chore(3p/git): Unvendor git and track patches instead r/2903

This was vendored a long time ago under the expectation that keeping
it in sync with cgit would be easier this way, but it has proven not
to be a big issue.

On the other hand, a vendored copy of git is an annoying maintenance
burden. It is much easier to rebase the single (dottime) patch that we
have.

This removes the vendored copy of git and instead passes the git
source code to cgit via `pkgs.srcOnly`, which includes the applied
patch so that cgit can continue rendering dottime.

Change-Id: If31f62dea7ce688fd1b9050204e9378019775f2b

1 files changed, 0 insertions, 1096 deletions

diff --git a/third_party/git/t/lib-submodule-update.sh b/third_party/git/t/lib-submodule-update.sh
deleted file mode 100644
index 87a759149faf..000000000000
--- a/third_party/git/t/lib-submodule-update.sh
+++ /dev/null
@@ -1,1096 +0,0 @@
-# Create a submodule layout used for all tests below.
-#
-# The following use cases are covered:
-# - New submodule (no_submodule => add_sub1)
-# - Removed submodule (add_sub1 => remove_sub1)
-# - Updated submodule (add_sub1 => modify_sub1)
-# - Updated submodule recursively (add_nested_sub => modify_sub1_recursively)
-# - Submodule updated to invalid commit (add_sub1 => invalid_sub1)
-# - Submodule updated from invalid commit (invalid_sub1 => valid_sub1)
-# - Submodule replaced by tracked files in directory (add_sub1 =>
-#   replace_sub1_with_directory)
-# - Directory containing tracked files replaced by submodule
-#   (replace_sub1_with_directory => replace_directory_with_sub1)
-# - Submodule replaced by tracked file with the same name (add_sub1 =>
-#   replace_sub1_with_file)
-# - Tracked file replaced by submodule (replace_sub1_with_file =>
-#   replace_file_with_sub1)
-#
-#                     ----O
-#                    /    ^
-#                   /     remove_sub1
-#                  /
-#       add_sub1  /-------O---------O--------O  modify_sub1_recursively
-#             |  /        ^         add_nested_sub
-#             | /         modify_sub1
-#             v/
-#      O------O-----------O---------O
-#      ^       \          ^         replace_directory_with_sub1
-#      |        \         replace_sub1_with_directory
-# no_submodule   \
-#                 --------O---------O
-#                  \      ^         replace_file_with_sub1
-#                   \     replace_sub1_with_file
-#                    \
-#                     ----O---------O
-#                         ^         valid_sub1
-#                         invalid_sub1
-#
-
-create_lib_submodule_repo () {
-	git init submodule_update_sub1 &&
-	(
-		cd submodule_update_sub1 &&
-		echo "expect" >>.gitignore &&
-		echo "actual" >>.gitignore &&
-		echo "x" >file1 &&
-		echo "y" >file2 &&
-		git add .gitignore file1 file2 &&
-		git commit -m "Base inside first submodule" &&
-		git branch "no_submodule"
-	) &&
-	git init submodule_update_sub2 &&
-	(
-		cd submodule_update_sub2
-		echo "expect" >>.gitignore &&
-		echo "actual" >>.gitignore &&
-		echo "x" >file1 &&
-		echo "y" >file2 &&
-		git add .gitignore file1 file2 &&
-		git commit -m "nested submodule base" &&
-		git branch "no_submodule"
-	) &&
-	git init submodule_update_repo &&
-	(
-		cd submodule_update_repo &&
-		echo "expect" >>.gitignore &&
-		echo "actual" >>.gitignore &&
-		echo "x" >file1 &&
-		echo "y" >file2 &&
-		git add .gitignore file1 file2 &&
-		git commit -m "Base" &&
-		git branch "no_submodule" &&
-
-		git checkout -b "add_sub1" &&
-		git submodule add ../submodule_update_sub1 sub1 &&
-		git submodule add ../submodule_update_sub1 uninitialized_sub &&
-		git config -f .gitmodules submodule.sub1.ignore all &&
-		git config submodule.sub1.ignore all &&
-		git add .gitmodules &&
-		git commit -m "Add sub1" &&
-
-		git checkout -b remove_sub1 add_sub1 &&
-		git revert HEAD &&
-
-		git checkout -b modify_sub1 add_sub1 &&
-		git submodule update &&
-		(
-			cd sub1 &&
-			git fetch &&
-			git checkout -b "modifications" &&
-			echo "z" >file2 &&
-			echo "x" >file3 &&
-			git add file2 file3 &&
-			git commit -m "modified file2 and added file3" &&
-			git push origin modifications
-		) &&
-		git add sub1 &&
-		git commit -m "Modify sub1" &&
-
-		git checkout -b add_nested_sub modify_sub1 &&
-		git -C sub1 checkout -b "add_nested_sub" &&
-		git -C sub1 submodule add --branch no_submodule ../submodule_update_sub2 sub2 &&
-		git -C sub1 commit -a -m "add a nested submodule" &&
-		git add sub1 &&
-		git commit -a -m "update submodule, that updates a nested submodule" &&
-		git checkout -b modify_sub1_recursively &&
-		git -C sub1 checkout -b modify_sub1_recursively &&
-		git -C sub1/sub2 checkout -b modify_sub1_recursively &&
-		echo change >sub1/sub2/file3 &&
-		git -C sub1/sub2 add file3 &&
-		git -C sub1/sub2 commit -m "make a change in nested sub" &&
-		git -C sub1 add sub2 &&
-		git -C sub1 commit -m "update nested sub" &&
-		git add sub1 &&
-		git commit -m "update sub1, that updates nested sub" &&
-		git -C sub1 push origin modify_sub1_recursively &&
-		git -C sub1/sub2 push origin modify_sub1_recursively &&
-		git -C sub1 submodule deinit -f --all &&
-
-		git checkout -b replace_sub1_with_directory add_sub1 &&
-		git submodule update &&
-		git -C sub1 checkout modifications &&
-		git rm --cached sub1 &&
-		rm sub1/.git* &&
-		git config -f .gitmodules --remove-section "submodule.sub1" &&
-		git add .gitmodules sub1/* &&
-		git commit -m "Replace sub1 with directory" &&
-
-		git checkout -b replace_directory_with_sub1 &&
-		git revert HEAD &&
-
-		git checkout -b replace_sub1_with_file add_sub1 &&
-		git rm sub1 &&
-		echo "content" >sub1 &&
-		git add sub1 &&
-		git commit -m "Replace sub1 with file" &&
-
-		git checkout -b replace_file_with_sub1 &&
-		git revert HEAD &&
-
-		git checkout -b invalid_sub1 add_sub1 &&
-		git update-index --cacheinfo 160000 $(test_oid numeric) sub1 &&
-		git commit -m "Invalid sub1 commit" &&
-		git checkout -b valid_sub1 &&
-		git revert HEAD &&
-
-		git checkout master
-	)
-}
-
-# Helper function to replace gitfile with .git directory
-replace_gitfile_with_git_dir () {
-	(
-		cd "$1" &&
-		git_dir="$(git rev-parse --git-dir)" &&
-		rm -f .git &&
-		cp -R "$git_dir" .git &&
-		GIT_WORK_TREE=. git config --unset core.worktree
-	)
-}
-
-# Test that the .git directory in the submodule is unchanged (except for the
-# core.worktree setting, which appears only in $GIT_DIR/modules/$1/config).
-# Call this function before test_submodule_content as the latter might
-# write the index file leading to false positive index differences.
-#
-# Note that this only supports submodules at the root level of the
-# superproject, with the default name, i.e. same as its path.
-test_git_directory_is_unchanged () {
-	(
-		cd ".git/modules/$1" &&
-		# does core.worktree point at the right place?
-		test "$(git config core.worktree)" = "../../../$1" &&
-		# remove it temporarily before comparing, as
-		# "$1/.git/config" lacks it...
-		git config --unset core.worktree
-	) &&
-	diff -r ".git/modules/$1" "$1/.git" &&
-	(
-		# ... and then restore.
-		cd ".git/modules/$1" &&
-		git config core.worktree "../../../$1"
-	)
-}
-
-test_git_directory_exists () {
-	test -e ".git/modules/$1" &&
-	if test -f sub1/.git
-	then
-		# does core.worktree point at the right place?
-		test "$(git -C .git/modules/$1 config core.worktree)" = "../../../$1"
-	fi
-}
-
-# Helper function to be executed at the start of every test below, it sets up
-# the submodule repo if it doesn't exist and configures the most problematic
-# settings for diff.ignoreSubmodules.
-prolog () {
-	(test -d submodule_update_repo || create_lib_submodule_repo) &&
-	test_config_global diff.ignoreSubmodules all &&
-	test_config diff.ignoreSubmodules all
-}
-
-# Helper function to bring work tree back into the state given by the
-# commit. This includes trying to populate sub1 accordingly if it exists and
-# should be updated to an existing commit.
-reset_work_tree_to () {
-	rm -rf submodule_update &&
-	git clone submodule_update_repo submodule_update &&
-	(
-		cd submodule_update &&
-		rm -rf sub1 &&
-		git checkout -f "$1" &&
-		git status -u -s >actual &&
-		test_must_be_empty actual &&
-		hash=$(git rev-parse --revs-only HEAD:sub1) &&
-		if test -n "$hash" &&
-		   test $(cd "../submodule_update_sub1" && git rev-parse --verify "$hash^{commit}")
-		then
-			git submodule update --init --recursive "sub1"
-		fi
-	)
-}
-
-reset_work_tree_to_interested () {
-	reset_work_tree_to $1 &&
-	# make the submodule git dirs available
-	if ! test -d submodule_update/.git/modules/sub1
-	then
-		mkdir -p submodule_update/.git/modules &&
-		cp -r submodule_update_repo/.git/modules/sub1 submodule_update/.git/modules/sub1
-		GIT_WORK_TREE=. git -C submodule_update/.git/modules/sub1 config --unset core.worktree
-	fi &&
-	if ! test -d submodule_update/.git/modules/sub1/modules/sub2
-	then
-		mkdir -p submodule_update/.git/modules/sub1/modules &&
-		cp -r submodule_update_repo/.git/modules/sub1/modules/sub2 submodule_update/.git/modules/sub1/modules/sub2
-		# core.worktree is unset for sub2 as it is not checked out
-	fi &&
-	# indicate we are interested in the submodule:
-	git -C submodule_update config submodule.sub1.url "bogus" &&
-	# sub1 might not be checked out, so use the git dir
-	git -C submodule_update/.git/modules/sub1 config submodule.sub2.url "bogus"
-}
-
-# Test that the superproject contains the content according to commit "$1"
-# (the work tree must match the index for everything but submodules but the
-# index must exactly match the given commit including any submodule SHA-1s).
-test_superproject_content () {
-	git diff-index --cached "$1" >actual &&
-	test_must_be_empty actual &&
-	git diff-files --ignore-submodules >actual &&
-	test_must_be_empty actual
-}
-
-# Test that the given submodule at path "$1" contains the content according
-# to the submodule commit recorded in the superproject's commit "$2"
-test_submodule_content () {
-	if test x"$1" = "x-C"
-	then
-		cd "$2"
-		shift; shift;
-	fi
-	if test $# != 2
-	then
-		echo "test_submodule_content needs two arguments"
-		return 1
-	fi &&
-	submodule="$1" &&
-	commit="$2" &&
-	test -d "$submodule"/ &&
-	if ! test -f "$submodule"/.git && ! test -d "$submodule"/.git
-	then
-		echo "Submodule $submodule is not populated"
-		return 1
-	fi &&
-	sha1=$(git rev-parse --verify "$commit:$submodule") &&
-	if test -z "$sha1"
-	then
-		echo "Couldn't retrieve SHA-1 of $submodule for $commit"
-		return 1
-	fi &&
-	(
-		cd "$submodule" &&
-		git status -u -s >actual &&
-		test_must_be_empty actual &&
-		git diff "$sha1" >actual &&
-		test_must_be_empty actual
-	)
-}
-
-# Test that the following transitions are correctly handled:
-# - Updated submodule
-# - New submodule
-# - Removed submodule
-# - Directory containing tracked files replaced by submodule
-# - Submodule replaced by tracked files in directory
-# - Submodule replaced by tracked file with the same name
-# - Tracked file replaced by submodule
-#
-# The default is that submodule contents aren't changed until "git submodule
-# update" is run. And even then that command doesn't delete the work tree of
-# a removed submodule.
-#
-# The first argument of the callback function will be the name of the submodule.
-#
-# Removing a submodule containing a .git directory must fail even when forced
-# to protect the history! If we are testing this case, the second argument of
-# the callback function will be 'test_must_fail', else it will be the empty
-# string.
-#
-
-# Internal function; use test_submodule_switch_func(), test_submodule_switch(),
-# or test_submodule_forced_switch() instead.
-test_submodule_switch_common () {
-	command="$1"
-	######################### Appearing submodule #########################
-	# Switching to a commit letting a submodule appear creates empty dir ...
-	if test "$KNOWN_FAILURE_STASH_DOES_IGNORE_SUBMODULE_CHANGES" = 1
-	then
-		# Restoring stash fails to restore submodule index entry
-		RESULT="failure"
-	else
-		RESULT="success"
-	fi
-	test_expect_$RESULT "$command: added submodule creates empty directory" '
-		prolog &&
-		reset_work_tree_to no_submodule &&
-		(
-			cd submodule_update &&
-			git branch -t add_sub1 origin/add_sub1 &&
-			$command add_sub1 &&
-			test_superproject_content origin/add_sub1 &&
-			test_dir_is_empty sub1 &&
-			git submodule update --init --recursive &&
-			test_submodule_content sub1 origin/add_sub1
-		)
-	'
-	# ... and doesn't care if it already exists.
-	test_expect_$RESULT "$command: added submodule leaves existing empty directory alone" '
-		prolog &&
-		reset_work_tree_to no_submodule &&
-		(
-			cd submodule_update &&
-			mkdir sub1 &&
-			git branch -t add_sub1 origin/add_sub1 &&
-			$command add_sub1 &&
-			test_superproject_content origin/add_sub1 &&
-			test_dir_is_empty sub1 &&
-			git submodule update --init --recursive &&
-			test_submodule_content sub1 origin/add_sub1
-		)
-	'
-	# Replacing a tracked file with a submodule produces an empty
-	# directory ...
-	test_expect_$RESULT "$command: replace tracked file with submodule creates empty directory" '
-		prolog &&
-		reset_work_tree_to replace_sub1_with_file &&
-		(
-			cd submodule_update &&
-			git branch -t replace_file_with_sub1 origin/replace_file_with_sub1 &&
-			$command replace_file_with_sub1 &&
-			test_superproject_content origin/replace_file_with_sub1 &&
-			test_dir_is_empty sub1 &&
-			git submodule update --init --recursive &&
-			test_submodule_content sub1 origin/replace_file_with_sub1
-		)
-	'
-	# ... as does removing a directory with tracked files with a
-	# submodule.
-	if test "$KNOWN_FAILURE_NOFF_MERGE_DOESNT_CREATE_EMPTY_SUBMODULE_DIR" = 1
-	then
-		# Non fast-forward merges fail with "Directory sub1 doesn't
-		# exist. sub1" because the empty submodule directory is not
-		# created
-		RESULT="failure"
-	else
-		RESULT="success"
-	fi
-	test_expect_$RESULT "$command: replace directory with submodule" '
-		prolog &&
-		reset_work_tree_to replace_sub1_with_directory &&
-		(
-			cd submodule_update &&
-			git branch -t replace_directory_with_sub1 origin/replace_directory_with_sub1 &&
-			$command replace_directory_with_sub1 &&
-			test_superproject_content origin/replace_directory_with_sub1 &&
-			test_dir_is_empty sub1 &&
-			git submodule update --init --recursive &&
-			test_submodule_content sub1 origin/replace_directory_with_sub1
-		)
-	'
-
-	######################## Disappearing submodule #######################
-	# Removing a submodule doesn't remove its work tree ...
-	if test "$KNOWN_FAILURE_STASH_DOES_IGNORE_SUBMODULE_CHANGES" = 1
-	then
-		RESULT="failure"
-	else
-		RESULT="success"
-	fi
-	test_expect_$RESULT "$command: removed submodule leaves submodule directory and its contents in place" '
-		prolog &&
-		reset_work_tree_to add_sub1 &&
-		(
-			cd submodule_update &&
-			git branch -t remove_sub1 origin/remove_sub1 &&
-			$command remove_sub1 &&
-			test_superproject_content origin/remove_sub1 &&
-			test_submodule_content sub1 origin/add_sub1
-		)
-	'
-	# ... especially when it contains a .git directory.
-	test_expect_$RESULT "$command: removed submodule leaves submodule containing a .git directory alone" '
-		prolog &&
-		reset_work_tree_to add_sub1 &&
-		(
-			cd submodule_update &&
-			git branch -t remove_sub1 origin/remove_sub1 &&
-			replace_gitfile_with_git_dir sub1 &&
-			$command remove_sub1 &&
-			test_superproject_content origin/remove_sub1 &&
-			test_git_directory_is_unchanged sub1 &&
-			test_submodule_content sub1 origin/add_sub1
-		)
-	'
-	# Replacing a submodule with files in a directory must fail as the
-	# submodule work tree isn't removed ...
-	if test "$KNOWN_FAILURE_NOFF_MERGE_ATTEMPTS_TO_MERGE_REMOVED_SUBMODULE_FILES" = 1
-	then
-		# Non fast-forward merges attempt to merge the former
-		# submodule files with the newly checked out ones in the
-		# directory of the same name while it shouldn't.
-		RESULT="failure"
-	elif test "$KNOWN_FAILURE_FORCED_SWITCH_TESTS" = 1
-	then
-		# All existing tests that use test_submodule_forced_switch()
-		# require this.
-		RESULT="failure"
-	else
-		RESULT="success"
-	fi
-	test_expect_$RESULT "$command: replace submodule with a directory must fail" '
-		prolog &&
-		reset_work_tree_to add_sub1 &&
-		(
-			cd submodule_update &&
-			git branch -t replace_sub1_with_directory origin/replace_sub1_with_directory &&
-			$command replace_sub1_with_directory test_must_fail &&
-			test_superproject_content origin/add_sub1 &&
-			test_submodule_content sub1 origin/add_sub1
-		)
-	'
-	# ... especially when it contains a .git directory.
-	test_expect_$RESULT "$command: replace submodule containing a .git directory with a directory must fail" '
-		prolog &&
-		reset_work_tree_to add_sub1 &&
-		(
-			cd submodule_update &&
-			git branch -t replace_sub1_with_directory origin/replace_sub1_with_directory &&
-			replace_gitfile_with_git_dir sub1 &&
-			$command replace_sub1_with_directory test_must_fail &&
-			test_superproject_content origin/add_sub1 &&
-			test_git_directory_is_unchanged sub1 &&
-			test_submodule_content sub1 origin/add_sub1
-		)
-	'
-	# Replacing it with a file must fail as it could throw away any local
-	# work tree changes ...
-	test_expect_failure "$command: replace submodule with a file must fail" '
-		prolog &&
-		reset_work_tree_to add_sub1 &&
-		(
-			cd submodule_update &&
-			git branch -t replace_sub1_with_file origin/replace_sub1_with_file &&
-			$command replace_sub1_with_file test_must_fail &&
-			test_superproject_content origin/add_sub1 &&
-			test_submodule_content sub1 origin/add_sub1
-		)
-	'
-	# ... or even destroy unpushed parts of submodule history if that
-	# still uses a .git directory.
-	test_expect_failure "$command: replace submodule containing a .git directory with a file must fail" '
-		prolog &&
-		reset_work_tree_to add_sub1 &&
-		(
-			cd submodule_update &&
-			git branch -t replace_sub1_with_file origin/replace_sub1_with_file &&
-			replace_gitfile_with_git_dir sub1 &&
-			$command replace_sub1_with_file test_must_fail &&
-			test_superproject_content origin/add_sub1 &&
-			test_git_directory_is_unchanged sub1 &&
-			test_submodule_content sub1 origin/add_sub1
-		)
-	'
-
-	########################## Modified submodule #########################
-	# Updating a submodule sha1 doesn't update the submodule's work tree
-	if test "$KNOWN_FAILURE_CHERRY_PICK_SEES_EMPTY_COMMIT" = 1
-	then
-		# When cherry picking a SHA-1 update for an ignored submodule
-		# the commit incorrectly fails with "The previous cherry-pick
-		# is now empty, possibly due to conflict resolution."
-		RESULT="failure"
-	else
-		RESULT="success"
-	fi
-	test_expect_$RESULT "$command: modified submodule does not update submodule work tree" '
-		prolog &&
-		reset_work_tree_to add_sub1 &&
-		(
-			cd submodule_update &&
-			git branch -t modify_sub1 origin/modify_sub1 &&
-			$command modify_sub1 &&
-			test_superproject_content origin/modify_sub1 &&
-			test_submodule_content sub1 origin/add_sub1 &&
-			git submodule update &&
-			test_submodule_content sub1 origin/modify_sub1
-		)
-	'
-	# Updating a submodule to an invalid sha1 doesn't update the
-	# submodule's work tree, subsequent update will fail
-	test_expect_$RESULT "$command: modified submodule does not update submodule work tree to invalid commit" '
-		prolog &&
-		reset_work_tree_to add_sub1 &&
-		(
-			cd submodule_update &&
-			git branch -t invalid_sub1 origin/invalid_sub1 &&
-			$command invalid_sub1 &&
-			test_superproject_content origin/invalid_sub1 &&
-			test_submodule_content sub1 origin/add_sub1 &&
-			test_must_fail git submodule update &&
-			test_submodule_content sub1 origin/add_sub1
-		)
-	'
-	# Updating a submodule from an invalid sha1 doesn't update the
-	# submodule's work tree, subsequent update will succeed
-	test_expect_$RESULT "$command: modified submodule does not update submodule work tree from invalid commit" '
-		prolog &&
-		reset_work_tree_to invalid_sub1 &&
-		(
-			cd submodule_update &&
-			git branch -t valid_sub1 origin/valid_sub1 &&
-			$command valid_sub1 &&
-			test_superproject_content origin/valid_sub1 &&
-			test_dir_is_empty sub1 &&
-			git submodule update --init --recursive &&
-			test_submodule_content sub1 origin/valid_sub1
-		)
-	'
-}
-
-# Declares and invokes several tests that, in various situations, checks that
-# the provided transition function:
-#  - succeeds in updating the worktree and index of a superproject to a target
-#    commit, or fails atomically (depending on the test situation)
-#  - if succeeds, the contents of submodule directories are unchanged
-#  - if succeeds, once "git submodule update" is invoked, the contents of
-#    submodule directories are updated
-#
-# If the command under test is known to not work with submodules in certain
-# conditions, set the appropriate KNOWN_FAILURE_* variable used in the tests
-# below to 1.
-#
-# The first argument of the callback function will be the name of the submodule.
-#
-# Removing a submodule containing a .git directory must fail even when forced
-# to protect the history! If we are testing this case, the second argument of
-# the callback function will be 'test_must_fail', else it will be the empty
-# string.
-#
-# The following example uses `git some-command` as an example command to be
-# tested. It updates the worktree and index to match a target, but not any
-# submodule directories.
-#
-# my_func () {
-#   ...prepare for `git some-command` to be run...
-#   $2 git some-command "$1" &&
-#   if test -n "$2"
-#   then
-#     return
-#   fi &&
-#   ...check the state after git some-command is run...
-# }
-# test_submodule_switch_func "my_func"
-test_submodule_switch_func () {
-	command="$1"
-	test_submodule_switch_common "$command"
-
-	# An empty directory does not prevent the creation of a submodule of
-	# the same name, but a file does.
-	test_expect_success "$command: added submodule doesn't remove untracked unignored file with same name" '
-		prolog &&
-		reset_work_tree_to no_submodule &&
-		(
-			cd submodule_update &&
-			git branch -t add_sub1 origin/add_sub1 &&
-			>sub1 &&
-			$command add_sub1 test_must_fail &&
-			test_superproject_content origin/no_submodule &&
-			test_must_be_empty sub1
-		)
-	'
-}
-
-# Ensures that the that the arg either contains "test_must_fail" or is empty.
-may_only_be_test_must_fail () {
-	test -z "$1" || test "$1" = test_must_fail || die
-}
-
-git_test_func () {
-	may_only_be_test_must_fail "$2" &&
-	$2 git $gitcmd "$1"
-}
-
-test_submodule_switch () {
-	gitcmd="$1"
-	test_submodule_switch_func "git_test_func"
-}
-
-# Same as test_submodule_switch(), except that throwing away local changes in
-# the superproject is allowed.
-test_submodule_forced_switch () {
-	gitcmd="$1"
-	command="git_test_func"
-	KNOWN_FAILURE_FORCED_SWITCH_TESTS=1
-	test_submodule_switch_common "$command"
-
-	# When forced, a file in the superproject does not prevent creating a
-	# submodule of the same name.
-	test_expect_success "$command: added submodule does remove untracked unignored file with same name when forced" '
-		prolog &&
-		reset_work_tree_to no_submodule &&
-		(
-			cd submodule_update &&
-			git branch -t add_sub1 origin/add_sub1 &&
-			>sub1 &&
-			$command add_sub1 &&
-			test_superproject_content origin/add_sub1 &&
-			test_dir_is_empty sub1
-		)
-	'
-}
-
-# Test that submodule contents are correctly updated when switching
-# between commits that change a submodule.
-# Test that the following transitions are correctly handled:
-# (These tests are also above in the case where we expect no change
-#  in the submodule)
-# - Updated submodule
-# - New submodule
-# - Removed submodule
-# - Directory containing tracked files replaced by submodule
-# - Submodule replaced by tracked files in directory
-# - Submodule replaced by tracked file with the same name
-# - Tracked file replaced by submodule
-#
-# New test cases
-# - Removing a submodule with a git directory absorbs the submodules
-#   git directory first into the superproject.
-# - Switching from no submodule to nested submodules
-# - Switching from nested submodules to no submodule
-
-# Internal function; use test_submodule_switch_recursing_with_args() or
-# test_submodule_forced_switch_recursing_with_args() instead.
-test_submodule_recursing_with_args_common () {
-	command="$1 --recurse-submodules"
-
-	######################### Appearing submodule #########################
-	# Switching to a commit letting a submodule appear checks it out ...
-	test_expect_success "$command: added submodule is checked out" '
-		prolog &&
-		reset_work_tree_to_interested no_submodule &&
-		(
-			cd submodule_update &&
-			git branch -t add_sub1 origin/add_sub1 &&
-			$command add_sub1 &&
-			test_superproject_content origin/add_sub1 &&
-			test_submodule_content sub1 origin/add_sub1
-		)
-	'
-	# ... ignoring an empty existing directory.
-	test_expect_success "$command: added submodule is checked out in empty dir" '
-		prolog &&
-		reset_work_tree_to_interested no_submodule &&
-		(
-			cd submodule_update &&
-			mkdir sub1 &&
-			git branch -t add_sub1 origin/add_sub1 &&
-			$command add_sub1 &&
-			test_superproject_content origin/add_sub1 &&
-			test_submodule_content sub1 origin/add_sub1
-		)
-	'
-
-	# Replacing a tracked file with a submodule produces a checked out submodule
-	test_expect_success "$command: replace tracked file with submodule checks out submodule" '
-		prolog &&
-		reset_work_tree_to_interested replace_sub1_with_file &&
-		(
-			cd submodule_update &&
-			git branch -t replace_file_with_sub1 origin/replace_file_with_sub1 &&
-			$command replace_file_with_sub1 &&
-			test_superproject_content origin/replace_file_with_sub1 &&
-			test_submodule_content sub1 origin/replace_file_with_sub1
-		)
-	'
-	# ... as does removing a directory with tracked files with a submodule.
-	test_expect_success "$command: replace directory with submodule" '
-		prolog &&
-		reset_work_tree_to_interested replace_sub1_with_directory &&
-		(
-			cd submodule_update &&
-			git branch -t replace_directory_with_sub1 origin/replace_directory_with_sub1 &&
-			$command replace_directory_with_sub1 &&
-			test_superproject_content origin/replace_directory_with_sub1 &&
-			test_submodule_content sub1 origin/replace_directory_with_sub1
-		)
-	'
-	# Switching to a commit with nested submodules recursively checks them out
-	test_expect_success "$command: nested submodules are checked out" '
-		prolog &&
-		reset_work_tree_to_interested no_submodule &&
-		(
-			cd submodule_update &&
-			git branch -t modify_sub1_recursively origin/modify_sub1_recursively &&
-			$command modify_sub1_recursively &&
-			test_superproject_content origin/modify_sub1_recursively &&
-			test_submodule_content sub1 origin/modify_sub1_recursively &&
-			test_submodule_content -C sub1 sub2 origin/modify_sub1_recursively
-		)
-	'
-
-	######################## Disappearing submodule #######################
-	# Removing a submodule removes its work tree ...
-	test_expect_success "$command: removed submodule removes submodules working tree" '
-		prolog &&
-		reset_work_tree_to_interested add_sub1 &&
-		(
-			cd submodule_update &&
-			git branch -t remove_sub1 origin/remove_sub1 &&
-			$command remove_sub1 &&
-			test_superproject_content origin/remove_sub1 &&
-			! test -e sub1 &&
-			test_must_fail git config -f .git/modules/sub1/config core.worktree
-		)
-	'
-	# ... absorbing a .git directory along the way.
-	test_expect_success "$command: removed submodule absorbs submodules .git directory" '
-		prolog &&
-		reset_work_tree_to_interested add_sub1 &&
-		(
-			cd submodule_update &&
-			git branch -t remove_sub1 origin/remove_sub1 &&
-			replace_gitfile_with_git_dir sub1 &&
-			rm -rf .git/modules &&
-			$command remove_sub1 &&
-			test_superproject_content origin/remove_sub1 &&
-			! test -e sub1 &&
-			test_git_directory_exists sub1
-		)
-	'
-
-	# Replacing it with a file ...
-	test_expect_success "$command: replace submodule with a file" '
-		prolog &&
-		reset_work_tree_to_interested add_sub1 &&
-		(
-			cd submodule_update &&
-			git branch -t replace_sub1_with_file origin/replace_sub1_with_file &&
-			$command replace_sub1_with_file &&
-			test_superproject_content origin/replace_sub1_with_file &&
-			test -f sub1
-		)
-	'
-	RESULTDS=success
-	if test "$KNOWN_FAILURE_DIRECTORY_SUBMODULE_CONFLICTS" = 1
-	then
-		RESULTDS=failure
-	fi
-	# ... must check its local work tree for untracked files
-	test_expect_$RESULTDS "$command: replace submodule with a file must fail with untracked files" '
-		prolog &&
-		reset_work_tree_to_interested add_sub1 &&
-		(
-			cd submodule_update &&
-			git branch -t replace_sub1_with_file origin/replace_sub1_with_file &&
-			: >sub1/untrackedfile &&
-			test_must_fail $command replace_sub1_with_file &&
-			test_superproject_content origin/add_sub1 &&
-			test_submodule_content sub1 origin/add_sub1 &&
-			test -f sub1/untracked_file
-		)
-	'
-
-	# Switching to a commit without nested submodules removes their worktrees
-	test_expect_success "$command: worktrees of nested submodules are removed" '
-		prolog &&
-		reset_work_tree_to_interested add_nested_sub &&
-		(
-			cd submodule_update &&
-			git branch -t no_submodule origin/no_submodule &&
-			$command no_submodule &&
-			test_superproject_content origin/no_submodule &&
-			! test_path_is_dir sub1 &&
-			test_must_fail git config -f .git/modules/sub1/config core.worktree &&
-			test_must_fail git config -f .git/modules/sub1/modules/sub2/config core.worktree
-		)
-	'
-
-	########################## Modified submodule #########################
-	# Updating a submodule sha1 updates the submodule's work tree
-	test_expect_success "$command: modified submodule updates submodule work tree" '
-		prolog &&
-		reset_work_tree_to_interested add_sub1 &&
-		(
-			cd submodule_update &&
-			git branch -t modify_sub1 origin/modify_sub1 &&
-			$command modify_sub1 &&
-			test_superproject_content origin/modify_sub1 &&
-			test_submodule_content sub1 origin/modify_sub1
-		)
-	'
-	# Updating a submodule to an invalid sha1 doesn't update the
-	# superproject nor the submodule's work tree.
-	test_expect_success "$command: updating to a missing submodule commit fails" '
-		prolog &&
-		reset_work_tree_to_interested add_sub1 &&
-		(
-			cd submodule_update &&
-			git branch -t invalid_sub1 origin/invalid_sub1 &&
-			test_must_fail $command invalid_sub1 2>err &&
-			test_i18ngrep sub1 err &&
-			test_superproject_content origin/add_sub1 &&
-			test_submodule_content sub1 origin/add_sub1
-		)
-	'
-	# Updating a submodule does not touch the currently checked out branch in the submodule
-	test_expect_success "$command: submodule branch is not changed, detach HEAD instead" '
-		prolog &&
-		reset_work_tree_to_interested add_sub1 &&
-		(
-			cd submodule_update &&
-			git -C sub1 checkout -b keep_branch &&
-			git -C sub1 rev-parse HEAD >expect &&
-			git branch -t modify_sub1 origin/modify_sub1 &&
-			$command modify_sub1 &&
-			test_superproject_content origin/modify_sub1 &&
-			test_submodule_content sub1 origin/modify_sub1 &&
-			git -C sub1 rev-parse keep_branch >actual &&
-			test_cmp expect actual &&
-			test_must_fail git -C sub1 symbolic-ref HEAD
-		)
-	'
-}
-
-# Declares and invokes several tests that, in various situations, checks that
-# the provided Git command, when invoked with --recurse-submodules:
-#  - succeeds in updating the worktree and index of a superproject to a target
-#    commit, or fails atomically (depending on the test situation)
-#  - if succeeds, the contents of submodule directories are updated
-#
-# Specify the Git command so that "git $GIT_COMMAND --recurse-submodules"
-# works.
-#
-# If the command under test is known to not work with submodules in certain
-# conditions, set the appropriate KNOWN_FAILURE_* variable used in the tests
-# below to 1.
-#
-# Use as follows:
-#
-# test_submodule_switch_recursing_with_args "$GIT_COMMAND"
-test_submodule_switch_recursing_with_args () {
-	cmd_args="$1"
-	command="git $cmd_args"
-	test_submodule_recursing_with_args_common "$command"
-
-	RESULTDS=success
-	if test "$KNOWN_FAILURE_DIRECTORY_SUBMODULE_CONFLICTS" = 1
-	then
-		RESULTDS=failure
-	fi
-	RESULTOI=success
-	if test "$KNOWN_FAILURE_SUBMODULE_OVERWRITE_IGNORED_UNTRACKED" = 1
-	then
-		RESULTOI=failure
-	fi
-	# Switching to a commit letting a submodule appear cannot override an
-	# untracked file.
-	test_expect_success "$command: added submodule doesn't remove untracked file with same name" '
-		prolog &&
-		reset_work_tree_to_interested no_submodule &&
-		(
-			cd submodule_update &&
-			git branch -t add_sub1 origin/add_sub1 &&
-			: >sub1 &&
-			test_must_fail $command add_sub1 &&
-			test_superproject_content origin/no_submodule &&
-			test_must_be_empty sub1
-		)
-	'
-	# ... but an ignored file is fine.
-	test_expect_$RESULTOI "$command: added submodule removes an untracked ignored file" '
-		test_when_finished "rm submodule_update/.git/info/exclude" &&
-		prolog &&
-		reset_work_tree_to_interested no_submodule &&
-		(
-			cd submodule_update &&
-			git branch -t add_sub1 origin/add_sub1 &&
-			: >sub1 &&
-			echo sub1 >.git/info/exclude &&
-			$command add_sub1 &&
-			test_superproject_content origin/add_sub1 &&
-			test_submodule_content sub1 origin/add_sub1
-		)
-	'
-
-	# Replacing a submodule with files in a directory must succeeds
-	# when the submodule is clean
-	test_expect_$RESULTDS "$command: replace submodule with a directory" '
-		prolog &&
-		reset_work_tree_to_interested add_sub1 &&
-		(
-			cd submodule_update &&
-			git branch -t replace_sub1_with_directory origin/replace_sub1_with_directory &&
-			$command replace_sub1_with_directory &&
-			test_superproject_content origin/replace_sub1_with_directory &&
-			test_submodule_content sub1 origin/replace_sub1_with_directory
-		)
-	'
-	# ... absorbing a .git directory.
-	test_expect_$RESULTDS "$command: replace submodule containing a .git directory with a directory must absorb the git dir" '
-		prolog &&
-		reset_work_tree_to_interested add_sub1 &&
-		(
-			cd submodule_update &&
-			git branch -t replace_sub1_with_directory origin/replace_sub1_with_directory &&
-			replace_gitfile_with_git_dir sub1 &&
-			rm -rf .git/modules &&
-			$command replace_sub1_with_directory &&
-			test_superproject_content origin/replace_sub1_with_directory &&
-			test_git_directory_exists sub1
-		)
-	'
-
-	# ... and ignored files are ignored
-	test_expect_success "$command: replace submodule with a file works ignores ignored files in submodule" '
-		test_when_finished "rm submodule_update/.git/modules/sub1/info/exclude" &&
-		prolog &&
-		reset_work_tree_to_interested add_sub1 &&
-		(
-			cd submodule_update &&
-			git branch -t replace_sub1_with_file origin/replace_sub1_with_file &&
-			echo ignored >.git/modules/sub1/info/exclude &&
-			: >sub1/ignored &&
-			$command replace_sub1_with_file &&
-			test_superproject_content origin/replace_sub1_with_file &&
-			test -f sub1
-		)
-	'
-
-	test_expect_success "git -c submodule.recurse=true $cmd_args: modified submodule updates submodule work tree" '
-		prolog &&
-		reset_work_tree_to_interested add_sub1 &&
-		(
-			cd submodule_update &&
-			git branch -t modify_sub1 origin/modify_sub1 &&
-			git -c submodule.recurse=true $cmd_args modify_sub1 &&
-			test_superproject_content origin/modify_sub1 &&
-			test_submodule_content sub1 origin/modify_sub1
-		)
-	'
-
-	test_expect_success "$command: modified submodule updates submodule recursively" '
-		prolog &&
-		reset_work_tree_to_interested add_nested_sub &&
-		(
-			cd submodule_update &&
-			git branch -t modify_sub1_recursively origin/modify_sub1_recursively &&
-			$command modify_sub1_recursively &&
-			test_superproject_content origin/modify_sub1_recursively &&
-			test_submodule_content sub1 origin/modify_sub1_recursively &&
-			test_submodule_content -C sub1 sub2 origin/modify_sub1_recursively
-		)
-	'
-}
-
-# Same as test_submodule_switch_recursing_with_args(), except that throwing
-# away local changes in the superproject is allowed.
-test_submodule_forced_switch_recursing_with_args () {
-	cmd_args="$1"
-	command="git $cmd_args"
-	test_submodule_recursing_with_args_common "$command"
-
-	RESULT=success
-	if test "$KNOWN_FAILURE_DIRECTORY_SUBMODULE_CONFLICTS" = 1
-	then
-		RESULT=failure
-	fi
-	# Switching to a commit letting a submodule appear does not care about
-	# an untracked file.
-	test_expect_success "$command: added submodule does remove untracked unignored file with same name when forced" '
-		prolog &&
-		reset_work_tree_to_interested no_submodule &&
-		(
-			cd submodule_update &&
-			git branch -t add_sub1 origin/add_sub1 &&
-			>sub1 &&
-			$command add_sub1 &&
-			test_superproject_content origin/add_sub1 &&
-			test_submodule_content sub1 origin/add_sub1
-		)
-	'
-
-	# Replacing a submodule with files in a directory ...
-	test_expect_success "$command: replace submodule with a directory" '
-		prolog &&
-		reset_work_tree_to_interested add_sub1 &&
-		(
-			cd submodule_update &&
-			git branch -t replace_sub1_with_directory origin/replace_sub1_with_directory &&
-			$command replace_sub1_with_directory &&
-			test_superproject_content origin/replace_sub1_with_directory
-		)
-	'
-	# ... absorbing a .git directory.
-	test_expect_success "$command: replace submodule containing a .git directory with a directory must fail" '
-		prolog &&
-		reset_work_tree_to_interested add_sub1 &&
-		(
-			cd submodule_update &&
-			git branch -t replace_sub1_with_directory origin/replace_sub1_with_directory &&
-			replace_gitfile_with_git_dir sub1 &&
-			rm -rf .git/modules/sub1 &&
-			$command replace_sub1_with_directory &&
-			test_superproject_content origin/replace_sub1_with_directory &&
-			test_git_directory_exists sub1
-		)
-	'
-
-	# ... even if the submodule contains ignored files
-	test_expect_success "$command: replace submodule with a file ignoring ignored files" '
-		prolog &&
-		reset_work_tree_to_interested add_sub1 &&
-		(
-			cd submodule_update &&
-			git branch -t replace_sub1_with_file origin/replace_sub1_with_file &&
-			: >sub1/expect &&
-			$command replace_sub1_with_file &&
-			test_superproject_content origin/replace_sub1_with_file
-		)
-	'
-
-	# Updating a submodule from an invalid sha1 updates
-	test_expect_success "$command: modified submodule does update submodule work tree from invalid commit" '
-		prolog &&
-		reset_work_tree_to_interested invalid_sub1 &&
-		(
-			cd submodule_update &&
-			git branch -t valid_sub1 origin/valid_sub1 &&
-			$command valid_sub1 &&
-			test_superproject_content origin/valid_sub1 &&
-			test_submodule_content sub1 origin/valid_sub1
-		)
-	'
-
-	# Old versions of Git were buggy writing the .git link file
-	# (e.g. before f8eaa0ba98b and then moving the superproject repo
-	# whose submodules contained absolute paths)
-	test_expect_success "$command: updating submodules fixes .git links" '
-		prolog &&
-		reset_work_tree_to_interested add_sub1 &&
-		(
-			cd submodule_update &&
-			git branch -t modify_sub1 origin/modify_sub1 &&
-			echo "gitdir: bogus/path" >sub1/.git &&
-			$command modify_sub1 &&
-			test_superproject_content origin/modify_sub1 &&
-			test_submodule_content sub1 origin/modify_sub1
-		)
-	'
-
-	test_expect_success "$command: changed submodule worktree is reset" '
-		prolog &&
-		reset_work_tree_to_interested add_sub1 &&
-		(
-			cd submodule_update &&
-			rm sub1/file1 &&
-			: >sub1/new_file &&
-			git -C sub1 add new_file &&
-			$command HEAD &&
-			test_path_is_file sub1/file1 &&
-			test_path_is_missing sub1/new_file
-		)
-	'
-}