How to mess up your tty: (sleep 3;vi)&;vi\n<wait 5 seconds>ZZfg\n

[Guy Harris]

>This problem appears to be buried somewhere in curses.

Actually, "vi" doesn't use "curses", it just uses "termcap" or
"terminfo", so it's buried somewhere in "vi".  "curses" may well have
the same bug, in which case there are at least two places that need
fixing (and one more, if SVR4's "curses" does job control).