[PATCH 1/2] submodule: Demonstrate failure to add with auto/safecrlf

[Brad King <brad.king@kitware.com>]

If 'core.autocrlf' and 'core.safecrlf' are both enabled then
'git submodule add' fails with an error such as

 fatal: LF would be replaced by CRLF in .gitmodules
 Failed to register submodule 'submod'

because it generates a '.gitmodules' file with LF newlines that are
rejected by 'git add' under this configuration.  Demonstrate this known
breakage with a new test in t7400-submodule-basic covering the case.

Signed-off-by: Brad King <brad.king@kitware.com>
---
 t/t7400-submodule-basic.sh |   13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/t/t7400-submodule-basic.sh b/t/t7400-submodule-basic.sh
index 81827e6..5eaeb04 100755
--- a/t/t7400-submodule-basic.sh
+++ b/t/t7400-submodule-basic.sh
@@ -43,6 +43,7 @@ test_expect_success 'setup - hide init subdirectory' '
 
 test_expect_success 'setup - repository to add submodules to' '
 	git init addtest &&
+	git init addtest-crlf &&
 	git init addtest-ignore
 '
 
@@ -98,6 +99,18 @@ test_expect_success 'submodule add' '
 	test_cmp empty untracked
 '
 
+test_expect_failure 'submodule add with core.autocrlf and core.safecrlf' '
+	(
+		cd addtest-crlf &&
+		git config core.autocrlf true &&
+		git config core.safecrlf true &&
+		git submodule add "$submodurl" submod &&
+		echo ".gitmodules" >expect &&
+		git ls-files -- .gitmodules >actual &&
+		test_cmp expect actual
+	)
+'
+
 test_expect_success 'submodule add to .gitignored path fails' '
 	(
 		cd addtest-ignore &&
-- 
1.7.10