tcsh fix

[Kevin Lyons]

David O'Brien wrote:

> 
> What is a pure 'csh'??  Please answer in detail.  Have you ever looked at
> the source code for 4.3BSD 'csh'?  What about 'tcsh' source code?  Hint,
> Christos Zoulas had at CSRG login and was maintaining and enhancing BSD
> 'csh'.  The 4.4BSD 'csh' was Zoulas's work.  'tcsh' is simply the
> continued evolution of BSD 'csh'.

Presumably pure csh is the last stable release of csh before tcsh came 
along.  Openbsd, netbsd, sun and sgi all seem to have been able to 
settle on a csh.