From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <zsh-workers-return-40316-mason-zsh=primenet.com.au@zsh.org>
Received: (qmail 20236 invoked by alias); 9 Jan 2017 04:17:10 -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: 40316
Received: (qmail 10267 invoked from network); 9 Jan 2017 04:17:10 -0000
X-Qmail-Scanner-Diagnostics: from out1-smtp.messagingengine.com by f.primenet.com.au (envelope-from <d.s@daniel.shahaf.name>, uid 7791) with qmail-scanner-2.11 
 (clamdscan: 0.99.2/21882. spamassassin: 3.4.1.  
 Clear:RC:0(66.111.4.25):SA:0(-0.7/5.0):. 
 Processed in 2.253858 secs); 09 Jan 2017 04:17:10 -0000
X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on f.primenet.com.au
X-Spam-Level: 
X-Spam-Status: No, score=-0.7 required=5.0 tests=RCVD_IN_DNSWL_LOW,
	RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,T_DKIM_INVALID autolearn=unavailable
	autolearn_force=no version=3.4.1
X-Envelope-From: d.s@daniel.shahaf.name
X-Qmail-Scanner-Mime-Attachments: |
X-Qmail-Scanner-Zip-Files: |
Received-SPF: none (ns1.primenet.com.au: domain at daniel.shahaf.name does not designate permitted sender hosts)
DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d=
	daniel.shahaf.name; h=content-type:date:from:in-reply-to
	:message-id:mime-version:references:subject:to:x-me-sender
	:x-me-sender:x-sasl-enc:x-sasl-enc; s=mesmtp; bh=999ckel5k7Rd21O
	rcXfeOIx8t5w=; b=wP1LX6xhY1W6tdwHaGpSvVkpnhUl650j+MQaABipBfSZ1TF
	KrdX23XtZbey3x/+b70dzOxKVC2LlLRGRP+2uDx/y2QXWIbYFyz9xKMhNVzYCBb2
	oyGzi7qSRPr1DtZvyFAH30tA0sZhkv3dNxGn8w7uutfuj1CbTAwnVFiXeq8Y=
DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d=
	messagingengine.com; h=content-type:date:from:in-reply-to
	:message-id:mime-version:references:subject:to:x-me-sender
	:x-me-sender:x-sasl-enc:x-sasl-enc; s=smtpout; bh=999ckel5k7Rd21
	OrcXfeOIx8t5w=; b=WzuAWZz/Ew7HPXGCRtYZSCiNp5X1x/qIkKFQ0RQSyrJRZ3
	azOqd1kfrqAyTYTyX9GLLkbWlnH6pmuPUR2h2sk1TxOltWywa6gDC7q+NiZgU7IU
	DS9nGCdfemxuP5OQHUDJJvh0xMCrKovp2MVMyhSSJGh8HrXjFE4W+VBxaXWbE=
X-ME-Sender: <xms:OQxzWG8_gSQoU-_TjkA-secWKFqSIZjKZbnmBHPpP8LEX1FImQ9Pkg>
X-Sasl-enc: Lz9zSfF5jz7kZb4fWM99kLMTFC0TWOvZTEKtqZ5xSyq8 1483934777
Date: Mon, 9 Jan 2017 04:02:58 +0000
From: Daniel Shahaf <d.s@daniel.shahaf.name>
To: zsh-workers@zsh.org
Subject: Re: Defining function based on alias
Message-ID: <20170109040258.GA8019@fujitsu.shahaf.local2>
References: <20170107221659.1b9232da@ntlworld.com>
 <20170108191922.3d3de59f@ntlworld.com>
 <170108160921.ZM11340@torch.brasslantern.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
In-Reply-To: <170108160921.ZM11340@torch.brasslantern.com>
User-Agent: Mutt/1.5.23 (2014-03-12)

Bart Schaefer wrote on Sun, Jan 08, 2017 at 16:09:21 -0800:
> On Jan 8,  7:19pm, Peter Stephenson wrote:
> }
> } I am about to commit the following, which I hope will hope will stop
> } people coming to grief with this common confusion.  Please say if you
> } see any problems.
> 
> OK, here's an unusual case ...
> 
>     alias safely:foo='[[ -n $functions[foo] ]] || foo'
> 
>     safely:foo() { echo this is foo only if no other foo }
> 
> I hesitate to suggest further convolutions, but maybe an option to the
> alias command to "locally" switch on ALIAS_FUNC_DEF if it's actually
> *meant* to be used that way?

This case doesn't require a new option:

    alias safely:foo='[[ -n $functions[foo] ]] || function foo'

> Probably not very important.
> 

Another case:

% alias foo=''
% foo() echo hey  
hey

Or less minimally:

% setopt NO_multifuncdef 
% alias foo='' 
% foo bar () :        
% which -a foo bar  
foo: aliased to 
bar () {
        :
}

Should these two behave differently when the new option is set?  The
first case appeared to be a non-anonymous function definition and the
second a multifuncdef, but the alias changed the semantics.

As Bart said: probably not very important.