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Date:      Tue, 12 May 1998 12:10:00 -0700 (PDT)
From:      woods@zeus.leitch.com (Greg A. Woods@planix.com (Greg A. Woods))
To:        freebsd-bugs@FreeBSD.ORG
Subject:   Re: bin/6550
Message-ID:  <199805121910.MAA26269@freefall.freebsd.org>

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The following reply was made to PR bin/6550; it has been noted by GNATS.

From: woods@zeus.leitch.com (Greg A. Woods@planix.com (Greg A. Woods))
To: freebsd-gnats-submit@FreeBSD.ORG
Cc:  Subject: Re: bin/6550
Date: Tue, 12 May 1998 15:06:49 -0400 (EDT)

 [ On Mon, May 11, 1998 at 04:00:03 (-0700), Wolfram Schneider wrote: ]
 > Subject: Re: bin/6550
 >
 >  The current algorithm  is
 >  
 >  	if (no_meta_characters(command))
 >  		exec(command)
 >  	else
 >  		/bin/sh -c "command"
 >  
 >  where it should be
 >  
 >  	if (no_meta_characters(command) && no_shell_builtin(command))
 >  		exec(command)
 >  	else
 >  		/bin/sh -c "command"
 
 Given the POSIX.2 Draft and the OpenGroup XPG specifications, this would
 better be expressed as:
 
  	if (no_meta_characters(command) && no_POSIX_shell_builtins(command))
  		exec(command)
  	else
 		system(command)
 
 -- 
 							Greg A. Woods
 
 +1 416 443-1734      VE3TCP      <gwoods@acm.org>      <robohack!woods>
 Planix, Inc. <woods@planix.com>; Secrets of the Weird <woods@weird.com>

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