cat <<\EOF > expected
changed group of `f' to G1
changed group of `f' to G2
-changed group of `f' to G2
-changed group of `f' to G1
changed group of `f' to G1
+group of `f' retained as G1
changed group of `f' to G2
changed group of `d/f3' to G2
changed group of `d' to G2
changed group of `d/f3' to G1
changed group of `d' to G1
changed group of `d' to G2
-changed group of `symlink' to G2
changed ownership of `f' to :G2
changed group of `symlink' to G1
changed ownership of `f' to :G2