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[PATCH 3/3] Introduce submodule.recurse option




Any command that understands the boolean --recurse-submodule=[true/false]
can have its default changed to true, by setting the submodule.recurse
option.

git-push takes a --recurse-submodule argument but it is not boolean,
hence it is not included (yet?).

Signed-off-by: Stefan Beller <sbeller@xxxxxxxxxx>
---
 Documentation/config.txt    |  5 +++++
 builtin/checkout.c          |  8 +++-----
 submodule.c                 |  7 ++++++-
 t/lib-submodule-update.sh   | 12 ++++++++++++
 t/t5526-fetch-submodules.sh | 10 ++++++++++
 5 files changed, 36 insertions(+), 6 deletions(-)

diff --git a/Documentation/config.txt b/Documentation/config.txt
index 475e874d51..e367becf72 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -3063,6 +3063,11 @@ submodule.active::
 	submodule's path to determine if the submodule is of interest to git
 	commands.
 
+submodule.recurse::
+	Specifies if commands recurse into submodules by default. This
+	applies to all commands that have a `--recurse-submodules` option.
+	Defaults to false.
+
 submodule.fetchJobs::
 	Specifies how many submodules are fetched/cloned at the same time.
 	A positive integer allows up to that number of submodules fetched
diff --git a/builtin/checkout.c b/builtin/checkout.c
index 2787b343b1..e4bd93c9cd 100644
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -1195,6 +1195,7 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
 	opts.show_progress = -1;
 
 	gitmodules_config();
+	load_submodule_config();
 	git_config(git_checkout_config, &opts);
 
 	opts.track = BRANCH_TRACK_UNSPECIFIED;
@@ -1214,11 +1215,8 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
 		git_xmerge_config("merge.conflictstyle", conflict_style, NULL);
 	}
 
-	if (recurse_submodules != RECURSE_SUBMODULES_OFF) {
-		load_submodule_config();
-		if (recurse_submodules != RECURSE_SUBMODULES_DEFAULT)
-			set_config_update_recurse_submodules(recurse_submodules);
-	}
+	if (recurse_submodules != RECURSE_SUBMODULES_DEFAULT)
+		set_config_update_recurse_submodules(recurse_submodules);
 
 	if ((!!opts.new_branch + !!opts.new_branch_force + !!opts.new_orphan_branch) > 1)
 		die(_("-b, -B and --orphan are mutually exclusive"));
diff --git a/submodule.c b/submodule.c
index 14ea405048..000060a253 100644
--- a/submodule.c
+++ b/submodule.c
@@ -91,7 +91,12 @@ int update_path_in_gitmodules(const char *oldpath, const char *newpath)
 
 static int submodule_config(const char *var, const char *value, void *cb)
 {
-	if (!strcmp(var, "submodule.fetchjobs")) {
+	if (!strcmp(var, "submodule.recurse")) {
+		int v = git_config_bool(var, value) ?
+			RECURSE_SUBMODULES_ON : RECURSE_SUBMODULES_OFF;
+		config_fetch_recurse_submodules = v;
+		config_update_recurse_submodules = v;
+	} else if (!strcmp(var, "submodule.fetchjobs")) {
 		submodule_config_reading = SUBMODULE_CONFIG_EXISTS;
 		parallel_jobs = git_config_int(var, value);
 		if (parallel_jobs < 0)
diff --git a/t/lib-submodule-update.sh b/t/lib-submodule-update.sh
index 0f70b5ec7b..b30164339e 100755
--- a/t/lib-submodule-update.sh
+++ b/t/lib-submodule-update.sh
@@ -990,6 +990,18 @@ test_submodule_switch_recursing () {
 		)
 	'
 
+	test_expect_success "git -c submodule.recurse=true $cmd_args --recurse-submodules: modified submodule updates submodule work tree" '
+		prolog &&
+		reset_work_tree_to_interested add_sub1 &&
+		(
+			cd submodule_update &&
+			git branch -t modify_sub1 origin/modify_sub1 &&
+			git -c submodule.recurse=true $cmd_args --recurse-submodules modify_sub1 &&
+			test_superproject_content origin/modify_sub1 &&
+			test_submodule_content sub1 origin/modify_sub1
+		)
+	'
+
 	# Updating a submodule to an invalid sha1 doesn't update the
 	# superproject nor the submodule's work tree.
 	test_expect_success "$command: updating to a missing submodule commit fails" '
diff --git a/t/t5526-fetch-submodules.sh b/t/t5526-fetch-submodules.sh
index f3b0a8d30a..162baf101f 100755
--- a/t/t5526-fetch-submodules.sh
+++ b/t/t5526-fetch-submodules.sh
@@ -71,6 +71,16 @@ test_expect_success "fetch --recurse-submodules recurses into submodules" '
 	test_i18ncmp expect.err actual.err
 '
 
+test_expect_success "submodule.recurse option triggers recursive fetch" '
+	add_upstream_commit &&
+	(
+		cd downstream &&
+		git -c submodule.recurse fetch >../actual.out 2>../actual.err
+	) &&
+	test_must_be_empty actual.out &&
+	test_i18ncmp expect.err actual.err
+'
+
 test_expect_success "fetch --recurse-submodules -j2 has the same output behaviour" '
 	add_upstream_commit &&
 	(
-- 
2.13.0.18.g7d86cc8ba0