From 218c883783ee7c23a0955507f5b7ac4027428d63 Mon Sep 17 00:00:00 2001
From: Stefan Beller <sbeller@google.com>
Date: Tue, 2 May 2017 12:32:14 -0700
Subject: submodule: properly recurse for read-tree and checkout

We forgot to prepare the submodule env, which is only a problem for
nested submodules. See 2e5d6503bd (ls-files: fix recurse-submodules
with nested submodules, 2017-04-13) for further explanation.

To come up with a proper test for this, we'd need to look at nested
submodules just as in that given commit. It turns out we're lucky
and these tests already exist, but are marked as failing. We need
to pass `--recurse-submodules` to read-tree additionally to make
these tests pass. Passing that flag alone would not make the tests
pass, such that this covers testing for the bug fix of the submodule
env as well.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/submodule.c b/submodule.c
index b0141a6..b3ae642 100644
--- a/submodule.c
+++ b/submodule.c
@@ -1446,7 +1446,7 @@ int submodule_move_head(const char *path,
 
 	argv_array_pushf(&cp.args, "--super-prefix=%s%s/",
 			get_super_prefix_or_empty(), path);
-	argv_array_pushl(&cp.args, "read-tree", NULL);
+	argv_array_pushl(&cp.args, "read-tree", "--recurse-submodules", NULL);
 
 	if (flags & SUBMODULE_MOVE_HEAD_DRY_RUN)
 		argv_array_push(&cp.args, "-n");
@@ -1474,6 +1474,7 @@ int submodule_move_head(const char *path,
 			cp.no_stdin = 1;
 			cp.dir = path;
 
+			prepare_submodule_repo_env(&cp.env_array);
 			argv_array_pushl(&cp.args, "update-ref", "HEAD", new, NULL);
 
 			if (run_command(&cp)) {
diff --git a/t/lib-submodule-update.sh b/t/lib-submodule-update.sh
index fb4f7b0..2c17826 100755
--- a/t/lib-submodule-update.sh
+++ b/t/lib-submodule-update.sh
@@ -787,11 +787,6 @@ test_submodule_switch_recursing () {
 	then
 		RESULTDS=failure
 	fi
-	RESULTR=success
-	if test "$KNOWN_FAILURE_SUBMODULE_RECURSIVE_NESTED" = 1
-	then
-		RESULTR=failure
-	fi
 	RESULTOI=success
 	if test "$KNOWN_FAILURE_SUBMODULE_OVERWRITE_IGNORED_UNTRACKED" = 1
 	then
@@ -1003,7 +998,7 @@ test_submodule_switch_recursing () {
 	'
 
 	# recursing deeper than one level doesn't work yet.
-	test_expect_$RESULTR "$command: modified submodule updates submodule recursively" '
+	test_expect_success "$command: modified submodule updates submodule recursively" '
 		prolog &&
 		reset_work_tree_to_interested add_nested_sub &&
 		(
diff --git a/t/t1013-read-tree-submodule.sh b/t/t1013-read-tree-submodule.sh
index de1ba02..7019d0a 100755
--- a/t/t1013-read-tree-submodule.sh
+++ b/t/t1013-read-tree-submodule.sh
@@ -5,7 +5,6 @@ test_description='read-tree can handle submodules'
 . ./test-lib.sh
 . "$TEST_DIRECTORY"/lib-submodule-update.sh
 
-KNOWN_FAILURE_SUBMODULE_RECURSIVE_NESTED=1
 KNOWN_FAILURE_DIRECTORY_SUBMODULE_CONFLICTS=1
 KNOWN_FAILURE_SUBMODULE_OVERWRITE_IGNORED_UNTRACKED=1
 
diff --git a/t/t2013-checkout-submodule.sh b/t/t2013-checkout-submodule.sh
index e8f70b8..aa35223 100755
--- a/t/t2013-checkout-submodule.sh
+++ b/t/t2013-checkout-submodule.sh
@@ -64,7 +64,6 @@ test_expect_success '"checkout <submodule>" honors submodule.*.ignore from .git/
 '
 
 KNOWN_FAILURE_DIRECTORY_SUBMODULE_CONFLICTS=1
-KNOWN_FAILURE_SUBMODULE_RECURSIVE_NESTED=1
 test_submodule_switch_recursing "git checkout --recurse-submodules"
 
 test_submodule_forced_switch_recursing "git checkout -f --recurse-submodules"
-- 
cgit v0.10.2-6-g49f6