If I have got a ProgressBar with ProgressStyle that uses a template like "… {elapsed}/{duration} …". As usual, I repeatedly call .inc(…) and finally .finish(). However, I am typically getting this kind of printout:

• 0s/4s
• 1s/4s
• 2s/4s
• 3s/4s
• 4s/4s
• 4s/0s

That is, the estimated total duration makes plenty of sense, except that after calling finish it drops to 0. I would expect that duration would reflect the real final duration when the progress bar is finished.

I guess the problem is around lines 292–297 of src/state.rs:

pub fn duration(&self) -> Duration {
    if self.len.is_none() || self.is_finished() {
        return Duration::new(0, 0);
    }
    self.started.elapsed() + self.eta()
}

It seems to be explicitly returning 0 when is_finished(). Is this intentional?