Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!utgpu!water!watmath!clyde!rutgers!cbmvax!vu-vlsi!swatsun!schwartz
From: schwartz@swatsun.UUCP
Newsgroups: comp.os.misc
Subject: Re: command interpreters
Message-ID: <1139@carthage.swatsun.UUCP>
Date: Wed, 20-May-87 15:26:47 EDT
Article-I.D.: carthage.1139
Posted: Wed May 20 15:26:47 1987
Date-Received: Sat, 23-May-87 01:09:09 EDT
References: <5828@shemp.UCLA.EDU> <34ab0e42.8be4@apollo.uucp> <667@bsu-cs.UUCP> <1122@sigi.Colorado.EDU>
Organization: Swarthmore College, Swarthmore PA
Lines: 25
Keywords: Primos, CPL
Summary: woeful human engineering

In article <1122@sigi.Colorado.EDU>, forys@sigi.Colorado.EDU (Jeff Forys) writes:
> In article <1135@byzantium.swatsun.UUCP> schwartz@swatsun
> (Scott Schwartz) writes:
> > Speaking of fun command interpreters, Primos supports a command
> > language that penalizes you for hitting <break> too many times
> 
> Wait!  It wasnt a penalty -- it was a feature!!  Besides, arent you
> warned of the impending doom with something like:
> 
> 	AT STACK LEVEL 40, USE `RLS' TO RELEASE

Yup.  It was all intended as a "feature" and the maximum stack depth
allowed is settable by Your System Administrator (it's set to 10 around here).
But in all my years (well, the last four anyway) I've never made use of
that feature.  I have provoked it's wrath when impatiently hitting break 
several times in a row to stop a recalcitrant program.  

Incidently, for those who have never used Pr1mos, the result of stacking up
too many frames (at least in rev 19.4.xx or later, I think) is to dump you
into the "mini level" where all you can do is execute pr1mos internal
commands,  like RLS.
-- 
# Scott Schwartz
# UUCP: ...{{seismo,ihnp4}!bpa, cbmvax!vu-vlsi, sun!liberty}!swatsun!schwartz
# AT&T: (215)-328-8610	/* lab phone */