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- To: MOON at MIT-MC
- Subject: Re: Grindef
- From: GLS@MIT-AI
- Date: Tue ,31 Oct 79 04:23:04 EDT
CC: GLS at MIT-AI, (BUG LISPM) at MIT-AI
MOON@MIT-MC 10/31/79 11:16:17 Re: Grindef
GLS@MIT-AI 10/30/79 16:58:27
In system 20.2, with microcode 593, on LISP Machine Eight:
GRINDEF of no arguments is supposed to use the arguments last given it;
but it traps out with an error instead. This is a royal pain.
I never heard of this "feature" before. Is it really useful?
I suppose it could be put in....
Well, it has always worked that way on the PDP-10, and it
is incredibly useful when you are making iterated versions of
one function and constantly re-reading it. This I find
especially true when the function involved was generated by
three levels of hairy macro and has a very long (generated) name.
If I'm debugging the three levels of hairy macro, iterated
GRINDEF's are essential to figuring out what's going on.
(I was doing just this when I complained.)