From 6a536e2076f02a98e0d6403ff68f3acf717fa1c4 Mon Sep 17 00:00:00 2001
From: Karthik Nayak <karthik.188@gmail.com>
Date: Fri, 6 Mar 2015 16:48:08 +0530
Subject: git: treat "git -C '<path>'" as a no-op when <path> is empty

'git -C ""' unhelpfully dies with error "Cannot change to ''",
whereas the shell treats `cd ""' as a no-op.  Taking the shell's
behavior as a precedent, teach git to treat `-C ""' as a no-op, as
well.

Helped-by: Junio C Hamano <gitster@pobox.com>
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 t/t0056-git-C.sh | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 't')

diff --git a/t/t0056-git-C.sh b/t/t0056-git-C.sh
index 99c037703a..2630e756da 100755
--- a/t/t0056-git-C.sh
+++ b/t/t0056-git-C.sh
@@ -14,6 +14,16 @@ test_expect_success '"git -C <path>" runs git from the directory <path>' '
 	test_cmp expected actual
 '
 
+test_expect_success '"git -C <path>" with an empty <path> is a no-op' '
+	(
+		mkdir -p dir1/subdir &&
+		cd dir1/subdir &&
+		git -C "" rev-parse --show-prefix >actual &&
+		echo subdir/ >expect &&
+		test_cmp expect actual
+	)
+'
+
 test_expect_success 'Multiple -C options: "-C dir1 -C dir2" is equivalent to "-C dir1/dir2"' '
 	test_create_repo dir1/dir2 &&
 	echo 1 >dir1/dir2/b.txt &&
-- 
cgit v1.2.3