs/gnuplot.doc (set key): Fix gotcha in list of alignment 
	options in 'at ' case.

2006-10-05  Ethan A Merritt  

	* src/term.c (change_term): For backward compatibility, allow
	"set term X" as shorthand for "set term x11".

2006-10-04  Ethan A Merritt  

	* tutorial/eg7.plt: Make sure no local encoding is in effect, since
	the corresponding TeX package is probably not going to be loaded.

	* term/post.trm (PS_vector): Fix breakage introduced by Bugfix #1542050
	The path length must not be set to 0 without issuing a stroke command,
	otherwise the current path may never be flushed at all.

2006-10-03  Daniel Sebald  

	* demo/borders.dem: Place all 16 plots on one multiplot.

	* demo/all.dem: Put borders.dem inside all.dem.

2006-10-03  Petr Mikulik  

	* src/version.c: Changed date, version and patchlevel.

2006-10-03  Hans-Bernhard Broeker  

	* src/graph3d.c (place_arrows3d): Clip arrows even in 3D.  Patch
	from Harald Harders (SF #1569232).
	
	* term/svg.trm: Change sprintf() and fprintf() to strcpy and
	fputs, all over the place.
	(SVG_put_text): Fix handling of XML reserved characters in
	non-enhanced text output.

2006-10-02  Ethan A Merritt  

	* share/LaTeX/Makefile.am: If ./configure has determined that TeX is
	not installed on this machine, do not try to install gnuplot.cfg
	in the TeX directory tree.
	Bug #1569033

2006-10-02  Daniel Sebald  

	* docs/gnuplot.doc: Changed documentation for image to reflect fact
	that uniform sampling is assumed.  Fix other typos.

2006-10-01  Ethan A Merritt  

	* docs/gnuplot.texi docs/doc2texi.el docs/gnuplot.doc: 
	Update version number to 4.2  and update date to 2006

2006-10-01  Hans-Bernhard Broeker  

	* PATCHLEVEL: Changed to rc1 for first release candidate.

	* VERSION: Changed to version 4.2.