Why is csh `restricted'?

Warren Toomey wkt at henry.cs.adfa.edu.au
Tue Jan 5 14:42:15 AEST 1999

I've got a questions that's been niggling me, and perhaps someone might
be able to answer it.

The csh was first released in 2bsd, and came with the copyright notice:

/* Copyright (c) 1979 Regents of the University of California */
 * C Shell
 * Bill Joy, UC Berkeley
 * October, 1978

But my memory tells me that, back in the late 80s, people were saying
that the sources to csh were not freely available. And in the tcsh FAQ
(taken from tcsh version 6.00), I see:

	4.  Where can I get csh sources? 

	Csh sources are not public domain. If you do not have an AT&T V3.2
	source licence or better, you are stuck.

So, can anybody tell me if, when and how did the sources to csh become
restricted, or if not, how this urban legend arose??

Many thanks in advance!


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