[PATCH 06/24] commit: support backup log

["Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>]

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
 builtin/commit.c      | 16 +++++++++++-----
 t/t2080-backup-log.sh | 24 ++++++++++++++++++++++++
 2 files changed, 35 insertions(+), 5 deletions(-)

diff --git a/builtin/commit.c b/builtin/commit.c
index c021b119bb..2bdbeff4a2 100644
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -268,7 +268,7 @@ static int list_paths(struct string_list *list, const char *with_tree,
 	return ret;
 }
 
-static void add_remove_files(struct string_list *list)
+static void add_remove_files(struct string_list *list, int flags)
 {
 	int i;
 	for (i = 0; i < list->nr; i++) {
@@ -280,7 +280,7 @@ static void add_remove_files(struct string_list *list)
 			continue;
 
 		if (!lstat(p->string, &st)) {
-			if (add_to_cache(p->string, &st, 0))
+			if (add_to_cache(p->string, &st, flags))
 				die(_("updating files failed"));
 		} else
 			remove_file_from_cache(p->string);
@@ -331,8 +331,14 @@ static const char *prepare_index(int argc, const char **argv, const char *prefix
 	struct string_list partial = STRING_LIST_INIT_DUP;
 	struct pathspec pathspec;
 	int refresh_flags = REFRESH_QUIET;
+	int add_flags = 0;
+	int core_backup_log = 0;
 	const char *ret;
 
+	repo_config_get_bool(the_repository, "core.backuplog", &core_backup_log);
+	if (core_backup_log)
+		add_flags = ADD_CACHE_LOG_UPDATES;
+
 	if (is_status)
 		refresh_flags |= REFRESH_UNMERGED;
 	parse_pathspec(&pathspec, 0,
@@ -391,7 +397,7 @@ static const char *prepare_index(int argc, const char **argv, const char *prefix
 	 */
 	if (all || (also && pathspec.nr)) {
 		hold_locked_index(&index_lock, LOCK_DIE_ON_ERROR);
-		add_files_to_cache(also ? prefix : NULL, &pathspec, 0);
+		add_files_to_cache(also ? prefix : NULL, &pathspec, add_flags);
 		refresh_cache_or_die(refresh_flags);
 		update_main_cache_tree(WRITE_TREE_SILENT);
 		if (write_locked_index(&the_index, &index_lock, 0))
@@ -460,7 +466,7 @@ static const char *prepare_index(int argc, const char **argv, const char *prefix
 		die(_("cannot read the index"));
 
 	hold_locked_index(&index_lock, LOCK_DIE_ON_ERROR);
-	add_remove_files(&partial);
+	add_remove_files(&partial, add_flags);
 	refresh_cache(REFRESH_QUIET);
 	update_main_cache_tree(WRITE_TREE_SILENT);
 	if (write_locked_index(&the_index, &index_lock, 0))
@@ -472,7 +478,7 @@ static const char *prepare_index(int argc, const char **argv, const char *prefix
 				  LOCK_DIE_ON_ERROR);
 
 	create_base_index(current_head);
-	add_remove_files(&partial);
+	add_remove_files(&partial, 0);
 	refresh_cache(REFRESH_QUIET);
 
 	if (write_locked_index(&the_index, &false_lock, 0))
diff --git a/t/t2080-backup-log.sh b/t/t2080-backup-log.sh
index 6b3814c172..b19e26a807 100755
--- a/t/t2080-backup-log.sh
+++ b/t/t2080-backup-log.sh
@@ -39,4 +39,28 @@ test_expect_success 'update-index --keep-backup writes backup log' '
 	test_cmp expected actual
 '
 
+test_expect_success 'commit -a writes backup log' '
+	test_tick &&
+	echo update-again >>initial.t &&
+	OLD=$(git rev-parse :./initial.t) &&
+	NEW=$(git hash-object initial.t) &&
+	git -c core.backupLog=true commit -am update-again &&
+	echo "$OLD $NEW $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> $test_tick -0700	initial.t" >expected &&
+	tail -n1 .git/index.bkl >actual &&
+	test_cmp expected actual
+'
+
+test_expect_success 'partial commit writes backup log' '
+	rm -f .git/index.bkl &&
+	test_tick &&
+	echo rising >>new-file &&
+	git add -N new-file &&
+	OLD=$EMPTY_BLOB &&
+	NEW=$(git hash-object new-file) &&
+	git -c core.backupLog=true commit -m update-once-more -- new-file initial.t &&
+	echo "$OLD $NEW $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> $test_tick -0700	new-file" >expected &&
+	# expect file deletion to not log anything &&
+	test_cmp expected .git/index.bkl
+'
+
 test_done
-- 
2.20.0.rc2.486.g9832c05c3d