From afa80f534b8f7d0422a6e8f208745f3cb94b5d1e Mon Sep 17 00:00:00 2001
From: Denton Liu <liu.denton@gmail.com>
Date: Thu, 14 Jan 2021 15:02:41 -0800
Subject: [PATCH] t4203: stop losing return codes of git commands
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In a pipe, only the return code of the last command is used. Thus, all
other commands will have their return codes masked. Rewrite pipes so
that there are no git commands upstream so that their failure is
reported.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
Acked-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 t/t4203-mailmap.sh | 21 ++++++++++++++-------
 1 file changed, 14 insertions(+), 7 deletions(-)

diff --git a/t/t4203-mailmap.sh b/t/t4203-mailmap.sh
index 89cb300f28..c9cb1aa127 100755
--- a/t/t4203-mailmap.sh
+++ b/t/t4203-mailmap.sh
@@ -634,7 +634,8 @@ test_expect_success 'Log output with --use-mailmap' '
 	Author: $GIT_AUTHOR_NAME <$GIT_AUTHOR_EMAIL>
 	EOF
 
-	git log --use-mailmap | grep Author >actual &&
+	git log --use-mailmap >log &&
+	grep Author log >actual &&
 	test_cmp expect actual
 '
 
@@ -651,7 +652,8 @@ test_expect_success 'Log output with log.mailmap' '
 	Author: $GIT_AUTHOR_NAME <$GIT_AUTHOR_EMAIL>
 	EOF
 
-	git -c log.mailmap=True log | grep Author >actual &&
+	git -c log.mailmap=True log >log &&
+	grep Author log >actual &&
 	test_cmp expect actual
 '
 
@@ -665,7 +667,8 @@ test_expect_success 'log.mailmap=false disables mailmap' '
 	Author: nick1 <bugs@company.xx>
 	Author: $GIT_AUTHOR_NAME <$GIT_AUTHOR_EMAIL>
 	EOF
-	git -c log.mailmap=false log | grep Author >actual &&
+	git -c log.mailmap=false log >log &&
+	grep Author log >actual &&
 	test_cmp expect actual
 '
 
@@ -679,7 +682,8 @@ test_expect_success '--no-use-mailmap disables mailmap' '
 	Author: nick1 <bugs@company.xx>
 	Author: $GIT_AUTHOR_NAME <$GIT_AUTHOR_EMAIL>
 	EOF
-	git log --no-use-mailmap | grep Author > actual &&
+	git log --no-use-mailmap >log &&
+	grep Author log >actual &&
 	test_cmp expect actual
 '
 
@@ -690,7 +694,8 @@ test_expect_success 'Grep author with --use-mailmap' '
 	Author: Santa Claus <santa.claus@northpole.xx>
 	Author: Santa Claus <santa.claus@northpole.xx>
 	EOF
-	git log --use-mailmap --author Santa | grep Author >actual &&
+	git log --use-mailmap --author Santa >log &&
+	grep Author log >actual &&
 	test_cmp expect actual
 '
 
@@ -702,13 +707,15 @@ test_expect_success 'Grep author with log.mailmap' '
 	Author: Santa Claus <santa.claus@northpole.xx>
 	EOF
 
-	git -c log.mailmap=True log --author Santa | grep Author >actual &&
+	git -c log.mailmap=True log --author Santa >log &&
+	grep Author log >actual &&
 	test_cmp expect actual
 '
 
 test_expect_success 'log.mailmap is true by default these days' '
 	test_config mailmap.file complex.map &&
-	git log --author Santa | grep Author >actual &&
+	git log --author Santa >log &&
+	grep Author log >actual &&
 	test_cmp expect actual
 '