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From: Junio C Hamano <gitster@pobox.com>
To: Victoria Dye <vdye@github.com>
Cc: Shuqi Liang <cheskaqiqi@gmail.com>,
	git@vger.kernel.org, derrickstolee@github.com
Subject: Re: [RFC][PATCH V1] diff-tree: integrate with sparse index
Date: Tue, 16 May 2023 16:14:05 -0700	[thread overview]
Message-ID: <xmqqsfbvswci.fsf@gitster.g> (raw)
In-Reply-To: <fa24482c-7c48-9b7f-5d97-3dbf9822728c@github.com> (Victoria Dye's message of "Tue, 16 May 2023 14:19:04 -0700")

Victoria Dye <vdye@github.com> writes:

> Longer version: 

Thanks, as usual, for a great review.  A lot of the stuff you wrote
should inspire and result in an improved log message that explains
why this change is sufficient to teach diff-tree to take advantage
of the sparse index.

> However, 'DIFF_SETUP_USE_SIZE_CACHE' seems to be unused as of 6e0b8ed6d35
> (diff.c: do not use a separate "size cache"., 2007-05-07) and nothing about
> 'detect_rename' otherwise indicates index usage, so AFAICT that whole
> condition can be dropped (along with DIFF_SETUP_USE_SIZE_CACHE,
> DIFF_SETUP_REVERSE, and diff_options.setup).

True.  The size cache does not exist anymore.  6b5ee137 (Diff
clean-up., 2005-09-21) restructured the command line option parsing
quite a bit, and we lost DIFF_SETUP_REVERSE, which is a bit that
gets OR'ed in to a file-scope diff_setup_opt static of each of the
command in the diff family.  The bit and the diff_setup_opt variable
got replaced with members of "struct diff_options", and I should
have removed the macro at the same time.

> Note that, if you want to make
> that change in this series, it should be done in a separate patch _before_
> this one (since dropping the deprecated setup infrastructure isn't really
> part of the sparse index integration).

Or after this one, perhaps?  I agree that the clean-up opportunity
you found is very much unrelated to the work to teach diff-tree to
take advantage of the sparse index.

THanks.

  reply	other threads:[~2023-05-16 23:14 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-15 19:18 [RFC][PATCH V1] diff-tree: integrate with sparse index Shuqi Liang
2023-05-16 21:19 ` Victoria Dye
2023-05-16 23:14   ` Junio C Hamano [this message]
2023-05-17 18:47     ` Victoria Dye
2023-05-18 15:44 ` [PATCH v2] " Shuqi Liang
2023-05-22 19:07   ` Victoria Dye
2023-05-23  4:38     ` Junio C Hamano

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