On 27/04/2011 12:55 PM, Brett Smith wrote:
Hello,
I'm sending this to R-devel under the guideline that the ensuing
discussion would probably be unintelligible to people who aren't
programmers. If that's not right, I apologize.
<http://www.r-project.org/Licenses/> says in part: "Some files are
licensed under 'GPL (version 2 or later)', which includes GPL-3. See the
comments in the files to see if this applies." This implies that there
are files in R that do *not* have the "or later" language, and can only
be used under GPLv2.
I've done some initial searches for files in the R source code that
don't have the "or later" language, but haven't turned anything up yet.
If anybody knows of any off-hand and could point me to them, I'd
appreciate it.
Package rpart is GPL-2-only in R 2.13.0, but is more liberally licensed
in R-patched and R-devel. The survival package was GPL-2-only until R
2.12.1.
Duncan Murdoch
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