add commented `diff -u' command

1 files changed, 4 insertions, 0 deletions

diff --git a/tests/cp/same-file b/tests/cp/same-file
index 910973f66..b1b9f8693 100755
--- a/tests/cp/same-file
+++ b/tests/cp/same-file
@@ -51,6 +51,7 @@ for args in 'foo symlink' 'symlink foo' 'foo foo' 'sl1 sl2' 'foo hardlink'; do
     case "$args" in *sl2*) ln -s foo sl2;; esac
     (
       (
+	echo 1>&2 $CP $options $args
 	$CP $options $args 2>.err
 	echo $? $options
 
@@ -166,5 +167,8 @@ cat <<\EOF > $expected
 
 EOF
 
+# Uncomment this if you see a failure and want to try to diagnose it.
+# diff -u $expected $actual 1>&2
+
 cmp $expected $actual
 exit $?