[PATCH 07/10] submodule foreach: send messages to stderr

[Stefan Beller <sbeller@google.com>]

Reroute the output of stdout to stderr as it is just informative
messages, not to be consumed by machines.

This should not regress any scripts that try to parse the
current output, as the output is already internationalized
and therefore unstable.

Signed-off-by: Stefan Beller <sbeller@google.com>
---
 git-submodule.sh             |  2 +-
 t/t7407-submodule-foreach.sh | 35 ++++++++++++++++++++++-------------
 2 files changed, 23 insertions(+), 14 deletions(-)

diff --git a/git-submodule.sh b/git-submodule.sh
index 3f67f4e..80270db 100755
--- a/git-submodule.sh
+++ b/git-submodule.sh
@@ -341,7 +341,7 @@ cmd_foreach()
 		if test -e "$sm_path"/.git
 		then
 			displaypath=$(relative_path "$prefix$sm_path")
-			say "$(eval_gettext "Entering '\$displaypath'")"
+			say >&2 "$(eval_gettext "Entering '\$displaypath'")"
 			name=$(git submodule--helper name "$sm_path")
 			(
 				prefix="$prefix$sm_path/"
diff --git a/t/t7407-submodule-foreach.sh b/t/t7407-submodule-foreach.sh
index 6ba5daf..f9b979a 100755
--- a/t/t7407-submodule-foreach.sh
+++ b/t/t7407-submodule-foreach.sh
@@ -61,29 +61,36 @@ sub3sha1=$(cd super/sub3 && git rev-parse HEAD)
 
 pwd=$(pwd)
 
-cat > expect <<EOF
-Entering 'sub1'
+cat >expect <<EOF
 $pwd/clone-foo1-sub1-$sub1sha1
-Entering 'sub3'
 $pwd/clone-foo3-sub3-$sub3sha1
 EOF
 
+cat >expect2 <<EOF
+Entering 'sub1'
+Entering 'sub3'
+EOF
+
 test_expect_success 'test basic "submodule foreach" usage' '
 	git clone super clone &&
 	(
 		cd clone &&
 		git submodule update --init -- sub1 sub3 &&
-		git submodule foreach "echo \$toplevel-\$name-\$path-\$sha1" > ../actual &&
+		git submodule foreach "echo \$toplevel-\$name-\$path-\$sha1" >../actual 2>../actual2 &&
 		git config foo.bar zar &&
 		git submodule foreach "git config --file \"\$toplevel/.git/config\" foo.bar"
 	) &&
-	test_i18ncmp expect actual
+	test_i18ncmp expect actual &&
+	test_i18ncmp expect2 actual2
 '
 
-cat >expect <<EOF
+cat >expect2 <<EOF
 Entering '../sub1'
-$pwd/clone-foo1-../sub1-$sub1sha1
 Entering '../sub3'
+EOF
+
+cat >expect <<EOF
+$pwd/clone-foo1-../sub1-$sub1sha1
 $pwd/clone-foo3-../sub3-$sub3sha1
 EOF
 
@@ -91,9 +98,10 @@ test_expect_success 'test "submodule foreach" from subdirectory' '
 	mkdir clone/sub &&
 	(
 		cd clone/sub &&
-		git submodule foreach "echo \$toplevel-\$name-\$sm_path-\$sha1" >../../actual
+		git submodule foreach "echo \$toplevel-\$name-\$sm_path-\$sha1" >../../actual 2>../../actual2
 	) &&
-	test_i18ncmp expect actual
+	test_i18ncmp expect actual &&
+	test_i18ncmp expect2 actual2
 '
 
 test_expect_success 'setup nested submodules' '
@@ -172,7 +180,7 @@ EOF
 test_expect_success 'test messages from "foreach --recursive"' '
 	(
 		cd clone2 &&
-		git submodule foreach --recursive "true" > ../actual
+		git submodule foreach --recursive "true" 2>../actual
 	) &&
 	test_i18ncmp expect actual
 '
@@ -192,7 +200,7 @@ test_expect_success 'test messages from "foreach --recursive" from subdirectory'
 		cd clone2 &&
 		mkdir untracked &&
 		cd untracked &&
-		git submodule foreach --recursive >../../actual
+		git submodule foreach --recursive 2>../../actual
 	) &&
 	test_i18ncmp expect actual
 '
@@ -210,9 +218,10 @@ EOF
 test_expect_success 'test "foreach --quiet --recursive"' '
 	(
 		cd clone2 &&
-		git submodule foreach -q --recursive "echo \$name-\$path" > ../actual
+		git submodule foreach -q --recursive "echo \$name-\$path" >../actual 2> ../actual2
 	) &&
-	test_cmp expect actual
+	test_cmp expect actual &&
+	test_must_be_empty actual2
 '
 
 test_expect_success 'use "update --recursive" to checkout all submodules' '
-- 
2.8.0.32.g71f8beb.dirty