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From: Kilgallen@SpamCop.net (Larry Kilgallen)
Newsgroups: comp.lang.ada
Subject: Re: Can I treat Current_Output as a file of bytes?
Date: 9 Nov 2002 08:36:02 -0600
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In article <slrnasqa7u.qs.randhol+news@kiuk0152.chembio.ntnu.no>, Preben Randhol <randhol+news@pvv.org> writes:
> Marin David Condic wrote:
>> already been done, to begin with, but if you insist, why Unix?) If someone
>> wants to rewrite some OS in Ada, then VMS would make an excellent candidate!
> 
> http://www.openvms.org/ ?
> 
> I don't want a rewrite of Linux in Ada. I would want something better.
> It would be nice *if* the OS is intended for desktop, to be able to run
> the applications of Linux. If it is a server OS, then it would be better
> if it was made to run forever and withstand cracking attempts. Not that
> the two are mutually exclusive.

Although I am one of the world's biggest VMS fans, let me point out
that there were many problems when they rewrote the VMSmail program
from Bliss to C.  The bulk of the problems were not caused by the
nature of the C programming language, but rather by the underspecification
of VMSmail.  There were many desireable features of VMSmail in heavy
use by customers that were not apparent from the documentation or the
comments.  They did not work in the initial C implementation, and
much to the shock of those who had done it there were many complaints.

Blanket recoding into another language can be quite harmful.

But I would like to see HP's VMS Development group use _more_ Ada
as they come upon occasions where they need to reimplement anyway.