From: Elijah Newren <newren@gmail.com>
To: Derrick Stolee <stolee@gmail.com>
Cc: "Derrick Stolee via GitGitGadget" <gitgitgadget@gmail.com>,
"Git Mailing List" <git@vger.kernel.org>,
"Junio C Hamano" <gitster@pobox.com>,
"Matheus Tavares Bernardino" <matheus.bernardino@usp.br>,
"Johannes Schindelin" <Johannes.Schindelin@gmx.de>,
"Eric Sunshine" <sunshine@sunshineco.com>,
"René Scharfe" <l.s.r@web.de>,
"Derrick Stolee" <derrickstolee@github.com>,
"Derrick Stolee" <dstolee@microsoft.com>
Subject: Re: [PATCH v4 10/10] sparse-checkout: add config to disable deleting dirs
Date: Mon, 30 Aug 2021 13:11:28 -0700 [thread overview]
Message-ID: <CABPp-BFT31Gj3WkhYQzaT2_efzr2c2viReLNq63_MAQiWAc4Fw@mail.gmail.com> (raw)
In-Reply-To: <d63d5d18-bdb3-e13b-ae36-e7e6cf10be39@gmail.com>
On Mon, Aug 30, 2021 at 6:30 AM Derrick Stolee <stolee@gmail.com> wrote:
>
> On 8/27/2021 4:58 PM, Elijah Newren wrote:
> > On Tue, Aug 24, 2021 at 2:51 PM Derrick Stolee via GitGitGadget
> > <gitgitgadget@gmail.com> wrote:
> >>
> >> From: Derrick Stolee <dstolee@microsoft.com>
> >>
> >> The clean_tracked_sparse_directories() method deletes the tracked
> >> directories that go out of scope when the sparse-checkout cone changes,
> >> at least in cone mode. This is new behavior, but is recommended based on
> >> our understanding of how users are interacting with the feature in most
> >> cases.
> >>
> >> It is possible that some users will object to the new behavior, so
> >> create a new configuration option 'index.deleteSparseDirectories' that
> >> can be set to 'false' to make clean_tracked_sparse_directories() do
> >> nothing. This will keep all untracked files in the working tree and
> >> cause performance problems with the sparse index, but those trade-offs
> >> are for the user to decide.
> >
> > I'm not sold that we need anything here, and it sounds like this is
> > all being added based on a theoretical concern. I might not object
> > too much normally to trying to address theoretical conerns with new
> > features, but:
> >
> > * I'm a little concerned that we're adding a configuration option
> > (which live forever and are harder to work with
> > backward-compatibility-wise) rather than a command line flag.
>
> The issue with a command-line flag is that it would need to be added
> to all the commands that reapply the sparse-checkout definition.
> Maybe that's just the 'git sparse-checkout (init|set|add|reapply)'
> and 'git read-tree' commands, but are there other places where this
> logic might be applied in the future?
>
> Also, as more third-party tools integrate with sparse-checkout, I
> don't expect users to be directly involved in changing their cone,
> so any use of a command-line flag would need to be integrated into
> those tools. A config option applies this logic universally, when
> needed.
>
> > * It's not clear to me that the option name is what we want. For
> > example, git checkout has a --[no-]overwrite-ignored for overwriting
> > ignored files (or not) when switching to a different branch. git
> > merge has the same flags (though only the fast-forwarding backend
> > heeds it currently). This behavior is quite similar to that flag, and
> > has the same default of treating ignored files as expendable. Should
> > the naming be more similar?
>
> I'm open to changing the name to more closely match existing naming
> conventions, once we've decided if this should be included at all.
>
> > * It's not clear to me that the option has the right level of
> > implementation granularity. If someone wants ignored files to be
> > treated as important, should they need to set a
> > merge.no_overwrite_ignored AND a checkout.no_overwrite_ignored AND a
> > index.deleteSparseDirectories AND other names, or have one high-level
> > option that sets all of these behaviors?
>
> These cases have different meanings for why an ignored file is
> important. For merge and checkout, the argument is saying "don't
> overwrite ignored files if they are to be replaced by a tracked
> file". For sparse-checkout, the config is saying "don't delete
> ignored files that are leaving the sparse-checkout scope". I think
> it is meaningful to say that files that match the .gitignore
> patterns but are still tracked are deleted, because sparse-checkout
> removes all tracked files.
>
> I'm less convinced that there needs to be a meta-setting that covers
> all of these cases simultaneously.
>
> ---
>
> As for moving forward, I'm fine skipping this patch if there is no
> support for it. I just wanted to demonstrate that it could be done.
That's fair, and you certainly achieved that.
> Perhaps we wait for the theoretical concern to be a real one, as
> requested by a user with a legitimate reason to care?
Sounds good to me. Then we'll have a better frame of reference for
judging how the feature should be tailored as well.
next prev parent reply other threads:[~2021-08-30 20:11 UTC|newest]
Thread overview: 92+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-29 17:27 [PATCH 0/2] Sparse index: delete ignored files outside sparse cone Derrick Stolee via GitGitGadget
2021-07-29 17:27 ` [PATCH 1/2] t7519: rewrite sparse index test Derrick Stolee via GitGitGadget
2021-07-29 17:27 ` [PATCH 2/2] sparse-checkout: clear tracked sparse dirs Derrick Stolee via GitGitGadget
2021-07-30 13:52 ` Elijah Newren
2021-08-02 14:34 ` Derrick Stolee
2021-08-02 16:17 ` Elijah Newren
2021-08-05 1:55 ` Derrick Stolee
2021-08-05 3:54 ` Elijah Newren
2021-07-30 13:11 ` [PATCH 0/2] Sparse index: delete ignored files outside sparse cone Elijah Newren
2021-08-10 19:50 ` [PATCH v2 0/8] " Derrick Stolee via GitGitGadget
2021-08-10 19:50 ` [PATCH v2 1/8] t7519: rewrite sparse index test Derrick Stolee via GitGitGadget
2021-08-10 19:50 ` [PATCH v2 2/8] sparse-index: silently return when not using cone-mode patterns Derrick Stolee via GitGitGadget
2021-08-10 19:50 ` [PATCH v2 3/8] sparse-index: silently return when cache tree fails Derrick Stolee via GitGitGadget
2021-08-19 18:24 ` Elijah Newren
2021-08-20 15:04 ` Derrick Stolee
2021-08-10 19:50 ` [PATCH v2 4/8] unpack-trees: fix nested sparse-dir search Derrick Stolee via GitGitGadget
2021-08-10 19:50 ` [PATCH v2 5/8] sparse-checkout: create helper methods Derrick Stolee via GitGitGadget
2021-08-12 17:29 ` Derrick Stolee
2021-08-10 19:50 ` [PATCH v2 6/8] attr: be careful about sparse directories Derrick Stolee via GitGitGadget
2021-08-10 19:50 ` [PATCH v2 7/8] sparse-index: add SPARSE_INDEX_IGNORE_CONFIG flag Derrick Stolee via GitGitGadget
2021-08-10 19:50 ` [PATCH v2 8/8] sparse-checkout: clear tracked sparse dirs Derrick Stolee via GitGitGadget
2021-08-17 13:23 ` [PATCH v3 0/8] Sparse index: delete ignored files outside sparse cone Derrick Stolee via GitGitGadget
2021-08-17 13:23 ` [PATCH v3 1/8] t7519: rewrite sparse index test Derrick Stolee via GitGitGadget
2021-08-19 7:45 ` Johannes Schindelin
2021-08-20 15:09 ` Derrick Stolee
2021-08-20 16:40 ` Eric Sunshine
2021-08-17 13:23 ` [PATCH v3 2/8] sparse-index: silently return when not using cone-mode patterns Derrick Stolee via GitGitGadget
2021-08-17 13:23 ` [PATCH v3 3/8] sparse-index: silently return when cache tree fails Derrick Stolee via GitGitGadget
2021-08-17 13:23 ` [PATCH v3 4/8] unpack-trees: fix nested sparse-dir search Derrick Stolee via GitGitGadget
2021-08-19 8:01 ` Johannes Schindelin
2021-08-20 15:18 ` Derrick Stolee
2021-08-20 19:35 ` René Scharfe
2021-08-20 20:22 ` René Scharfe
2021-08-19 18:29 ` Elijah Newren
2021-08-17 13:23 ` [PATCH v3 5/8] sparse-checkout: create helper methods Derrick Stolee via GitGitGadget
2021-08-19 8:07 ` Johannes Schindelin
2021-08-20 15:30 ` Derrick Stolee
2021-08-17 13:23 ` [PATCH v3 6/8] attr: be careful about sparse directories Derrick Stolee via GitGitGadget
2021-08-19 8:11 ` Johannes Schindelin
2021-08-20 15:36 ` Derrick Stolee
2021-08-19 20:53 ` Elijah Newren
2021-08-20 15:39 ` Derrick Stolee
2021-08-20 16:05 ` Elijah Newren
2021-08-17 13:23 ` [PATCH v3 7/8] sparse-index: add SPARSE_INDEX_IGNORE_CONFIG flag Derrick Stolee via GitGitGadget
2021-08-18 18:59 ` Derrick Stolee
2021-08-17 13:23 ` [PATCH v3 8/8] sparse-checkout: clear tracked sparse dirs Derrick Stolee via GitGitGadget
2021-08-19 8:48 ` Johannes Schindelin
2021-08-20 15:49 ` Derrick Stolee
2021-08-20 16:15 ` Elijah Newren
2021-08-20 15:56 ` Elijah Newren
2021-08-23 20:00 ` Johannes Schindelin
2021-08-17 14:09 ` [PATCH v3 0/8] Sparse index: delete ignored files outside sparse cone Elijah Newren
2021-08-24 21:51 ` [PATCH v4 00/10] " Derrick Stolee via GitGitGadget
2021-08-24 21:51 ` [PATCH v4 01/10] t7519: rewrite sparse index test Derrick Stolee via GitGitGadget
2021-08-24 21:51 ` [PATCH v4 02/10] sparse-index: silently return when not using cone-mode patterns Derrick Stolee via GitGitGadget
2021-08-24 21:51 ` [PATCH v4 03/10] sparse-index: silently return when cache tree fails Derrick Stolee via GitGitGadget
2021-08-24 21:51 ` [PATCH v4 04/10] sparse-index: use WRITE_TREE_MISSING_OK Derrick Stolee via GitGitGadget
2021-08-27 21:33 ` Elijah Newren
2021-08-30 13:19 ` Derrick Stolee
2021-08-30 20:08 ` Elijah Newren
2021-08-24 21:51 ` [PATCH v4 05/10] unpack-trees: fix nested sparse-dir search Derrick Stolee via GitGitGadget
2021-08-24 22:21 ` René Scharfe
2021-08-25 1:09 ` Derrick Stolee
2021-08-24 21:51 ` [PATCH v4 06/10] sparse-checkout: create helper methods Derrick Stolee via GitGitGadget
2021-08-24 21:51 ` [PATCH v4 07/10] attr: be careful about sparse directories Derrick Stolee via GitGitGadget
2021-08-24 21:51 ` [PATCH v4 08/10] sparse-index: add SPARSE_INDEX_MEMORY_ONLY flag Derrick Stolee via GitGitGadget
2021-08-24 21:51 ` [PATCH v4 09/10] sparse-checkout: clear tracked sparse dirs Derrick Stolee via GitGitGadget
2021-08-24 21:51 ` [PATCH v4 10/10] sparse-checkout: add config to disable deleting dirs Derrick Stolee via GitGitGadget
2021-08-27 20:58 ` Elijah Newren
2021-08-30 13:30 ` Derrick Stolee
2021-08-30 20:11 ` Elijah Newren [this message]
2021-08-27 21:56 ` [PATCH v4 00/10] Sparse index: delete ignored files outside sparse cone Elijah Newren
2021-08-27 22:01 ` Elijah Newren
2021-08-30 13:34 ` Derrick Stolee
2021-08-30 20:14 ` Elijah Newren
2021-08-30 13:54 ` Derrick Stolee
2021-08-30 20:23 ` Elijah Newren
2021-09-08 1:42 ` [PATCH v5 0/9] " Derrick Stolee via GitGitGadget
2021-09-08 1:42 ` [PATCH v5 1/9] t7519: rewrite sparse index test Derrick Stolee via GitGitGadget
2021-09-08 1:42 ` [PATCH v5 2/9] sparse-index: silently return when not using cone-mode patterns Derrick Stolee via GitGitGadget
2021-09-08 1:42 ` [PATCH v5 3/9] unpack-trees: fix nested sparse-dir search Derrick Stolee via GitGitGadget
2021-09-08 1:42 ` [PATCH v5 4/9] sparse-index: silently return when cache tree fails Derrick Stolee via GitGitGadget
2021-09-08 1:42 ` [PATCH v5 5/9] sparse-index: use WRITE_TREE_MISSING_OK Derrick Stolee via GitGitGadget
2021-09-08 1:42 ` [PATCH v5 6/9] sparse-checkout: create helper methods Derrick Stolee via GitGitGadget
2021-09-08 1:42 ` [PATCH v5 7/9] attr: be careful about sparse directories Derrick Stolee via GitGitGadget
2021-09-08 1:42 ` [PATCH v5 8/9] sparse-index: add SPARSE_INDEX_MEMORY_ONLY flag Derrick Stolee via GitGitGadget
2021-09-08 1:42 ` [PATCH v5 9/9] sparse-checkout: clear tracked sparse dirs Derrick Stolee via GitGitGadget
2021-09-08 5:21 ` [PATCH v5 0/9] Sparse index: delete ignored files outside sparse cone Junio C Hamano
2021-09-08 6:56 ` Junio C Hamano
2021-09-08 11:39 ` Derrick Stolee
2021-09-08 16:11 ` Junio C Hamano
2021-09-08 5:30 ` Elijah Newren
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