5088 it's probably ok for vi to stop working around pdp-11 bugs now

*** 26,37 ****
  /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  /*        All Rights Reserved   */
  
  /* Copyright (c) 1981 Regents of the University of California */
  
- #pragma ident   "%Z%%M% %I%     %E% SMI"
- 
  #include "ex.h"
  #include "ex_argv.h"
  #include "ex_temp.h"
  #include "ex_tty.h"
  #include <stdlib.h>
--- 26,35 ----
*** 239,250 ****
                  signal(SIGHUP, onhup);
          oldquit = signal(SIGQUIT, SIG_IGN);
          ruptible = signal(SIGINT, SIG_IGN) == SIG_DFL;
          if (signal(SIGTERM, SIG_IGN) == SIG_DFL)
                  signal(SIGTERM, onhup);
-         if (signal(SIGEMT, SIG_IGN) == SIG_DFL)
-                 signal(SIGEMT, onemt);
          signal(SIGILL, oncore);
          signal(SIGTRAP, oncore);
          signal(SIGIOT, oncore);
          signal(SIGFPE, oncore);
          signal(SIGBUS, oncore);
--- 237,246 ----