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From: Bart Schaefer <schaefer@brasslantern.com>
Message-Id: <150818172517.ZM31990@torch.brasslantern.com>
Date: Tue, 18 Aug 2015 17:25:17 -0700
In-Reply-To: <20150819000649.GA29640@zira.vinc17.org>
Comments: In reply to Vincent Lefevre <vincent@vinc17.net>
        "Re: PRINT_EXIT_VALUE: Suppress for if/while conditions" (Aug 19,  2:06am)
References: <20150731231225.GB2054@tarsus.local2> 
	<20150815010451.GA16635@ioooi.vinc17.net> 
	<CAHYJk3TB=M=X2PSa2Jx0s2jwkVk9aCy8NqVarX8184HS0s4CFg@mail.gmail.com> 
	<20150819000649.GA29640@zira.vinc17.org>
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To: zsh-workers@zsh.org
Subject: Re: PRINT_EXIT_VALUE: Suppress for if/while conditions
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On Aug 19,  2:06am, Vincent Lefevre wrote:
} Subject: Re: PRINT_EXIT_VALUE: Suppress for if/while conditions
}
} > for i in file1 file2; do
} >   veryimportanttask $i
} > done
} 
} But you don't know which one:
} 
} $ for i in 1 2; do /bin/false $i; done
} zsh: exit 1     /bin/false $i
} zsh: exit 1     /bin/false $i

    eval "veryimportanttask ${(b)i}"

Of course then printexitvalue prints "exit 1" for each of the eval
as well.  *There* is a case where it's probably entirely extraneous.

torch% setopt printexitvalue
torch% for i in 1 2; do eval /bin/false $i; done
zsh: exit 1     /bin/false 1
zsh: exit 1
zsh: exit 1     /bin/false 2
zsh: exit 1