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From: Junio C Hamano <gitster@pobox.com>
To: Elijah Newren <newren@gmail.com>
Cc: git@vger.kernel.org, "Derrick Stolee" <stolee@gmail.com>,
	"Eric Wong" <e@80x24.org>, "Jeff King" <peff@peff.net>,
	"Ævar Arnfjörð Bjarmason" <avarab@gmail.com>,
	"Johannes Schindelin" <Johannes.Schindelin@gmx.de>,
	"Lars Schneider" <larsxschneider@gmail.com>,
	"Jonathan Nieder" <jrnieder@gmail.com>,
	"Eric Sunshine" <sunshine@sunshineco.com>
Subject: Re: [PATCH v5 2/4] t3427: accelerate this test by using fast-export and fast-import
Date: Tue, 03 Sep 2019 14:26:22 -0700	[thread overview]
Message-ID: <xmqqsgpdrs01.fsf@gitster-ct.c.googlers.com> (raw)
In-Reply-To: <20190903185524.13467-3-newren@gmail.com> (Elijah Newren's message of "Tue, 3 Sep 2019 11:55:22 -0700")

Elijah Newren <newren@gmail.com> writes:

> +extract_files_subtree () {
> +	git fast-export --no-data HEAD -- files_subtree/ |
> +		sed -e "s%\([0-9a-f]\{40\} \)files_subtree/%\1%" |
> +		git fast-import --force --quiet
> +}

Clever, if a bit filthy ;-).  We expect to see something like

	M 100644 dead...beef files_subtree/bar
	M 100755 c0f.....fee files_subtree/foo

in the --no-data output, and the assumption here is that 40-hex
followed by " files_subtree/" would never appear anywhere in the
stream other than these tree dump, so the sed script can rewrite
the above to

	M 100644 dead...beef bar
	M 100755 c0f.....fee foo

by getting rid of the leading directory name (plus the slash at the
end).

Thanks.

  reply	other threads:[~2019-09-03 21:26 UTC|newest]

Thread overview: 73+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-22 18:26 RFC: Proposing git-filter-repo for inclusion in git.git Elijah Newren
2019-08-22 20:23 ` Junio C Hamano
2019-08-22 21:12   ` Elijah Newren
2019-08-22 21:34     ` Junio C Hamano
2019-08-26 23:52       ` [RFC PATCH 0/5] Remove git-filter-branch from git.git; host it elsewhere Elijah Newren
2019-08-26 23:52         ` [RFC PATCH 1/5] t6006: simplify and optimize empty message test Elijah Newren
2019-08-27  1:23           ` Derrick Stolee
2019-08-26 23:52         ` [RFC PATCH 2/5] t3427: accelerate this test by using fast-export and fast-import Elijah Newren
2019-08-27  1:25           ` Derrick Stolee
2019-08-26 23:52         ` [RFC PATCH 3/5] git-sh-i18n: work with external scripts Elijah Newren
2019-08-27  1:28           ` Derrick Stolee
2019-08-26 23:52         ` [RFC PATCH 4/5] Recommend git-filter-repo instead of git-filter-branch in documentation Elijah Newren
2019-08-27  1:32           ` Derrick Stolee
2019-08-27  6:23             ` Elijah Newren
2019-08-26 23:52         ` [RFC PATCH 5/5] Remove git-filter-branch, it is now external to git.git Elijah Newren
2019-08-27  1:39         ` [RFC PATCH 0/5] Remove git-filter-branch from git.git; host it elsewhere Derrick Stolee
2019-08-27  6:17           ` Elijah Newren
2019-08-27  7:03         ` Eric Wong
2019-08-27  8:43           ` Sergey Organov
2019-08-27 22:18             ` Elijah Newren
2019-08-28  8:52               ` Sergey Organov
2019-08-28 17:16                 ` Elijah Newren
2019-08-28 19:03                   ` Sergey Organov
2019-08-30 20:40                   ` Johannes Schindelin
2019-08-30 23:22                     ` Elijah Newren
2019-09-02  9:29                       ` Johannes Schindelin
2019-09-03 17:37                         ` Elijah Newren
2019-08-28  0:22         ` [PATCH v2 0/4] Warn about git-filter-branch usage and avoid it Elijah Newren
2019-08-28  0:22           ` [PATCH v2 1/4] t6006: simplify and optimize empty message test Elijah Newren
2019-08-28  0:22           ` [PATCH v2 2/4] t3427: accelerate this test by using fast-export and fast-import Elijah Newren
2019-08-28  6:00             ` Eric Sunshine
2019-08-28  0:22           ` [PATCH v2 3/4] Recommend git-filter-repo instead of git-filter-branch Elijah Newren
2019-08-28  6:17             ` Eric Sunshine
2019-08-28 21:48               ` Elijah Newren
2019-08-28  0:22           ` [RFC PATCH v2 4/4] Remove git-filter-branch, it is now external to git.git Elijah Newren
2019-08-29  0:06           ` [PATCH v3 0/4] Warn about git-filter-branch usage and avoid it Elijah Newren
2019-08-29  0:06             ` [PATCH v3 1/4] t6006: simplify and optimize empty message test Elijah Newren
2019-08-29  0:06             ` [PATCH v3 2/4] t3427: accelerate this test by using fast-export and fast-import Elijah Newren
2019-08-29  0:06             ` [PATCH v3 3/4] Recommend git-filter-repo instead of git-filter-branch Elijah Newren
2019-08-29 18:10               ` Eric Sunshine
2019-08-30  0:04                 ` Elijah Newren
2019-08-29  0:06             ` [PATCH v3 4/4] t9902: use a non-deprecated command for testing Elijah Newren
2019-08-30  5:57             ` [PATCH v4 0/4] Warn about git-filter-branch usage and avoid it Elijah Newren
2019-08-30  5:57               ` [PATCH v4 1/4] t6006: simplify and optimize empty message test Elijah Newren
2019-09-02 14:47                 ` Johannes Schindelin
2019-08-30  5:57               ` [PATCH v4 2/4] t3427: accelerate this test by using fast-export and fast-import Elijah Newren
2019-09-02 14:45                 ` Johannes Schindelin
2019-08-30  5:57               ` [PATCH v4 3/4] Recommend git-filter-repo instead of git-filter-branch Elijah Newren
2019-08-30  5:57               ` [PATCH v4 4/4] t9902: use a non-deprecated command for testing Elijah Newren
2019-09-03 18:55           ` [PATCH v5 0/4] Warn about git-filter-branch usage and avoid it Elijah Newren
2019-09-03 18:55             ` [PATCH v5 1/4] t6006: simplify and optimize empty message test Elijah Newren
2019-09-03 21:08               ` Junio C Hamano
2019-09-03 21:58                 ` Elijah Newren
2019-09-03 22:25                   ` Junio C Hamano
2019-09-03 18:55             ` [PATCH v5 2/4] t3427: accelerate this test by using fast-export and fast-import Elijah Newren
2019-09-03 21:26               ` Junio C Hamano [this message]
2019-09-03 22:46                 ` Junio C Hamano
2019-09-04 20:32                   ` Elijah Newren
2019-09-03 18:55             ` [PATCH v5 3/4] Recommend git-filter-repo instead of git-filter-branch Elijah Newren
2019-09-03 21:40               ` Junio C Hamano
2019-09-04 20:30                 ` Elijah Newren
2019-09-03 18:55             ` [PATCH v5 4/4] t9902: use a non-deprecated command for testing Elijah Newren
2019-09-04 22:32             ` [PATCH v6 0/3] Warn about git-filter-branch usage and avoid it Elijah Newren
2019-09-04 22:32               ` [PATCH v6 1/3] t6006: simplify, fix, and optimize empty message test Elijah Newren
2019-09-04 22:32               ` [PATCH v6 2/3] Recommend git-filter-repo instead of git-filter-branch Elijah Newren
2019-09-04 22:32               ` [PATCH v6 3/3] t9902: use a non-deprecated command for testing Elijah Newren
2019-08-23  3:00     ` RFC: Proposing git-filter-repo for inclusion in git.git Eric Wong
2019-08-23 18:06       ` Elijah Newren
2019-08-23 18:29         ` Elijah Newren
2019-08-28 11:09         ` Johannes Schindelin
2019-08-28 15:06           ` Junio C Hamano
2019-08-23 12:02     ` Derrick Stolee
2019-08-26 19:56   ` Jeff King

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