From 836475797aa1e882922f1a8d8af87fe848089a2d Mon Sep 17 00:00:00 2001
From: DWesl <22566757+DWesl@users.noreply.github.com>
Date: Mon, 17 Jun 2019 19:15:07 -0400
Subject: [PATCH] Ignore output of ```which```

My system produces an error message when ```which``` fails to find an
executable.  I would like to produce no output for the routine parts
of a test failure message.
---
 test.pl.in | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/test.pl.in b/test.pl.in
index df7a0f4..57aa784 100755
--- a/test.pl.in
+++ b/test.pl.in
@@ -28,9 +28,9 @@ sub assert_produces_correct_output {
 	my $diffResult = `diff $compared 2>&1`;
 
 	if ($diffResult ne '') {
-		if (`which kdiff3`) {
+		if (`which kdiff3 2>/dev/null`) {
 			system("kdiff3 $compared");
-		} elsif (!$ENV{CI} && `which vimdiff`) {
+		} elsif (!$ENV{CI} && `which vimdiff 2>/dev/null`) {
 			system("vimdiff $compared");
 		} else {
 			system("diff -u $compared");