Re: Question about get_cached_commit_buffer()

From: Junio C Hamano <gitster@pobox.com>
Date: Feb 21, 2018, 22:22 UTC
Message-ID: <xmqqtvuax9te.fsf@gitster-ct.c.googlers.com>
In-Reply-To: <20180221184811.GD4333@sigill.intra.peff.net>

Jeff King <peff@peff.net> writes:

Show 6 quoted lines

> I think that repeating the oid is intentional; the point is to dump how
> the traversal code is hitting the endpoints, even if we do so multiple
> times.
>
> The --oneline behavior just looks like a bug. I think --format is broken
> with --show-all, too (it does not show anything!).

I do not know about the --format thing, but the part about --oneline being a bug is correct. I've known about the oneline that does not show anything other than the oid (not even end-of-line) for unparsed commits for a long time---I just didn't bother looking into fixing it exactly because this is only a debugging aid ;-)

Show 9 quoted lines

> Though I think it would be equally correct to have set_commit_buffer()
> just throw away the existing cache entry and replace it with this one. I
> don't think there's a real reason to prefer the old to the new. And that
> might be worth doing if it would let us drop get_cached_commit_buffer()
> as a public function. But...
> ...
> In my opinion it's not really worth trying to make it private. The
> confusion you're fixing in the first two calls is not due to a bad API,
> but due to some subtly confusing logic in that code's use of the API. ;)

Yup.

> So I'd probably do this:
> ...

Makes sense to me.