allow event bubbling

src/prelude.rs

@@ -112,17 +112,17 @@ pub use crate::{key, keymap};
 
 pub fn handle_keymap <T> (
     commands: &[KeyBinding<T>], state: &mut T, event: &AppEvent
-) -> Result<(), Box<dyn Error>> {
+) -> Result<bool, Box<dyn Error>> {
     match event {
         AppEvent::Input(Event::Key(event)) => {
             for (code, modifiers, _, _, command) in commands.iter() {
                 if *code == event.code && modifiers.bits() == event.modifiers.bits() {
                     command(state);
-                    break
+                    return Ok(true)
                 }
             }
         },
         _ => {}
     };
-    Ok(())
+    Ok(false)
 }