atexit_registered  121 src/simh/linehistory.c static int atexit_registered = 0;   /* Register atexit just 1 time.             */
atexit_registered  243 src/simh/linehistory.c   if (!atexit_registered)
atexit_registered  246 src/simh/linehistory.c     atexit_registered = 1;