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Path: utzoo!linus!philabs!seismo!rlgvax!cvl!umcp-cs!liz
From: liz@umcp-cs.UUCP
Newsgroups: net.lang.lisp
Subject: Re: Franz Lisp Process Help??? - (nf)
Message-ID: <2730@umcp-cs.UUCP>
Date: Sun, 25-Sep-83 17:00:35 EDT
Article-I.D.: umcp-cs.2730
Posted: Sun Sep 25 17:00:35 1983
Date-Received: Tue, 27-Sep-83 01:17:58 EDT
References: <1140@ecn-ec.UUCP>
Organization: Univ. of Maryland, Computer Science Dept.
Lines: 23

The reason that
	(apply 'process (ncons (concat "/bin/echo " PlotDevice))) .

works and not:

	(process (ncons (concat "/bin/echo " PlotDevice)))  ?
or
	(process (concat "/bin/echo " PlotDevice))

is that process is an nlambda and does not eval its arguments.  To
set up pipes to your call, do:

	(apply 'process (list (concat "/bin/echo " PlotDevice)
			      'to_pipe
			      'from_pipe))

Then, (read from_pipe) and (print to_pipe) do the expected things.
Unfortunately, you'll have to declare from_pipe and to_pipe as
special.  It would be much easier if process were not an nlambda.
-- 
				-Liz Allen, U of Maryland, College Park MD
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