Thank you pryrt
. Your second example is exactly what I asked for in my first post. I have already extended it to test newlines by appending \n to the input string and \r\n to the expected output string (and removing chomp). My project started as a minor annoyance and ended with a one-line solution. I never dreamed that in between, I would need to learn details of windows (including a reference to an old DOS manual to get started), Unicode, and even perl (I have never used a child process).
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