[PATCH] grep: remove "repo" arg from non-supporting funcs

[Jonathan Tan <jonathantanmy@google.com>]

As part of commit f9ee2fcdfa ("grep: recurse in-process using 'struct
repository'", 2017-08-02), many functions in builtin/grep.c were
converted to also take "struct repository *" arguments. Among them were
grep_object() and grep_objects().

However, at least grep_objects() was converted incompletely - it calls
gitmodules_config_oid(), which references the_repository.

But it turns out that the conversion was extraneous anyway - there has
been no user-visible effect - because grep_objects() is never invoked
except with the_repository.

Revert the changes to grep_objects() and grep_object() (which conversion
is also extraneous) to show that both these functions do not support
repositories other than the_repository.

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
---
Patch 1/5 of your series is obviously correct.

I investigated the change to grep_objects() in patch 2/5, and here is a
patch summarizing my findings. Consider including this patch before 2/5
(or before 1/5). You'll probably need to write
"submodule_free(the_repository);" instead of what you have currently,
but other than that, I don't think this affects your patch set much.
---
 builtin/grep.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/builtin/grep.c b/builtin/grep.c
index 789a89133..f286f2375 100644
--- a/builtin/grep.c
+++ b/builtin/grep.c
@@ -601,8 +601,7 @@ static int grep_tree(struct grep_opt *opt, const struct pathspec *pathspec,
 }
 
 static int grep_object(struct grep_opt *opt, const struct pathspec *pathspec,
-		       struct object *obj, const char *name, const char *path,
-		       struct repository *repo)
+		       struct object *obj, const char *name, const char *path)
 {
 	if (obj->type == OBJ_BLOB)
 		return grep_oid(opt, &obj->oid, name, 0, path);
@@ -629,7 +628,7 @@ static int grep_object(struct grep_opt *opt, const struct pathspec *pathspec,
 		}
 		init_tree_desc(&tree, data, size);
 		hit = grep_tree(opt, pathspec, &tree, &base, base.len,
-				obj->type == OBJ_COMMIT, repo);
+				obj->type == OBJ_COMMIT, the_repository);
 		strbuf_release(&base);
 		free(data);
 		return hit;
@@ -638,7 +637,6 @@ static int grep_object(struct grep_opt *opt, const struct pathspec *pathspec,
 }
 
 static int grep_objects(struct grep_opt *opt, const struct pathspec *pathspec,
-			struct repository *repo,
 			const struct object_array *list)
 {
 	unsigned int i;
@@ -654,8 +652,8 @@ static int grep_objects(struct grep_opt *opt, const struct pathspec *pathspec,
 			submodule_free();
 			gitmodules_config_oid(&real_obj->oid);
 		}
-		if (grep_object(opt, pathspec, real_obj, list->objects[i].name, list->objects[i].path,
-				repo)) {
+		if (grep_object(opt, pathspec, real_obj, list->objects[i].name,
+				list->objects[i].path)) {
 			hit = 1;
 			if (opt->status_only)
 				break;
@@ -1107,7 +1105,7 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
 		if (cached)
 			die(_("both --cached and trees are given."));
 
-		hit = grep_objects(&opt, &pathspec, the_repository, &list);
+		hit = grep_objects(&opt, &pathspec, &list);
 	}
 
 	if (num_threads)
-- 
2.16.0.rc0.35.ga4d78ce26