t / t4013 / diff.diff_--cached_--_file0on commit files-backend: use `die("BUG: ...")`, not `die("internal error: ...")` (04aea8d)
   1diff --git a/file0 b/file0
   2new file mode 100644
   3index 0000000..10a8a9f
   4--- /dev/null
   5+++ b/file0
   6@@ -0,0 +1,9 @@
   7+1
   8+2
   9+3
  10+4
  11+5
  12+6
  13+A
  14+B
  15+C