gc: config option for running --auto in background

diff --git a/git-submodule.sh b/git-submodule.sh
index 2677f2e8b3c57dc5c1a632e5705b26f74cbd7137..4a30087768a16d77bfcec41889f58b64fdf5f89c 100755 (executable)
--- a/git-submodule.sh
+++ b/git-submodule.sh
@@ -622,7 +622,7 @@ cmd_init()
                   test -z "$(git config submodule."$name".update)"
                then
                        case "$upd" in
-                       rebase | merge | none)
+                       checkout | rebase | merge | none)
                                ;; # known modes of updating
                        *)
                                echo >&2 "warning: unknown update mode '$upd' suggested for submodule '$name'"
@@ -805,6 +805,17 @@ cmd_update()
                        update_module=$update
                else
                        update_module=$(git config submodule."$name".update)
+                       case "$update_module" in
+                       '')
+                               ;; # Unset update mode
+                       checkout | rebase | merge | none)
+                               ;; # Known update modes
+                       !*)
+                               ;; # Custom update command
+                       *)
+                               die "$(eval_gettext "Invalid update mode '$update_module' for submodule '$name'")"
+                               ;;
+                       esac
                fi
 
                displaypath=$(relative_path "$prefix$sm_path")