t / t4013 / diff.diff-tree_-c_--stat_--summary_masteron commit t4013: add more tests around -c and --cc (47979d5)
   1$ git diff-tree -c --stat --summary master
   2176b998f5d647cbd77a9d8acf4531e930754d16d
   3 dir/sub |    2 ++
   4 file0   |    3 +++
   5 2 files changed, 5 insertions(+), 0 deletions(-)
   6$