From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jeff King <peff@peff.net>
Subject: Re: New GSoC microproject ideas
Date: Wed, 12 Mar 2014 15:21:08 -0400
Message-ID: <20140312192108.GA1601@sigill.intra.peff.net>
References: <532049A7.6000304@alum.mit.edu>
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Cc: Junio C Hamano <gitster@pobox.com>,
	Michael Haggerty <mhagger@alum.mit.edu>,
	git discussion list <git@vger.kernel.org>,
	Fabian <bafain@gmail.com>,
	Quint Guvernator <quintus.public@gmail.com>
To: David Kastrup <dak@gnu.org>
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On Wed, Mar 12, 2014 at 08:16:53PM +0100, David Kastrup wrote:

> Junio C Hamano <gitster@pobox.com> writes:
> 
> > Here is another, as I seem to have managed to kill another one ;-)
> >
> > -- >8 --
> >
> > "VAR=VAL command" is sufficient to run 'command' with environment
> > variable VAR set to value VAL without affecting the environment of
> > the shell itself, but we cannot do the same with a shell function
> > (most notably, "test_must_fail");
> 
> No? bash:
> 
> dak@lola:/usr/local/tmp/lilypond$ zippo()
> > {
> > echo $XXX
> > echo $XXX
> > }
> dak@lola:/usr/local/tmp/lilypond$ XXX=8 zippo
> 8
> 8

Try:

  zippo() {
    echo $XXX
  }
  XXX=8 zippo
  zippo

XXX remains set after the first call under dash (but not bash). I
believe "ash" has the same behavior.

-Peff