anchor.diff:  (defun windows-only-test/run/progra/process/output-stream ()
     nil)
   
  -
   (deftest test/run-program/process-output-stream ()
     (common-test/run-program/process-output-stream)
     (using-unix
  
positive.code:               '("echo" "Hello World") 'slurp-stream-string)))
      (is (string= ret (nl "Hello World"))))
  
    ;; Test that run-program/process-output-stream fails properly with an
    ;; empty program string
    (signals error (run-program/process-output-stream '("")
                                                      'slurp-stream-lines))
  
    ;; Test that run-program/process-output-stream fails properly with an
    ;; program list containing a nil executable
  
negative.code:   ;; Test that run-program/process-output-stream fails properly when the
    ;; executable doesn't exist.
    (signals error (run-program/process-output-stream '("does-not-exist")
                                                      'slurp-stream-lines))
    (signals error (run-program/process-output-stream "does-not-exist"
                                                      'slurp-stream-lines)))
  
  (defun unix-only-test/run-program/process-output-stream ()
  