From: Brandon Williams <bmwill@google.com>
To: Junio C Hamano <gitster@pobox.com>
Cc: Jeff King <peff@peff.net>, git@vger.kernel.org
Subject: Re: [PATCH 1/2] ls-files: adding support for submodules
Date: Tue, 27 Sep 2016 15:09:55 -0700 [thread overview]
Message-ID: <20160927220955.GA38615@google.com> (raw)
In-Reply-To: <xmqqwphxknoj.fsf@gitster.mtv.corp.google.com>
On 09/27, Junio C Hamano wrote:
> Brandon Williams <bmwill@google.com> writes:
>
> > Well maybe...I don't really know much about how the prefix interacts in
> > every scenario but would what you describe still work if we are in a sub
> > dir of the superproject (which contains other directorys and perhaps a
> > submodule) and execute a --recurse-submodules command in the
> > subdirectory? I suspect we don't want to force users to be in the root
> > directory of the project in order to use --recurse-submodules.
>
> You need to remember "must be at the top" is relevant only to the
> command that is invoked with --super-prefix, not the recursive one
> that drives such a process.
>
> Suppose your superproject is organized like so:
>
> - file-at-top
> a/file-in-A
> a/b (submodule)
> a/b/file-at-top-of-B
> c/ (submodule)
> c/file-at-top-of-C
>
> If you are in a subdirectory of your superproject, say, a/,
>
> cd a && git ls-files --recurse-submodules -- "b*"
>
> I would expect we would recurse into the submodule at "a/b" and find
> "b/file-at-top-of-B". What does the internal invocation to do so
> would look like? I would think "git -C b --super=b ls-files" that
> is run from "a".
>
> Your code would is already prepared to find "file-at-top-of-B" in
> the index of the submodule, prepend "b/" to it and report the result
> as "b/file-at-top-of-B" when such a call is made, I think.
>
> Now, can you refer to c/ and c/file-at-top-of-C while sitting at a/?
>
> cd a && git ls-files --recurse-submodules -- "../c*"
>
> would be the top-level invocation. This would iterate over the
> index of the superproject, trying to find what matches "c*" (or,
> "../c*" relative to "a" i.e. where you are), find that 'c' that is a
> submodule, and invoke "git -C ../c --super=../c ls-files"
> internally, I would imagine. I think your code is prepared to
> accept this case as well.
>
> In any case, the "must be at the top" does not come into the picture
> at all for the end-user interaction, i.e. invocation of the command
> that is told to recurse into submodules, so we'd be OK.
Thanks for the clear explination that makes sense.
Also, --super-prefix as a name is growing on me :)
--
Brandon Williams
next prev parent reply other threads:[~2016-09-27 22:10 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-21 22:04 [PATCH 1/2] ls-files: adding support for submodules Brandon Williams
2016-09-21 22:04 ` [PATCH 2/2] ls-files: add pathspec matching " Brandon Williams
2016-09-21 22:53 ` Junio C Hamano
2016-09-21 23:23 ` Brandon Williams
2016-09-21 23:28 ` [PATCH 2/2 v2] " Brandon Williams
2016-09-23 18:48 ` Junio C Hamano
2016-09-23 19:20 ` Junio C Hamano
2016-09-23 20:49 ` Brandon Williams
2016-09-21 22:08 ` [PATCH 1/2] ls-files: adding support " Brandon Williams
2016-09-21 22:28 ` Junio C Hamano
2016-09-21 22:38 ` Brandon Williams
2016-09-21 22:42 ` [PATCH 1/2] ls-files: optionally recurse into submodules Brandon Williams
2016-09-22 6:20 ` Jeff King
2016-09-23 23:31 ` Brandon Williams
2016-09-21 23:13 ` [PATCH 1/2] ls-files: adding support for submodules Junio C Hamano
2016-09-22 4:18 ` Jeff King
2016-09-22 16:04 ` Stefan Beller
2016-09-22 18:13 ` Junio C Hamano
2016-09-23 3:41 ` Jeff King
2016-09-23 5:47 ` Stefan Beller
2016-09-23 6:06 ` Jeff King
2016-09-23 16:16 ` Brandon Williams
2016-09-23 16:34 ` Stefan Beller
2016-09-25 11:03 ` Nazri Ramliy
2016-09-27 21:38 ` Junio C Hamano
2016-09-27 21:48 ` Brandon Williams
2016-09-27 22:01 ` Junio C Hamano
2016-09-27 22:09 ` Brandon Williams [this message]
2016-09-27 22:23 ` Junio C Hamano
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