From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <zsh-workers-return-37060-mason-zsh=primenet.com.au@zsh.org>
Received: (qmail 29329 invoked by alias); 4 Nov 2015 04:46:39 -0000
Mailing-List: contact zsh-workers-help@zsh.org; run by ezmlm
Precedence: bulk
X-No-Archive: yes
List-Id: Zsh Workers List <zsh-workers.zsh.org>
List-Post: <mailto:zsh-workers@zsh.org>
List-Help: <mailto:zsh-workers-help@zsh.org>
X-Seq: 37060
Received: (qmail 4523 invoked from network); 4 Nov 2015 04:46:39 -0000
X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on f.primenet.com.au
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,T_DKIM_INVALID
	autolearn=ham autolearn_force=no version=3.4.0
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=brasslantern_com.20150623.gappssmtp.com; s=20150623;
        h=from:message-id:date:in-reply-to:comments:references:to:subject
         :mime-version:content-type;
        bh=k0uiCdwfG0nfwg3BCVe5z9C2+AV3XPVzRDLCgpzjVl8=;
        b=ZS6GtrHAbPzKbVUuZA9MZJhYeUH53A3/OsoSa3o4XynS4Ou+Vr8PZi7O3BALmmXRh5
         Q31qyslJXW0c1nrdIiP/EbfpYAFwGw9ejZ0LGUg3BhAVHPfPvXtyyOxR/Tn4NdUtF28s
         NHHQHbmuZR//sdsIyyGGy5oUtnYQp2FJDUizWyp9rQgVjwlx1gUQyT7IiZ6Omxhp1kni
         nnz0E2bxAKjRmoBJ6aJO5pXkD0aLML+R1lipRxsmfxFTXMcyI/MPqVMdeMYeXfbjGxIX
         QV9XPDvdViInFDwM148mf4LJJu7opG/pjb4p3gh1IxFDSEfAm61sUy1ENVYNsam91LmR
         lv8w==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=1e100.net; s=20130820;
        h=x-gm-message-state:from:message-id:date:in-reply-to:comments
         :references:to:subject:mime-version:content-type;
        bh=k0uiCdwfG0nfwg3BCVe5z9C2+AV3XPVzRDLCgpzjVl8=;
        b=HmTxNTyBB+8PtmI3D49fz4GJxZ+0SSrGlZDEWncfWtBeCcfv+LaqAx1gJ3dqjWKC/z
         FUSKl7XF0sbGwacPwvegYJ5x8iWpbck37t+44tQQ/GHWweAdYV/zqp+Rv4lp4G8pjJm/
         +wj+Y5Xt9E1QuvzE9wd1LQ5x+H3RGMDSzPsQOUUn9z9PmU8Vd4TDeOThZxeWN53fsnwT
         DMlqfVxXXOLS6vifG2jIh5EsCawd0cAW/mKjdXbsYXOsFimZP2SuBtXaOVl0DORn6WwH
         0bH/9cVxcd31RcxWa/dZsVr1IJdh8DyBlAX5SWTnRx+KQEG9Ja0LXjRf+6fnanZXHqDR
         wuZg==
X-Gm-Message-State: ALoCoQnhl68JFxNSi5nx/3HJh9/OLTOQob7Sf0DSDxu/72XaGyLQs0372+U56D+oTJYm0C1qbWFz
X-Received: by 10.202.242.68 with SMTP id q65mr20326182oih.9.1446612397028;
        Tue, 03 Nov 2015 20:46:37 -0800 (PST)
From: Bart Schaefer <schaefer@brasslantern.com>
Message-Id: <151103204634.ZM19567@torch.brasslantern.com>
Date: Tue, 3 Nov 2015 20:46:34 -0800
In-Reply-To: <87vb9ifkyz.fsf@secretsauce.net>
Comments: In reply to Dima Kogan <dima@secretsauce.net>
        "Re: Possible bug in signal handling" (Nov  3,  8:27pm)
References: <87wpu0g19r.fsf@secretsauce.net> 
	<151103201631.ZM19473@torch.brasslantern.com> 
	<87vb9ifkyz.fsf@secretsauce.net>
X-Mailer: OpenZMail Classic (0.9.2 24April2005)
To: Dima Kogan <dima@secretsauce.net>, zsh-workers <zsh-workers@zsh.org>
Subject: Re: Possible bug in signal handling
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii

On Nov 3,  8:27pm, Dima Kogan wrote:
}
} Thanks for looking at this, Bart. I don't really understand this area in
} detail, but should those changes be necessary? Is it not a bug in zsh
} (and bash, I guess) that the perl process is orphaned?

That's unclear.  The default response to SIGINT is supposed to be that
the process exits, not that it only exits if it has children that have
not yet exited.  If someone wants to pore over the POSIX spec and point
out where it says that rule is countermanded for the shell, go for it.
Otherwise I'd say it's up to the script to change the signal handling
away from the default.

You could also fix it by using "exec perl ..." which in zsh removes the
"inner zsh" from the process tree entirely (in that particular example;
more generally, "exec" the rightmost thing in the pipeline).