occasionally the clipboard is set to a display number

[dnut]

This happens during the necessary stage of identifying new clipboards. To do this, it sets values to the clipboard and then retrieves the value from the same or other clipboards. It's hard to completely avoid this but ideally it can be reduced somehow.

there's already this to reset it back to the value from before checking

    for c in clipboards.iter() {
        c.set(&start)?;
    }

but occasionally i hit the clipboard in the middle of the search and get a display number anyway. this would restore it sooner but i don't know how much better it would be. need to weigh this against the fact that it's reading and writing to all the clipboards ~twice as many times

fn are_same(one: &Box<dyn Clipboard>, two: &Box<dyn Clipboard>) -> MyResult<bool> {
    let one_orig = one.get()?;
    let two_orig = two.get()?;
    let d1 = &one.display();
    let d2 = &two.display();
    one.set(d1)?;
    if d1 != &two.get()? {
        one.set(&one_orig)?;
        return Ok(false);
    }
    two.set(d2)?;
    if d2 != &one.get()? {
        one.set(&one_orig)?;
        two.set(&two_orig)?;
        return Ok(false);
    }
    one.set(&one_orig)?;

    Ok(true)
}

[dnut]

this isn't a big deal because it's set back to the prior state pretty quickly