ion~%&quot; i))
                        (sleep 0.1)))

Testing the progressbar
=====This is 10-th iteration
====This is 20-th iteration
=====This is 30-th iteration
======This is 40-th iteration
====This is 50-th iteration
=====This is 60-th iteration
======This is 70-th iteration
====This is 80-th iteration
=====This is 90-th iteration
======This is 100-th iteration

Finished in 10.28 seconds</code></pre><p>It is interesting, is it possible to detect that some output was written to the *standard-output* an