[R] licensing of R packages

[Peter Dalgaard]

Berwin A Turlach wrote:

>  IIRC, it was exactly
> this clause, that credits have to be kept, that made the original BSD
> license a "GPL-incompatible Free Software License".

I think not. Rather it was the "advertising clause" that

3. All advertising materials mentioning features or use of this software
   must display the following acknowledgement:
     This product includes software developed by the University of
     California, Berkeley and its contributors.

This, if generalized to multiple contributors, could imply that a
full-page ad for an open-source product would be half-filled with
acknowledgements...

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