[PATCH] D41776: [lit] Implement "-r" option for builtin "diff" command + a test using that.

[Vedant Kumar via Phabricator via llvm-commits]

vsk added a comment.

I haven't looked too closely, but I think this test might fail:

  RUN: mkdir -p %t/A %t/B
  RUN: touch %t/A/only_in_a %t/B/only_in_b
  RUN: not diff -r %t/A %t/B

If there are tests for lit itself, it might be useful to check this one in.


https://reviews.llvm.org/D41776