Path: utzoo!attcan!uunet!jarthur!elroy.jpl.nasa.gov!ames!sun-barr!newstop!sun!ronin.Eng.Sun.COM!ronin
From: ronin@ronin.Eng.Sun.COM (Brian Raymor)
Newsgroups: comp.windows.news
Subject: Re: OW 2 and %pipe
Message-ID: <138026@sun.Eng.Sun.COM>
Date: 28 Jun 90 17:03:02 GMT
References: <1990Jun28.090832.22020@canon.co.uk>
Sender: news@sun.Eng.Sun.COM
Lines: 32

In article <1990Jun28.090832.22020@canon.co.uk>, rjf@canon.co.uk (Robin Faichney) writes:
> 
> It looks like %pipe doesn't work anymore.  Is this a bug, or
> has %pipe been dropped; in either case, what is the alternative?
> -- 

There is a new pipe extension.  Here is a description from the NeWS 2.1
Programmer's Guide (Revision 50, of 23 February 1990) :

	command pipe => rfile wfile

	Executes the utility whose name is command.  The input for 
	command can be provided with writes on the wfile object.  
	The output from command can be read from the rfile object.  
	The wfile object is normally removed from the stack if 
	command does not expect input.  Popping either object is 
	sufficient to close that portion of the connection.  If a 
	two-way, read-write connection is established, it is good 
	practice to close the wfile before consuming command's output 
	via rfile to overcome potential buffering problems.

Your example would be rewritten as :

(echo hello) pipe	% rfile wfile
pop			% rfile
20 string readline {
    print
} if


Brian Raymor
NeWS Technology Group