[PATCH] D65697: [lit] Fix internal env calling internal commands

[Paul Robinson via Phabricator via llvm-commits]

probinson added a comment.

In D65697#1638018 <https://reviews.llvm.org/D65697#1638018>, @probinson wrote:

> I found one example of redirecting diff's output (to /dev/null).


This one is in llvm/test/tools/llvm-cov/llvm-cov.test (line 91): `blah | not diff -u somefile - >/dev/null` which IMO could use `-q` and not redirect.  But if we make `diff` always be external, it doesn't matter.


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https://reviews.llvm.org/D65697