[comp.sources.d] yacc, again

ddl@husc6.UUCP (02/11/87)

	I perceive that my comments on yacc are being misinterpreted.  I
had hoped to encourage people to think about the logical problems.  I had
hoped that someone with legal information might comment on the legal aspects.
(I don't think anyone has.) I did not wish to engage in a discussion of
the immorality of stealing software.  This is a clearly important, but
unfortunately separate, problem.  I also think that this is a fairly safe
specific issue to discuss (as compared to xmail) because of the pre-existing
commercial sales of (presumably the same) yacc.
	Maybe a different example would help to show what I am worried about.
A while ago, a supposedly public-domain make was posted to mod.sources.  I
might want to use this program.  It would appear that I should first compare
it to AT&T make to avoid legal liability.  This can be done since we have UNIX
source, but might be hard for someone who doesn't.  Now, could someone at
Microsoft please check to be sure that the supposedly public-domain make
wasn't derived from proprietary Microsoft sources?  Could someone at
Apollo also check their sources?  Could anyone who knows of any other
proprietary versions of make please ask the respective owners to compare
their sources to the supposedly public-domain ones?  Could someone volunteer
to collect the responses and provide a definitive answer?
	Am I being silly?  I don't know.  There has to be a place to draw the
line.  Without that line, I don't quite see how anything can be public-domain.

					Dan Lanciani
					ddl@harvard.*

ddl@husc6.UUCP (02/13/87)

	Before someone else jumps on it, I should mention that I have
been (incorrectly) using the word proprietary in what I thought was
the current context:  something protected only by trade secret and
non-disclosure agreements.  None of the arguments I made apply (or were
meant to apply) to patents and copyrights which are still proprietary
in the sense of ownership.  So please substitute trade-secret for
proprietary.  Patents can't create the problem I'm worried about because
you can send for a copy to verify ownership.

					Dan Lanciani
					ddl@harvard.*