// Hello world!

    event::WindowEvent,

    event::{Modifiers, WindowEvent},

    keyboard::{Key, ModifiersState, NamedKey},

    modifiers: Modifiers,

            modifiers: Modifiers::default(),

    }
}
fn add_modifiers(key_name: &str, state: ModifiersState) -> String {
    let mut res = String::new();
    res.push('<');
    if state.control_key() {
        res.push_str("c-");
    }
    if state.shift_key() {
        res.push_str("s-");
    }
    if state.alt_key() {
        res.push_str("a-")

    res.push_str(&key_name);
    res.push('>');
    res

fn make_kakoune_key(key: Key, state: ModifiersState) -> Option<String> {
    match key {
        Key::Named(NamedKey::Space) => Some(add_modifiers("space", state)),
        Key::Named(NamedKey::Enter) => Some(add_modifiers("ret", state)),
        Key::Named(NamedKey::Tab) => Some(add_modifiers("tab", state)),
        Key::Named(NamedKey::Backspace) => Some(add_modifiers("backspace", state)),
        Key::Named(NamedKey::Delete) => Some(add_modifiers("del", state)),
        Key::Named(NamedKey::Escape) => Some(add_modifiers("esc", state)),
        Key::Named(NamedKey::ArrowUp) => Some(add_modifiers("up", state)),
        Key::Named(NamedKey::ArrowDown) => Some(add_modifiers("down", state)),
        Key::Named(NamedKey::ArrowLeft) => Some(add_modifiers("left", state)),
        Key::Named(NamedKey::ArrowRight) => Some(add_modifiers("right", state)),

        Key::Named(NamedKey::PageUp) => Some(add_modifiers("pageup", state)),
        Key::Named(NamedKey::PageDown) => Some(add_modifiers("pagedown", state)),
        Key::Named(NamedKey::Home) => Some(add_modifiers("home", state)),
        Key::Named(NamedKey::End) => Some(add_modifiers("end", state)),
        Key::Named(NamedKey::Insert) => Some(add_modifiers("ins", state)),
        Key::Named(NamedKey::F1) => Some(add_modifiers("F1", state)),
        Key::Named(NamedKey::F2) => Some(add_modifiers("F2", state)),
        Key::Named(NamedKey::F3) => Some(add_modifiers("F3", state)),
        Key::Named(NamedKey::F4) => Some(add_modifiers("F4", state)),
        Key::Named(NamedKey::F5) => Some(add_modifiers("F5", state)),
        Key::Named(NamedKey::F6) => Some(add_modifiers("F6", state)),
        Key::Named(NamedKey::F7) => Some(add_modifiers("F7", state)),
        Key::Named(NamedKey::F8) => Some(add_modifiers("F8", state)),
        Key::Named(NamedKey::F9) => Some(add_modifiers("F9", state)),
        Key::Named(NamedKey::F10) => Some(add_modifiers("F10", state)),
        Key::Named(NamedKey::F11) => Some(add_modifiers("F11", state)),
        Key::Named(NamedKey::F12) => Some(add_modifiers("F12", state)),
        Key::Character(c) if c == "+" => Some(add_modifiers("plus", state)),
        Key::Character(c) if c == "-" => Some(add_modifiers("minus", state)),
        Key::Character(c) if c == "<" => Some(add_modifiers("lt", state)),
        Key::Character(c) if c == ">" => Some(add_modifiers("lt", state)),
        Key::Character(c) if state == ModifiersState::empty() || state == ModifiersState::SHIFT => {
            Some(c.into())
        }
        Key::Character(c) => Some(add_modifiers(&c, state)),
        _ => None,
    }
}

            WindowEvent::ModifiersChanged(modifiers) => {
                self.modifiers = modifiers;
            }
            WindowEvent::KeyboardInput { event, .. } => {
                if !event.state.is_pressed() {
                    return;
                }
                if let Some(key) = make_kakoune_key(event.logical_key, self.modifiers.state()) {
                    self.kakoune.send_response(Response::Keys(vec![key]));
                }
            }