Re: [PATCH v8 1/2] submodule refactor: use git_pathdup_submodule() in add_submodule_odb()

> 
> Now that we have strbuf_git_path_submodule(), is there any reason to
> switch this away from a strbuf?
> 
> That saves us a bunch of strlen calls, and it makes the diff way
> shorter. My ulterior motive is that the result also conflicts a lot less
> with some patches I'm about to post to harden the malloc and strcpy
> calls below.
> 
> That would make your patch look something like:
> 
> diff --git a/submodule.c b/submodule.c
> index 245ed4d..5e5a46f 100644
> --- a/submodule.c
> +++ b/submodule.c
> @@ -122,15 +122,8 @@ static int add_submodule_odb(const char *path)
>  	struct strbuf objects_directory = STRBUF_INIT;
>  	struct alternate_object_database *alt_odb;
>  	int ret = 0;
> -	const char *git_dir;
>  
> -	strbuf_addf(&objects_directory, "%s/.git", path);
> -	git_dir = read_gitfile(objects_directory.buf);
> -	if (git_dir) {
> -		strbuf_reset(&objects_directory);
> -		strbuf_addstr(&objects_directory, git_dir);
> -	}
> -	strbuf_addstr(&objects_directory, "/objects/");
> +	strbuf_git_path_submodule(&objects_directory, path, "objects/");
>  	if (!is_directory(objects_directory.buf)) {
>  		ret = -1;
>  		goto done;
> 
> -Peff