[PATCH v4 3/4] submodule: support running in multiple worktree setup

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

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
 Documentation/git-worktree.txt | 8 ++++++++
 git-submodule.sh               | 8 ++++----
 2 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/Documentation/git-worktree.txt b/Documentation/git-worktree.txt
index 41350db..2a5661d 100644
--- a/Documentation/git-worktree.txt
+++ b/Documentation/git-worktree.txt
@@ -142,6 +142,14 @@ to share to all working directories:
    you are sure you always use sparse checkout for all working
    directories.
 
+ - `submodule.*` in current state should not be shared because the
+   information is tied to a particular version of .gitmodules in a
+   working directory.
+
+ - `remote.*` added by submodules may be per working directory as
+   well, unless you are sure remotes from all possible submodules in
+   history are consistent.
+
 DETAILS
 -------
 Each linked working tree has a private sub-directory in the repository's
diff --git a/git-submodule.sh b/git-submodule.sh
index 4ec7546..7b576f5 100755
--- a/git-submodule.sh
+++ b/git-submodule.sh
@@ -261,7 +261,7 @@ or you are unsure what this means choose another name with the '--name' option."
 			esac
 		) || die "$(eval_gettext "Unable to checkout submodule '\$sm_path'")"
 	fi
-	git config submodule."$sm_name".url "$realrepo"
+	git config --worktree submodule."$sm_name".url "$realrepo"
 
 	git add $force "$sm_path" ||
 	die "$(eval_gettext "Failed to add submodule '\$sm_path'")"
@@ -461,7 +461,7 @@ Submodule work tree '\$displaypath' contains a .git directory
 			# Remove the whole section so we have a clean state when
 			# the user later decides to init this submodule again
 			url=$(git config submodule."$name".url)
-			git config --remove-section submodule."$name" 2>/dev/null &&
+			git config --worktree --remove-section submodule."$name" 2>/dev/null &&
 			say "$(eval_gettext "Submodule '\$name' (\$url) unregistered for path '\$displaypath'")"
 		fi
 	done
@@ -1106,7 +1106,7 @@ cmd_sync()
 		then
 			displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
 			say "$(eval_gettext "Synchronizing submodule url for '\$displaypath'")"
-			git config submodule."$name".url "$super_config_url"
+			git config --worktree submodule."$name".url "$super_config_url"
 
 			if test -e "$sm_path"/.git
 			then
@@ -1114,7 +1114,7 @@ cmd_sync()
 				sanitize_submodule_env
 				cd "$sm_path"
 				remote=$(get_default_remote)
-				git config remote."$remote".url "$sub_origin_url"
+				git config --worktree remote."$remote".url "$sub_origin_url"
 
 				if test -n "$recursive"
 				then
-- 
2.9.1.566.gbd532d4