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- To: GSB at MIT-MC
- From: JONL at MIT-MC (Jon L White)
- Date: Sat, 20 Oct 79 16:46:00 GMT
- Cc: (BUG LISP) at MIT-MC, (BUG LISPM) at MIT-MC, BSG at MIT-MC
- Original-date: 20 OCT 1979 1246-EDT
Date: 18 October 1979 21:34-EDT
From: Glenn S. Burke <GSB at MIT-ML>
Subject: format of (status features)
The maclisp manual claims that (car (last (status features))) is
the implementation name.
Actually, it was meant to mean "name of operating system type", such
as TOPS-10, TOPS-20, TENEX, ITS, MULTICS . . .
I have also been under the impression
that (cadr (reverse (status features))) was itself significant, ie
the "machine identifier" or somesuch (eg "ML"), but i don't have
an old manual handy to see if it actually claims this.
This is not really a "feature" - it was used in the days when the
various ITS machines had to have different assemblies of LISP. But
now, the same code is used on all three systems (yes, Virginia, we
don't make use of the fact that the KL10 has . . .)
I see however
that multics maclisp now has "Maclisp" as the last element, and the
lisp machine uses neither of those last elements. It would be kind
of nice if these items could be found by some means other than
This might seem a bug, if we would expect the last element to be the
supporting operating system name.