TODO

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[========= List of things to be done.  Plans, ideas, whatever... ========]
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COMMANDS:
=========


DOCUMENTATION:
==============

 -- Improve the documentation on fonts
 -- More figures in the manual
 -- We no longer have a working build path for HTML documentation.
    Is there a suitable replacement?

PLATFORMS:
==========

 -- Configuration/installation on OSX remains problematic

 -- autoconf handling of TBOOLEAN on Solaris also remains problematic.
    The definition apparently needs to be different for C and C++.

 -- update wgnuplot menus for Windows

TERMINALS, GENERAL COMMENTS:
============================

-- verify that terminals don't reset options (I've checked a lot, but 
should be tested again)

GNUPLOT TOOLS LIBRARY:
======================

Make a library (e.g. usr/local/gnuplot/scripts/, .../gnuplot/bin) of 
(a) gnuplot scripts, and (b) shell scripts relevant for gnuplot:

-- enclose script "gpsavediff" that diff's output of gnuplot's "save" command 
and default setup after "reset" 

-- move pm3d/contrib/* files into the proposed gnuplot library, then remove
pm3d/contrib and pm3d/ from cvs

I.e., the last point is the main question: where to put pm3d/contrib/* files?

Or put them to gnuplot web page?


INSTALLATION --- LINUX:
=======================

-- add .spec file and a 'make' target to create RPM file?
   [HBB: no.]
-- the installation paths for TeX-related files are a mess


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Note: use
	www.sourceforge.net/projects/gnuplot
=> "Feature request" for feature requests.


Projects, in no particular order:

- revise border command to use keywords
- put minor tics into demo file

longer term

- break it into four layers:
  : low level graphics  (some of term.c)
  : plotting code, reading the setshow.h global variables
  : parsing code - read a string, and parse and execute it
  : front end, interact with terminal / gui
  basically, gplotlib is layer 2, and the traditional gnuplot is
  layer 4, which is little more than a small client of layer 3.
  Terminal option lines are table driven,
  so that even though the options are defined by layer 1, the
  actual parsing is implemented in level 3

Lars' list

- provide library of replacement functions instead of stdfn.c
- completely rewrite the parser. Use yacc/bison if possible.
- maybe rewrite the scanner in lex? The benefits are not so obvious,
  because the current scanner is extremely simple. This is probably
  only worthwhile if the parser is rewritten at the same time.
- maybe use PD hash code for table-lookup (SNIPPETS code). Tables for
  builtin and user functions, variables, commands. What else? aliases
- standardise float/double comparisons around the suggestion in the
  comp.lang.c FAQ (What's a good way to check for "close enough"
  floating-point equality?) and symbolic constants from standard header files.
  LOADS of errors throughout the code, especially in graphics.c
- autogenerate term.h from config file in text format and/or configure?
- write or organise a portable version of snprintf(3) with a copyright
  compatible with the gnuplot copyright (ie. no GPL) (Apache?)
- add more maintainer checks (eg. file permissions)
- better documentation format; get rid of the doc2xxx utils
  [SGML. SGML. SGML]
- tilde and variable expansion to be done by 
  gp_fopen() - to be implemented
- fix bug which prints "DI,1DI,0" in the upper left corner of the plot when
  in pcl5 mode and printing to an HP Laserjet 4+ (J. Breeding, bug-gnuplot)
  [HBB: reason known, but proper workaround path unclear]

HBB:

[Optional:] See if 16-bit compilations can be made to work again.

Ethan's List (2012):

- the qt terminal should support OpenGL as a back-end rendering path
- rewrite javascript support files for the canvas terminal to use
  browser's font support.  Maintain more per-plot context, e.g. zoom state.
- isosurfaces (3D contour of 4D data)
- more demos and more comprehensible descriptions in the user manual
- support mousing in multiplot output, at least for selected terminals
- add additional tic levels, possibly to appear only when zoomed

- Changes for 5.0 (syntax or behavior is not 100% backward compatible)
  + separate out the handling of junk, NaN, Inf, and missing data entries
  + revise the keywords for matrix handling so that the binary and ascii
    versions are consistent
  + apply in-line plot ranges only to the immediately following plot clause