From: David Aguilar <davvid@gmail.com>
Date: Wed, 25 Jul 2012 03:14:23 +0000 (-0700)
Subject: difftool: Check all return codes from compare()
X-Git-Tag: v1.8.0-rc0~129^2~6
X-Git-Url: https://git.lorimer.id.au/gitweb.git/diff_plain/283abb2c8abb3f40d8d0170ba45c2e45d40f8cdb?ds=inline;hp=283abb2c8abb3f40d8d0170ba45c2e45d40f8cdb

difftool: Check all return codes from compare()

Handle the case where compare() is unable to read its inputs.
Emit a warning so that the user knows that something went wrong.

We may later want to restructure the code so that we can inhibit
tempdir cleanup when this condition is reached.

Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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