message: Stop emitting private use characters on macOS
diff: @@ -286,7 +286,9 @@ pub trait Application: Sized {
  ));
  }
  },
  - WindowEvent::ReceivedCharacter(c) => {
  + WindowEvent::ReceivedCharacter(c)
  + if !is_private_use_character(c) =>
  + {
  events.push(Event::Keyboard(
  keyboard::Event::CharacterReceived(c),
  ));
  @@ -379,3 +381,14 @@ fn spawn<Message: Send>(
  thread_pool.spawn_ok(future);
  }
  }
  +
  +// As defined in: http://www.unicode.org/faq/private_use.html
  +// TODO: Remove once https://github.com/rust-windowing/winit/pull/1254 lands
  +fn is_private_use_character(c: char) -> bool {
  + match c {
  + '\u{E000}'..='\u{F8FF}'
  + | '\u{F0000}'..='\u{FFFFD}'
  + | '\u{100000}'..='\u{10FFFD}' => true,
  + _ => false,
  + }
  +}
  