Marijn wrote at 09/30/2011 03:39 AM:
``keeping the C code that was ripped out of gnuplot.''
which would IIUC be a violation of gnuplot's license.
Below is the "Copyright" file from the version of "gnuplot" included in
Debian Stable.
I don't know what C code from "gnuplot" is being talked about, and I do
not see any in the Racket 5.1.3 source tree.
But it does look like "gnuplot" C code is legally a pain in the butt to
use, and that would be good reason for people to avoid using it in the
future.
Note: The "gnu" in "gnuplot" is misleading. It's decidedly not GNU
software, and has legal compatibility issues with GNU. There was a big
fuss about this a long time ago, probably before some of the programmers
on this email list were born.
/*[
* 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.
*
* Permission to modify the software is granted, but not the right to
* distribute the complete modified source code. Modifications are to
* be distributed as patches to the released version. Permission to
* distribute binaries produced by compiling modified sources is granted,
* provided you
* 1. distribute the corresponding source modifications from the
* released version in the form of a patch file along with the binaries,
* 2. add special version identification to distinguish your version
* in addition to the base release version number,
* 3. provide your name and address as the primary contact for the
* support of your modified version, and
* 4. retain our contact information in regard to use of the base
* software.
* Permission to distribute the released version of the source code along
* with corresponding source modifications in the form of a patch file is
* granted with same provisions 2 through 4 for binary distributions.
*
* This software is provided "as is" without express or implied warranty
* to the extent permitted by applicable law.
]*/
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