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From: Junio C Hamano <gitster@pobox.com>
To: Elijah Newren <newren@gmail.com>
Cc: Derrick Stolee <derrickstolee@github.com>,
	Christian Couder <christian.couder@gmail.com>,
	git@vger.kernel.org, Patrick Steinhardt <ps@pks.im>,
	Johannes Schindelin <Johannes.Schindelin@gmx.de>,
	John Cai <johncai86@gmail.com>,
	Christian Couder <chriscool@tuxfamily.org>
Subject: Re: [PATCH 11/14] replay: use standard revision ranges
Date: Mon, 17 Apr 2023 08:45:52 -0700	[thread overview]
Message-ID: <xmqqy1mqo6kv.fsf@gitster.g> (raw)
In-Reply-To: <CABPp-BGfG3VeY1gOugzig8PLan1AS66BMWnyFSOsLOy-zqLdXw@mail.gmail.com> (Elijah Newren's message of "Sat, 15 Apr 2023 12:07:10 -0700")

Elijah Newren <newren@gmail.com> writes:

>> For instance, can users pass multiple ranges?
>
> There's no such thing as multiple ranges for most commands (see
> f302c1e4aa0 ("revisions(7): clarify that most commands take a single
> revision range", 2021-05-18))
>
> However, users should absolutely be allowed to specify something like
>
>   $ git replay --onto new-base master..my-topic some-base..other-topic
>
> which is one revision range, and I'd expect replay to take commits in
> the history of either my-topic or other-topic, which are not in the
> history of either master or some-base, and replay them.

It is one revision range "^master ^some-base my-topic other-topic"
if we let traditional revision parser to work on them, and in many
topologies, it would mean something unexpected for users who thought
that the user gave two ranges.  E.g. some-base may be an ancestor of
master, in which case commits in the "some-base..master" range is
not included in the result.  Or some-base may be able to reach
my-topic, in which case no commits from master..my-topic range
appears in the result, etc.

But should we be forever limited by the "A..B is always equivalent
to ^A B"?

Shouldn't replaying master..my-topic and some-base..other-topic,
when some-base is an ancestor of master, replay two overlapping
range, possibly recreating some commits twice (when some-base falls
in between master..my-topic, for example), if the user is willing to
accept the consequences?

We can still keep the "so called 'range' is just commits that are
reachable from a positive end and are not reachable from any
negative end, and by definition there is no such thing as multiple
ranges" as an option for advanced users and trigger the semantics
when one negative end is written explicitly with ^A notation, but in
applications like cherry-pick where it is convenient to work on
multiple ranges, we may want to extend our worldview to allow A..B
C..D (especially when these two are distinct ranges---imagine the
case where B is an ancestor of C) to mean "we have two ranges, and
we mean the union of the commits in these two ranges".

We'd need to design carefully what should happen for trickier cases
like A..B C (does it mean the traditional "a single range of commits
that are reachable from either B or C, but never reachable from A",
or does it mean "the union of commits A..B that are reachable from B
but not from A and commits C that are reachable from C all the way
down to root"?), though.

  parent reply	other threads:[~2023-04-17 15:45 UTC|newest]

Thread overview: 208+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-04-07  7:24 [PATCH 00/14] Introduce new `git replay` command Christian Couder
2023-04-07  7:24 ` [PATCH 01/14] replay: introduce new builtin Christian Couder
2023-04-07  7:24 ` [PATCH 02/14] replay: start using parse_options API Christian Couder
2023-04-07  7:24 ` [PATCH 03/14] replay: die() instead of failing assert() Christian Couder
2023-04-07  7:24 ` [PATCH 04/14] replay: introduce pick_regular_commit() Christian Couder
2023-04-07  7:24 ` [PATCH 05/14] replay: don't simplify history Christian Couder
2023-04-07  7:24 ` [PATCH 06/14] replay: add an important FIXME comment about gpg signing Christian Couder
2023-04-07  7:24 ` [PATCH 07/14] replay: remove progress and info output Christian Couder
2023-04-07  7:24 ` [PATCH 08/14] replay: remove HEAD related sanity check Christian Couder
2023-04-07  7:24 ` [PATCH 09/14] replay: very coarse worktree updating Christian Couder
2023-04-07  7:24 ` [PATCH 10/14] replay: make it a minimal server side command Christian Couder
2023-04-07  7:24 ` [PATCH 11/14] replay: use standard revision ranges Christian Couder
2023-04-14 14:09   ` Derrick Stolee
2023-04-14 14:23     ` Derrick Stolee
2023-04-15 19:07       ` Elijah Newren
2023-04-16  5:28         ` Elijah Newren
2023-04-17 14:05         ` Derrick Stolee
2023-04-18  5:54           ` Elijah Newren
2023-04-18 13:10             ` Derrick Stolee
2023-04-20  4:53               ` Elijah Newren
2023-04-20 13:44                 ` Derrick Stolee
2023-04-23  1:18                   ` Elijah Newren
2023-04-24 15:23                     ` Derrick Stolee
2023-04-30  6:45                       ` Elijah Newren
2023-09-03 15:47                         ` Johannes Schindelin
2023-09-07  8:39                           ` Christian Couder
2023-09-07 10:22                             ` Johannes Schindelin
2023-04-17 15:45         ` Junio C Hamano [this message]
2023-04-18  5:58           ` Elijah Newren
2023-04-18  4:58       ` Elijah Newren
2023-04-15 18:30     ` Elijah Newren
2023-04-07  7:24 ` [PATCH 12/14] replay: introduce guess_new_base() Christian Couder
2023-04-07  7:24 ` [PATCH 13/14] replay: add different modes Christian Couder
2023-04-07  7:24 ` [PATCH 14/14] replay: stop assuming replayed branches do not diverge Christian Couder
2023-04-14 10:12 ` [PATCH 00/14] Introduce new `git replay` command Phillip Wood
2023-04-15 17:18   ` Elijah Newren
2023-04-14 17:39 ` Felipe Contreras
2023-04-15  6:44 ` Elijah Newren
2023-05-09 17:53 ` [PATCH v2 00/15] " Christian Couder
2023-05-09 17:53   ` [PATCH v2 01/15] t6429: remove switching aspects of fast-rebase Christian Couder
2023-05-09 17:53   ` [PATCH v2 02/15] replay: introduce new builtin Christian Couder
2023-05-09 17:53   ` [PATCH v2 03/15] replay: start using parse_options API Christian Couder
2023-05-09 17:53   ` [PATCH v2 04/15] replay: die() instead of failing assert() Christian Couder
2023-05-09 17:53   ` [PATCH v2 05/15] replay: introduce pick_regular_commit() Christian Couder
2023-05-09 17:53   ` [PATCH v2 06/15] replay: don't simplify history Christian Couder
2023-05-09 17:53   ` [PATCH v2 07/15] replay: add an important FIXME comment about gpg signing Christian Couder
2023-05-09 17:53   ` [PATCH v2 08/15] replay: remove progress and info output Christian Couder
2023-05-09 17:53   ` [PATCH v2 09/15] replay: remove HEAD related sanity check Christian Couder
2023-05-09 17:53   ` [PATCH v2 10/15] replay: make it a minimal server side command Christian Couder
2023-05-09 17:53   ` [PATCH v2 11/15] replay: use standard revision ranges Christian Couder
2023-05-09 17:53   ` [PATCH v2 12/15] replay: disallow revision specific options and pathspecs Christian Couder
2023-05-16  4:25     ` Elijah Newren
2023-05-09 17:53   ` [PATCH v2 13/15] replay: add --advance or 'cherry-pick' mode Christian Couder
2023-05-09 17:53   ` [PATCH v2 14/15] replay: add --contained to rebase contained branches Christian Couder
2023-05-16  4:26     ` Elijah Newren
2023-05-09 17:53   ` [PATCH v2 15/15] replay: stop assuming replayed branches do not diverge Christian Couder
2023-05-16  4:26     ` Elijah Newren
2023-05-09 22:28   ` [PATCH v2 00/15] Introduce new `git replay` command Junio C Hamano
2023-05-10  7:33     ` Christian Couder
2023-05-16  4:42   ` Elijah Newren
2023-06-02 10:25   ` [PATCH v3 " Christian Couder
2023-06-02 10:25     ` [PATCH v3 01/15] t6429: remove switching aspects of fast-rebase Christian Couder
2023-06-02 10:25     ` [PATCH v3 02/15] replay: introduce new builtin Christian Couder
2023-06-02 10:25     ` [PATCH v3 03/15] replay: start using parse_options API Christian Couder
2023-06-02 10:25     ` [PATCH v3 04/15] replay: die() instead of failing assert() Christian Couder
2023-06-02 10:25     ` [PATCH v3 05/15] replay: introduce pick_regular_commit() Christian Couder
2023-06-02 10:25     ` [PATCH v3 06/15] replay: don't simplify history Christian Couder
2023-06-02 10:25     ` [PATCH v3 07/15] replay: add an important FIXME comment about gpg signing Christian Couder
2023-06-02 10:25     ` [PATCH v3 08/15] replay: remove progress and info output Christian Couder
2023-06-02 10:25     ` [PATCH v3 09/15] replay: remove HEAD related sanity check Christian Couder
2023-06-02 10:25     ` [PATCH v3 10/15] replay: make it a minimal server side command Christian Couder
2023-06-22 10:01       ` Toon Claes
2023-09-07  8:32         ` Christian Couder
2023-06-02 10:25     ` [PATCH v3 11/15] replay: use standard revision ranges Christian Couder
2023-06-22 10:03       ` Toon Claes
2023-09-07  8:32         ` Christian Couder
2023-09-07 21:02           ` Dragan Simic
2023-10-10 12:44             ` Christian Couder
2023-10-10 14:02               ` Dragan Simic
2023-06-02 10:25     ` [PATCH v3 12/15] replay: disallow revision specific options and pathspecs Christian Couder
2023-07-25 21:16       ` Junio C Hamano
2023-09-07  8:33         ` Christian Couder
2023-06-02 10:25     ` [PATCH v3 13/15] replay: add --advance or 'cherry-pick' mode Christian Couder
2023-06-22 10:05       ` Toon Claes
2023-09-07  8:35         ` Christian Couder
2023-07-25 21:41       ` Junio C Hamano
2023-09-07  8:35         ` Christian Couder
2023-06-02 10:25     ` [PATCH v3 14/15] replay: add --contained to rebase contained branches Christian Couder
2023-06-22 10:10       ` Toon Claes
2023-09-07  8:37         ` Christian Couder
2023-06-02 10:25     ` [PATCH v3 15/15] replay: stop assuming replayed branches do not diverge Christian Couder
2023-06-03  1:42     ` [PATCH v3 00/15] Introduce new `git replay` command Junio C Hamano
2023-06-05  7:11       ` Christian Couder
2023-09-07  9:25     ` [PATCH v4 " Christian Couder
2023-09-07  9:25       ` [PATCH v4 01/15] t6429: remove switching aspects of fast-rebase Christian Couder
2023-09-07  9:25       ` [PATCH v4 02/15] replay: introduce new builtin Christian Couder
2023-09-07 10:23         ` Johannes Schindelin
2023-10-10 12:42           ` Christian Couder
2023-09-07  9:25       ` [PATCH v4 03/15] replay: start using parse_options API Christian Couder
2023-09-07  9:25       ` [PATCH v4 04/15] replay: die() instead of failing assert() Christian Couder
2023-09-07  9:25       ` [PATCH v4 05/15] replay: introduce pick_regular_commit() Christian Couder
2023-09-07  9:25       ` [PATCH v4 06/15] replay: don't simplify history Christian Couder
2023-09-07 10:23         ` Johannes Schindelin
2023-10-10 12:43           ` Christian Couder
2023-09-07  9:25       ` [PATCH v4 07/15] replay: add an important FIXME comment about gpg signing Christian Couder
2023-09-07  9:25       ` [PATCH v4 08/15] replay: remove progress and info output Christian Couder
2023-09-07  9:25       ` [PATCH v4 09/15] replay: remove HEAD related sanity check Christian Couder
2023-09-07  9:25       ` [PATCH v4 10/15] replay: make it a minimal server side command Christian Couder
2023-09-07  9:25       ` [PATCH v4 11/15] replay: use standard revision ranges Christian Couder
2023-09-07 10:24         ` Johannes Schindelin
2023-10-10 12:49           ` Christian Couder
2023-09-08 22:55         ` Linus Arver
2023-09-10  3:20           ` Linus Arver
2023-10-10 12:48             ` Christian Couder
2023-10-10 12:48           ` Christian Couder
2023-10-19 19:26             ` Linus Arver
2023-09-07  9:25       ` [PATCH v4 12/15] replay: disallow revision specific options and pathspecs Christian Couder
2023-09-07 10:24         ` Johannes Schindelin
2023-10-10 12:49           ` Christian Couder
2023-09-07  9:25       ` [PATCH v4 13/15] replay: add --advance or 'cherry-pick' mode Christian Couder
2023-09-07  9:25       ` [PATCH v4 14/15] replay: add --contained to rebase contained branches Christian Couder
2023-09-07  9:25       ` [PATCH v4 15/15] replay: stop assuming replayed branches do not diverge Christian Couder
2023-09-07 10:25       ` [PATCH v4 00/15] Introduce new `git replay` command Johannes Schindelin
2023-10-10 12:50         ` Christian Couder
2023-10-10 12:38       ` [PATCH v5 00/14] " Christian Couder
2023-10-10 12:38         ` [PATCH v5 01/14] t6429: remove switching aspects of fast-rebase Christian Couder
2023-10-10 12:38         ` [PATCH v5 02/14] replay: introduce new builtin Christian Couder
2023-10-10 12:38         ` [PATCH v5 03/14] replay: start using parse_options API Christian Couder
2023-10-10 12:38         ` [PATCH v5 04/14] replay: die() instead of failing assert() Christian Couder
2023-10-10 12:38         ` [PATCH v5 05/14] replay: introduce pick_regular_commit() Christian Couder
2023-10-10 12:38         ` [PATCH v5 06/14] replay: change rev walking options Christian Couder
2023-10-10 12:38         ` [PATCH v5 07/14] replay: add an important FIXME comment about gpg signing Christian Couder
2023-10-10 12:38         ` [PATCH v5 08/14] replay: remove progress and info output Christian Couder
2023-10-10 12:38         ` [PATCH v5 09/14] replay: remove HEAD related sanity check Christian Couder
2023-10-10 12:38         ` [PATCH v5 10/14] replay: make it a minimal server side command Christian Couder
2023-10-10 12:38         ` [PATCH v5 11/14] replay: use standard revision ranges Christian Couder
2023-10-19 19:49           ` Linus Arver
2023-10-10 12:38         ` [PATCH v5 12/14] replay: add --advance or 'cherry-pick' mode Christian Couder
2023-10-10 12:38         ` [PATCH v5 13/14] replay: add --contained to rebase contained branches Christian Couder
2023-10-10 12:38         ` [PATCH v5 14/14] replay: stop assuming replayed branches do not diverge Christian Couder
2023-10-26 13:44         ` [PATCH v5 00/14] Introduce new `git replay` command Johannes Schindelin
2023-10-29  6:01           ` Elijah Newren
2023-11-02 14:59             ` Christian Couder
2023-11-08 12:25               ` Johannes Schindelin
2023-11-02 15:06           ` Christian Couder
2023-11-08 12:25             ` Johannes Schindelin
2023-10-29  6:00         ` Elijah Newren
2023-10-29 14:14           ` Johannes Schindelin
2023-10-30 17:18             ` Elijah Newren
2023-11-02 14:44               ` Christian Couder
2023-11-02 14:48           ` Christian Couder
2023-11-02 13:51         ` [PATCH v6 " Christian Couder
2023-11-02 13:51           ` [PATCH v6 01/14] t6429: remove switching aspects of fast-rebase Christian Couder
2023-11-02 13:51           ` [PATCH v6 02/14] replay: introduce new builtin Christian Couder
2023-11-02 13:51           ` [PATCH v6 03/14] replay: start using parse_options API Christian Couder
2023-11-02 13:51           ` [PATCH v6 04/14] replay: die() instead of failing assert() Christian Couder
2023-11-02 13:51           ` [PATCH v6 05/14] replay: introduce pick_regular_commit() Christian Couder
2023-11-02 13:51           ` [PATCH v6 06/14] replay: change rev walking options Christian Couder
2023-11-02 13:51           ` [PATCH v6 07/14] replay: add an important FIXME comment about gpg signing Christian Couder
2023-11-02 13:51           ` [PATCH v6 08/14] replay: remove progress and info output Christian Couder
2023-11-02 13:51           ` [PATCH v6 09/14] replay: remove HEAD related sanity check Christian Couder
2023-11-02 13:51           ` [PATCH v6 10/14] replay: make it a minimal server side command Christian Couder
2023-11-02 13:51           ` [PATCH v6 11/14] replay: use standard revision ranges Christian Couder
2023-11-02 13:51           ` [PATCH v6 12/14] replay: add --advance or 'cherry-pick' mode Christian Couder
2023-11-02 13:51           ` [PATCH v6 13/14] replay: add --contained to rebase contained branches Christian Couder
2023-11-02 13:51           ` [PATCH v6 14/14] replay: stop assuming replayed branches do not diverge Christian Couder
2023-11-07  2:43           ` [PATCH v6 00/14] Introduce new `git replay` command Elijah Newren
2023-11-07  9:43             ` Christian Couder
2023-11-15 14:51               ` Christian Couder
2023-11-08 12:19             ` Johannes Schindelin
2023-11-08 12:47           ` Johannes Schindelin
2023-11-15 14:46             ` Christian Couder
2023-11-16  8:45               ` Johannes Schindelin
2023-11-16  8:52                 ` Christian Couder
2023-11-15 14:33           ` [PATCH v7 " Christian Couder
2023-11-15 14:33             ` [PATCH v7 01/14] t6429: remove switching aspects of fast-rebase Christian Couder
2023-11-15 14:33             ` [PATCH v7 02/14] replay: introduce new builtin Christian Couder
2023-11-15 14:33             ` [PATCH v7 03/14] replay: start using parse_options API Christian Couder
2023-11-15 14:33             ` [PATCH v7 04/14] replay: die() instead of failing assert() Christian Couder
2023-11-15 14:33             ` [PATCH v7 05/14] replay: introduce pick_regular_commit() Christian Couder
2023-11-15 14:33             ` [PATCH v7 06/14] replay: change rev walking options Christian Couder
2023-11-15 14:33             ` [PATCH v7 07/14] replay: add an important FIXME comment about gpg signing Christian Couder
2023-11-15 14:33             ` [PATCH v7 08/14] replay: remove progress and info output Christian Couder
2023-11-15 14:33             ` [PATCH v7 09/14] replay: remove HEAD related sanity check Christian Couder
2023-11-15 14:33             ` [PATCH v7 10/14] replay: make it a minimal server side command Christian Couder
2023-11-15 14:33             ` [PATCH v7 11/14] replay: use standard revision ranges Christian Couder
2023-11-15 14:33             ` [PATCH v7 12/14] replay: add --advance or 'cherry-pick' mode Christian Couder
2023-11-15 14:33             ` [PATCH v7 13/14] replay: add --contained to rebase contained branches Christian Couder
2023-11-15 14:33             ` [PATCH v7 14/14] replay: stop assuming replayed branches do not diverge Christian Couder
2023-11-16  8:53             ` [PATCH v7 00/14] Introduce new `git replay` command Johannes Schindelin
2023-11-23 19:32               ` Elijah Newren
2023-11-24  0:28                 ` Junio C Hamano
2023-11-24 11:10             ` [PATCH v8 " Christian Couder
2023-11-24 11:10               ` [PATCH v8 01/14] t6429: remove switching aspects of fast-rebase Christian Couder
2023-11-24 11:10               ` [PATCH v8 02/14] replay: introduce new builtin Christian Couder
2023-11-24 11:10               ` [PATCH v8 03/14] replay: start using parse_options API Christian Couder
2023-11-24 11:10               ` [PATCH v8 04/14] replay: die() instead of failing assert() Christian Couder
2023-11-24 11:10               ` [PATCH v8 05/14] replay: introduce pick_regular_commit() Christian Couder
2023-11-24 11:10               ` [PATCH v8 06/14] replay: change rev walking options Christian Couder
2023-11-24 11:10               ` [PATCH v8 07/14] replay: add an important FIXME comment about gpg signing Christian Couder
2023-11-24 11:10               ` [PATCH v8 08/14] replay: remove progress and info output Christian Couder
2023-11-24 11:10               ` [PATCH v8 09/14] replay: remove HEAD related sanity check Christian Couder
2023-11-24 11:10               ` [PATCH v8 10/14] replay: make it a minimal server side command Christian Couder
2023-11-24 11:10               ` [PATCH v8 11/14] replay: use standard revision ranges Christian Couder
2023-11-24 11:10               ` [PATCH v8 12/14] replay: add --advance or 'cherry-pick' mode Christian Couder
2023-11-24 11:10               ` [PATCH v8 13/14] replay: add --contained to rebase contained branches Christian Couder
2023-11-24 11:10               ` [PATCH v8 14/14] replay: stop assuming replayed branches do not diverge Christian Couder
2023-11-25  0:02               ` [PATCH v8 00/14] Introduce new `git replay` command Johannes Schindelin

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