[llvm-dev] [llvm-lit] Old echo causes test failure on windows

[Michael Kruse via llvm-dev]

I assumed that when using the internal shell (non-optional under
Windows), lit would only use its implementation of shell-builtins [1].
If this is not the case yet, I'd vote to do so since I would
understand the option to replace the environment's shell. Shell's
generally prioritize their builtins over executables found in $PATH, I
think lit should do the same.

Michael

[1] https://github.com/llvm/llvm-project/blob/2ac199993764e068494a69a85af098c0ae1ff37e/llvm/utils/lit/lit/TestRunner.py#L624