t / t4013 / diff.diff-tree_-c_--stat_--summary_sideon commit maint: check return of split_cmdline to avoid bad config strings (dc4179f)
   1$ git diff-tree -c --stat --summary side
   2c7a2ab9e8eac7b117442a607d5a9b3950ae34d5a
   3 dir/sub |    2 ++
   4 file0   |    3 +++
   5 file3   |    4 ++++
   6 3 files changed, 9 insertions(+), 0 deletions(-)
   7 create mode 100644 file3
   8$