t / t4013 / diff.diff-tree_--cc_--stat_--summary_masteron commit t/t1304: use 'test -r' to test readability rather than looking at mode bits (71c4d6c)
   1$ git diff-tree --cc --stat --summary master
   259d314ad6f356dd08601a4cd5e530381da3e3c64
   3 dir/sub |    2 ++
   4 file0   |    3 +++
   5 2 files changed, 5 insertions(+), 0 deletions(-)
   6$