From: Elijah Newren <newren@gmail.com>
To: Junio C Hamano <gitster@pobox.com>
Cc: Elijah Newren via GitGitGadget <gitgitgadget@gmail.com>,
Git Mailing List <git@vger.kernel.org>,
Derrick Stolee <stolee@gmail.com>,
Lessley Dennington <lessleydennington@gmail.com>,
Victoria Dye <vdye@github.com>
Subject: Re: [PATCH v3 07/10] sparse-checkout: enable reapply to take --[no-]{cone,sparse-index}
Date: Mon, 13 Dec 2021 18:39:09 -0800 [thread overview]
Message-ID: <CABPp-BGq5-_84=hXqpxg5A7syauXYK_MBzgSY989d3KmR4rn-g@mail.gmail.com> (raw)
In-Reply-To: <xmqq1r2ge53u.fsf@gitster.g>
On Mon, Dec 13, 2021 at 10:23 AM Junio C Hamano <gitster@pobox.com> wrote:
>
> "Elijah Newren via GitGitGadget" <gitgitgadget@gmail.com> writes:
>
> > From: Elijah Newren <newren@gmail.com>
> >
> > Folks may want to switch to or from cone mode, or to or from a
> > sparse-index without changing their sparsity paths. Allow them to do so
> > using the reapply command.
>
> Interesting.
>
> Are there certain pattern that would make sense only in one of the
> modes but not the other? If there isn't any such pattern, this
> feature perfectly makes sense, I would think.
Good question.
Valid cone mode patterns are a strict subset of the possible sparsity
patterns. So, switching from cone to non-cone mode trivially makes
sense. Understanding why switching in the other direction is okay
takes a bit more understanding...
Stolee designed cone mode such that when it's active, and someone
edits .git/info/sparse-checkout and adds patterns of their own (which
users might do because that had been suggested for several years in
the read-tree docs -- and still is), then the code will print a
warning ("disabling cone pattern matching") and operate in non-cone
mode. As such, the sparsity does not "break" when they switch modes
if they have non-cone patterns; they'll just get warnings.
Further, we're making `reapply` consistent with `init` here. Stolee
made `init` usable for switching modes in an active sparse-checkout
(though it wasn't well documented, and it's slightly confusing to
users who might worry that they'll lose their sparsity patterns by
using `init`). We're just copying that ability from `init` over in
`reapply`, and recommending using the latter rather than the former.
> If an existing pattern changes its meaning between the old mode and
> the new mode, that is very much fine---that is what the user wanted
> to achieve by switching between the modes with "reapply".
>
> Thanks.
next prev parent reply other threads:[~2021-12-14 2:39 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-04 20:00 [PATCH 0/6] sparse-checkout: make set subsume init Elijah Newren via GitGitGadget
2021-12-04 20:00 ` [PATCH 1/6] sparse-checkout: pass use_stdin as a parameter instead of as a global Elijah Newren via GitGitGadget
2021-12-04 20:00 ` [PATCH 2/6] sparse-checkout: break apart functions for sparse_checkout_(set|add) Elijah Newren via GitGitGadget
2021-12-04 20:00 ` [PATCH 3/6] sparse-checkout: enable `set` to initialize sparse-checkout mode Elijah Newren via GitGitGadget
2021-12-04 21:40 ` Victoria Dye
2021-12-07 17:04 ` Elijah Newren
2021-12-07 20:36 ` Lessley Dennington
2021-12-07 16:42 ` Derrick Stolee
2021-12-07 18:18 ` Elijah Newren
2021-12-04 20:00 ` [PATCH 4/6] git-sparse-checkout.txt: update to document that set handles init Elijah Newren via GitGitGadget
2021-12-04 21:48 ` Victoria Dye
2021-12-07 16:45 ` Derrick Stolee
2021-12-07 17:06 ` Elijah Newren
2021-12-07 20:42 ` Lessley Dennington
2021-12-07 21:13 ` Elijah Newren
2021-12-07 22:36 ` Lessley Dennington
2021-12-04 20:00 ` [PATCH 5/6] Documentation: clarify/correct a few sparsity related statements Elijah Newren via GitGitGadget
2021-12-04 20:00 ` [PATCH 6/6] clone: avoid using deprecated `sparse-checkout init` Elijah Newren via GitGitGadget
2021-12-07 16:48 ` [PATCH 0/6] sparse-checkout: make set subsume init Derrick Stolee
2021-12-07 20:20 ` [PATCH v2 00/10] " Elijah Newren via GitGitGadget
2021-12-07 20:20 ` [PATCH v2 01/10] sparse-checkout: pass use_stdin as a parameter instead of as a global Elijah Newren via GitGitGadget
2021-12-07 20:20 ` [PATCH v2 02/10] sparse-checkout: break apart functions for sparse_checkout_(set|add) Elijah Newren via GitGitGadget
2021-12-07 20:20 ` [PATCH v2 03/10] sparse-checkout: add sanity-checks on initial sparsity state Elijah Newren via GitGitGadget
2021-12-07 20:20 ` [PATCH v2 04/10] sparse-checkout: disallow --no-stdin as an argument to set Elijah Newren via GitGitGadget
2021-12-07 20:20 ` [PATCH v2 05/10] sparse-checkout: split out code for tweaking settings config Elijah Newren via GitGitGadget
2021-12-07 20:20 ` [PATCH v2 06/10] sparse-checkout: enable `set` to initialize sparse-checkout mode Elijah Newren via GitGitGadget
2021-12-07 20:20 ` [PATCH v2 07/10] sparse-checkout: enable reapply to take --[no-]{cone,sparse-index} Elijah Newren via GitGitGadget
2021-12-07 20:20 ` [PATCH v2 08/10] git-sparse-checkout.txt: update to document init/set/reapply changes Elijah Newren via GitGitGadget
2021-12-07 20:20 ` [PATCH v2 09/10] Documentation: clarify/correct a few sparsity related statements Elijah Newren via GitGitGadget
2021-12-07 20:20 ` [PATCH v2 10/10] clone: avoid using deprecated `sparse-checkout init` Elijah Newren via GitGitGadget
2021-12-07 21:05 ` [PATCH v2 00/10] sparse-checkout: make set subsume init Derrick Stolee
2021-12-08 14:16 ` Victoria Dye
2021-12-10 3:56 ` [PATCH v3 " Elijah Newren via GitGitGadget
2021-12-10 3:56 ` [PATCH v3 01/10] sparse-checkout: pass use_stdin as a parameter instead of as a global Elijah Newren via GitGitGadget
2021-12-10 3:56 ` [PATCH v3 02/10] sparse-checkout: break apart functions for sparse_checkout_(set|add) Elijah Newren via GitGitGadget
2021-12-10 3:56 ` [PATCH v3 03/10] sparse-checkout: add sanity-checks on initial sparsity state Elijah Newren via GitGitGadget
2021-12-13 18:11 ` Junio C Hamano
2021-12-14 2:25 ` Elijah Newren
2021-12-10 3:56 ` [PATCH v3 04/10] sparse-checkout: disallow --no-stdin as an argument to set Elijah Newren via GitGitGadget
2021-12-10 3:56 ` [PATCH v3 05/10] sparse-checkout: split out code for tweaking settings config Elijah Newren via GitGitGadget
2021-12-10 3:56 ` [PATCH v3 06/10] sparse-checkout: enable `set` to initialize sparse-checkout mode Elijah Newren via GitGitGadget
2021-12-10 3:56 ` [PATCH v3 07/10] sparse-checkout: enable reapply to take --[no-]{cone,sparse-index} Elijah Newren via GitGitGadget
2021-12-13 18:23 ` Junio C Hamano
2021-12-14 2:39 ` Elijah Newren [this message]
2021-12-10 3:56 ` [PATCH v3 08/10] git-sparse-checkout.txt: update to document init/set/reapply changes Elijah Newren via GitGitGadget
2021-12-10 3:56 ` [PATCH v3 09/10] Documentation: clarify/correct a few sparsity related statements Elijah Newren via GitGitGadget
2021-12-10 3:56 ` [PATCH v3 10/10] clone: avoid using deprecated `sparse-checkout init` Elijah Newren via GitGitGadget
2021-12-14 4:09 ` [PATCH v4 00/10] sparse-checkout: make set subsume init Elijah Newren via GitGitGadget
2021-12-14 4:09 ` [PATCH v4 01/10] sparse-checkout: pass use_stdin as a parameter instead of as a global Elijah Newren via GitGitGadget
2021-12-14 4:09 ` [PATCH v4 02/10] sparse-checkout: break apart functions for sparse_checkout_(set|add) Elijah Newren via GitGitGadget
2021-12-14 4:09 ` [PATCH v4 03/10] sparse-checkout: add sanity-checks on initial sparsity state Elijah Newren via GitGitGadget
2021-12-14 4:09 ` [PATCH v4 04/10] sparse-checkout: disallow --no-stdin as an argument to set Elijah Newren via GitGitGadget
2021-12-14 4:09 ` [PATCH v4 05/10] sparse-checkout: split out code for tweaking settings config Elijah Newren via GitGitGadget
2021-12-14 4:09 ` [PATCH v4 06/10] sparse-checkout: enable `set` to initialize sparse-checkout mode Elijah Newren via GitGitGadget
2021-12-14 4:09 ` [PATCH v4 07/10] sparse-checkout: enable reapply to take --[no-]{cone,sparse-index} Elijah Newren via GitGitGadget
2021-12-23 0:47 ` Jiang Xin
2021-12-23 17:09 ` Elijah Newren
2021-12-23 19:09 ` Junio C Hamano
2021-12-14 4:09 ` [PATCH v4 08/10] git-sparse-checkout.txt: update to document init/set/reapply changes Elijah Newren via GitGitGadget
2021-12-14 4:09 ` [PATCH v4 09/10] Documentation: clarify/correct a few sparsity related statements Elijah Newren via GitGitGadget
2021-12-14 7:38 ` Bagas Sanjaya
2021-12-14 7:48 ` Elijah Newren
2021-12-14 4:09 ` [PATCH v4 10/10] clone: avoid using deprecated `sparse-checkout init` Elijah Newren via GitGitGadget
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