This seems like it has 2 use cases.
Internal console management around reprinting command prompt, but many
modes of operation delegate the prompt processing to tkcon or readline.
Process termination to restore the termios.
However, this has not been implemented as it has been observed that
the use of itimer() has a restriction of one timer per process, which
interferes with the three or more uses of the timer within magic. The
timer method will have to be changed to use the POSIX timer_create()
routine, before this will work properly.
Darryl L. Miles
Johan Euphrosine
Tim Edwards