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From: "Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>
To: pclouds@gmail.com
Cc: git@vger.kernel.org, "Junio C Hamano" <gitster@pobox.com>,
	bert.wesarg@googlemail.com, "Ævar Arnfjörð" <avarab@gmail.com>,
	drizzd@gmx.net, git@matthieu-moy.fr, hellmuth@ira.uka.de,
	jjensen@workspacewhiz.com, jost@tcs.ifi.lmu.de, kevin@sb.org,
	per.lundberg@hibox.tv, sandals@crustytoothpaste.net,
	eckhard.s.maass@googlemail.com
Subject: [PATCH v2 2/2] unpack-trees: support core.allIgnoredFilesArePreciousWhenMerging
Date: Mon, 26 Nov 2018 20:38:04 +0100	[thread overview]
Message-ID: <20181126193804.30741-3-pclouds@gmail.com> (raw)
In-Reply-To: <20181126193804.30741-1-pclouds@gmail.com>

Ignored files can be marked precious to prevent being overwritten
during a merge (or even a branch switch). If you really want to make
sure no ignored files are overwritten, this config variable is for
you.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
 Documentation/config/core.txt |  6 ++++++
 Documentation/gitignore.txt   |  5 +++--
 unpack-trees.c                | 21 ++++++++++++++++++++-
 3 files changed, 29 insertions(+), 3 deletions(-)

diff --git a/Documentation/config/core.txt b/Documentation/config/core.txt
index d0e6635fe0..bff5834c13 100644
--- a/Documentation/config/core.txt
+++ b/Documentation/config/core.txt
@@ -1,3 +1,9 @@
+core.allIgnoredFilesArePreciousWhenMerging::
+	During a merge operation, if "precious" attribute is unset,
+	consider it set. You can explicitly remove "precious"
+	attribute if needed. See linkgit:gitattributes[5] for more
+	information.
+
 core.fileMode::
 	Tells Git if the executable bit of files in the working tree
 	is to be honored.
diff --git a/Documentation/gitignore.txt b/Documentation/gitignore.txt
index 0e9614289e..2832df7178 100644
--- a/Documentation/gitignore.txt
+++ b/Documentation/gitignore.txt
@@ -142,8 +142,9 @@ To stop tracking a file that is currently tracked, use
 'git rm --cached'.
 
 Ignored files are generally considered discardable. See `precious`
-attribute in linkgit:gitattributes[5] to change the behavior regarding
-ignored files.
+attribute in linkgit:gitattributes[5] and
+`core.allIgnoredFilesArePreciousWhenMerging` in linkgit:git-config[1]
+to change the behavior regarding ignored files.
 
 EXAMPLES
 --------
diff --git a/unpack-trees.c b/unpack-trees.c
index 9a5aadc084..df3b163e2e 100644
--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -1877,6 +1877,25 @@ static int icase_exists(struct unpack_trees_options *o, const char *name, int le
 	return src && !ie_match_stat(o->src_index, src, st, CE_MATCH_IGNORE_VALID|CE_MATCH_IGNORE_SKIP_WORKTREE);
 }
 
+static int is_precious_ignored_file(struct index_state *istate, const char *path)
+{
+	static struct attr_check *check;
+	int all_precious;
+
+	if (!check)
+		check = attr_check_initl("precious", NULL);
+	if (!check)
+		return 0;
+
+	git_check_attr(istate, path, check);
+	if (ATTR_UNSET(check->items[0].value) &&
+	    !git_config_get_bool("core.allignoredfilesarepreciouswhenmerging",
+				 &all_precious) &&
+	    all_precious)
+		return 1;
+	return ATTR_TRUE(check->items[0].value);
+}
+
 static int check_ok_to_remove(const char *name, int len, int dtype,
 			      const struct cache_entry *ce, struct stat *st,
 			      enum unpack_trees_error_types error_type,
@@ -1895,7 +1914,7 @@ static int check_ok_to_remove(const char *name, int len, int dtype,
 		return 0;
 
 	if (o->dir &&
-	    !is_precious_file(o->src_index, name) &&
+	    !is_precious_ignored_file(o->src_index, name) &&
 	    is_excluded(o->dir, o->src_index, name, &dtype))
 		/*
 		 * ce->name is explicitly excluded, so it is Ok to
-- 
2.19.1.1327.g328c130451.dirty


  parent reply	other threads:[~2018-11-26 19:38 UTC|newest]

Thread overview: 86+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-08-17  5:21 git merge, .gitignore, and silently overwriting untracked files Joshua Jensen
2010-08-17 19:33 ` Junio C Hamano
2010-08-18 23:39   ` [PATCH] optionally disable overwriting of ignored files Clemens Buchacher
2010-08-19 10:41     ` Jakub Narebski
2010-08-20 18:48       ` Clemens Buchacher
2010-08-20 19:01         ` Joshua Jensen
2010-08-20 20:35     ` Junio C Hamano
2010-08-21  8:05       ` Clemens Buchacher
2010-08-22  7:25         ` Junio C Hamano
2010-08-22  8:20           ` Clemens Buchacher
2010-10-09 22:39         ` Kevin Ballard
2010-08-21 13:23       ` Clemens Buchacher
2010-10-09 13:52       ` [PATCH 0/5] do not overwrite untracked files in leading path Clemens Buchacher
2010-10-09 13:52       ` [PATCH 1/5] t7607: use test_commit and test_must_fail Clemens Buchacher
2010-10-10  6:35         ` Jonathan Nieder
2010-10-10  8:35           ` [PATCH 1/5 v2] t7607: use test-lib functions and check MERGE_HEAD Clemens Buchacher
2010-10-13 21:33             ` Junio C Hamano
2010-10-13 21:59             ` Junio C Hamano
2010-10-09 13:52       ` [PATCH 2/5] t7607: add leading-path tests Clemens Buchacher
2010-10-09 19:14         ` Johannes Sixt
2010-10-10  8:38           ` [PATCH 2/5 v2] " Clemens Buchacher
2010-10-09 13:52       ` [PATCH 3/5] add function check_ok_to_remove() Clemens Buchacher
2010-10-13 21:43         ` Junio C Hamano
2010-10-09 13:52       ` [PATCH 4/5] lstat_cache: optionally return match_len Clemens Buchacher
2010-10-09 13:53       ` [PATCH 5/5] do not overwrite files in leading path Clemens Buchacher
2010-10-13 21:57         ` Junio C Hamano
2010-10-13 22:34           ` Clemens Buchacher
2010-10-15  6:48             ` Clemens Buchacher
2010-10-15 18:47               ` Junio C Hamano
2010-08-20 20:46     ` [PATCH] optionally disable overwriting of ignored files Junio C Hamano
2010-08-21  6:48       ` [PATCH v2] " Clemens Buchacher
2010-08-23  8:33     ` [PATCH] " Matthieu Moy
2010-08-31 18:44       ` Heiko Voigt
2010-08-23  9:37     ` Matthieu Moy
2010-08-23 13:56       ` Holger Hellmuth
2010-08-23 15:11         ` Clemens Buchacher
2010-08-23 15:57           ` Junio C Hamano
2010-08-24  7:28             ` Clemens Buchacher
2010-08-24 16:19               ` Junio C Hamano
2018-10-16  9:10       ` Ignored files being silently overwritten when switching branches Ævar Arnfjörð Bjarmason
2018-10-16 15:05         ` Duy Nguyen
2018-10-18  1:55           ` Junio C Hamano
2018-11-06 15:12 ` Checkout deleted semi-untracked file Ævar Arnfjörð Bjarmason
2018-11-11  9:52   ` [RFC PATCH] Introduce "precious" file concept Nguyễn Thái Ngọc Duy
2018-11-11 12:15     ` Bert Wesarg
2018-11-11 12:59     ` Junio C Hamano
2018-11-26 19:38     ` [PATCH v2 0/2] Precios files round two Nguyễn Thái Ngọc Duy
2018-11-26 19:38       ` [PATCH v2 1/2] Introduce "precious" file concept Nguyễn Thái Ngọc Duy
2018-11-26 19:38       ` Nguyễn Thái Ngọc Duy [this message]
2018-11-11 12:33   ` [RFC PATCH] " Ævar Arnfjörð Bjarmason
2018-11-11 13:06     ` Ævar Arnfjörð Bjarmason
2018-11-12 16:14       ` Duy Nguyen
2018-11-11 15:41     ` Duy Nguyen
2018-11-11 16:55       ` Ævar Arnfjörð Bjarmason
2018-11-12  7:35       ` Per Lundberg
2018-11-12  9:08         ` Matthieu Moy
2018-11-12  9:49           ` Ævar Arnfjörð Bjarmason
2018-11-12 10:26             ` Junio C Hamano
2018-11-12 12:45               ` Ævar Arnfjörð Bjarmason
2018-11-12 13:02                 ` Junio C Hamano
2018-11-12 16:07           ` Duy Nguyen
2018-11-12 23:22     ` brian m. carlson
2018-11-26  9:30       ` Per Lundberg
2018-11-26 10:28         ` Ævar Arnfjörð Bjarmason
2018-11-26 12:49         ` Junio C Hamano
2018-11-27 15:08           ` Ævar Arnfjörð Bjarmason
2018-11-28  3:58             ` Junio C Hamano
2018-11-28 21:54               ` Ævar Arnfjörð Bjarmason
2018-11-29  5:04                 ` Junio C Hamano
2018-12-01  6:21                 ` Duy Nguyen
2018-11-26 15:26         ` Duy Nguyen
2018-11-26 15:34           ` Ævar Arnfjörð Bjarmason
2018-11-26 15:40             ` Duy Nguyen
2018-11-26 15:47               ` Ævar Arnfjörð Bjarmason
2018-11-26 15:55                 ` Duy Nguyen
2018-11-27  9:43                   ` Per Lundberg
2018-11-27 12:55                     ` Jacob Keller
2018-11-27 14:50                       ` Per Lundberg
2018-11-28  1:21                         ` brian m. carlson
2018-11-28  6:54                           ` Per Lundberg
2018-11-27 15:19                       ` Duy Nguyen
2018-12-06 18:39                       ` Duy Nguyen
2018-11-26 16:02       ` Eckhard Maaß
2018-10-15 13:01 Ignored files being silently overwritten when switching branches Per Lundberg
2018-10-16  6:40 ` Jeff King
2018-11-06 12:41 Checkout deleted semi-untracked file Steffen Jost

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