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From: Jeff King <peff@peff.net>
To: Michael Haggerty <mhagger@alum.mit.edu>
Cc: "Junio C Hamano" <gitster@pobox.com>,
	"Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>,
	"Stefan Beller" <sbeller@google.com>,
	"Ævar Arnfjörð Bjarmason" <avarab@gmail.com>,
	"David Turner" <novalis@novalis.org>,
	"Brandon Williams" <bmwill@google.com>,
	"Johannes Sixt" <j6t@kdbg.org>, "Øyvind Holm" <sunny@sunbase.org>,
	"Linus Torvalds" <torvalds@linux-foundation.org>,
	git@vger.kernel.org
Subject: Re: [PATCH 1/2] for_each_bisect_ref(): don't trim refnames
Date: Wed, 14 Jun 2017 05:22:57 -0400	[thread overview]
Message-ID: <20170614092256.c3fmfcokuwbbcvbz@sigill.intra.peff.net> (raw)
In-Reply-To: <3615deefe90bebe746618b04c055a466a442f85b.1497430232.git.mhagger@alum.mit.edu>

On Wed, Jun 14, 2017 at 11:07:26AM +0200, Michael Haggerty wrote:

> `for_each_bisect_ref()` is called by `for_each_bad_bisect_ref()` with
> a term "bad". This used to make it call `for_each_ref_in_submodule()`
> with a prefix "refs/bisect/bad". But the latter is the name of the
> reference that is being sought, so the empty string was being passed
> to the callback as the trimmed refname. Moreover, this questionable
> practice was turned into an error by
> 
>     b9c8e7f2fb prefix_ref_iterator: don't trim too much, 2017-05-22
> 
> It makes more sense (and agrees better with the documentation of
> `--bisect`) for the callers to receive the full reference names. So
> 
> * Add a new function, `for_each_fullref_in_submodule()`, to the refs
>   API.

You might want to mention that this is really just a hole in the
existing API. We have for_each_ref_in_submodule() and
for_each_fullref_in(), but not the missing link.

I don't think that makes it any more or less correct, but I thought at
first you had to invent a new function totally.

> * Change `for_each_bad_bisect_ref()` to call the new function rather
>   than `for_each_ref_in_submodule()`.
> 
> Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
> ---
>  refs.c     | 12 ++++++++++++
>  refs.h     |  5 ++++-
>  revision.c |  2 +-
>  3 files changed, 17 insertions(+), 2 deletions(-)

The change itself looks fine to me.

Since we obviously don't have even a single test for "--bisect", that
might be worth adding.

-Peff

  reply	other threads:[~2017-06-14  9:27 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-06-14  0:06 [BUG] b9c8e7f2fb6e breaks git bisect visualize Øyvind A. Holm
2017-06-14  8:36 ` Michael Haggerty
2017-06-14  9:07   ` [PATCH 0/2] Fix a refname trimming problem in `log --bisect` Michael Haggerty
2017-06-14  9:07     ` [PATCH 1/2] for_each_bisect_ref(): don't trim refnames Michael Haggerty
2017-06-14  9:22       ` Jeff King [this message]
2017-06-14  9:32         ` Jeff King
2017-06-14 10:05           ` Junio C Hamano
2017-06-15 22:26       ` Junio C Hamano
2017-06-14  9:07     ` [PATCH 2/2] prefix_ref_iterator_advance(): relax the check of trim length Michael Haggerty
2017-06-14  9:24     ` [PATCH 0/2] Fix a refname trimming problem in `log --bisect` Jeff King
2017-06-14 10:09     ` Junio C Hamano
2017-06-14  9:18   ` [BUG] b9c8e7f2fb6e breaks git bisect visualize Jeff King

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