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Date: Wed, 16 Oct 2002 09:00:03 -0700 (PDT)
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From: Garrett Wollman <wollman@lcs.mit.edu>
Subject: bin/44142: /bin/sh does not support 'command1 & && command2' syntax, which is REQUIRED by POSIX
Reply-To: Garrett Wollman <wollman@lcs.mit.edu>
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The following reply was made to PR bin/44142; it has been noted by GNATS.

From: Garrett Wollman <wollman@lcs.mit.edu>
To: Alexandr Kovalenko <never@nevermind.kiev.ua>
Cc: FreeBSD-gnats-submit@FreeBSD.ORG
Subject: bin/44142: /bin/sh does not support 'command1 & && command2' syntax, which is REQUIRED by POSIX
Date: Wed, 16 Oct 2002 11:55:42 -0400 (EDT)

 <<On Wed, 16 Oct 2002 17:16:54 +0300 (EEST), Alexandr Kovalenko <never@nevermind.kiev.ua> said:
 
 > /bin/sh does not support 'command1 & && command2' syntax, which is REQUIRED by POSIX:
 
 Your interpretation is erroneous.  The grammar takes precedence over
 the textual description of the syntax, and the grammar is quite clear:
 
 complete_command	: list separator
 			| list
 			;
 list			: list separator_op and_or
 			|		    and_or
 			;
 and_or			:			    pipeline
 			| and_or AND_IF   linebreak pipeline
 			| and_or OR_IF    linebreak pipeline
 			;
 
 The pseudo-syntax `command1 &' can only be resolved by the `list'
 production in the grammar.   The `&&' and `||' operators take
 pipelines, and not lists, as operands.  See XCU6 page 58.
 
 -GAWollman
 

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