From 574f7643214d8381a03083ffbb08ecceec44d6b2 Mon Sep 17 00:00:00 2001
From: Peter Eisentraut
Date: Tue, 29 Jan 2013 22:58:38 -0500
Subject: pg_regress: Allow overriding diff options

By setting the environment variable PG_REGRESS_DIFF_OPTS, custom diff
options can be passed.

reviewed by Jeevan Chalke
---
 doc/src/sgml/regress.sgml | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'doc/src')

diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index 60250bb7a9f..327c3d04f7b 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -285,7 +285,10 @@ gmake check EXTRA_TESTS=collate.linux.utf8 LANG=en_US.utf8
     file against the reference outputs stored in the
     <filename>src/test/regress/expected</filename> directory.  Any
     differences are saved for your inspection in
-    <filename>src/test/regress/regression.diffs</filename>.  (Or you
+    <filename>src/test/regress/regression.diffs</filename>.  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
     can run <command>diff</command> yourself, if you prefer.)
    </para>
 
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