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From: news@cit-vax.Caltech.Edu (Usenet netnews)
Newsgroups: comp.sys.amiga
Subject: Re: Pattern Matching & documentation
Message-ID: <1367@cit-vax.Caltech.Edu>
Date: Wed, 17-Dec-86 21:32:24 EST
Article-I.D.: cit-vax.1367
Posted: Wed Dec 17 21:32:24 1986
Date-Received: Thu, 18-Dec-86 05:44:19 EST
References: <1908@jade.BERKELEY.EDU> <2306@sdcsvax.UCSD.EDU> <1967@jade.BERKELEY.EDU>
Reply-To: tim@tomcat.UUCP (Tim Kay)
Organization: California Institute of Technology
Lines: 23

Organization : California Institute of Technology
Keywords: 
From: tim@tomcat.Caltech.Edu (Tim Kay)
Path: tomcat!tim

mwm@eris.BERKELEY.EDU (Mike (Don't have strength to leave) Meyer) writes:
>To top it off, the $@ mechanism hands back "" if you invoke the script
>without any arguments. Makes for interesting things, especially if one
>of the commands involved is a cd (anyone want to guess what a 'cd ""'
>does? :-)

I previously posted a "working" version of lecho.  Note that when it
is fed no arguments, a blank line is produced.

'cd ""' does different things under Sys V than under 4.2.  Under
Sys V, "" is an invalid filename, so you get "No such file or directory".
Under 4.2, the filename "" is the same as ".", so you cd to the
current directory (a no-op).

Timothy L. Kay				tim@csvax.caltech.edu
Department of Computer Science
Caltech, 256-80
Pasadena, CA  91125