A simple char-based progress when we know the length, as we copy to the output file stream <!-- sl --> [](https://www.devlooped.com/SponsorLink/github/issues/?s=devlooped) [](https://www.devlooped.com/SponsorLink/github/issues/?s=devlooped) <!-- sl -->
A simple char-based progress when we know the length, as we copy to the output file stream