From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org
X-Spam-Level: 
X-Spam-Status: No, score=-3.3 required=5.0 tests=DKIM_SIGNED,DKIM_VALID,
	MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham autolearn_force=no
	version=3.4.4
Received: (qmail 6146 invoked from network); 21 Oct 2022 07:41:06 -0000
Received: from zero.zsh.org (2a02:898:31:0:48:4558:7a:7368)
  by inbox.vuxu.org with ESMTPUTF8; 21 Oct 2022 07:41:06 -0000
ARC-Seal: i=1; cv=none; a=rsa-sha256; d=zsh.org; s=rsa-20210803; t=1666338066;
	 b=iZj0IqRkjecYeTlIdX6CXAP+hfyV6VwmsEpb2rir6Jkx3KhuLMF//gMWOubmISDVYVoF5vhkgj
	  3GI+j0qHJVcHuft6jh5RakfkZXrgWnTxdqrJ9Vr44bHQiUJN82eLoDp+edc6y4II6t5M07pVV5
	  iRIsLchg/9coD++sT2ywcVP6hmYzh2QvNiH1Ul7yY/gj4b98OyOx6R26fXzCwzSZb/ZnnzLVpW
	  x2xHYn2Kz774GQ+7QU/0pN+Ocz5RrxporknaBJRfejQEMsOp9POkZkXAzBt0d3A4eOgKNGTxRp
	  mFr6t1VsFRHR1MrSRkKfXfjVxVEmA3HeuWuW7EvY042KxQ==;
ARC-Authentication-Results: i=1; zsh.org;
	iprev=pass (snd01007-bg.im.kddi.ne.jp) smtp.remote-ip=27.86.113.23;
	dmarc=none header.from=kba.biglobe.ne.jp;
	arc=none
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed; d=zsh.org; s=rsa-20210803; t=1666338066;
	bh=BQmeJLX1AbQtE3e8ApH7EHngbeOfzRVU8/cUETDLCik=;
	h=List-Archive:List-Owner:List-Post:List-Unsubscribe:List-Subscribe:List-Help:
	  List-Id:Sender:Message-ID:In-Reply-To:To:References:Date:Subject:
	  MIME-Version:Content-Transfer-Encoding:Content-Type:From:DKIM-Signature;
	b=dbyDHqW+1V5jACcjqKaiJD9ZMy4bmCJr3PM2VBANPcGNxGPgZpJojwr5/4tdcMiSuldjIeg/9d
	  vw+GcYMeZyWqPz+ywp1uElpEllwy7qzFL7KXOHoDs5i507LcnFBBmIvkchgecVi43C2wmAajxY
	  AG5KOefK2Ue7lY5TrUgPoqfcRqRHzxI502CwHQRpldp7TQeFzj/GjIQANtIclrrf0XdfyWfWr4
	  Lp9njJm6hoW+tDh5bZ1fKdFsEM/e4DtUcmmbBhqLmNNDTfbzNB4nQP383jD4mJ7drcI4Bmj6OZ
	  UgMD1visUFhad0k9SGS/GlTOmVIvQ1/eguMq69QMKKOc1g==;
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=zsh.org;
	s=rsa-20210803; h=List-Archive:List-Owner:List-Post:List-Unsubscribe:
	List-Subscribe:List-Help:List-Id:Sender:Message-Id:In-Reply-To:To:References:
	Date:Subject:Mime-Version:Content-Transfer-Encoding:Content-Type:From:
	Reply-To:Cc:Content-ID:Content-Description:Resent-Date:Resent-From:
	Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID;
	bh=2C1v4pBoyKIBwO4noRH/J2aY7rtkC5k1RA5jMbHMIMc=; b=EumI8QR9MhiUNsNjP88PVCTVHP
	v7DtqV6jfLLzYIoECFHN4nP/RwvNqaMmb8Pqubza3bES1DM4PViZ6TWZvrseHM9UFB2bUQB+CQ2/t
	aXwsaFhUZcypsOqsnQOn+GsVb+9wdjv+oj1WZwonblmaeFBJdFklCWo8V0e4KPVVaxD9+sGhJaR/7
	wvL5wZ82OvGuqrxVkMv3/m4+BeRC1K0CjCSFNv+Vr8eIlBuNhsl7YjntXXAdReZTOw9Xod0KZ5iCD
	CP3XY5Xe39P6gYP/ZemEfDDlIiYf7WwPyxRIYuCRA4eQFdCfm3rHK9WCSWgElVYXFT1H8uPuj2Npe
	gorWtj+A==;
Received: by zero.zsh.org with local
	id 1olmeP-000E9q-F2;
	Fri, 21 Oct 2022 07:41:05 +0000
Authentication-Results: zsh.org;
	iprev=pass (snd01007-bg.im.kddi.ne.jp) smtp.remote-ip=27.86.113.23;
	dmarc=none header.from=kba.biglobe.ne.jp;
	arc=none
Received: from snd01007-bg.im.kddi.ne.jp ([27.86.113.23]:26496 helo=dfmta1007.biglobe.ne.jp)
	by zero.zsh.org with esmtps (TLS1.3:TLS_AES_256_GCM_SHA384:256)
	id 1olmds-000Dns-1Y;
	Fri, 21 Oct 2022 07:40:33 +0000
Received: from mail.biglobe.ne.jp by omta1007.biglobe.ne.jp with ESMTP
          id <20221021074027556.DTWY.125901.mail.biglobe.ne.jp@biglobe.ne.jp>
          for <zsh-workers@zsh.org>; Fri, 21 Oct 2022 16:40:27 +0900
From: Jun T <takimoto-j@kba.biglobe.ne.jp>
Content-Type: text/plain;
	charset=us-ascii
Content-Transfer-Encoding: 7bit
Mime-Version: 1.0 (Mac OS X Mail 12.4 \(3445.104.21\))
Subject: Re: problem with 'ls | less' shell function
Date: Fri, 21 Oct 2022 16:40:27 +0900
References: <Y00dwVyJTYUk2QWn@yt.nih.at>
 <CAHYJk3SGs_+poYGwU+JYQBh4rQe2bf9SeuYGTpdLvfgSJSybGw@mail.gmail.com>
 <Y012dIpfGmPqj2Tz@yt.nih.at> <Y0+0olfiaDplISd7@localhost>
 <B1FBED5D-68AA-4297-99FE-0D03C795F45F@kba.biglobe.ne.jp>
To: zsh-workers@zsh.org
In-Reply-To: <B1FBED5D-68AA-4297-99FE-0D03C795F45F@kba.biglobe.ne.jp>
Message-Id: <2FE96386-2D04-434F-AD2F-F08356B1AE04@kba.biglobe.ne.jp>
X-Mailer: Apple Mail (2.3445.104.21)
X-Biglobe-Sender: takimoto-j@kba.biglobe.ne.jp
X-Seq: 50801
Archived-At: <https://zsh.org/workers/50801>
X-Loop: zsh-workers@zsh.org
Errors-To: zsh-workers-owner@zsh.org
Precedence: list
Precedence: bulk
Sender: zsh-workers-request@zsh.org
X-no-archive: yes
List-Id: <zsh-workers.zsh.org>
List-Help: <http://www.zsh.org/sympa/help>, <mailto:sympa@zsh.org?subject=HELP>
List-Subscribe: <http://www.zsh.org/sympa/subscribe/zsh-workers>, <mailto:sympa@zsh.org?subject=SUB%20zsh-workers>
List-Unsubscribe: <http://www.zsh.org/sympa/signoff/zsh-workers>, <mailto:sympa@zsh.org?subject=SIG%20zsh-workers>
List-Post: <mailto:zsh-workers@zsh.org>
List-Owner: <mailto:zsh-workers-request@zsh.org>
List-Archive: <http://www.zsh.org/sympa/arc/zsh-workers>


> 2022/10/21 14:45, Jun T <takimoto-j@kba.biglobe.ne.jp> wrote:
> 
> 2447 is the main zsh, 3644 is the subshell for the left hand side
> of the pipeline, and 3645 is 'sleep 10'.

And the subshell is using 100% of a CPU core, in the loop
            for (; !nowait;) {        

in function execpline(), mostly lines 1779-1797 in exec.c.
The subshell have missed the SIGCHLD?