From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <zsh-workers-return-35966-mason-zsh=primenet.com.au@zsh.org>
Received: (qmail 22653 invoked by alias); 31 Jul 2015 17:28:31 -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: 35966
Received: (qmail 21143 invoked from network); 31 Jul 2015 17:28:28 -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=-1.7 required=5.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED,
	FREEMAIL_FROM,NML_ADSP_CUSTOM_MED,RCVD_IN_DNSWL_LOW,SPF_HELO_PASS
	autolearn=no autolearn_force=no version=3.4.0
X-Injected-Via-Gmane: http://gmane.org/
To: zsh-workers@zsh.org
From: Christian Neukirchen <chneukirchen@gmail.com>
Subject: Re: 5.0.8 regression when waiting for suspended jobs
Date: Fri, 31 Jul 2015 19:28:16 +0200
Message-ID: <874mkkjky7.fsf@gmail.com>
References: <87wpxhk970.fsf@gmail.com>
	<150730123904.ZM11774@torch.brasslantern.com>
	<87si84k9uf.fsf@gmail.com>
	<150731085638.ZM15733@torch.brasslantern.com>
Mime-Version: 1.0
Content-Type: text/plain
X-Complaints-To: usenet@ger.gmane.org
X-Gmane-NNTP-Posting-Host: host53-2.natpool.mwn.de
In-Reply-To: <150731085638.ZM15733@torch.brasslantern.com> (Bart Schaefer's
	message of "Fri, 31 Jul 2015 08:56:38 -0700")
User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux)

Bart Schaefer <schaefer@brasslantern.com> writes:

> On Jul 31, 10:30am, Christian Neukirchen wrote:
> }
> } > Also if you wait by job number ("wait %1") instead, "wait" returns right
> } > away rather than blocking on the stopped job (in both .7 and .8).
> } 
> } Can confirm.  Why would it be different when giving the PID...
>
> Comparison:
>
> zsh-5.0.7
>  - "wait $!" blocks (looping on repeated wait3() nonzero)
>  - "wait %1" returns immediately
>  - "wait" returns immediately
>
> zsh-5.0.8
>  - "wait $!" loops but also printing status every time
>  - "wait %1" returns immediately
>  - "wait" returns immediately

TBH I don't know the best behavior here, but it's not endlessly
looping spewing messages.  :)

> bash-4.2.25
>  - "wait $!" returns immediately
>  - "wait %1" returns immediately
>  - "wait" returns immediately
>
> ksh93 (2011)
>  - "wait $!" blocks
>  - "wait %1" blocks
>  - "wait" blocks

I found it surprising that pid and jobid behave differently, but if
that's for historical reasons, I'm fine with that.

-- 
Christian Neukirchen  <chneukirchen@gmail.com>  http://chneukirchen.org