Accented letters don't work as shortcut
Python3 curses is a bit of a pain: getkey() provides string, including nice KEY_LEFT for exemple, but é for é. getch() provides unicode code for one character strings, and provides two values for é. get_wch() provides mostly strings, but unicode codes for function and arrow keys.
For now, the first solution is used, and disables accented letters for shortcut configuration, and that's sad.