From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <zsh-users-return-15825-mason-zsh=primenet.com.au@zsh.org>
Received: (qmail 22647 invoked by alias); 23 Feb 2011 20:35:05 -0000
Mailing-List: contact zsh-users-help@zsh.org; run by ezmlm
Precedence: bulk
X-No-Archive: yes
List-Id: Zsh Users List <zsh-users.zsh.org>
List-Post: <mailto:zsh-users@zsh.org>
List-Help: <mailto:zsh-users-help@zsh.org>
X-Seq: 15825
Received: (qmail 5832 invoked from network); 23 Feb 2011 20:35:03 -0000
X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on f.primenet.com.au
X-Spam-Level: 
X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_LOW
	autolearn=ham version=3.3.1
Received-SPF: none (ns1.primenet.com.au: domain at brasslantern.com does not designate permitted sender hosts)
MIME-Version: 1.0
In-Reply-To: <alpine.LNX.2.01.1102231257420.2792@hp>
References: <alpine.LNX.2.01.1102231257420.2792@hp>
Date: Wed, 23 Feb 2011 12:29:11 -0800
Message-ID: <AANLkTi=tPgwaene4RU8os41oTU=cFWQcrFHJW=9ferNr@mail.gmail.com>
Subject: Re: Function-scoped parameters?
From: Bart Schaefer <schaefer@brasslantern.com>
To: Zsh Users <zsh-users@zsh.org>
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

On Wednesday, February 23, 2011, Benjamin R. Haskell <zsh@benizi.com> wrote=
:
> The use case is that I want to assign a local parameter 'temp' to be set =
to the name of a temporary file. =A0If anything goes wrong in the function,=
 I'd like that temporary file to be removed, but I don't want 'temp' to lea=
k out of the function scope.

That's what "always" is for.

dosomething() {
  emulate -L zsh
  local temp=3D$(mktemp)
  setopt err_return
  {
    # ...
  } always {
    (( $+temp )) && rm $temp
  }
}