t / t4101 / diff.2-1on commit t5000, t5003: do not use test_cmp to compare binary files (b93e6e3)
   1--- a/frotz
   2+++ b/frotz
   3@@ -1,2 +1,3 @@
   4 a
   5-b
   6\ No newline at end of file
   7+b
   8+c