t / t4013 / diff.diff_--no-index_--raw_dir2_diron commit diff.c: emit_diff_symbol learns DIFF_SYMBOL_WORDS[_PORCELAIN] (ff95867)
   1$ git diff --no-index --raw dir2 dir
   2:000000 100644 0000000... 0000000... A  dir/sub
   3$