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Date:   Sat, 26 Nov 2016 11:19:07 -0500
From:   Jeff King <peff@peff.net>
To:     Johannes Schindelin <Johannes.Schindelin@gmx.de>
Cc:     git@vger.kernel.org, Junio C Hamano <gitster@pobox.com>,
        David Aguilar <davvid@gmail.com>,
        Dennis Kaarsemaker <dennis@kaarsemaker.net>
Subject: Re: [PATCH v3 1/2] difftool: add a skeleton for the upcoming builtin
Message-ID: <20161126161907.xol62zytn2jb45gh@sigill.intra.peff.net>
References: <cover.1480019834.git.johannes.schindelin@gmx.de>
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On Sat, Nov 26, 2016 at 01:22:28PM +0100, Johannes Schindelin wrote:

> In other words, GIT_CONFIG_PARAMETERS is *explicitly scrubbed* from the
> environment when we run our tests (by the code block between the "before"
> and the "after" statements in the diff above).

Sorry if I wasn't clear. I meant to modify t7800 to run the tests twice,
once with the existing script and once with the builtin. I.e., to set
the variable after test-lib.sh has done its scrubbing, and then use a
loop or similar to go through the tests twice.

If you want to control it from outside the test script, you'd need
something like:

  if test "$GIT_TEST_DIFFTOOL" = "builtin"
  then
	GIT_CONFIG_PARAMETERS=...
  fi

-Peff