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From: "SZEDER Gábor" <szeder.dev@gmail.com>
To: Philip Oakley <philipoakley@iee.email>
Cc: Junio C Hamano <gitster@pobox.com>,
	git@vger.kernel.org, Samuel Lijin <sxlijin@gmail.com>
Subject: Re: [PATCH] t7300-clean: demonstrate deleting nested repo with an ignored file breakage
Date: Mon, 26 Aug 2019 09:48:41 +0200
Message-ID: <20190826074841.GP20404@szeder.dev> (raw)
In-Reply-To: <20f71f02-4895-fe57-8704-a44494b971b9@iee.email>

On Sun, Aug 25, 2019 at 11:32:28PM +0100, Philip Oakley wrote:
> Hi Szeder,
> 
> On 25/08/2019 19:59, SZEDER Gábor wrote:
> >'git clean -fd' must not delete an untracked directory if it belongs
> s/untracked//
> I don't believe it should matter either way for a sub-module
> (sub-directory).

I just paraphrased the documentation of the '-d' option for a bit of
context.

   Remove untracked directories in addition to untracked files. If an
   untracked directory is managed by a different Git repository, it is
   not removed by default. Use -f option twice if you really want to
   remove such a directory.

> >to a different Git repository or worktree.
> msybr split the assertion from the fault explanation.
> >  Unfortunately, if a
> >'.gitignore' rule in the outer repository happens to match a file in a
> >nested repository or worktree, then something goes awry and 'git clean
> >-fd' does delete the content of the nested repository's worktree
> good so far.
> >except that ignored file, potentially leading to data loss.
> this appears at cross purposes as the description has changed from
> 'ignored/untracked directory' to 'ignored file'.

The description does not mention any ignored directories.

> I'm not sure which part the
> data loss is meant to refer to.

Well, there is only one part where the description talks about stuff
getting deleted... and that's what it refers to :)

> >Add a test to 't7300-clean.sh' to demonstrate this breakage.
> >
> >This issue is a regression introduced in 6b1db43109 (clean: teach
> >clean -d to preserve ignored paths, 2017-05-23).
> >
> >Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
> >---

On a related note, 'git clean -fdx' does leave the nested repository
or worktree intact in the same situation, as it should.

> >  t/t7300-clean.sh | 22 ++++++++++++++++++++++
> >  1 file changed, 22 insertions(+)
> >
> >diff --git a/t/t7300-clean.sh b/t/t7300-clean.sh
> >index a2c45d1902..d01fd120ab 100755
> >--- a/t/t7300-clean.sh
> >+++ b/t/t7300-clean.sh
> >@@ -669,6 +669,28 @@ test_expect_success 'git clean -d skips untracked dirs containing ignored files'
> >  	test_path_is_missing foo/b/bb
> >  '
> >+test_expect_failure 'git clean -d skips nested repo containing ignored files' '
> >+	test_when_finished "rm -rf nested-repo-with-ignored-file" &&
> >+
> >+	git init nested-repo-with-ignored-file &&
> >+	(
> >+		cd nested-repo-with-ignored-file &&
> >+		>file &&
> >+		git add file &&
> >+		git commit -m Initial &&
> >+
> >+		# This file is ignored by a .gitignore rule in the outer repo
> >+		# added in the previous test.
> >+		>ignoreme
> >+	) &&
> >+
> >+	git clean -fd &&
> >+
> >+	test_path_is_file nested-repo-with-ignored-file/.git/index &&
> >+	test_path_is_file nested-repo-with-ignored-file/ignoreme &&
> >+	test_path_is_file nested-repo-with-ignored-file/file
> >+'
> >+
> >  test_expect_success MINGW 'handle clean & core.longpaths = false nicely' '
> >  	test_config core.longpaths false &&
> >  	a50=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa &&
> 

  reply index

Thread overview: 73+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-25 18:59 SZEDER Gábor
2019-08-25 20:34 ` SZEDER Gábor
2019-08-25 22:32 ` Philip Oakley
2019-08-26  7:48   ` SZEDER Gábor [this message]
2019-09-05 15:47 ` [RFC PATCH v2 00/12] Fix some git clean issues Elijah Newren
2019-09-05 15:47   ` [RFC PATCH v2 01/12] t7300: Add some testcases showing failure to clean specified pathspecs Elijah Newren
2019-09-05 15:47   ` [RFC PATCH v2 02/12] dir: fix typo in comment Elijah Newren
2019-09-05 15:47   ` [RFC PATCH v2 03/12] dir: fix off-by-one error in match_pathspec_item Elijah Newren
2019-09-05 15:47   ` [RFC PATCH v2 04/12] dir: Directories should be checked for matching pathspecs too Elijah Newren
2019-09-05 15:47   ` [RFC PATCH v2 05/12] dir: Make the DO_MATCH_SUBMODULE code reusable for a non-submodule case Elijah Newren
2019-09-05 15:47   ` [RFC PATCH v2 06/12] dir: If our pathspec might match files under a dir, recurse into it Elijah Newren
2019-09-05 15:47   ` [RFC PATCH v2 07/12] dir: add commentary explaining match_pathspec_item's return value Elijah Newren
2019-09-05 15:47   ` [RFC PATCH v2 08/12] git-clean.txt: do not claim we will delete files with -n/--dry-run Elijah Newren
2019-09-05 15:47   ` [RFC PATCH v2 09/12] clean: disambiguate the definition of -d Elijah Newren
2019-09-05 15:47   ` [RFC PATCH v2 10/12] clean: avoid removing untracked files in a nested git repository Elijah Newren
2019-09-05 21:20     ` SZEDER Gábor
2019-09-05 15:47   ` [RFC PATCH v2 11/12] clean: rewrap overly long line Elijah Newren
2019-09-05 15:47   ` [RFC PATCH v2 12/12] clean: fix theoretical path corruption Elijah Newren
2019-09-05 19:27     ` SZEDER Gábor
2019-09-07  0:34       ` Elijah Newren
2019-09-05 19:01   ` [RFC PATCH v2 00/12] Fix some git clean issues SZEDER Gábor
2019-09-07  0:33     ` Elijah Newren
2019-09-12 22:12   ` [PATCH v3 " Elijah Newren
2019-09-12 22:12     ` [PATCH v3 01/12] t7300: add testcases showing failure to clean specified pathspecs Elijah Newren
2019-09-13 18:54       ` Junio C Hamano
2019-09-13 19:10         ` Elijah Newren
2019-09-13 20:29           ` Junio C Hamano
2019-09-12 22:12     ` [PATCH v3 02/12] dir: fix typo in comment Elijah Newren
2019-09-12 22:12     ` [PATCH v3 03/12] dir: fix off-by-one error in match_pathspec_item Elijah Newren
2019-09-13 19:05       ` Junio C Hamano
2019-09-12 22:12     ` [PATCH v3 04/12] dir: also check directories for matching pathspecs Elijah Newren
2019-09-12 22:12     ` [PATCH v3 05/12] dir: make the DO_MATCH_SUBMODULE code reusable for a non-submodule case Elijah Newren
2019-09-12 22:12     ` [PATCH v3 06/12] dir: if our pathspec might match files under a dir, recurse into it Elijah Newren
2019-09-13 19:45       ` Junio C Hamano
2019-09-12 22:12     ` [PATCH v3 07/12] dir: add commentary explaining match_pathspec_item's return value Elijah Newren
2019-09-13 20:04       ` Junio C Hamano
2019-09-12 22:12     ` [PATCH v3 08/12] git-clean.txt: do not claim we will delete files with -n/--dry-run Elijah Newren
2019-09-12 22:12     ` [PATCH v3 09/12] clean: disambiguate the definition of -d Elijah Newren
2019-09-12 22:12     ` [PATCH v3 10/12] clean: avoid removing untracked files in a nested git repository Elijah Newren
2019-09-12 22:12     ` [PATCH v3 11/12] clean: rewrap overly long line Elijah Newren
2019-09-12 22:12     ` [PATCH v3 12/12] clean: fix theoretical path corruption Elijah Newren
2019-09-17 16:34     ` [PATCH v4 00/12] Fix some git clean issues Elijah Newren
2019-09-17 16:34       ` [PATCH v4 01/12] t7300: add testcases showing failure to clean specified pathspecs Elijah Newren
2019-09-17 16:34       ` [PATCH v4 02/12] dir: fix typo in comment Elijah Newren
2019-09-17 16:34       ` [PATCH v4 03/12] dir: fix off-by-one error in match_pathspec_item Elijah Newren
2019-09-17 16:34       ` [PATCH v4 04/12] dir: also check directories for matching pathspecs Elijah Newren
2019-09-25 20:39         ` [BUG] git is segfaulting, was " Denton Liu
2019-09-25 21:28           ` Elijah Newren
2019-09-25 21:55             ` Denton Liu
2019-09-26 20:35               ` Denton Liu
2019-09-27  0:12                 ` Elijah Newren
2019-09-27  1:09           ` SZEDER Gábor
2019-09-27  2:17             ` SZEDER Gábor
2019-09-27 17:10               ` Denton Liu
2019-09-30 19:11                 ` [PATCH] dir: special case check for the possibility that pathspec is NULL Elijah Newren
2019-09-30 22:31                   ` Denton Liu
2019-10-01  7:01                     ` Elijah Newren
2019-10-01 18:30                   ` [PATCH v2] " Elijah Newren
2019-10-01 18:40                     ` Denton Liu
2019-10-01 18:54                       ` Elijah Newren
2019-10-01 18:55                       ` [PATCH v3] " Elijah Newren
2019-10-01 19:35                         ` Denton Liu
2019-10-01 19:39                           ` Elijah Newren
2019-10-02 15:51                             ` Elijah Newren
2019-10-07 18:04                         ` SZEDER Gábor
2019-09-17 16:34       ` [PATCH v4 05/12] dir: make the DO_MATCH_SUBMODULE code reusable for a non-submodule case Elijah Newren
2019-09-17 16:34       ` [PATCH v4 06/12] dir: if our pathspec might match files under a dir, recurse into it Elijah Newren
2019-09-17 16:34       ` [PATCH v4 07/12] dir: add commentary explaining match_pathspec_item's return value Elijah Newren
2019-09-17 16:35       ` [PATCH v4 08/12] git-clean.txt: do not claim we will delete files with -n/--dry-run Elijah Newren
2019-09-17 16:35       ` [PATCH v4 09/12] clean: disambiguate the definition of -d Elijah Newren
2019-09-17 16:35       ` [PATCH v4 10/12] clean: avoid removing untracked files in a nested git repository Elijah Newren
2019-09-17 16:35       ` [PATCH v4 11/12] clean: rewrap overly long line Elijah Newren
2019-09-17 16:35       ` [PATCH v4 12/12] clean: fix theoretical path corruption Elijah Newren

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