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

[Paul Robinson via Phabricator via llvm-commits]

probinson added a comment.

Searching llvm and clang tests for uses of diff, mostly they are diffing two generated files (e.g. `diff %t1.ll %t2.ll`).
There are diffs against canned files in an Inputs directory, and some of those tests pipe the generated output to diff's stdin.  There are a number of these in clang/test/Analysis that diff output against canned XML results, so these are not small outputs you can readily verify with FileCheck.
I noticed some invocations passing `-aub` options to diff.
I found one example of redirecting diff's output (to /dev/null).


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D65697/new/

https://reviews.llvm.org/D65697