git-diff-tree -p master binary >B.diff
git-diff-tree -p -C master binary >C.diff
-git-diff-tree -p --full-index master binary >BF.diff
-git-diff-tree -p --full-index -C master binary >CF.diff
+git-diff-tree -p --binary master binary >BF.diff
+git-diff-tree -p --binary -C master binary >CF.diff
test_expect_success 'stat binary diff -- should not fail.' \
'git-checkout master