Function format_tracking_info

remote.c:2375–2465

* Return true when there is anything to report, otherwise false. */

 * Return true when there is anything to report, otherwise false.
 */
int format_tracking_info(struct branch *branch, struct strbuf *sb,
			 enum ahead_behind_flags abf,
			 int show_divergence_advice)
{
	char *compare_branches = NULL;
	struct string_list branches = STRING_LIST_INIT_DUP;
	struct strset processed_refs = STRSET_INIT;
	int reported = 0;
	size_t i;
	const char *upstream_ref;
	const char *push_ref;

	repo_config_get_string(the_repository, "status.comparebranches",
			       &compare_branches);

	if (compare_branches) {
		string_list_split(&branches, compare_branches, " ", -1);
		string_list_remove_empty_items(&branches, 0);
	} else {
		string_list_append(&branches, "@{upstream}");
	}

	upstream_ref = branch_get_upstream(branch, NULL);
	push_ref = branch_get_push(branch, NULL);

	for (i = 0; i < branches.nr; i++) {
		char *full_ref;
		char *short_ref;
		int ours, theirs, cmp;
		int is_upstream, is_push;
		unsigned flags = 0;

		full_ref = resolve_compare_branch(branch,
						  branches.items[i].string);
		if (!full_ref)
			continue;

		if (!strset_add(&processed_refs, full_ref)) {
			free(full_ref);
			continue;
		}

		short_ref = refs_shorten_unambiguous_ref(
			get_main_ref_store(the_repository), full_ref, 0);

		is_upstream = upstream_ref && !strcmp(full_ref, upstream_ref);
		is_push = push_ref && !strcmp(full_ref, push_ref);

		if (is_upstream && (!push_ref || !strcmp(upstream_ref, push_ref)))
			is_push = 1;

		cmp = stat_branch_pair(branch->refname, full_ref,
				       &ours, &theirs, abf);

		if (cmp < 0) {
			if (is_upstream) {
				strbuf_addf(sb,
					_("Your branch is based on '%s', but the upstream is gone.\n"),