submodule sync: Update "submodule.<name>.url" for empty directories

If a submodule directory has not been filled by "git submodule update"
yet, then "git submodule sync" must still update the super-project's
configuration for submodule.<name>.url.

This situation occurs when switching between branches with a module from
different urls and other branches without the submodule.

Signed-off-by: Andreas Köhler <andi5.py@gmx.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/git-submodule.sh b/git-submodule.sh
index 9ebbab798d21147fc019b6183cad0c462c9dafca..c291eed59cca35d4b08285133acaca29bd80d372 100755 (executable)
--- a/git-submodule.sh
+++ b/git-submodule.sh
@@ -836,11 +836,12 @@ cmd_sync()
                        ;;
                esac
 
+               say "Synchronizing submodule url for '$name'"
+               git config submodule."$name".url "$url"
+
                if test -e "$path"/.git
                then
                (
-                       say "Synchronizing submodule url for '$name'"
-                       git config submodule."$name".url "$url"
                        clear_local_git_env
                        cd "$path"
                        remote=$(get_default_remote)

diff --git a/t/t7403-submodule-sync.sh b/t/t7403-submodule-sync.sh
index 02522f9627eea8166b2d4709ef3519b23c8dd3d5..e5b19538b0192e5ab5f9081b0c10ac0dc8497cb6 100755 (executable)
--- a/t/t7403-submodule-sync.sh
+++ b/t/t7403-submodule-sync.sh
@@ -23,7 +23,9 @@ test_expect_success setup '
         git commit -m "submodule"
        ) &&
        git clone super super-clone &&
-       (cd super-clone && git submodule update --init)
+       (cd super-clone && git submodule update --init) &&
+       git clone super empty-clone &&
+       (cd empty-clone && git submodule init)
 '
 
 test_expect_success 'change submodule' '
@@ -64,4 +66,12 @@ test_expect_success '"git submodule sync" should update submodule URLs' '
        )
 '
 
+test_expect_success '"git submodule sync" should update submodule URLs if not yet cloned' '
+       (cd empty-clone &&
+        git pull &&
+        git submodule sync &&
+        test -d "$(git config submodule.submodule.url)"
+       )
+'
+
 test_done