Jeff Hostetler <git@xxxxxxxxxxxxxxxxx> writes:
> - if (stat_tracking_info(branch, &num_ours,
> - &num_theirs, NULL)) {
> + if (stat_tracking_info(branch, &num_ours, &num_theirs,
> + NULL, AHEAD_BEHIND_FULL) < 0) {
> ...
> - if (stat_tracking_info(branch, &num_ours,
> - &num_theirs, NULL))
> + if (stat_tracking_info(branch, &num_ours, &num_theirs,
> + NULL, AHEAD_BEHIND_FULL) < 0)
Mental note: any code that reacted to stat_tracking_info() returning
non-zero was reacting to "no useful info in num_{ours,theirs}".
They now have to compare the returned value with "< 0" for the same
purpose.
> ...
> * Returns -1 if num_ours and num_theirs could not be filled in (e.g., no
> - * upstream defined, or ref does not exist), 0 otherwise.
> + * upstream defined, or ref does not exist). Returns 0 if the commits are
> + * identical. Returns 1 if commits are different.
> */
> int stat_tracking_info(struct branch *branch, int *num_ours, int *num_theirs,
> - const char **upstream_name)
> + const char **upstream_name, enum ahead_behind_flags abf)
> {
> struct object_id oid;
> struct commit *ours, *theirs;
> @@ -2019,6 +2026,8 @@ int stat_tracking_info(struct branch *branch, int *num_ours, int *num_theirs,
> *num_theirs = *num_ours = 0;
> return 0;
> }
> + if (abf == AHEAD_BEHIND_QUICK)
> + return 1;
> ...
> argv_array_clear(&argv);
> - return 0;
> + return 1;
> }
When a caller gets +1 from the function, it is not safe to peek into
*num_{ours,theirs} if it passed _QUICK.
> @@ -2064,7 +2073,8 @@ int format_tracking_info(struct branch *branch, struct strbuf *sb)
> - if (stat_tracking_info(branch, &ours, &theirs, &full_base) < 0) {
> + if (stat_tracking_info(branch, &ours, &theirs, &full_base,
> + AHEAD_BEHIND_FULL) < 0) {
Sane conversion to the new return value convention.
> diff --git a/wt-status.c b/wt-status.c
> index 94e5eba..8f7fdc6 100644
> --- a/wt-status.c
> +++ b/wt-status.c
> @@ -1791,7 +1791,8 @@ static void wt_shortstatus_print_tracking(struct wt_status *s)
>
> color_fprintf(s->fp, branch_color_local, "%s", branch_name);
>
> - if (stat_tracking_info(branch, &num_ours, &num_theirs, &base) < 0) {
> + if (stat_tracking_info(branch, &num_ours, &num_theirs, &base,
> + AHEAD_BEHIND_FULL) < 0) {
Ditto.
> @@ -1928,7 +1929,8 @@ static void wt_porcelain_v2_print_tracking(struct wt_status *s)
> /* Lookup stats on the upstream tracking branch, if set. */
> branch = branch_get(branch_name);
> base = NULL;
> - ab_info = (stat_tracking_info(branch, &nr_ahead, &nr_behind, &base) == 0);
> + ab_info = (stat_tracking_info(branch, &nr_ahead, &nr_behind,
> + &base, AHEAD_BEHIND_FULL) >= 0);
If a later step plans to (conditionally) allow _QUICK to be passed
here, this conversion is questionable, because ab_info being true
no longer is a sign that nr_{ahead,behind} are valid.
I suspect that moving the "s/ab_info/sti/" bits around here from
step [2/5] to this commit may make the result after this patch more
consistent, but it is not a big deal either way.
> if (base) {
> base = shorten_unambiguous_ref(base, 0);
> fprintf(s->fp, "# branch.upstream %s%c", base, eol);
