Function modify_pattern_list

builtin/sparse-checkout.c:686–723

}

static int modify_pattern_list(struct repository *repo,
			       struct strvec *args, int use_stdin,
			       enum modify_type m)
{
	int result;
	int changed_config = 0;
	struct pattern_list *pl = xcalloc(1, sizeof(*pl));
	struct repo_config_values *cfg = repo_config_values(the_repository);

	switch (m) {
	case ADD:
		if (cfg->core_sparse_checkout_cone)
			add_patterns_cone_mode(args->nr, args->v, pl, use_stdin);
		else
			add_patterns_literal(args->nr, args->v, pl, use_stdin);
		break;

	case REPLACE:
		add_patterns_from_input(pl, args->nr, args->v,
					use_stdin ? stdin : NULL);
		break;
	}

	if (!cfg->apply_sparse_checkout) {
		set_config(repo, MODE_ALL_PATTERNS);
		cfg->apply_sparse_checkout = 1;
		changed_config = 1;
	}

	result = write_patterns_and_update(repo, pl);

	if (result && changed_config)
		set_config(repo, MODE_NO_PATTERNS);

	clear_pattern_list(pl);
	free(pl);
	return result;
}

static void sanitize_paths(struct repository *repo,
			   struct strvec *args,