t / t4013 / diff.noellipses-diff-tree_--root_-r_--abbrev=4_initialon commit pretty: allow %(trailers) options with explicit value (4f732e0)
   1$ git diff-tree --root -r --abbrev=4 initial
   2444ac553ac7612cc88969031b02b3767fb8a353a
   3:000000 100644 0000 35d2 A      dir/sub
   4:000000 100644 0000 01e7 A      file0
   5:000000 100644 0000 01e7 A      file2
   6$