Method adjust_view

std/src/console/readline.rs:48–58

Adjusts the viewport start to ensure `pos` remains visible.

(&self, pos: usize, view_start: usize)

impl<'a, 'h> Readline<'a, 'h> {
    /// Adjusts the viewport start to ensure `pos` remains visible.
    fn adjust_view(&self, pos: usize, view_start: usize) -> usize {
        if self.input_width == 0 {
            0
        } else if pos < view_start {
            pos
        } else if pos > view_start + self.input_width {
            pos - self.input_width
        } else {
            view_start
        }
    }

    /// Returns the cursor offset within the currently-rendered viewport.
    fn current_pos(&self) -> usize {