Simplify handling terminal events for unbuffered stdin

Author: mo8it

src/watch.rs

@@ -95,7 +95,6 @@ fn run_watch(
                 break;
             }
             WatchEvent::Input(InputEvent::Run) => watch_state.run_current_exercise(&mut stdout)?,
-            WatchEvent::Input(InputEvent::Unrecognized) => watch_state.render(&mut stdout)?,
             WatchEvent::FileChange { exercise_ind } => {
                 watch_state.handle_file_change(exercise_ind, &mut stdout)?;
             }

src/watch/terminal_event.rs

@@ -9,13 +9,9 @@ pub enum InputEvent {
     Hint,
     List,
     Quit,
-    Unrecognized,
 }
 
 pub fn terminal_event_handler(tx: Sender<WatchEvent>, manual_run: bool) {
-    // Only send `Unrecognized` on ENTER if the last input wasn't valid.
-    let mut last_input_valid = false;
-
     let last_input_event = loop {
         let terminal_event = match event::read() {
             Ok(v) => v,
@@ -34,39 +30,13 @@ pub fn terminal_event_handler(tx: Sender<WatchEvent>, manual_run: bool) {
                     KeyEventKind::Press => (),
                 }
 
-                if key.modifiers != KeyModifiers::NONE {
-                    last_input_valid = false;
-                    continue;
-                }
-
                 let input_event = match key.code {
-                    KeyCode::Enter => {
-                        if last_input_valid {
-                            continue;
-                        }
-
-                        InputEvent::Unrecognized
-                    }
-                    KeyCode::Char(c) => {
-                        let input_event = match c {
-                            'n' => InputEvent::Next,
-                            'h' => InputEvent::Hint,
-                            'l' => break InputEvent::List,
-                            'q' => break InputEvent::Quit,
-                            'r' if manual_run => InputEvent::Run,
-                            _ => {
-                                last_input_valid = false;
-                                continue;
-                            }
-                        };
-
-                        last_input_valid = true;
-                        input_event
-                    }
-                    _ => {
-                        last_input_valid = false;
-                        continue;
-                    }
+                    KeyCode::Char('n') => InputEvent::Next,
+                    KeyCode::Char('h') => InputEvent::Hint,
+                    KeyCode::Char('l') => break InputEvent::List,
+                    KeyCode::Char('q') => break InputEvent::Quit,
+                    KeyCode::Char('r') if manual_run => InputEvent::Run,
+                    _ => continue,
                 };
 
                 if tx.send(WatchEvent::Input(input_event)).is_err() {