Documentation is part of the gnuplot source code, available at:
- https://sourceforge.net/p/gnuplot/gnuplot-main/ci/master/tree/docs/
This can be redistributed, according the the Copyright (emphasis mine):
> * Copyright 1986 - 1993, 1998, 2004 Thomas Williams, Colin Kelley
> *
> * Permission to use, copy, and distribute this software **and its**
> * **documentation** for any purpose with or without fee is hereby granted,
> * provided that the above copyright notice appear in all copies and
> * that both that copyright notice and this permission notice appear
> * in supporting documentation.
Full copyright notice here:
https://sourceforge.net/p/gnuplot/gnuplot-main/ci/master/tree/Copyright
The term “gnuplot license” is not very widespread but brings satisfying
results on search engines (including on wikipedia), so I took the
liberty to add a link to the copyright file, taken from the “Gnuplot's
copyright” link on the gnuplot home page, http://gnuplot.info.
Here is how to build the gnuplot docs to parse them:
mkdir gnuplot-src gnuplot-conf $DEVDOCS_ROOT/docs/gnuplot
git clone -b 5.2.7 --depth 1 https://git.code.sf.net/p/gnuplot/gnuplot-main ./gnuplot-src
cd gnuplot-src/
./prepare
cd ../gnuplot-conf
../gnuplot-src/configure
make -C docs nofigures.tex
latex2html -html 5.0,math -split 4 -link 8 -long_titles 5 -dir $DEVDOCS_ROOT/docs/gnuplot -ascii_mode docs/nofigures.tex