From acfe1392eff2f96ef7931068b11b2d58196f4d95 Mon Sep 17 00:00:00 2001
From: Peter Eisentraut <peter@eisentraut.org>
Date: Wed, 2 Jan 2019 21:20:53 +0100
Subject: [PATCH] Switch pg_regress to output unified diffs by default

Author: Christoph Berg <myon@debian.org>
Discussion: https://www.postgresql.org/message-id/flat/20170406223103.ixihdedf6d6d4kbk@alap3.anarazel.de/
---
 doc/src/sgml/regress.sgml     | 2 +-
 src/test/regress/pg_regress.c | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index 673a8c2164..749d1a384b 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -410,7 +410,7 @@ make standbycheck
     If you don't
     like the <command>diff</command> options that are used by default, set the
     environment variable <envar>PG_REGRESS_DIFF_OPTS</envar>, for
-    instance <literal>PG_REGRESS_DIFF_OPTS='-u'</literal>.  (Or you
+    instance <literal>PG_REGRESS_DIFF_OPTS='-c'</literal>.  (Or you
     can run <command>diff</command> yourself, if you prefer.)
    </para>
 
diff --git a/src/test/regress/pg_regress.c b/src/test/regress/pg_regress.c
index 3c360d1635..d4f04a8a2c 100644
--- a/src/test/regress/pg_regress.c
+++ b/src/test/regress/pg_regress.c
@@ -62,10 +62,10 @@ static char *shellprog = SHELLPROG;
  */
 #ifndef WIN32
 const char *basic_diff_opts = "";
-const char *pretty_diff_opts = "-C3";
+const char *pretty_diff_opts = "-U3";
 #else
 const char *basic_diff_opts = "-w";
-const char *pretty_diff_opts = "-w -C3";
+const char *pretty_diff_opts = "-w -U3";
 #endif
 
 /* options settable from command line */