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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: Potential copyright problem in EIEIO improvement
Date: Wed, 30 Dec 2009 00:42:25 -0500
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To: Jan Moringen <jan.moringen@uni-bielefeld.de>
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	(message from Jan Moringen on Wed, 30 Dec 2009 03:49:00 +0100)
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> Date: Wed, 30 Dec 2009 03:49:00 +0100
> From: Jan Moringen <jan.moringen@uni-bielefeld.de>
> 
> Basically, I implemented an algorithm (c3 linearization) which is
> described in an academic paper (see below). My implementation is very
> close to the implementation presented in the paper (although that one is
> written in Dylan).
> [...]
> Any thoughts on this issue would be greatly appreciated. I can try to
> provide additional information if required.

To my non-lawyer's eyes, the two implementations are so different in
form that they only share the same idea.  And ideas are not
copyrightable, AFAIK.

But IANAL.