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From: Bart Schaefer <schaefer@brasslantern.com>
Message-Id: <151104110125.ZM20496@torch.brasslantern.com>
Date: Wed, 4 Nov 2015 11:01:25 -0800
In-Reply-To: <20151104142521.GA31943@zira.vinc17.org>
Comments: In reply to Vincent Lefevre <vincent@vinc17.net>
        "Re: Possible bug in signal handling" (Nov  4,  3:25pm)
References: <87wpu0g19r.fsf@secretsauce.net> 
	<151103201631.ZM19473@torch.brasslantern.com> 
	<87vb9ifkyz.fsf@secretsauce.net> 
	<151103204634.ZM19567@torch.brasslantern.com> 
	<20151104142521.GA31943@zira.vinc17.org>
X-Mailer: OpenZMail Classic (0.9.2 24April2005)
To: zsh-workers <zsh-workers@zsh.org>
Subject: Re: Possible bug in signal handling
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On Nov 4,  3:25pm, Vincent Lefevre wrote:
} Subject: Re: Possible bug in signal handling
}
} I suppose you meant "if it does not have children...".

Yes.

} You're thinking about IUE (implemented by zsh, unless this has changed
} in the last few years), while WCE (implemented by bash) is generally
} regarded to be better:
} 
}   http://www.cons.org/cracauer/sigint.html

What zsh does depends on context.  The simple example in that web page
(emacs ...; cp ...) behaves like WCE if emacs opens the terminal, but
behaves like WUE if emacs runs in GUI mode.  For a process at the end
of a pipeline like Dima's original example, zsh does IUE.  Interactive
shells with shinstdin (e.g. not reading a script file) also do W?E.

Most of the time a zsh script is going to perform IUE and an interactive
shell WCE, because that's how we interpreted the "inherited from parent"
signal handling was required to behave.