t/README: justify why "! grep foo" is sufficient

diff --git a/t/t7406-submodule-update.sh b/t/t7406-submodule-update.sh
index f0b33053ab01c692a4dda15c0f631aaa45fb81b9..0825a928dfa2a340f6fce6e2313324bd5d63ea7f 100755 (executable)
--- a/t/t7406-submodule-update.sh
+++ b/t/t7406-submodule-update.sh
@@ -323,6 +323,21 @@ test_expect_success 'submodule update - command in .git/config catches failure'
        )
 '
 
+test_expect_success 'submodule init does not copy command into .git/config' '
+       (cd super &&
+        H=$(git ls-files -s submodule | cut -d" " -f2) &&
+        mkdir submodule1 &&
+        git update-index --add --cacheinfo 160000 $H submodule1 &&
+        git config -f .gitmodules submodule.submodule1.path submodule1 &&
+        git config -f .gitmodules submodule.submodule1.url ../submodule &&
+        git config -f .gitmodules submodule.submodule1.update !false &&
+        git submodule init submodule1 &&
+        echo "none" >expect &&
+        git config submodule.submodule1.update >actual &&
+        test_cmp expect actual
+       )
+'
+
 test_expect_success 'submodule init picks up rebase' '
        (cd super &&
         git config -f .gitmodules submodule.rebasing.update rebase &&