From mboxrd@z Thu Jan  1 00:00:00 1970
From: Leo Famulari <leo@famulari.name>
Subject: Re: [PATCH] gnu: aspell: Wrap binary to find dictionaries.
Date: Sat, 9 Jan 2016 15:29:29 -0500
Message-ID: <20160109202929.GA30687@jasmine>
References: <CAKrPhPM1TC_BxY5rOiODrcBrWhWuWdLn0VXjoZY5DYCQ+Wkh-w@mail.gmail.com>
	<87ziweoj0u.fsf@gmail.com> <87r3hqogwv.fsf@gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Return-path: <guix-devel-bounces+gcggd-guix-devel=m.gmane.org@gnu.org>
Received: from eggs.gnu.org ([2001:4830:134:3::10]:42540)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <leo@famulari.name>) id 1aI08h-0002qJ-TX
	for guix-devel@gnu.org; Sat, 09 Jan 2016 15:29:32 -0500
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <leo@famulari.name>) id 1aI08e-0003ot-Mu
	for guix-devel@gnu.org; Sat, 09 Jan 2016 15:29:31 -0500
Received: from out4-smtp.messagingengine.com ([66.111.4.28]:47604)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <leo@famulari.name>) id 1aI08e-0003oi-HR
	for guix-devel@gnu.org; Sat, 09 Jan 2016 15:29:28 -0500
Content-Disposition: inline
In-Reply-To: <87r3hqogwv.fsf@gmail.com>
List-Id: "Development of GNU Guix and the GNU System distribution."
	<guix-devel.gnu.org>
List-Unsubscribe: <https://lists.gnu.org/mailman/options/guix-devel>,
	<mailto:guix-devel-request@gnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/archive/html/guix-devel>
List-Post: <mailto:guix-devel@gnu.org>
List-Help: <mailto:guix-devel-request@gnu.org?subject=help>
List-Subscribe: <https://lists.gnu.org/mailman/listinfo/guix-devel>,
	<mailto:guix-devel-request@gnu.org?subject=subscribe>
Errors-To: guix-devel-bounces+gcggd-guix-devel=m.gmane.org@gnu.org
Sender: guix-devel-bounces+gcggd-guix-devel=m.gmane.org@gnu.org
To: Alex Kost <alezost@gmail.com>
Cc: Guix-devel <guix-devel@gnu.org>, Federico Beffa <beffa@ieee.org>

On Sat, Jan 09, 2016 at 07:29:20PM +0300, Alex Kost wrote:
> >> From e183f8e473b97406968ecbda9fb13ebdf60963ec Mon Sep 17 00:00:00 2001
> >> From: Federico Beffa <beffa@fbengineering.ch>
> >> Date: Fri, 8 Jan 2016 14:23:12 +0100
> >> Subject: [PATCH 11/11] gnu: aspell: Wrap binary to find dictionaries.
> >>
> >> * gnu/packages/aspell.scm (aspell): Add 'wrap-aspell phase.
>                                            'wrap-aspell' phase.
> Typo --------------------------------------------------^
> 
> [...]
> >> +               (wrap-program bin/aspell
> >> +                 '("ASPELL_CONF" "" =
> >> +                   ("${ASPELL_CONF:-\"dict-dir ${GUIX_PROFILE:-$HOME/.guix-profile}/lib/aspell\"}")))))))))
> >
> > Just to clarify: what if I would like to run aspell with my own
> > ASPELL_CONF.  Will it work or will this default value override my own?
> > I mean I want to run aspell like this:
> >
> >   ASPELL_CONF=<something> aspell
> >
> > Will aspell be started with my <something>?
> 
> Sorry for being lazy, now I see that it will work.  Thanks to you (and
> to the bash manual) for introducing me to ${parameter:-word} construct.

For reference, this useful feature is 'parameter expansion' and it is in
the POSIX spec:
http://pubs.opengroup.org/onlinepubs/009695399/utilities/xcu_chap02.html#tag_02_06_02

> 
> -- 
> Alex
>