[PATCH 7/9] builtin/for-each-ref: stop using `the_repository`

[Usman Akinyemi <usmanakinyemi202@gmail.com>]

Remove the_repository global variable in favor of the repository
argument that gets passed in "builtin/for-each-ref.c".

When `-h` is passed to the command outside a Git repository, the
`run_builtin()` will call the `cmd_for_each_ref()` function with `repo`
set to NULL and then early in the function, `parse_options()` call will
give the options help and exit.

Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Usman Akinyemi <usmanakinyemi202@gmail.com>
---
 builtin/for-each-ref.c  | 5 ++---
 t/t6300-for-each-ref.sh | 7 +++++++
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/builtin/for-each-ref.c b/builtin/for-each-ref.c
index 8085ebd8fe..3d2207ec77 100644
--- a/builtin/for-each-ref.c
+++ b/builtin/for-each-ref.c
@@ -1,4 +1,3 @@
-#define USE_THE_REPOSITORY_VARIABLE
 #include "builtin.h"
 #include "commit.h"
 #include "config.h"
@@ -20,7 +19,7 @@ static char const * const for_each_ref_usage[] = {
 int cmd_for_each_ref(int argc,
 		     const char **argv,
 		     const char *prefix,
-		     struct repository *repo UNUSED)
+		     struct repository *repo)
 {
 	struct ref_sorting *sorting;
 	struct string_list sorting_options = STRING_LIST_INIT_DUP;
@@ -63,7 +62,7 @@ int cmd_for_each_ref(int argc,
 
 	format.format = "%(objectname) %(objecttype)\t%(refname)";
 
-	git_config(git_default_config, NULL);
+	repo_config(repo, git_default_config, NULL);
 
 	/* Set default (refname) sorting */
 	string_list_append(&sorting_options, "refname");
diff --git a/t/t6300-for-each-ref.sh b/t/t6300-for-each-ref.sh
index a5c7794385..9b4f4306c4 100755
--- a/t/t6300-for-each-ref.sh
+++ b/t/t6300-for-each-ref.sh
@@ -292,6 +292,13 @@ test_expect_success 'Check invalid atoms names are errors' '
 	test_must_fail git for-each-ref --format="%(INVALID)" refs/heads
 '
 
+test_expect_success 'for-each-ref does not crash with -h' '
+	test_expect_code 129 git for-each-ref -h >usage &&
+	test_grep "[Uu]sage: git for-each-ref " usage &&
+	test_expect_code 129 nongit git for-each-ref -h >usage &&
+	test_grep "[Uu]sage: git for-each-ref " usage
+'
+
 test_expect_success 'Check format specifiers are ignored in naming date atoms' '
 	git for-each-ref --format="%(authordate)" refs/heads &&
 	git for-each-ref --format="%(authordate:default) %(authordate)" refs/heads &&
-- 
2.48.1