submodule update: remove unnecessary orig_flags variable

cmd_update() in the submodule script tries to preserve the options given
on the command line in the "orig_flags" variable to pass them on into the
recursion when the '--recursive' option is given. But this isn't necessary
because all the variables set by the options will be seen in the recursion
too as that is achieved by executing "eval cmd_update".

The same has already been done for cmd_status() in e15bec0, so let's
clean up cmd_update() likewise. Also add a test to make sure that a
submodule name given on the command line is not passed into the recursion
(which was the goal of adding the orig_flags variable in 98dbe63).

Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

git-submodule.sh

@@ -706,7 +706,6 @@ cmd_deinit()
 cmd_update()
 {
 	# parse $args after "submodule ... update".
-	orig_flags=
 	while test $# -ne 0
 	do
 		case "$1" in
@@ -731,7 +730,6 @@ cmd_update()
 		--reference)
 			case "$2" in '') usage ;; esac
 			reference="--reference=$2"
-			orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 			shift
 			;;
 		--reference=*)
@@ -765,7 +763,6 @@ cmd_update()
 			break
 			;;
 		esac
-		orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 		shift
 	done
 
@@ -909,7 +906,7 @@ Maybe you want to use 'update --init'?")"
 				prefix="$prefix$sm_path/"
 				clear_local_git_env
 				cd "$sm_path" &&
-				eval cmd_update "$orig_flags"
+				eval cmd_update
 			)
 			res=$?
 			if test $res -gt 0

t/t7406-submodule-update.sh

@@ -747,6 +747,17 @@ test_expect_success 'submodule update clone shallow submodule' '
 	 (cd submodule &&
 	  test 1 = $(git log --oneline | wc -l)
 	 )
+)
+'
+
+test_expect_success 'submodule update --recursive drops module name before recursing' '
+	(cd super2 &&
+	 (cd deeper/submodule/subsubmodule &&
+	  git checkout HEAD^
+	 ) &&
+	 git submodule update --recursive deeper/submodule >actual &&
+	 test_i18ngrep "Submodule path .deeper/submodule/subsubmodule.: checked out" actual
 	)
 '
+
 test_done