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- To: Richard Berman <berman@VAXA.ISI.EDU>
- Subject: ~% Directive
- From: "Scott E. Fahlman" <Fahlman@C.CS.CMU.EDU>
- Date: Tue, 19 May 1987 19:19:00 -0000
- Cc: common-lisp@SAIL.STANFORD.EDU
- In-reply-to: Msg of 19 May 1987 14:38-EDT from Richard Berman <berman at vaxa.isi.edu>
- Sender: FAHLMAN@C.CS.CMU.EDU
do you know what this should do?
(FORMAT NIL "~-1%")
1. "It is an error."
2. "Crank up the monitor's voltage and send a lethal blast of X-rays
into the face of the person issuing such a silly command."
Since not all machines can support solution 2, we should probably go
with 1, even though 2 is the more elegant and long-lasting solution.
But seriously, there seem to be a number of places in the format
directives where negative numbers would make no sense. I don't think
that all of these are explicitly flagged. This should probably be fixed
up in the standard, but until then it seems reasonable to assume
non-negative integers unless there's some obvious meaning for the