[llvm] [llvm-lit] Print environment variables when using env without subcommand (PR #98414)

[James Henderson via llvm-commits]

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@@ -0,0 +1,35 @@
+# Check default environment.
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jh7370 wrote:

Nit: for newer tests, I tend to recommend using `##` for comments, to help them stand out from lit/FIleCheck lines. Since you're splitting the old test, this effectively becomes a new test, so it's a good chance to do that bit of tidying up.

https://github.com/llvm/llvm-project/pull/98414