2015-01-01  Release 5.0

2015-01-01  Bastian Maerkisch  <bmaerkisch@web.de>

	* src/term.c:  Default to wxt terminal instead of the newly suported
	qt terminal on Windows.

	* win/gnuplot.iss:  Display RELEASE_NOTES instead of NEWS file.

2014-12-31  Ethan A Merritt  <merritt@u.washington.edu>

	* FAQ.pdf: Fix broken URLs.

2014-12-30  Ethan A Merritt  <merritt@u.washington.edu>

	* src/qtterminal/qt_term.cpp (qt_atexit): Sanity check.

	* src/command.c src/command.h src/mouse.c src/mousecmn.h src/plot.c
	src/term.c:  Backport core pieces of version 5.1 fix for Windows bugs
	#1432 and #1502.

	* src/win/wgnuplib.h src/win/wgraph.c src/win/winmain.c src/win/wpause.c:
	Backport win term pieces of version 5.1 fix for Windows bugs
	#1432 and #1502.

	* src/wxt/wxt_gui.cpp src/wxt/wxt_gui.h:
	Backport wxt term piece (referenced from wpause.c) of version 5.1 fix
	for Windows bugs #1432 and #1502

2014-12-28  Bastian Maerkisch  <bmaerkisch@web.de>

	* docs/titlepag.ms:  Update to version 5.

	* docs/gnuplot.doc:  groff tables for stats command. Several groff
	syntax fixes and minor layout tweaks.

	* config/mingw/Makefile:  New targets grops and gropdf.

	* config/config.os2 config/makefile.os2:  Update to version 5.

	* src/term_api.h src/os2/gclient.c:  Eliminate compiler warnings.

	* src/wxterminal/wxt_gui.cpp:
	Use cairo_show_page() rather than cairo_surface_show_page()

2014-12-26  Ethan A Merritt  <merritt@u.washington.edu>

	* src/command.c (do_line):
	Report error if a "load" file fails to close an open bracketed clause.
	Bug #1522
	
	* src/wxterminal/wxt_gui.*: remove old debug code.

	* FAQ.pdf: update for version 5 release

2014-12-26  Bastian Maerkisch  <bmaerkisch@web.de>

	* src/qtterminal/qt_term.cpp:  Remove dead code. Avoid implicit
	casts to unsigned int.

2014-12-24  Bastian Maerkisch  <bmaerkisch@web.de>

	* src/win/wgraph.c (drawgraph) src/win/wgdiplus (drawgraph_gdiplus):
	Failure to re-initialize the font name and size for enhanced text.
	Bug #1529 

2014-12-24  Shigeharu Takeno  <shige@iee.niit.ac.jp>

	* src/win/wgdiplus.cpp (SetFont_gdiplus):  Font names may be given in 
	current encoding. Patch #712

2014-12-23  Hans-Bernhard Broeker  <broeker@physik.rwth-aachen.de>

	* src/win/wgnuplot.mnu: Parameter input for atan2() was wrong. SF
	patch #1530 by Shigeharu Takeno.

	* src/win/wgnuplot-ja.mnu: Dito.

2014-12-21  Daniel J Sebald <daniel.sebald@ieee.org>

	* src/wxterminal/wxt_gui.cpp:  Track the most recent directory used
	by the export-to-file widget.

2014-12-19 Ethan A Merritt  <merritt@u.washington.edu>

	* src/wxterminal/wxt_gui.cpp (wxtPanel::wxt_cairo_create_bitmap):
	Another fix for the wxt terminal linked against wxWidgets 3.0.
	wxWidgets + wxgtk version 2.8 were fine with the sequence
	    delete cairo_bitmap;
	    cairo_bitmap = new wxBitmap(*image);
	but version 3.0 hits a use-after-free that can be attributed to a
	UI-triggered event invoking OnPaint(), which tries to access the old
	bitmap before the new one has been assigned.  Omitting the delete
	"cures" this, but then there is a memory leak.  Empirical tests seem
	to show that it suffices to defer the delete operation until after
	the assignment operation.  A proper interlock might be better yet.
 
2014-12-18 Ethan A Merritt  <merritt@u.washington.edu>
 
	* src/datafile.c (df_parse_string_field): If an input data file uses
	Mac OS-9 format with \r as a line terminator, the entire file is
	mis-recognized as one very long line.  If there are nevertheless
	recognizable field separators, the code to split out string fields into
	separate saved storage goes crazy, consuming huge amounts of memory.
	Detect and warn if an input string field exceeds MAX_LINE_LEN.
	Bug #1445 (also see Bug #1355)

2014-12-18  Hans-Bernhard Broeker  <broeker@physik.rwth-aachen.de>

	* term/win.trm (WIN_set_font): Revert incorrect change from
	strncpy() to safe_strncpy().

2014-12-17 Ethan A Merritt  <merritt@u.washington.edu>

	* src/datafile.c (df_generate_pseudodata): The sampling variable in a
	sampled plot is not necessarily x, so "set log x" should not affect it.
	E.g.    set log x; set angle degrees;
	        plot sample [a=1:360] '+' using (3+sin(a)):(cos(a)) with points
	Bug #1495

2014-12-16  Bastian Maerkisch  <bmaerkisch@web.de>

	* win/gnuplot.iss: Change working directory of shortcuts to
	current users's document folder. Works on Vista and upwards.  Bug
	#1415

2014-12-15  Bastian Maerkisch  <bmaerkisch@web.de>

	* demo/kdensity.dem:  End demo with pause / reset

	* config/mingw/Makefile:  Convert eol style of text files to CRLF
	during install.
	Bug #1520

2014-12-15 Ethan A Merritt  <merritt@u.washington.edu>

	* src/mouse.c (do_event) src/gplt_x11.c src/wxterminal/wxt_gui.cpp
	src/qtterminal/QtGnuplotWidget.cpp:
	Distinguish auto-generated replot events (e.g. replot-on-resize) from 
	user-generated replot events ('e' hotkey or toolbar replot widget).
	Use GE_replot for the former, GE_keypress('e') for the latter.
	Reject auto-generated replot requests while multiplot is active.
	(wxt was already doing this; now we extend it to qt and x11 also).
	Bug #1521

	* src/wxterminal/wxt_gui.cpp:  Do not change working directory in
	file export widget.

2014-12-14  Bastian Maerkisch  <bmaerkisch@web.de>

	* docs/windows/doc2html.c:  Rename variable "basename" to "name" to
	avoid a name conflict on some platforms.

2014-12-13 Ethan A Merritt  <merritt@u.washington.edu>

	* src/wxterminal/wxt_gui.cpp (wxtPanel::wxt_cairo_refresh):
	The wxt terminal has been failing when linked against wxgtk3.0.
	The overt symptom is a library assert statement sometimes followed by a
	segfault:
	  ./src/gtk/dcclient.cpp(2043): assert "m_window" failed in DoGetSize():
	  GetSize() doesn't work without window [in thread 7fb21f386700]
	  Call stack:
	  [00] wxOnAssert()
	  [01] wxClientDCImpl::DoGetSize(int*, int*) const
	  [02] wxBufferedDC::UnMask()
	Both the assert and the segfault are due to the plot window not yet
	having been rendered on the screen. The documented wxwidgets function
	panel->IsShownOnScreen() fails to reliably detect this condition, so we
	must use our own window id bookkeeping to skip any refresh commands
	before the window appears.

	Gnuplot Bug #1401
	Debian Bug http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=750045
	wxWidgets Bug  http://trac.wxwidgets.org/ticket/16034

2014-12-11 Ethan A Merritt  <merritt@u.washington.edu>

	* src/wxterminal/gp_cairo.c (gp_cairo_move gp_cairo_initialize_plot):
	Do not let zero-length move iterrupt the current polyline context
	(dash pattern, end caps, polygon closure).
	Bug #1523

	* src/plot2d.c (eval_plots):  Save/restore original dummy variable name
	for 'x', so that a sampling range using a named variable does not
	clobber it.

2014-12-11  Bastian Maerkisch  <bmaerkisch@web.de>

	* src/win/wgraph.c (drawgaph) src/win/wgdiplus.c (drawgraph_gdiplus):
	Ignore intermediate move commands in a polyline sequence. Fixes
	custom dashpatterns for splots and improves drawing performance. Note
	that custom dashpatterns are only available for the GDI+ variant.
	Bug #1523

2014-12-11  Shigeharu Takeno  <shige@iee.niit.ac.jp>

	* docs/gnuplot.doc docs/term-jp.diff:  sync to docs version 1.902.2.20

2014-12-08  Bastian Maerkisch  <bmaerkisch@web.de>

	* src/term.c (do_point):  Always use solid lines to draw point symbols.

	* src/win/wgraph.c term/win.trm:  Make sure that the window size
	variables are initialized if wgnuplot.ini does not exist yet.
	Fixes a regression introduced on 2014-10-16.

2014-12-05 Ethan A Merritt  <merritt@u.washington.edu>

	* term/PostScript/prologue.ps:  Re-order dash types to more closely
	match the cairo and qt terminals.

	* src/wxterminal/wxt_gui.*: The toolbar widgets for replot/zoom/grid
	require intervention by the core code in order to act.  This is not
	possible when in -persist mode after the parent process has exited,
	so disable the toolbar widgets.

	* src/gp_types.h: New state flag INVALID_NAME for internal variables.
	src/eval.c (pop_or_convert_from_string eval_link_function):
	Consolidate initial tests for invalid internal variable type.
	Test for the correct use of linked axis mapping function variables
	(f(x) for x axis, f(y) for y axis, etc).
	Bug #1519

2014-12-01 Ethan A Merritt  <merritt@u.washington.edu>

	* src/axis.c (clone_linked_axes): Sanity check for linked axis via and
	inverse functions used fabs() with wrong grouping of parentheses.
	Bug #1519

2014-11-25 Ethan A Merritt  <merritt@u.washington.edu>

	* src/qtterminal/qt_term.cpp: Increase the number of pre-defined dash
	patterns for the qt terminal to 5, matching the order used by the cairo
	terminals.

2014-11-23 Ethan A Merritt  <merritt@u.washington.edu>

	* src/axis.c src/set.c: The full names of the parallel axes are too long
	to fit in character arrays built to hold the simpler name "x2/cb/etc".
	But the 'set' commands using these arrays do not apply to parallel axes,
	so we avoid problems by never loading these arrays for parallel axes.

2014-11-21 Ethan A Merritt  <merritt@u.washington.edu>

	* term/gd.trm:  Replace the dotted-line code in PNG_vector with an 
	adaptation of the dash pattern code used by canvas.trm.

	* src/term.c (term_apply_lp_properties):  Special linetype LT_AXIS is
	intended to produce a dotted line if possible, even on terminals that
	do not support the general dash pattern mechanism introduced in v5.
	This means that when rendering lines with linetype LT_AXIS the 
	dashtype code should not be called at all. This bug affected at least
	the gd and qt terminals.
	Bug #1516

	* src/axis.c (axis_name) src/save.c: paxis tics and range settings
	were not being saved.

	* src/show.c: formatting typos (missing \t at beginning of line)

	* src/graphics.c (map_position_r): If only the x coordinate delta is
	requested, don't bother to calculate delta y, particularly because
	delta y=0 will fail if y is log scale.
	Bug #1512

2014-11-12 Ethan A Merritt  <merritt@u.washington.edu>

	* bump patchlevel identifier to -rc3

2014-11-11 Ethan A Merritt  <merritt@u.washington.edu>

	* src/term_api.h term/README:  Add a 2nd parameter to the interface for
	term->modify_plots(operations, plotno). All terminals for which this
	entry point is not NULL must be updated accordingly.  This patch does
	not by itself add any new functionality or user-visible change.
	Better to make this change now rather than after release of 5.0 since it
	breaks compatibility between core code and outboard drivers.

	* src/mouse.c src/gplt_x11.c term/caca.trm term/win.trm term/x11.trm
	src/qtterminal/QtGnuplotScene.cpp src/qtterminal/qt_term.*
	src/wxterminal/wxt_gui.cpp src/wxterminal/wxt_term.h:
	Update term->modify_plots() entry in the terminals that provide it.

2014-11-07 Akira Kakuto <kakuto@fuk.kindai.ac.jp>

	* term/luz/gnuplot-tikz.lua:  Use \errmessage rather than \PackageError
	because not all TeX variants provide the latter.

2014-11-07 Ethan A Merritt  <merritt@u.washington.edu>

	Timefmt revision part 1 of 7
	* src/axis.c src/axis.h src/datafile.c src/fit.c src/mouse.c src/parse.c
	src/save.c src/set.c src/setshow.h src/show.c src/unset.c
	docs/gnuplot.doc demo/gantt.dem:

	- Remove axis->timefmt and replace it with a single global timefmt.
	  This is what the documentation has always said, but it breaks the
	  undocumented command:   set timefmt y "fmt-different-from-xaxis-fmt"
	- Add a new flag axis->tictype to control interpretation of tic format.
	  axis->datatype will continue to control input format interpretation. 

	Timefmt revision part 2 of 7
	* src/save.c src/save.h src/setshow.h src/show.c:

	- Replace macro SAVE_NUM_OR_TIME with routine save_num_or_time_input().
	  This routine uses _input_ data format, mostly for reporting axis range.

	Timefmt revision part 3 of 7
	* src/save.c src/save.h src/show.c:

	- Show and save xyz positions using time-format coordinates when needed.
	  Note that like axis ranges, these are meant to be read in again later.
	  Thus they are written using the input format not the output format.

	Timefmt revision part 4 of 7
	* src/axis.c (get_tics copy_or_invent_formatstring) src/set.c
	src/unset.c src/show.c src/save.c docs/gnuplot.doc demo/world.dem:

	- New command set {xyz}tics {time|geographic|numeric} sets axis->tictype
	- Output formats chosen based on axis->tictype rather than axis->datatype
	- Report axis->tictype setting with axis->format in "show" and "save"

	Timefmt revision part 5 of 7
	* src/datafile.c src/parse.c:

	- Track how many parameters were passed to timecolumn(), so that
	  version 4 behavior can be emulated when only 1 parameter is passed.

	Timefmt revision part 6 of 7
	* src/axis.h src/set.c:

	- Add the tictype keywords to set format {axis} {time|geographic|numeric}
	- Reset to numeric on "unset format"

	Timefmt revision part 7 of 7
	* src/time.c (gstrftime xstrftime) docs/gnuplotdoc demo/timedat.dem:

	Introduce a new time format modifier 't', used to distinguish dates
	from times.  This allows formatting time data as hours/minutes/seconds
	relative to time=0 rather than as a calendar date.  Compare these
	representations of the stored value -3672.50 seconds:
	    default date format    # "12/31/69 \n 22:58"
	    format "%tH:%tM:%tS"   # "-01:01:12"
	    format "%.2tH hours"   # "-1.02 hours"
	    format "%tM:%.2tS"     # "-61:12.50"

2014-11-07  Daniel J Sebald <daniel.sebald@ieee.org>

	* src/wxterminal/wxt_gui.{cpp|h}:  Add a toolbar widget on the wxt
	terminal to export current plot to a PNG, SVG, or PDF file.

2014-11-04 Ethan A Merritt  <merritt@u.washington.edu>

	* src/datafile.c (f_dollar f_column):  When a data field containing NaN
	is encountered, df_readline returns DF_UNDEFINED to the caller.
	This is sufficient to handle plotting that point per se, but if the
	value is also used in evaluation of an arithmetic expression with a side
	effect then this undefined status flag is not available. For consistency
	we now pass NaN to the expression evaluation code as well.  E.g.
		plot FOO using 1:(side_effect=f($2))
	could leave some random (probably left-over) value in side_effect.
	Now if $2 is NaN and for example f(x) = (x+foo) then side_effect becomes
	NaN also.  Before this side_effect would have received some other,
	incorrect, numerical value.

	* src/save.c (save_dashtype):  dashtype -1 is an internal flag; do not
	save it to an external file.

2014-11-01 Ethan A Merritt  <merritt@u.washington.edu>

	* term/cairo.trm (cairotrm_put_text) src/wxterminal/wxt_gui.cpp
	(wxt_put_text):  Start each top level enhanced text recursion  using
	the full font name given in "set term font 'foo'", rather than the
	most recent font stored in the plot (which is only the font family
	name, not bold/italic/other).  This maintains bold or italic in the
	original font name, but I am not entirely convinced that it cannot
	overwrite an intentional change in font family.
	Bug #1505

2014-10-31 Ethan A Merritt  <merritt@u.washington.edu>

	* src/plot2d.c:  Issue a warning if someone tries to specify a
	sampling range for a data plot.
	Bug #1510

2014-10-31  Bastian Maerkisch  <bmaerkisch@web.de>

	* src/wxterminal/wxt_gui.cpp (wxtFrame::OnSize):  Only replot on
	resize if the wxt settings were properly initialized by wxt_init().
	On Windows, this would otherwise cause many graph windows to be
	opened when the first plot command is issued and gnuplot finally
	hangs or crashes.
	Bugfix.

2014-10-29  Christoph Bersch <usenet@bersch.net>

	* term/lua/gnuplot-tikz.lua term/luz.trm:  Boxed text support.

2014-10-26 Ethan A Merritt  <merritt@u.washington.edu>

	* term/wxt.trm src/wxterminal/wxt_term.h src/wxterminal/wxt_gui.*:
	Add a checkbox to the tool widget controlling whether or not the
	plot is redrawn via "replot" as the terminal window is resized.

2014-10-19  Christoph Bersch <usenet@bersch.net>

	* term/lua/gnuplot-tikz.lua:  Missing initializations.
	Bug #1503

2014-10-16  Christoph Bersch <usenet@bersch.net>

	* src/stats.c:  The stats code was confusing the x and y dimensions of
	matrix data.  E.g. it would report a 5X7 matrix as being 7X5, and 
	mis-calculate the indices of the min/max values.
	Bug #1501

	* term/lua/gnuplot-tikz.lua:  Fix incorrect font test.
	Bug (Feature Request) #409

2014-10-16  Bastian Maerkisch  <bmaerkisch@web.de>

	* src/win/wgraph.c src/win/wgidplus.c:  Accept zero point size.
	Eliminates drawing of unwanted point symbols for labelled contours.
	Bugfix

	* src/win/wgnuplib.h src/win/wgraph.c term/win.trm:  The `size` option
	now refers to the canvas size instead of the window size in order to be
	consistent with the qt and wxt terminals.  The window size can still be
	set with the new `wsize` option. Settings are now included in output of
	`show term`.
	Bug #1400

	* src/win/wgraph.c term/win.trm:  The windows terminal allowed users
	to change linetypes via an ini file or with the help of a dialog.  This
	has been superseeded by the more general `set linetype` mechanism.
	The old code is still available but only active with WIN_CUSTOM_PENS
	defined during compilation.

2014-10-11  Christoph Bersch <usenet@bersch.net>

	* term/lua/gnuplot-tikz.lua:  LT_AXIS and LT_SOLID imply specific
	dash types.
	Bug #1491

2014-10-11  Hans-Bernhard Broeker  <broeker@physik.rwth-aachen.de>

	* src/axis.c (copy_or_invent_formatstring): Lower end of axis may
	need more precision in invented format than the distance between
	max and min. Bug #1496

2014-10-08 Ethan A Merritt  <merritt@u.washington.edu>

	* src/save.c (save_all): Write out the filename last used for plotting.
	This makes a saved plot command referencing '' slightly more useful.

2014-10-07 Ethan A Merritt  <merritt@u.washington.edu>

	* src/misc.c (lf_push lf_pop):  If lf_push/lf_pop are invoked from
	do_string_and_free to handle bracketed if{} or do{} expressions, they
	should not touch the call arguments ARG1, ARG2, ...  Save/restore of the
	call arguments is only needed if lf_push/lf_pop are invoked by "call".
	Bug #1494

2014-10-03  Christoph Bersch <usenet@bersch.net>

	* term/lua/gnuplot-tikz.lua:  linetype -1 must reset dashtype to solid.
	Bug #1491

2014-10-01 Ethan A Merritt  <merritt@u.washington.edu>

	* src/misc.c (arrow_parse): Remove order dependence of "fixed" keyword.

	* src/hidden3d.c (draw_edge): When an arrow is split into segments by
	hidden surface processing, only keep the arrowhead on the original tip.

	* src/plot2d.c (get_data): Timedata for HISTOGRAMS requires a special
	case.

	* term/aed.trm term/v384.trm
	config/makefile.dj2 config/makefile.emx config/makefile.vms
	configure.vms docs/doc2texi.el docs/Makefile.am src/makefile.all
	src/makefile.awc src/term.h:

	Remove obsolete terminals:
	aed:  pre-1980 display device ($15,000) with 500x500 pixels, 256 colors
	v384: Vectrix VX 384 mid 1980s graphics display terminal ($5000) with
	      672x480 pixels, 512 colors

	* docs/gnuplot.doc:  Replace outdated section on `set xdata time`.

2014-09-26 Ethan A Merritt  <merritt@u.washington.edu>

	* term/js/gnuplot_mouse.js:  Typo in logical test for hypertext.

	* src/axis.h src/save.c src/set.c src/show.c src/unset.c src/graphics.c
	src/graph3d.c:   set [*]tics {{no}enhanced}

2014-09-24 Ethan A Merritt  <merritt@u.washington.edu>

	* src/interpol.c:  Force the number of intervals used for interpolating
	monotonic cubic splines ("smooth mcsplines") to be at least twice the
	number of data points.

2014-09-22  Christoph Bersch <usenet@bersch.net>

	* src/misc.c (parse_fillstyle): Remove order dependence of keyword 
	"transparent".

	* term/lua.trm term/lua/gnuplot-tikz.lua:
	Support RGBA linecolors and LT_NODRAW.  Add a linewidth terminal option.

2014-09-20  Bastian Maerkisch  <bmaerkisch@web.de>

	* src/fit.c src/fit.h src/save.c src/set.c src/show.c src/unset.c
	docs/gnuplot.doc demo/fit.dem:  Remove xerrors option (which requires 3
	columns) since it is not like the xerrorbars plot style (which requires 4). 
	Rename `noerrors` option to `unitweights`.  Let the fit command default
	to `unitweights`, i.e. do not interpret the last column of the using
	spec as z-errors.  Add a command `set fit v4|v5` to switch between
	old-style command line syntax and the new one. Default to `v5`, but
	`reset` does not change the current setting.

	Note that this change is backward-incompatible with v5-rc1 and v5-rc2.
	However it restores compatibility with v4, subject to the restriction
	that v4 syntax is only recognized if all independent variables appear
	in the "fit" command itself (see below).

	* src/fit.c: Ethan A Merritt - use the tally of dummy variable names
	to detect version 4 syntax in which the last column of a using spec
	contains zerror but no "*error" keyword is provided.

2014-09-18 Ethan A Merritt  <merritt@u.washington.edu>

	* src/datafile.c:  Revised error message for datafile open failure.

	* src/fit.c src/parse.c src/parse.h (int fit_dummy_var[]):
	Track the occurrence of dummy variable names in a fit command. This lets
	us count the independent variables so long as they are not obscured.
	   fit f(x,y) 'data' using 1:2:3:4      # flags use of 'x' and 'y'
	   fit x*y    'data' using 1:2:3:4      # flags use of 'x' and 'y'
	   g(x) = x*y;
	   fit g(x)   'data' using 1:2:3:4      # flags 'x', doesn't notice 'y'
	In each case fit_dummy_var[0] is 1.  In the 3rd case fit_dummy_var[1]
	is 0 but should be 1.  Fixing this would be quite hard.

2014-09-14  Bastian Maerkisch  <bmaerkisch@web.de>

	* src/mouse.c (xDateTimeFormat):  Use gnuplot's own ggmtime() instead
	of gmtime() to avoid platform dependant restrictions. Fixes display of
	dates before 1970 and after 2038 in the status bar on Windows.
	Bug #1470

2014-09-09  Pieter-Tjerk de Boer <p.t.deboer@utwente.nl>

	* docs/gnuplot.doc:  Update help on fit to new command syntax.

2014-09-09  Akira Kakuto <kakuto@fuk.kindai.ac.jp>

	* src/win/wpause.c (PauseBox):  Do not wait for further events after
	pause dialog box was closed. Bugfix.

2014-09-08  Christoph Bersch <usenet@bersch.net>

	* demo/stringvar.dem docs/gnuplot.doc src/internal.c (f_word f_words):
	Modify the word() and words() functions to recognize quoted strings
	inside the top level string as single entities.

2014-09-08  Christoph Junghans <ottxor@users.sourceforge.net>

	* configure.in:  New option --without-libcerf

2014-09-08 Ethan A Merritt  <merritt@u.washington.edu>

	* src/misc.c (lp_parse parse_colorspec):  Allow a quoted colorname to
	immediately follow the keywords lc|linecolor|fc|fillcolor; i.e. in this
	case the additional rgbcolor keyword is optional.

2014-09-08  Shigeharu Takeno  <shige@iee.niit.ac.jp>

	* docs/gnuplot.doc docs/term-ja.diff docs/gnuplot-ja.doc
	man/gnuplot-ja.1:  Sync Japanese documentation to 1.902.2.5

2014-09-07 Ethan A Merritt  <merritt@u.washington.edu>

	* src/plot2d.c:  "set linetype 1 pt 'A'; plot x with lp" requires that
	the plot->labels field be initialized before plotting.

	* src/save.c:  handle PT_CHARACTER when saving linetype

2014-09-05 Ethan A Merritt  <merritt@u.washington.edu>

	* src/term_src/api.h src/gadgets.c src/hidden3d.c src/misc.c
	src/plot2d.c src/plot3d.c src/save.c src/set.c src/ show.c src/term.c:

	The field lp_style_type.pointflag was variously used as a Boolean,
	an integer, or a magic number indicating an uninitialized state.
	Clean this up by replacing it with a bitfield lp_style_type.flags
	with defined bits LP_SHOW_POINTS LP_NOT_INITIALIZED LP_EXPLICIT_COLOR.
	This has the side effect of allowing a trivial fix for a regression
	in 4.6.5 that caused "set hidden3d; splot ... lc <foo>" to ignore the
	requested color.  See Bugs #1284 #1475

2014-09-05  Karl Ratzsch  <ratzsch@uni-freiburg.de>

	* docs/plotstyles.gnu:  Dummy up a version of the missing/NaN figure
	for use with Windows documentation.

2014-09-04 Ethan A Merritt  <merritt@u.washington.edu>

	* src/graphics.c (place_arrows) src/graph3d.c (place_arrows3d):
	Revert arrowhead patch of 2014-08-18.  Document that if you want a
	dashed arrow shaft it is best to use "nofilled" for the arrow head.
	Bugs #1460 #1476

2014-09-03  Ethan A Merritt  <merritt@u.washington.edu>

	* src/graph3d.c src/hidden3d.c:  "splot ... with dots" was not drawing
	the dots.
	Bug #1474

2014-08-31  Ethan A Merritt  <merritt@u.washington.edu>

	* src/stats.c docs/gnuplot.doc:  Calculate and report sample standard
	deviation (STATS_ssd) as well as the population standard deviation 
	(STATS_stddev).  Provide formulae for the reported quantities in the
	LaTeX documentation, and document the difference between
	_ssd and _stddev in all documentation formats.

	* src/stats.c:  In version 5 when there is no using spec df_readline()
	always returns at most the number of columns present on the first line.
	Bug #1472

2014-08-30  Petr Mikulik  <mikulik@physics.muni.cz>

	* config/config.os2: Use _strtoll.

2014-08-29  Petr Mikulik  <mikulik@physics.muni.cz>

	* src/gplt_x11.c (exec_cmd process_configure_notify_event):
	Add missing #ifdefs: USE_X11_MULTIBYTE and PIPE_IPC.

2014-08-28  Ethan A Merritt  <merritt@u.washington.edu>

	* Prepare release notes for 5.0.rc2
	* src/fit.c:  Initialize number of error terms for "zerror" option
	(fixes a possible segfault) but otherwise defer work on the new error
	options for later as warned in the release notes.

2014-08-22  "Jun T." <takimoto-j@kba.biglobe.ne.jp>.

	* src/bf_test.c:  Use HAVE_STDLIB_H and HAVE_MALLOC_H to determine
	proper system header file for calloc().

2014-08-21  Ethan A Merritt  <merritt@u.washington.edu>

	* src/fit.c:  Handle columnheaders in input to "fit".
	Bug #1467

2014-08-20  Ethan A Merritt  <merritt@u.washington.edu>

	* Branchpoint for 5.0 (cvs tag -b branch-5-0-stable)

2014-08-20 Ethan A Merritt  <merritt@u.washington.edu>

	* src/wxterminal/gp_cairo.c:  Distinct empirical scale factors for
	dashlength used by pngcairo, pdfcairo, and wxt.
	* term/emf.trm:  Scale dashlength with current linewidth.

2014-08-18 Ethan A Merritt  <merritt@u.washington.edu>

	* src/graphics.c (place_arrows) src/graph3d.c (place_arrows3d):
	Only invoke the arrowheads only code if there really is an arrowhead.

2014-08-18  Hans-Bernhard Broeker  <broeker@physik.rwth-aachen.de>

	* config/mingw/Makefile (VPATH): Drop $W from VPATH.  Necessary to
	avoid circular dependency on wgnuplot.mnu
	(%.$(O)): Use pattern rule instead of VPATH to build Windows
	source files.
	(VERSIONING): Avoid inverted logic in makefile conditional.
	(console, windows, pipes): Simplify by letting the default rule in
	the sub-make handle things.
	(default, all): Versioning is really needed by $(TARGET) rule,
	so let that handle constructing it.
	($(TARGET)): Do VERSIONING first, drop dependencies on icon files.
	(%.o): Use pattern rules to build Qt source files.  Much simpler
	than spelling it out long hand for every single source file.

2014-08-15 Ethan A Merritt  <merritt@u.washington.edu>

	* src/bf_test.c src/Makefile.am src/binary.* (removed)
	config/makefile.os2 config/makefile.dj2 config/makefile.cyg
	config/cygwin/Makefile config/mingw/Makefile config/msvc/Makefile:
	Remove bf_test dependence on all other gnuplot files and libraries.
	This makes binary.c and binary.h superfluous.
	Bugs #1412 #1451

	* src/makefile.all src/makefile.awc: Remove mention of binary.o

	* config/*/Makefile: Remove alloc and binary from bf_test dependencies

	* src/graphics.c (place_objects) src/set.c (set_obj):
	Apply default rectangle style at the time of a "set object rect"
	command rather than waiting until the rectangle is drawn.  This prevents
	the default style line/dash settings from overriding explicit rectangle
	commands.
	Bug #1460

	* src/save.c (save_linetype):  Bugfix - dashtype was being saved only if
	there was also a point type.

	* src/gadgets.c (apply_pm3dcolor):  Don't clobber current dashtype by
	calling term->linetype(LT_BLACK).  Call term->set_color(BLACK_COLORSPEC)
	instead.

	* src/graphics.c (place_arrows) src/graph3d.c (place_arrows3d):
	Force solid lines for arrow heads.

2014-08-15  Shigeharu Takeno  <shige@iee.niit.ac.jp>

	* src/gplt_x11.c:  For single byte fonts gnuplot_x11 uses a list of
	previously used fonts to speed up the search for a new target font.
	Now we add an equivalent for multi-byte font search.

2014-08-14 Ethan A Merritt  <merritt@u.washington.edu>

	* src/graphics.c (do_rectangle) src/graph3d.c (map3d_position_r)
	demo/rectangle.dem:  Fix y extent and clipping of rectangles with
	negative y coord or inverted axes.
	Bug #1462

2014-08-05 Ethan A Merritt  <merritt@u.washington.edu>

	* src/mouse.c (event_buttonpress):  Remove extraneous event_reset.

2014-08-02 Ethan A Merritt  <merritt@u.washington.edu>

	* src/misc.c (parse_colorspec):  Apply user-defined line colors
	to text color also.
	Bug #1452

	src/misc.c src/save.c src/set.c src/term.c src/term_api.h:
	Store custom dashtype string as a constant length character array
	rather than a dynamically allocated string.  This fixes memory
	leakage that happened whenever a linetype using dashes was discarded.

2014-08-01 Ethan A Merritt  <merritt@u.washington.edu>

	* src/mouse.c (event_buttonpress):  Trap mouse button click on
	press rather than on release so that "pause mouse {button1|any}"
	takes precedence over a key binding to the mouse button.
	Bugfix

2014-07-30 Ethan A Merritt  <merritt@u.washington.edu>

	* term/x11.trm:  Remove misleading mention of -noevents.  This is a
	command line option for gnuplot_x11, not for gnuplot itself.

	* src/datafile.c docs/gnuplot.doc demo/heatmaps.dem:
	New text input matrix keywords `columnheaders` and `rowheaders`.
	These handle reading matrix data from a csv file in which the first
	row and/or column contains labels rather than data.

	* src/eval.c (update_plot_bounds):  Provide a user-visible copy of
	the current terminal scale (oversampling, etc) as GPVAL_TERM_SCALE.
	Bug #1291

2014-07-28 Allin Cottrell  <cottrell@wfu.edu>

	* src/syscfg.h:  Report 32/64 bit Windows build in version string

2014-07-28 Ethan A Merritt  <merritt@u.washington.edu>

	* src/wxterminal/gp_cairo.c:  Do not pass a linewidth of zero to the
	cairo library.  The linewidth of LT_AXIS is now set in the core code,
	do not further reduce it in gp_cairo_stroke().

2014-07-25 Ethan A Merritt  <merritt@u.washington.edu>

	* src/gplt_x11.c: Scale x11 dashlength with linewidth.

2014-07-23  Shigeharu Takeno  <shige@iee.niit.ac.jp>

	* src/mouse.c src/mouse.h src/set.c src/show.c docs/gnuplot.doc:
	New command 'set mouse zoomfactors <xfactor>,<yfactor>'

2014-07-22 Ethan A Merritt  <merritt@u.washington.edu>

	* src/gp_types.h src/plot2d.c (store2d_point):
	INRANGE/OUTRANGE refer to points that are inside/outside the plot
	boundaries as defined by xrange, yrange, etc.  They fail to handle
	points that are outside theta range limits given for polar data.
	That is, a point may be outside of trange [pi/2:pi] even though it
	would lie well inside the plot boundaries if drawn.
	Add a new category EXCLUDEDRANGE for such points. 

	* src/graphics.c (plot_impulses):  Test for EXCLUDEDRANGE data points
	so that set trange [theta_min:theta_max] actually does something.
	Bug #1439

	* demo/poldat.dem:  Make sure trange includes the whole plot.

2014-07-18 Ethan A Merritt  <merritt@u.washington.edu>

	* demo/Makefile.am.in: Do not create a symlink to GNUPLOT_X11 in the
	build directory during "make check". This was probably intended to 
	handle the rare case of ./configure --program-suffix=foo but it breaks
	the more common case of configuring on a system without x11 support
	and then running "make check" twice.
	Bugfix

2014-07-14 Ethan A Merritt  <merritt@u.washington.edu>

	* src/gadgets.c src/save.c src/set.c src/gadgets.h:
	Continue to recognize "set style increment user" even though it has
	been deprecated in favor of "set linetype".
	Bug #1411 (not really a bug)

2014-07-12 Ethan A Merritt  <merritt@u.washington.edu>

	* src/parse.c (check_for_iteration):  Fix failure to detect some loop
	[start:end:increment] combinations that should be executed only once
	or not executed at all.
	Bug #1441

2014-07-10  Ethan A Merritt  <merritt@u.washington.edu>

	* src/set.c (set_dummy):  More sanity checks on "set dummy" syntax.
	Bug #1442

2014-07-06  Ethan A Merritt  <merritt@u.washington.edu>

	* src/set.c (load_tic_user):  "set Xtics ()" should clear the list
	of user-specified tics rather than setting tic generation to auto.

2014-07-04  Shigeharu Takeno  <shige@iee.niit.ac.jp>

	* docs/gnuplot.doc docs/term-ja.diff docs/gnuplot-ja.doc
	man/gnuplot.1 man/gnuplot-ja.1:
	Fix typos. Sync Japanese documentation to 1.896

2014-07-04  Bastian Maerkisch  <bmaerkisch@web.de>

	* src/win/wgraph.c:  'q' closes graph window.

	* src/qtterminal/qt_term.cpp (qt_options) term/wxt.trm (wxt_options):
	On Windows, the wxt and qt terminals can be used in the same session.

2014-07-01  Ethan A Merritt  <merritt@u.washington.edu>

	* term/cairo.trm, term/wxt.trm:
	Always report {no}enhanced property in "show term".

	* src/color.c: If the current terminal has property "monochrome" then
	convert all requests for constant color as "black".
	Bug #1423

2014-06-24  Ethan A Merritt  <merritt@u.washington.edu>

	* src/set.c src/show.c src/tables.c docs/gnuplot.doc:
	New command:  set margins <left>, <right>, <top>, <bottom>
	acts just like four successive commands set lmargin <left>, ...

	* src/unset.c:  unset margins

2014-06-20  Ethan A Merritt  <merritt@u.washington.edu>

	* configure.in src/wxterminal/wxt_gui.h:  The configuration test for
	wxWidgets >= 2.8 had no effect on code generation. Remove this test.

	* configure.in src/wxterminal/wxt_gui.h:  Revert the attemp to guess
	whether -lX11 is required by wxt. As feared, this causes problems on OSX
	and other platforms where wx is built on top of something other than X11.

2014-06-16  Karl Ratzsch  <ratzsch@uni-freiburg.de>

	* fit.c:  FIT_NITER holds number of iterations used by previous fit.

2014-06-16  Ethan A Merritt  <merritt@u.washington.edu>

	* configure.in src/wxterminal/wxt_gui.h:  wxWidgets versions > 2.8 want
	the main program to call XInitThreads(), but fail to specify -lX11 in 
	wxt-config.   So we force this ourselves.   [=> reverted 2014-06-20]
	Bug #1401

	* src/graphics.c (xtick2d_callback): Clip r axis tics and tic labels to
	the bounding box of the plot.
	Bug #1290

2014-06-15  Dmitri A. Sergatskov  <dasergatskov@gmail.com>

	* configure.in: Add LRELEASE for Qt5 autoconfiguration

2014-06-15  Bastian Maerkisch  <bmaerkisch@web.de>

	* src/plot.c (main):  Fix persist mode on Windows when reading
	from a pipe.
	See Bug #1322

2014-06-15  Akira Kakuto <kakuto@fuk.kindai.ac.jp>

	* src/binary.c src/datafile.h src/syscfg.h:  LFS support on Windows
	for MSVC and MinGW.
	See also Patch #675

2014-06-14  Ethan A Merritt  <merritt@u.washington.edu>

	* src/axis.h src/axis.c src/boundary.c src/plot2d.c (eval_plots):
	Unlike all other axes, log scaling was being applied to the color axis
	(cb) in do_plot() rather than in the caller eval_plots().
	This caused "refresh" (as opposed to "replot") to fail.  Move the
	log-scale correction up to eval_plots() like the other axes.
	Bug #1425

	* src/misc.c (prepare_call):  Allow parenthesized expressions as
	call parameters.  The value is passed as a string.

	* src/command.c (exit_command):  New option "exit error 'message'"
	prints the message and return to the top command line, breaking out
	of any loops or calls cleanly.  In non-interactive mode the program
	then exits.

2014-06-13  Bastian Maerkisch  <bmaerkisch@web.de>

	* src/qtterminal/qt_term.cpp (qt_waitforinput):  Fix index error
	when trying to stop thread which reads from pipe.
	Bug #1426

2014-06-13  Ethan A Merritt  <merritt@u.washington.edu>

	* src/datafile.c (df_generate_pseudodata):  Do not try to access plot
	structure if we were called from fit rather than plot.
	Bug #1427

2014-06-12  Christoph Bersch <usenet@bersch.net>

	* term/lua.trm term/lua/gnuplot-tikz.lua:
	Scale dashlength with linewidth.

2014-06-11  Ethan A Merritt  <merritt@u.washington.edu>

	* src/mouse.c (event_reset) src/qtterminal/QtGnuplotWindow.{h|cpp}:
	Window close events from qt were not being passed through to the main
	program, so "pause mouse close" did not work. Also a backgrounded 
	instance could hang rather than exit when the last plot window closed.
	Bug #1418

	* src/fit.c: Remove spurious test and error message for time data
	with only 2 columns in the using spec.
	Bug #1424

	* man/gnuplot.1: update

2014-06-11  Mojca Miklavec  <mojca.miklavec.lists@gmail.com>

	* term/aquaterm.trm:  Correctly support encoding CP1252.

2014-06-11  Tatsuro MATSUOKA <tmacchant3@yahoo.co.jp>

	* win/gnuplot.iss:  Include Qt platform DLLs in distribution package.

2014-06-10  Ethan A Merritt  <merritt@u.washington.edu>

	* docs/gnuplot.doc:  Add a section explaining the "persist" option.
	Bug #1418, #1419

	* term/post.trm term/svg.trm src/qtterminal/qt_term.cpp:
	Add an empirical scale factor to the dashlength*linewidth computation to
	make the resulting patterns closer in total size to the built-in ones.

2014-06-10  Christoph Bersch <usenet@bersch.net>

	* term/post.trm term/svg.trm:  Scale dashlength with linewidth.

2014-06-09  Daniel J Sebald <daniel.sebald@ieee.org>

	* src/qtterminal/QtGnuplotWidget.cpp (processEvent):  Always "resize"
	the initial plot to its own size.  This may work around strangeness on
	some systems that create the initial qt plot window with the wrong size.
	Bug #1417 (forwarded from Debian) Patch #661

2014-06-09  Bastian Maerkisch  <bmaerkisch@web.de>

	* src/win/wgdiplus.cpp src/win/wgraph.c src/win/wgnuplib.h
	term/win.trm:
	Version 5 dashtypes. Custom dashtypes supported by GDI+ driver.

	* src/wxterminal/wxt_gui.cpp:  Also "restore" the window state on
	"raise".
	Bug #1389

	* src/win/winmain.c (WinMain):  Change type from PASCAL to CALLBACK.

	* src/fit.c:  Test if covariance matrix is available before saving
	it to user variables.

2014-06-08  Shigeharu Takeno  <shige@iee.niit.ac.jp>

	* docs/gnuplot.doc win/README-Windows.txt win/README-ja.txt
	docs/gnuplot-ja.doc:  sync to docs version 1.891

2014-06-07  Mojca Miklavec  <mojca.miklavec.lists@gmail.com>

	* src/wxterminal/gp_cairo.c:  Scale dashlength with linewidth, similar
	to what qt does.

2014-06-04  Bastian Maerkisch  <bmaerkisch@web.de>

	* src/plot.c src/win/winmain.c|h term/caca.trm:  Only if a wxt, caca
	or windows terminal window is open, the -persist option is handled by
	keeping the main input loop running. This is unfortunate but maybe the
	best we can do since we are missing a process fork or detach mechanism.
	This avoids a zombie process when no plot windows are open in a
	session. For the qt terminal -persist works as on other platforms
	since it uses a secondary process.
	Bugs #1308, #1335, #1343

2014-06-03  Ethan A Merritt  <merritt@u.washington.edu>

	* src/graph3d.c src/show.c src/save.c docs/gnuplot.doc:
	The hidden3d code processes the lines making up the plot border using
	the same algorithm as it does for the plot elements.  This renders
	partially occluded borders correctly for actual surfaces but fails to
	recognize occlusion for, e.g., 3D histograms drawn with impulses.
	New keyword option "set border behind" draws the border lines before
	the plot elements even for hidden3d plots.

	* src/term_api.h src/wxterminal/gp_cairo.c src/wxterminal/wxt_gui.cpp:
	Change the implementation of greying out inactive keybox entries in wxt
	to use a textbox rather than the active area of the key entry.
	Bug #1416

	* src/hidden3d.c (draw_vertex):  Handle p_type == PT_CHARACTER.

2014-06-02  Bastian Maerkisch  <bmaerkisch@web.de>

	* src/win/wgraph.c src/win/wgdiplus.cpp:
	Grey out key entries when corresponding plot is toggled off.

	* src/win/wgraph.c (GraphUpdateWindowPosSize) src/win/wgnuplib.h
	term/win.trm (WIN_options):  Immediately apply changes to window
	position and size.
	Bug #1400

	* src/datafile.h:  Revert the Windows LFS changes for now as
	they seem to cause problems on some systems.

2014-06-01  Ethan A Merritt  <merritt@u.washington.edu>

	* src/axis.c src/gadgets.c src/misc.c src/set.c src/unset.c:
	Replace magic numbers with LAYER_{BEHIND|BACK|FRONT}.

	* src/graph3d.c: Remove obsolete (always true) conditional
	USE_GRID_LAYERS.  Minor clean up for the grid layer logic.

2014-06-01  Tatsuro MATSUOKA <tmacchant3@yahoo.co.jp>

	* win/gnuplot.iss:  Include gnuplot_qt.exe in installer.
	Patch #689

	* src/qtterminal/gnuplot_qt.cpp:  Search for Qt translation files
	in gnuplot's installation directory on Windows.
	Patch #687

2014-06-01  Ethan A Merritt  <merritt@u.washington.edu>

	* src/datafile.h:  Partial support for LFS on Windows. Currently 
	mostly useful for 64 bit builds since integers on the the gnuplot
	command line are limited to 31bits otherwise.
	Patch #675

2014-06-01  Bastian Maerkisch  <bmaerkisch@web.de>

	* config/mingw/Makefile:  Target 'clean' and 'veryclean' include 
	Qt files, see patch #688.

	* config/mingw/Makefile win/gnuplot.iss:  Include RELEASE_NOTES.
	Add "qt" as option as default terminal.

2014-05-30  Ethan A Merritt  <merritt@u.washington.edu>

	* term/post.trm term/cairo.trm:  The "header" keyword for epslatex
	and related terminals can introduce a string of arbitrary length.
	Therefore it is not safe to try to store it in the fixed length 
	term_options character array.
	Bug #1413

	* term/gd.trm:  Limit the stored length of the font so that term_options
	cannot overflow.
	Bug #1413

	* Makefile.am RELEASE_NOTES:  Include Release Notes in the distribution
	package.

	* FAQ.PDF:  Update for version 5.

	* src/gplt_x11.c:
	Grey out key entries when corresponding plot is toggled off.

2014-05-29  Akira Kakuto <kakuto@fuk.kindai.ac.jp>

	* term/caca.trm:  Modify nominal codepage to accommodate CJK Windows.

2014-05-29  Tatsuro MATSUOKA <tmacchant3@yahoo.co.jp>

	* config/mingw/Makefile:  Support compilation of the qt terminal.
	Patch #684

2014-05-29  Karl Ratzsch  <ratzsch@uni-freiburg.de>

	* docs/gnuplot.doc:  Improve documentation of `update` command.
	Patch #686

	* src/win/wgdiplus.c src/win/wgraph.c:  Change order of pointtypes to
	match the sequence in other terminals (cairo, postscript, gd, svg).
	Patch #681

2014-05-28  Ethan A Merritt  <merritt@u.washington.edu>

	* src/graph3d.c (plot3d_points):  Handle pointtype PT_CHARACTER.

	* src/plot3d.c:  Rearrange the order of testing for plot style options
	so that it is not possible to end up with uninitialized font or text
	properties.

2014-05-27  Ethan A Merritt  <merritt@u.washington.edu>

	* src/datafile.c (df_readascii): Report status DF_UNDEFINED if a data
	value evaluates to the constant "NaN", just as if we calculated it on
	the fly to be e.g. 1/0.
	* src/stats.c: Remove out-of-date comment that incorrectly describes 
	what happens in this case.
	Bug #1408

2014-05-26  Ethan A Merritt  <merritt@u.washington.edu>

	* term/js/gnuplot_svg.js term/svg.trm:
	Grey out key entries when corresponding plot is toggled off.

	* src/qtterminal/QtGnuplotItems.* src/qtterminal/QtGnuplotScene.cpp:
	Grey out key entries when corresponding plot is toggled off.

	* src/wxterminal/wxt_gui.cpp (wxt_grey_out_key_box):
	Grey out key entries when corresponding plot is toggled off.

2014-05-24  Bastian Maerkisch  <bmaerkisch@web.de>

	* src/wxterminal/wxt_gui.cpp (wxt_waitforinput):  Do not wait for an
	event when only checking for mouse events.
	Bugfix

2014-05-23  Ethan A Merritt  <merritt@u.washington.edu>

	* src/boundary.c:  A width adjustment for the length of the key title
	was being applied to every column of entries in the key instead of just
	once for the whole key.  Apply the "set key {no}enhanced" property to
	the key title as well as to the individual plot titles.
	Bugfix.

2014-05-19  Ethan A Merritt  <merritt@u.washington.edu>

	* src/wxterminal/wxt_gui.h: Apparently wxWidgets3 (wxgtk3) threads call
	into Xlib but fail to initialize X threading before doing so. Therefore
	we must call XInitThreads before forking wxt threads.
	Bug #1401

2014-05-19  Karl Ratzsch  <ratzsch@uni-freiburg.de>

	* term/emf.trm: Add point types pentagon (14) and filled pentagon (15)

2014-05-16  Ethan A Merritt  <merritt@u.washington.edu>

	* src/term.c (load_linetype):  As documented, "set linetype cycle N"
	should only affect line properties (color, width, dash), not point
	properties (type, interval, size).  This got lost somewhere, which 
	meant point types > linetype_recycle_count were never used by default.
	Now they are.  This means that, as intended, 'with linespoints' cycles
	through (linetype_recycle_count * terminal's_max_point_type) distinct
	combinations before repeating so long as those two numbers are
	mutually prime.  Unfortunately that's not guaranteed and is terminal-
	dependent.  We really need a "set pointtype cycle M" command also so
	that you can choose M to be prime relative to N.
	Bugfix.

	* INSTALL docs/gnuplot.doc:  Update description of new features.

2014-05-15  Ethan A Merritt  <merritt@u.washington.edu>

	* configure.in PATCHLEVEL src/version.c docs/titlepag.tex:
	Bump version information to 5.0.rc1

	* demo/dashtypes.dem:  Avoid irrelevant warning message.

2014-05-14  Karl Ratzsch  <ratzsch@uni-freiburg.de>

	* term/svg.trm src/wxterminal/gp_cairo.c:
	Add point types pentagon (14) and filled pentagon (15)

	* src/qtterminal/QtGnuplotItems.cpp:
	(EAM) Add point types pentagon (14) and filled pentagon (15)

2014-05-13  Ethan A Merritt  <merritt@u.washington.edu>

	* src/command.c src/tables.c src/tables.h: Remove undocumented routine
	test_time(). It was never updated to handle sub-second time precision,
	and in any case the functionality is now covered adequately by
	"print strptime()" and "print strftime()".

	* src/color.c (filled_polygon_3dcoords filled_polygon_zfixed)
	src/pm3d.c (filled_color_contour_plot):	 The option "set pm3d at C" is
	undocumented and doesn't work anyhow.  Wrap the corresponding code in
	#ifdef PM3D_CONTOURS . This disabled code may or may not be useful for
	some future implementation of filled contours.

	* term/post.trm (PS_dashtype): Always stroke the previous path before
	setting a new dashtype.

2014-05-11  Hans-Bernhard Broeker  <broeker@physik.rwth-aachen.de>

	* src/util.c (LOCAL_BUFFER_SIZE): New constant.
	(gprintf): Use constant to identify buffer size, instead of typing
	the same magic number multiple times. Insert warning about
	remaining magic number.

	* src/plot2d.c (get_data): Fix buffer overflow a bit more cleanly.
	(compare_boxplot_factors): Insert warning about magic number.

2014-05-11  Ethan A Merritt  <merritt@u.washington.edu>

	* src/plot2d.c (get_data): fix buffer overflow

	* src/datafile.c (f_stringcolumn): Return an empty string if asked for
	stringcolumn(N) on an empty field of a *.csv file.  Otherwise it would
	return NULL which may cause a segfault later on.
	Bugfix.

	* src/datafile.c (df_readascii): If xticlabels(f(n)) returns a 
	non-string value then do not generate an axis tic.  It used to issue
	a warning about illegal string values but generated a tic anyway.

2014-05-10  Dima Kogan  <dima@secretsauce.net>

	* src/mouse.c (do_zoom rescale_around_mouse):  Handle various conditions
	that caused zooming around the current mouse position to fail.
	Re-applied after tracking down conflict.

2014-05-10  Shigeharu Takeno  <shige@iee.niit.ac.jp>

	* docs/gnuplot.doc: various small corrections
	* docs/gnuplot-ja.doc term-ja.diff:  Sync translation to version 1.887

2014-05-10  Ethan A Merritt  <merritt@u.washington.edu>

	* term/gd.trm: Do not allow setting terminal size to 0.  Bug #1398

2014-05-10  Hans-Bernhard Broeker  <broeker@physik.rwth-aachen.de>

	* term/lua.trm: Ensure initialization of alpha.

	* src/hidden3d.c (store_polygon): Ensure initialization of v[],
	just in case somebody calls this function with an illegal
	'direction' enum value.

	* src/win/wgraph.c (PATTERN_BITMAP_LENGTH): Give name to magic number.
	(pattern_bitmaps): Use new name.

	* term/emf.trm (PATTERN_BITMAP_LENGTH): Give name to magic number.
	(pattern_bitmaps): Use new name and make const.
	(EMF_filled_polygon): Define pattern pointer more locally and make
	it point to const. Use named constant in loop.  Fix table
	underrun.

	* src/win/wgnuplib.c (GetInt): Add some parentheses.

	* src/stats.c (statsrequest): Initialize local data structs, to
	avoid warnings about printing uninitialized results.

	* src/readline.c (BACKSPACE): Define as a character constant, not
	some hex number.
	(readline): Write TAB as character constant, not some hex number.

	* src/interpol.c (gen_interp_frequency): Ensure initialization of
	y_total regardless of smooth type.

	* src/plot3d.c (grid_nongrid_data): Ensure initialization of
	numpoints.

	* src/pm3d.c (pm3d_plot): Ensure initialiation of gray.

	All the following concern the same problem: Macros from <ctype.h>
	cannot safely be called with arguments of type 'char' (because
	that may be signed).  Such values have to be cast to unsigned char
	on passing.

	* src/win/wtext.c (TextPutStr): See above.

	* term/post.trm (PS_load_fontfile): See above.

	* src/win/winmain.c (GetLanguageCode, open_printer): See above.

	* src/util.c (streq): See above.

	* src/term.c (enhanced_recursion): See above.

	* src/scanner.c (legal_identifier, scanner): See above.

	* src/readline.c (backspace): See above.

	* src/plot2d.c (store_label): See above.

	* src/internal.c (f_word): See above.

	* src/gplt_x11.c (exec_cmd): See above.

	* src/eval.c (set_gpval_axis_sth_double): See above.

	* src/datafile.c (df_readascii, plot_option_binary_format): See above.

	* src/command.c (changedir, expand_1level_macros): See above.

	* src/breaders.c (edf_findInHeader): See above.

2014-05-08  Dima Kogan  <dima@secretsauce.net>

	REVERT patch from 2014-04-26 because it broke normal zoom operations.
	* src/mouse.c (do_zoom rescale_around_mouse):  Handle various conditions
	that caused zooming around the current mouse position to fail.

2014-05-08  Ethan A Merritt  <merritt@u.washington.edu>

	* src/axis.h (ACTUAL_STORE_WITH_LOG_AND_UPDATE_RANGE)
	src/plot2d.c (store2d_point) src/plot3d.c (get_3ddata)
	src/datafile.c (df_readascii) src/tabulate.c:
	Revised handling of NaN or Inf in the input data stream.  The program
	used to set type=undefined for this point but left all the data fields
	untouched (i.e. left them containing random garbage).  Version 5 fills
	in all data fields, including the one[s] containing NaN or Inf.
	This means that the output from "set table" matches the input data
	whereas before any line marked "u" contained garbage in the data fields.

	Note: For 3D data z=NaN or z=Inf is replaced by z=0.  This is needed to
	avoid problems with image data.  Possibly this special case should be
	handled in the image code itself rather than at the input stage.

	* src/plot2d.c (impulse_range_fiddling) src/plot3d.c: Don't extend
	range to zero for log-scaled axes.

2014-05-06  Ethan A Merritt  <merritt@u.washington.edu>

	* term/emf.trm: Custom dashtype support.

	* configure.in term/pdf.trm: Modify PDFlib terminal for use with 
	version 5 dashtypes (but no custom dashtype support).  Do not build
	by default.

2014-05-05  Ethan A Merritt  <merritt@u.washington.edu>

	* src/gp_types.h src/graphics.c (place_objects do_rectangle)
	src/misc.c (lp_parse) src/save.c (save_object) src/set.c (set_obj):
	Allow object borders to have a full set of line properties including
	dashtype.

	* docs/gnuplot.doc: Update documentation to better describe recent
	changes.

	* src/qtterminal/QtGnuplotScene.cpp: Always use a solid line to draw
	point symbols, even if the current linetype has a dash pattern.

	* term/cairo.trm term/canvas.trm term/post.trm term/svg.trm term/wxt.trm
	term/x11.trm src/term.c:  Terminals that have been upgraded to version 5
	dash handling should ignore the "dashed/solid" terminal setting.

	* src/plot2d.c (impulse_range_fiddling) src/plot3d.c:  Autoscaled plots
	"with impulses" should include y=0 (z=0 in 3D) unless log-scaled.

2014-05-05  Tatsuro MATSUOKA <tmacchant3@yahoo.co.jp>

	* src/qtterminal/po/qtgnuplot_ja.ts: Update translations

2014-05-03  Ethan A Merritt  <merritt@u.washington.edu>

	* src/qtterminal/po/qtgnuplot_ja.ts: Update translations.

2014-05-01  Hans-Bernhard Broeker  <broeker@physik.rwth-aachen.de>

	* config/mingw/Makefile (LDFLAGS2): Add auto-import flag.
	($(TARGET)): Add icon files and Makefile as dependencies.

	* config/config.mgw, config/config.cyg: The set of used /
	available configuration macros has changed across the past several
	years.

	* src/stdfn.h (sgn): Fix parenthesization of macro.
	(PATH_MAX): CLang compiler on Cygwin needs a silly little tweak.

	* src/graphics.c (samesign): Improve parenthesization a bit.

2014-05-01  Ethan A Merritt  <merritt@u.washington.edu>

	* demo/gantt.dem demo/html/*:  Add Gantt chart to demo collection.
	Add dashtypes to demo collection.

	* src/show.c:  Show "fixed" property of arrow style.

2014-04-29  Ethan A Merritt  <merritt@u.washington.edu>

	* src/datafile.c (f_timecolumn): Replace the old 1-parameter function
	timecolumn(col) with a 2-parameter timecolumn(col,"timeformat"). The
	old version had no way to handle time data that didn't correspond to
	a coordinate on a plot axis in time format (e.g. set xdata time).
	It would segfault if the function appeared in a using spec slot >= 2.
	Now we require an explicit format, so data input is dissociated from
	any particular axis or time setting.
	Bug #1394

	* src/gplt_x11.c term/x11.trm term/xlib.trm:
	Custom dashtype support for X11.

2014-04-28  Dima Kogan  <dima@secretsauce.net>

	* src/mouse.c src/mouse.h src/set.c src/show.c docs/gnuplot.doc:
	Remove the distinction between "coordinate format echoed to the screen
	during mousing" and "coordinate format saved to the clipboard on click".
	This removes the default bindings for hotkeys 3 and 4.

2014-04-28  Shigeharu Takeno  <shige@iee.niit.ac.jp>

	* docs/gnuplot-ja.doc term-ja.diff:  Sync translation to version 1.882
	* docs/gnuplot.doc: typos

2014-04-28  Ethan A Merritt  <merritt@u.washington.edu>

	* src/graphics.c src/graph3d.c src/save.c src/show.c: Use named
	values LAYER_{BEHIND|BACK|FRONT} rather than magic numbers.

	* docs/gnuplot.doc: Add a section documenting the use of layers.

2014-04-27  Dima Kogan  <dima@secretsauce.net>

	* src/gplt_x11.c: Fix off-by-one error in selection string.
	Allow clipboard contents to be retrieved more than once.

2014-04-27  Ethan A Merritt  <merritt@u.washington.edu>

	* src/graphics.c (plot_steps): Avoid overflow in clipping code.
	==> Reverted in favor of fixing the clipping code itself.

	* src/gadgets.c (clip_line): It is not safe to use (A*B >= 0) as a
	substitute for the test (sign(A) != sign(B)).
	It fails when A and B are integers and their product overflows.
	Bugs #1390, #1392	See also Bug #1358

	* src/stdfn.h: Define a sgn() function.

	* src/graphics.c: Use sgn() function to define samesign().

	* src/mouse.c: No longer need a local definition of sgn().

2014-04-26  Dima Kogan  <dima@secretsauce.net>

	* src/mouse.c (do_zoom rescale_around_mouse):  Handle various conditions
	that caused zooming around the current mouse position to fail.
	Bug #1380
	[REVERTED 2013-05-08 because it broke normal zoom]

2014-04-25  Ethan A Merritt  <merritt@u.washington.edu>

	* src/misc.c (lp_parse):  Disallow defining "set lt N lt M".
	This used to mean "define effective linetype N to be the hidden device
	specific linetype M", except that in other contexts it meant "use 
	effective linetype M rather than effective linetype N". Version 5
	distinguishes between color and dashpatten, so require an explicit 
	command to set one or both rather than an ambiguous old-style request.

	* src/save.c (save_pm3dcolor save_linetype):  Save special linetypes
	by keyword rather than a magic number (e.g. lt bgnd rather than -3).

2014-04-24  Ethan A Merritt  <merritt@u.washington.edu>

	* src/gp_types.h src/misc.c (lp_parse) src/misc.h src/plot2d.c
	src/plot3d.c src/set.c:  Revise the parameters passed to lp_parse() so
	that the legal options can vary depending on the identity of the caller.

	* src/term.c (test_term): Reset to default font after Bold/Italic test.
	Bug #1387

2014-04-24  Dima Kogan  <dima@secretsauce.net>

	* src/mouse.c (do_zoom_scroll_up):  Fix typo that causes incorrect
	manipulation of y2 axis scale during zoom.
	Bug (Patch #647)

2014-04-23  Ethan A Merritt  <merritt@u.washington.edu>

	* src/command.c src/graph3d.* src/set.c src/show.c src/save.c
	docs/gnuplot.doc:  Introduce a scale parameter "set view map {scale}"
	and set the default size of a plot in this mode to approximately the
	same as a default 2D plot.

	* src/command.c (replotrequest):  It's now OK to have a range in a
	replot command, since it can be applied to the new plot piece only.

	* src/datafile.c (df_readascii):  If a read request returns a string
	rather than a numerical value, nevertheless fill in the numerical 
	value as NaN.  This is better than leaving some random garbage there
	(in practice probably some earlier data value).
	Bugfix.

2014-04-21  Ethan A Merritt  <merritt@u.washington.edu>

	* term/canvas.trm: Support for custom dashtypes.

2014-04-20  Jérôme Lodewyck  <lodewyck@users.sourceforge.net>

	* src/qtterminal/po/*.ts: Update translations.

	* src/qtterminal/qt_conversion.cpp: Add new encoding types.

	* src/qtterminal/QtGnuplotEvent.* src/qtterminal/QtGnuplotWindow.cpp
	src/qtterminal/qt_term.cpp src/wxterminal/wxt_gui.cpp
	src/wxterminal/wxt_term.h term/qt.trm term/wxt.trm: new terminal option
	"position" that specifies the initial position of the plot window.
	Applies to Qt and wxt terminals. Feature request #386.

2014-04-19  Ethan A Merritt  <merritt@u.washington.edu>

	* src/command.c (test_command):  When "test" is issued before any plot
	command, suppress error messages if the window is resized.

	* term/PostScript/prologue.ps term/PostScript/prologues.h:
	Update PostScript prolog for version 5 and regenerate headers.

	* term/post.trm:
	Support for custom dashtypes in PostScript output.

2014-04-18  Ethan A Merritt  <merritt@u.washington.edu>

	* term/svg.trm (set_dashtype):  Fix potential buffer overrun;

	* src/misc.c (parse_dashtype):  A custom pattern must contain an even
	number of entries.

	* demo/dashtypes.dem demo/all.dem:  New dashtype demo.

	* src/qtterminal/QtGnuplotEvent.h src/qtterminal/QtGnuplotScene.cpp
	src/qtterminal/qt_term.cpp src/qtterminal/qt_term.h term/qt.trm:
	Support for custom dashtypes and dashlength in qt terminal.
	Change implementation of "lt nodraw" from background color to NoPen.

	* src/term.c (enhanced_recursion):  Consume only a single space following
	the font name in an enhanced text string "{/Fontname      text}".

	* docs/gnuplot.doc:  Initial documentation for `set dashtype` and
	dash properties in version 5.

2014-04-17  Ethan A Merritt  <merritt@u.washington.edu>

	* src/misc.c (parse_dashtype) src/save.c (save_dashtype) src/term_api.h
	src/term.c (term_apply_lp_properties) demo/dashcolor.dem: 
	Fix some glitches found while testing custom dashtypes.

	* src/term.c (test_term): Exercise bold/italic.  Longer line samples to
	make it easier to distinguish dashtypes.  Minor layout changes.

	* term/svg.trm:  Support for custom dashtypes.

	* src/wxterminal/gp_cairo.* src/wxterminal/wxt_gui.*
	src/wxterminal/wxt_term.h term/cairo.trm term/wxt.trm:
	Support for custom dashtype in all cairo-based terminals.

2014-04-14  Dima Kogan  <dima@secretsauce.net>

	* src/mouse.c (event_buttonpress):  Flip direction of horizontal 
	scrolling to match the convention used by vertical scrolling.

2014-04-14  Ethan A Merritt  <merritt@u.washington.edu>

	* configure.in (AC_FUNC_FSEEKO) src/datafile.h: LFS support part 2.
	If possible, use fseeko/ftello to navigate input data files.

2014-04-13  Ethan A Merritt  <merritt@u.washington.edu>

	* configure.in (AC_CHECK_TYPES([off_t])) src/syscfg.h (#define off_t)
	src/binary.c src/datafile.c src/datafile.h:  Change the declared type
	of all variables contributing to calculation of file offsets from (int)
	to (off_t).  This is sufficient to allow seeking in files > 2GB on 64bit
	platforms.  It may also allow LFS support on some 32bit platforms if
	compiled with -D_FILE_OFFSET_BITS=64 but in general it will also be
	necessary to replace fseek/ftell with fseeko/ftello (32bit linux) or
	_fseeki64/_ftelli64 (MSVC).

2014-04-11  Ethan A Merritt  <merritt@u.washington.edu>

	* src/datafile.c (df_binary_details[]): Handle int64 and uint64 types 
	even if current platform has sizeof(long) = 4.
	Bugfix

2014-04-08  Ethan A Merritt  <merritt@u.washington.edu>

	* src/save.c (save_linetype) src/misc.c (lp_parse)
	src/graphics.c (plot_lines) src/graph3d.c (do_3dplot plot3d_lines)
	src/boundary.c (do_key_sample):

	New linetype keyword "nodraw" maps to existing internal value LT_NODRAW.
	Apply this in the graphics layer rather than the terminal layer in order
	to distinguish between line properties and point properties.
	I.e. this draws blue points but no lines:
	  plot $FOO with linespoints lt nodraw pointtype 6 lc rgb "blue"

	* src/term.c (term_apply_lp_properties):  Distinguish between l_type
	values that really indicate a linetype (e.g. LT_NODRAW, LT_AXIS) and
	those which indicate a dash pattern. Send the former directly to
	term->linetype(). Send the latter to term->dashtype(), which may itself
	call term->linetype() if there is no private implementation of dashes.

2014-04-07  Ethan A Merritt  <merritt@u.washington.edu>

	* src/term.c (null_dashtype):  Ignore custom dashtypes. Pass through
	dashtypes > 0 to term->linetype(). Treat negative dashtypes as LT_BLACK.
	This should allow terminals without a private dashtype implementation to
	continue working as they did before (pre-version 5).

	* src/plot2d.c (eval_plots):  Don't call lp_parse if all we want is
	a fill color.

	* src/boundary.c (do_key_sample) src/graphics.c (plot_boxes plot_c_bars):
	Funnel requests for linetype changes through term_apply_lp_properties().

	* demo/all.dem:  Add varcolor.dem to the test set.

2014-04-06  Christoph Bersch <usenet@bersch.net>

	* src/graphics.c (fill_between):  It is no longer necessary to clip in
	this routine because the component quadrilaterals will be clipped later.

2014-04-05  Ethan A Merritt  <merritt@u.washington.edu>

	* src/set.c (set_table): Name leak.

2014-04-05  Bastian Maerkisch  <bmaerkisch@web.de>

	* demo/vector.dem docs/gnuplot.doc src/command.c src/datablock.c
	src/datablock.h src/gadgets.c src/gadgets.h src/plot2d.c src/set.c
	src/tabulate.c src/tabulate.h src/unset.c src/util.c src/util.h:
	'set table $datablock' redirects table output to a named data block.
	Patch #662

2014-04-04  Ethan A Merritt  <merritt@u.washington.edu>

	* src/term.c (load_linetype):  If a line style is based on a lt < 0
	(LT_NODRAW, LT_BACKGROUND, LT_BLACK, etc), take only the line color.
	FIXME: LT_AXIS should also take the dash pattern but that mechanism
	isn't fully in place yet.
	Bug #1369

	* src/util.c (value_to_str):  Fix error in buffer length accounting.
	Bug #1372

	* src/alloc.c src/alloc.h src/bf_test.c: The conditional code in
	alloc.c for tracking memory allocation/free has bit-rotted to a point
	where the program segfaults on entry if it is enabled.  Since this sort
	of accounting is now better done using valgrind it is not worth fixing
	the old code.  Delete it.

	* src/alloc.c: Although freeing old help messages may free some memory,
	entangling the help system with every memory allocation seems excessive.
	If we're about to run out of memory there are deeper problems than old
	help messages.

	* configure.in: Remove EXPERIMENTAL warning from older options.

	* src/save.c src/set.c src/term.c:  Code style / whitespace cleanup

	* src/set.c (set_dashtype) src/misc.c (parse_dashtype):  Add comments.
	Truncate dashtype string to match size of stored pattern array.

2014-04-03  Bastian Maerkisch  <bmaerkisch@web.de>

	* src/fit.h (error_ex):  Add noreturn attribute to avoid compiler
	warnings.

	* src/fit.c:  Correct test for invalid covariance matrix.

	* src/util.h (int_error, os_error, graph_error):  noreturn attribute
	for MSVC.

	* src/wgdiplus.cpp (drawgraph_gdiplus) src/win/wgraph.c (drawgraph):
	Test if command list is available.

	* src/win.trm (WIN_update_options) src/win/wmenu.c:  Incomplete format
	strings.

2014-04-02  Ethan A Merritt  <merritt@u.washington.edu>

	* src/misc.c demo/heatmaps.dem docs/gnuplot.doc:
	Document and add a demo for "with image pixels" (formerly "failsafe").

	* src/color.c src/plot3d.c src/pm3d.c src/pm3d.h src/save.c src/set.c
	src/show.c src/tables.c src/tables.h src/term.c src/unset.c:
	Revise "set pm3d hidden3d <lt>" to match other places where you can
	specify line properties.
	- Full syntax is now "set hidden3d {no}border {line-properties}"
	- Individual line properties can be overridden in the plot command
	- Old sytax is accepted as a synonym for "set hidden3d border lc <lt>"

	* demo/transparent_solids.dem docs/gnuplot.doc:
	Update documentation and demo to show new syntax

	* src/contour.c (end_crnt_cntr): Initialize blank label in new contour.

2014-04-01  Ethan A Merritt  <merritt@u.washington.edu>

	* src/command.c (test_palette_command):  Write the palette colors into
	a datablock $PALETTE rather than writing them as in-line data in a temp
	file.  Simplify the internal command sequence that generates the test
	output.  TODO: Move the command sequence into a datablock as well.

2014-03-30  Bastian Maerkisch  <bmaerkisch@web.de>

	* term/caca.trm:  Change codepage from 932 to 437 on Japanese Windows.
	Apparently this fixes display problems, although libcaca uses unicode
	functions to write to screen.
	Bug #1361

	* src/eval.c src/internal.c|h src/parse.c:  Implement f_words instead
	of treating it as a special case in the parser.

	* src/command.c src/command.h src/plot.c src/stdfn.h src/syscfg.h
	src/win/wgraph.c src/win/winmain.c src/win/wprinter.c:  Include file
	cleanup.

	* src/win/screenbuf.c:  Avoid crashes on memory allocation errors.

	* src/makefile.all src/makefile.awc:  Recreate to include multiplot.c.

	* demo/lines_arrows.dem:  UTF-8 encoding.

	* config/mingw/Makefile:  Fix non-numeric version number due to
	patchlevel "alpha".

2014-03-29  Christoph Bersch <usenet@bersch.net>

	* src/multiplot.h src/multiplot.c demo/layout.dem docs/gnuplot.doc:
	New autolayout options for multiplot:
	  set multiplot layout margins LEFT, RIGHT, BOTTOM, TOP spacing GAP
	Patch #611

2014-03-29  Ethan A Merritt  <merritt@u.washington.edu>

	* src/term.c (multiplot_current_panel) term/svg.trm src/term_api.h:
	Hide internal data structure behind an access function.

	* src/multiplot.h src/multiplot.c src/term.c src/term_api.h
	src/Makefile.am:  Move multiplot layout code from term.c into a new
	file multiplot.c.

2014-03-27  Shigeharu Takeno  <shige@iee.niit.ac.jp>

	* docs/gnuplot-ja.doc term-ja.diff:  Sync translation to version 1.872
	* docs/gnuplot.doc: typos

2014-03-27  Dima Kogan  <dima@secretsauce.net>

	* docs/gnuplot.doc

2014-03-27  Ethan A Merritt  <merritt@u.washington.edu>

	* src/qtterminal/qt_term.cpp (qt_text_wrapper):
	Prevent segfault on "set term qt; set multiplot; quit".

2014-03-24  Ethan A Merritt  <merritt@u.washington.edu>

	* src/graphics.c (place_objects do_rectangle): When fillcolor for an
	objects is given as a linecolor it should be interpreted as referring
	to a current linetype.

	* src/command.c: clean up to remove compiler warnings.

	* term/emf.trm:  Bold/Italic markup in enhanced text mode

	* src/boundary.c (do_key_sample_point) demo/lines_arrows.dem:
	Apply textcolor to character point type in key sample.

2014-03-23  Bastian Maerkisch  <bmaerkisch@web.de>

	* src/command.c src/command.h src/datablock.c src/datablock.h 
	src/set.c src/show.c src/unset.c docs/gnuplot.doc demo/ellipse.dem
	demo/fitmulti.dem demo/gen-random.inc demo/rugplot.dem:
	Implement 'set print $datablock' which redirects 'print' output to
	an in-memory datablock.
	Patch #662

	* src/setshow.h src/show.c src/util.c src/util.h:  Factor out new
	routine value_to_str() which returns a string representation of a
	struct value from disp_value().

	* demo/tango_colors.dem:  set linetype cycle.

	* docs/plotstyles.gnu:  Encoding is utf8.

	* src/win/wcommon.h src/win/wgraph.c:  Fix const-ness for
	enhanced_recursion().

	* src/util.c (gprintf):  Skip leading zeroes of negative exponents.

2014-03-22  Ethan A Merritt  <merritt@u.washington.edu>

	* docs/gnuplot.doc docs/doc2tex.c docs/titlepag.tex:
	Update documentation New Features, Changes for version 5.

	* src/plot.c (init_session) src/set.c (set_colorsequence) src/setshow.h
	src/show.c src/tables.c src/tables.h src/term_api.h:
	New command:
		set colorsequence {default | classic | podo}
	Built-in command to select one of the linetype color sequences provided
	in .../share.  The default sequence is visibly changed from the old
	red/green/blue ugliness, which should make users immediately aware that
	the colors can be customized.

	* src/set.c (set_linestyle):  Dash type of newly created linetype should
	by solid unless otherwise specified.

	* src/misc.c:  Allow `black` as a colorspec or linetype, analogous to
	`bgnd`.

2014-03-21  Ethan A Merritt  <merritt@u.washington.edu>

	* src/parse.c (check_for_iteration next_iteration):
	Replace overly clever checks for end condition already satisfied with
	one that doesn't fail due to overflow of integer multiplication.
	Bug #1358

	* src/term.c (enhanced_recursion) term/post.trm(ENHPS_OPEN):
	The bold/italic support code has revealed a problem with PostScript
	output. The core code assumes that passing a blank font name means
	"keep the previous font" or at worst "use the default font". post.trm
	failed to do this for some command sequences. Fix it in two places.
	In term.c pass the previous font if we already know it.
	In post.trm fall back to the default rather than place a blank
	string in the ouput *.ps file.
	Bug #1359

2014-03-20  Bastian Maerkisch  <bmaerkisch@web.de>

	* src/set.c src/term.c src/term_api.h src/util.c src/win/wgraph.c
	src/wxterminal/gp_cairo.c term/aquaterm.trm term/pdf.trm term/post.trm
	term/pslatex.trm term/svg.trm:  Add support for codepage 1252, the
	standard Western European encoding on Windows.

	* src/set.c:  "set encoding locale" only handles utf8 and sjis. Extend
	this to all supported encodings on Windows, probably the only platform
	where this is still relevant.
	Bug #1270

	* demo/dashcolor.dem:  UTF-8 encoding.

	* src/fit.c (show_results):  Do not try to print parameter errors if
	the covariance matrix is unavailable or invalid.

2014-03-20  Thomas Henlich  <thenlich@users.sourceforge.net>

	* term/PostScript/cp1252.ps:  CP1252 encoding support for PostScript
	terminal. Based on Patch #341, but with non-standard characters
	removed.

2014-03-20  Ethan A Merritt  <merritt@u.washington.edu>

	* term/svg.trm:  svg was losing the current linetype (i.e. dash type)
	between drawing the key sample and drawing the main plot.

2014-03-19  Bastian Maerkisch  <bmaerkisch@web.de>

	* src/stdfn.c src/stdfn.h src/internal.c src/win/winmain.c
	src/win/wtext.h config/config.nt:  Standard compliant replacements
	of snprintf() and vsnprintf() for MSVC.  Note that _snprintf does set
	errno=ERANGE if the destination buffer is too small.

2014-03-19  Ethan A Merritt  <merritt@u.washington.edu>

	* src/plot2d.c: Fix parsing error for "with lp pt 'X', ..."

	* src/boundary.c src/boundary.h src/graphics.c:  Refactor code that
	draws key samples for point plots.

	* configure.in term/gpic.trm src/term.h:
	Add configuration option --with-gpic

	* configure.in src/term.h:  FrameMaker now allows import of svg, so the
	utility of the ancient mif v3 support is dubious. Disable by default.
	Add configuration option --with-mif

	* demo/lines_arrows.dem demo/stringvar.dem demo/html/Makefile
	demo/html/index.* demo/html/webify.pl: Update demos for version 5.

2014-03-19  Hans-Bernhard Broeker  <broeker@physik.rwth-aachen.de>

	* src/misc.c (parse_dashtype): Avoid warning about assignment used
	as a condition value.  Some reindentation.

2014-03-19  Jérôme Lodewyck  <lodewyck@users.sourceforge.net>

	* src/qtterminal/QtGnuplotScene.cpp
	src/qtterminal/QtGnuplotItems.h src/qtterminal/qt_term.cpp:
	Implement image clipping for the Qt terminal.  Fix issue with
	unsigned variables in terminal coordinates.  Bug #1349

2014-03-18  Peter Juhasz  <juhaszp@users.sourceforge.net>

	* src/term.c src/set.c: Fix leaks and invalid reads associated
	with dashtype strings.

2014-03-18  Ethan A Merritt  <merritt@u.washington.edu>

	* src/wxterminal/gp_cairo.c:  PANGO_WEIGHT_NORMAL is not the same as 0.

	* term/x11.trm:  Make the "persist" flag local to x11 and remember
	what is was the last time we set the terminal to x11.
	Bug #1348

2014-03-18  Jérôme Lodewyck  <lodewyck@users.sourceforge.net>

	* src/qtterminal/QtGnuplotEvent.* src/qtterminal/QtGnuplotWindow.cpp
	src/qtterminal/QtGnuplotWidget.cpp src/qtterminal/QtGnuplotScene.cpp:
	Block events that come from inactive plot widgets.

2014-03-17  Peter Juhasz  <juhaszp@users.sourceforge.net>

	* src/term_api.h src/misc.c src/misc.h src/save.c src/save.h:
	Parse and save dashtype specification in the form of "-_. " or 
	"(1.0, 0.3, 1.5, 2.0)". In the latter form alternating numbers 
	specify dash lengths and spaces between them.

	* src/gadgets.c src/gadgets.h:
	Added new type custom_dashtype_def and global variable 
	first_custom_dashtype in preparation of new "set dashtype" command.

	* src/gadgets.h src/misc.c src/set.c src/setshow.h src/show.c
	src/tables.c src/tables.h src/term_api.h src/unset.c:
	New commands 'set|show|unset dashtype <N> <dashtype_spec>' to
	specify permanent, user-defined dashtypes.

	* src/termp_api.h src/term.c src/misc.c: lp_parse() loads dashtype
	from the list of user-defined dashtypes if the absence of an explicit
	definition.

2014-03-16  Ethan A Merritt  <merritt@u.washington.edu>

	* src/axis.c src/axis.h src/gadgets.c src/gadgets.h src/graphics.c
	src/misc.c src/plot2d.c src/set.c src/term_api.h docs/gnuplot.doc
	docs/plotstyles.gnu:
	New point type that consists of a single character (possibly a
	multibyte character).  This is particularly useful as
	    plot $FOO with linespoints pointtype "#" pointinterval -1
	where # is the desired character drawn at each point.

2014-03-16  Peter Juhasz  <juhaszp@users.sourceforge.net>

	* src/term_api.h src/term.c src/misc.c src/plot2d.c src/plot2d.c
	src/set.c src/save.c src/graphics.c src/gadgets.c src/gadgets.h:
	Introduce new "dashtype" line property that controls dot/dash 
	pattern independently. Allow it in "set|show linetype|linestyle",
	"plot", etc., display it in "save".
	Only numeric "dashtype N" supported for now. 
	New function dashtype() added to termentry struct, but none of the
	terminals use it yet.

	* src/set.c (set_linestyle): Set pm3d_color.type to TC_LT and
	pm3d_color.lt to line number by default. This is necessary because
	since the use_palette flag was removed, pm3d_color information is
	used everywhere, yet, it was not set properly. This resulted,
	among others, a broken "show linetype" output with empty "linecolor"
	spec.

2014-03-16  Hans-Bernhard Broeker  <broeker@physik.rwth-aachen.de>

	* src/axis.h (en_minitics_status): Give enum a typedef name, too.
	(axis): Use new type for element of AXIS struct, instead of int.

	* src/axis.c (gen_tics): Simplify by using local OO-like "this"
	pointer variable.  Remove pointless local variable "minifreq".
	Treat "minitics" variable as a proper enum everywhere (no
	set/compare to zero).

2014-03-15  Ethan A Merritt  <merritt@u.washington.edu>

	* configure.in VERSION PATCHLEVEL share/gnuplotrc src/version.c
	demo/html/index.canvas demo/html/index.save demo/html/index.svg
	docs/doc2texi.el docs/gnuplot.doc docs/titlepag.tex:

	>>>>> Bump version to 5.0 alpha <<<<<

>>> Earlier entries are in ChangeLog.4
