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From: Bart Schaefer <schaefer@brasslantern.com>
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Date: Wed, 14 May 2014 08:10:26 -0700
In-reply-to: <891422cb1f2a28c07029a09041a120da@xgm.de>
Comments: In reply to Florian Lindner <mailinglists@xgm.de>
 "Re: Stop script if one command returns != 0" (May 14,  4:31pm)
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	<891422cb1f2a28c07029a09041a120da@xgm.de>
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Subject: Re: Stop script if one command returns != 0
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On May 14,  4:31pm, Florian Lindner wrote:
}
} > (Count the responses.  I'm guessing 3 to 5...)
} 
} :-P

Wrong time of day in the USA for that guess, Peter ...

} > set -e
} > 
} > is standard across Bourne-like shells including zsh --- this is
} > equivalent to the zsh option "ERREXIT".
} 
} Problem is that set -e or ERREXIT kill my shell when called in a sourced 
} script.

This should work:

    trap 'return $?' ZERR

Or if you want to get fancier:

    [[ -o interactive ]] && trap 'return $?' ZERR || set -e

To remove the trap automatically (very recent zsh versions only):

    trap '(){ trap - ZERR; return $1 } $?' ZERR