[PATCH 4/5] builtin/worktree: add support for multiple post-checkout hooks

["brian m. carlson" <sandals@crustytoothpaste.net>]

Add support for multiple post-checkout hooks. We test only one possible
path in the multiple hook case because the same code path is used for
all checkouts and we know the hooks work from earlier assertions.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
---
 builtin/worktree.c            | 40 ++++++++++++++++++++++-------------
 t/t5403-post-checkout-hook.sh |  8 +++++++
 2 files changed, 33 insertions(+), 15 deletions(-)

diff --git a/builtin/worktree.c b/builtin/worktree.c
index d2a7e2f3f1..3126fa3a82 100644
--- a/builtin/worktree.c
+++ b/builtin/worktree.c
@@ -395,21 +395,31 @@ static int add_worktree(const char *path, const char *refname,
 	 * is_junk is cleared, but do return appropriate code when hook fails.
 	 */
 	if (!ret && opts->checkout) {
-		const char *hook = find_hook("post-checkout");
-		if (hook) {
-			const char *env[] = { "GIT_DIR", "GIT_WORK_TREE", NULL };
-			cp.git_cmd = 0;
-			cp.no_stdin = 1;
-			cp.stdout_to_stderr = 1;
-			cp.dir = path;
-			cp.env = env;
-			cp.argv = NULL;
-			cp.trace2_hook_name = "post-checkout";
-			argv_array_pushl(&cp.args, absolute_path(hook),
-					 oid_to_hex(&null_oid),
-					 oid_to_hex(&commit->object.oid),
-					 "1", NULL);
-			ret = run_command(&cp);
+		struct string_list *hooks;
+		hooks = find_hooks("post-checkout");
+		if (hooks) {
+			struct string_list_item *p;
+			struct child_process cp;
+			for_each_string_list_item(p, hooks) {
+				const char *env[] = { "GIT_DIR", "GIT_WORK_TREE", NULL };
+				child_process_init(&cp);
+
+				cp.git_cmd = 0;
+				cp.no_stdin = 1;
+				cp.stdout_to_stderr = 1;
+				cp.dir = path;
+				cp.env = env;
+				cp.argv = NULL;
+				cp.trace2_hook_name = "post-checkout";
+				argv_array_pushl(&cp.args, absolute_path(p->string),
+						 oid_to_hex(&null_oid),
+						 oid_to_hex(&commit->object.oid),
+						 "1", NULL);
+				ret = run_command(&cp);
+				if (ret)
+					break;
+			}
+			free_hooks(hooks);
 		}
 	}
 
diff --git a/t/t5403-post-checkout-hook.sh b/t/t5403-post-checkout-hook.sh
index a39b3b5c78..aa265ce610 100755
--- a/t/t5403-post-checkout-hook.sh
+++ b/t/t5403-post-checkout-hook.sh
@@ -5,6 +5,7 @@
 
 test_description='Test the post-checkout hook.'
 . ./test-lib.sh
+. "$TEST_DIRECTORY/lib-hooks.sh"
 
 test_expect_success setup '
 	mkdir -p .git/hooks &&
@@ -73,4 +74,11 @@ test_expect_success 'post-checkout hook is triggered by clone' '
 	test -f clone3/.git/post-checkout.args
 '
 
+cmd_rebase () {
+	git checkout -B hook-test rebase-on-me^ &&
+	git rebase rebase-on-me
+}
+
+test_multiple_hooks post-checkout cmd_rebase
+
 test_done