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From: allbery@ncoast.UUCP (Brandon Allbery)
Newsgroups: net.unix,net.unix-wizards
Subject: Shell manual
Message-ID: <1241@ncoast.UUCP>
Date: Sat, 21-Jun-86 12:40:39 EDT
Article-I.D.: ncoast.1241
Posted: Sat Jun 21 12:40:39 1986
Date-Received: Tue, 24-Jun-86 04:02:04 EDT
References: <18951@rochester.ARPA> <4230@sun.uucp>
Reply-To: allbery@ncoast.UUCP (Brandon Allbery)
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Organization: North Coast Computer Resources
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Expires:

Quoted from <4230@sun.uucp> ["Re: sh changes"], by shannon@sun.UUCP...
+---------------
| 	"If the colon (:) is omitted from the above expressions,
| 	the shell only checks whether parameter is set or not."
+---------------

Which I interpreted as:  without the colon, it becomes a no-op-or-error,
depending on whether it's set or not.  The manuals are less than unambiguous
in mnay places...

--Brandon
-- 
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