README: update stale and/or incorrect information

diff --git a/t/t1400-update-ref.sh b/t/t1400-update-ref.sh
index 4fd83a667ac8b08bef090d303bc4434969874780..e415ee0bbf1dcf45f3ee771d0fefedb1c8fa4246 100755 (executable)
--- a/t/t1400-update-ref.sh
+++ b/t/t1400-update-ref.sh
@@ -74,6 +74,24 @@ test_expect_success "delete $m (by HEAD)" '
 '
 rm -f .git/$m
 
+test_expect_success \
+       "create $m (by HEAD)" \
+       "git update-ref HEAD $A &&
+        test $A"' = $(cat .git/'"$m"')'
+test_expect_success \
+       "pack refs" \
+       "git pack-refs --all"
+test_expect_success \
+       "move $m (by HEAD)" \
+       "git update-ref HEAD $B $A &&
+        test $B"' = $(cat .git/'"$m"')'
+test_expect_success "delete $m (by HEAD) should remove both packed and loose $m" '
+       git update-ref -d HEAD $B &&
+       ! grep "$m" .git/packed-refs &&
+       ! test -f .git/$m
+'
+rm -f .git/$m
+
 cp -f .git/HEAD .git/HEAD.orig
 test_expect_success "delete symref without dereference" '
        git update-ref --no-deref -d HEAD &&