'
+test_expect_success SYMLINKS 'typechange diff' '
+ rm -f file &&
+ ln -s elif file &&
+ GIT_EXTERNAL_DIFF=echo git diff | {
+ read path oldfile oldhex oldmode newfile newhex newmode &&
+ test "z$path" = zfile &&
+ test "z$oldmode" = z100644 &&
+ test "z$newhex" = "z$_z40" &&
+ test "z$newmode" = z120000 &&
+ oh=$(git rev-parse --verify HEAD:file) &&
+ test "z$oh" = "z$oldhex"
+ } &&
+ GIT_EXTERNAL_DIFF=echo git diff --no-ext-diff >actual &&
+ git diff >expect &&
+ test_cmp expect actual
+'
+
test_expect_success 'diff attribute' '
+ git reset --hard &&
+ echo third >file &&
git config diff.parrot.command echo &&