def keytext_to_keyinfo_and_event (keytext):
keyinfo = KeyPress.from_keydescr(keytext)
if len(keytext) == 3 and keytext[0] == '"' and keytext[2] == '"':
event = Event (keytext[1])
else:
event = Event (keyinfo.to_tuple() [3])
return keyinfo, event
def un_bind_exit_key(key):
keyinfo = KeyPress.from_keydescr(key).tuple()
if keyinfo in modes[mode].exit_dispatch:
del modes[mode].exit_dispatch[keyinfo]