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From: Bjorn.Victor@docs.uu.se (Bjorn Victor)
Newsgroups: comp.sys.ti.explorer
Subject: Re: TI lisp and "IF"
Message-ID: <9104091238.AA00365@mizar.DoCS.UU.SE>
Date: 9 Apr 91 12:38:43 GMT
References: <2880116725-2159710@KSL-Mac-62>
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  >Sender: acuff@ksl-mac-62.stanford.edu
  >Date: Mon, 8 Apr 91  09:25:25 PDT
  >Reply-To: acuff@sumex-aim.stanford.edu
  >From: Richard Acuff <acuff@sumex-aim.stanford.edu>
  >
  >> Used to be, when I wrote a conditional using IF with a macro as the
  >> predicate, everything worked just fine.  I just installed the latest
  >> version of TI lisp on my MX (lisp version 6.1) and now I get a break with
  >> the message "Attempt to evaluate [my macro] as a function".  ANyone know if
  >> this is the correct behavior for IF and/or why this is now different?
  >
  >I think I'm using the latest versions and I don't see this problem.  Do you
  >have demonstration code?
  >
  >	-- Rich

My guess is that Tom Bonura is using the macro before its definition.
This is a classic thing, and Tom should move the macro definition to
a place before its use, or change his DEFSYSTEM so the file using the
macro depends (at both compile- and load-time) on the file defining it.

I still don't understand why compilers can't be two-pass, to handle
these things.

-- Bjorn Victor			Bjorn.Victor@DoCS.UU.SE
Dept. of Computer Systems	tel: +46 18183169; fax: +46 18550225
Uppsala University, Sweden	"I'd rather hack a Lisp Machine!"