Wait only for esc_timeout seconds in unix_console.get_event() and windows_console.get_event()

Author: tanloong

Lib/_pyrepl/unix_console.py

@@ -558,6 +558,12 @@ def get_event(self, block: bool = True) -> Event | None:
             return None
 
         while self.event_queue.empty():
+            if self.event_queue.pending():
+                if not self.wait(timeout=self.event_queue.esc_timeout):
+                    # Timed out waiting for the rest of a sequence: flush the
+                    # pending prefix as a complete key (e.g. a lone ESC).
+                    self.event_queue.flush()
+                    continue
             while True:
                 try:
                     self.push_char(self.__read(1))

Lib/_pyrepl/windows_console.py

@@ -572,6 +572,12 @@ def get_event(self, block: bool = True) -> Event | None:
             return None
 
         while self.event_queue.empty():
+            if self.event_queue.pending():
+                # Timed out waiting for the rest of a sequence: flush the
+                # pending prefix as a complete key (e.g. a lone ESC).
+                if not self.wait_for_event(self.event_queue.esc_timeout * 1000):
+                    self.event_queue.flush()
+                    continue
             rec = self._read_input()
             if rec is None:
                 return None