---- a/editors/vi.c
-+++ b/editors/vi.c
-@@ -147,10 +147,10 @@
- #endif
-
- smallint editing; // >0 while we are editing a file
-- // [code audit says "can be 0 or 1 only"]
-+ // [code audit says "can be 0, 1 or 2 only"]
- smallint cmd_mode; // 0=command 1=insert 2=replace
- int file_modified; // buffer contents changed (counter, not flag!)
-- int last_file_modified; // = -1;
-+ int last_file_modified; // = -1;
- int fn_start; // index of first cmd line file name
- int save_argc; // how many file names on cmd line
- int cmdcnt; // repetition count
-@@ -623,7 +623,7 @@
- // These are commands that change text[].
- // Remember the input for the "." command
- if (!adding2q && ioq_start == NULL
-- && strchr(modifying_cmds, c)
-+ && c != '\0' && strchr(modifying_cmds, c)
- ) {
- start_new_cmd_q(c);
- }
-@@ -645,8 +645,8 @@
- }
- //-------------------------------------------------------------------
-
-- place_cursor(rows, 0, FALSE); // go to bottom of screen
-- clear_to_eol(); // Erase to end of line
-+ place_cursor(rows - 1, 0, FALSE); // go to bottom of screen
-+ clear_to_eol(); // erase to end of line
- cookmode();
- #undef cur_line
- }
-@@ -2009,9 +2009,9 @@
- {
- // get buffer for new cmd
- // if there is a current cmd count put it in the buffer first
-- if (cmdcnt > 0)
-+ if (cmdcnt > 0) {
- lmc_len = sprintf(last_modifying_cmd, "%d%c", cmdcnt, c);
-- else { // just save char c onto queue
-+ } else { // just save char c onto queue
- last_modifying_cmd[0] = c;
- lmc_len = 1;
- }
-@@ -2247,18 +2247,20 @@
-
- fflush(stdout);
- n = chars_to_parse;
-- // get input from User- are there already input chars in Q?
-+ // get input from User - are there already input chars in Q?
- if (n <= 0) {
- // the Q is empty, wait for a typed char
-+ again:
- n = safe_read(STDIN_FILENO, readbuffer, sizeof(readbuffer));
-- if (n < 0) {
-- if (errno == EBADF || errno == EFAULT || errno == EINVAL
-- || errno == EIO)
-- editing = 0; // want to exit
-- errno = 0;
-- }
-- if (n <= 0)
-- return 0; // error
-+ if (n <= 0) {
-+ place_cursor(rows - 1, 0, FALSE); // go to bottom of screen
-+ clear_to_eol(); // erase to end of line
-+ cookmode(); // terminal to "cooked"
-+ bb_error_msg_and_die("can't read user input");
-+ }
-+ /* elsewhere we can get very confused by NULs */
-+ if (readbuffer[0] == '\0')
-+ goto again;
- if (readbuffer[0] == 27) {
- // This is an ESC char. Is this Esc sequence?
- // Could be bare Esc key. See if there are any
---- a/miscutils/crontab.c
-+++ b/miscutils/crontab.c
-@@ -93,6 +93,7 @@
- char *new_fname;
- char *user_name; /* -u USER */
- int fd;
-+ int src_fd;
- int opt_ler;
-
- /* file [opts] Replace crontab from file
-@@ -144,15 +145,15 @@
- bb_show_usage();
-
- /* Read replacement file under user's UID/GID/group vector */
-+ src_fd = STDIN_FILENO;
- if (!opt_ler) { /* Replace? */
- if (!argv[0])
- bb_show_usage();
- if (NOT_LONE_DASH(argv[0])) {
-- fd = open_as_user(pas, argv[0]);
-- if (fd < 0)
-+ src_fd = open_as_user(pas, argv[0]);
-+ if (src_fd < 0)
- bb_error_msg_and_die("user %s cannot read %s",
- pas->pw_name, argv[0]);
-- xmove_fd(fd, STDIN_FILENO);
- }
- }
-
-@@ -180,23 +181,23 @@
- tmp_fname = xasprintf("%s.%u", crontab_dir, (unsigned)getpid());
- /* No O_EXCL: we don't want to be stuck if earlier crontabs
- * were killed, leaving stale temp file behind */
-- fd = xopen3(tmp_fname, O_RDWR|O_CREAT|O_TRUNC, 0600);
-- xmove_fd(fd, STDIN_FILENO);
-- fchown(STDIN_FILENO, pas->pw_uid, pas->pw_gid);
-+ src_fd = xopen3(tmp_fname, O_RDWR|O_CREAT|O_TRUNC, 0600);
-+ fchown(src_fd, pas->pw_uid, pas->pw_gid);
- fd = open(pas->pw_name, O_RDONLY);
- if (fd >= 0) {
-- bb_copyfd_eof(fd, STDIN_FILENO);
-+ bb_copyfd_eof(fd, src_fd);
- close(fd);
-+ xlseek(src_fd, 0, SEEK_SET);
- }
-+ close_on_exec_on(src_fd); /* don't want editor to see this fd */
- edit_file(pas, tmp_fname);
-- xlseek(STDIN_FILENO, 0, SEEK_SET);
- /* fall through */
-
- case 0: /* Replace (no -l, -e, or -r were given) */
- new_fname = xasprintf("%s.new", pas->pw_name);
- fd = open(new_fname, O_WRONLY|O_CREAT|O_TRUNC|O_APPEND, 0600);
- if (fd >= 0) {
-- bb_copyfd_eof(STDIN_FILENO, fd);
-+ bb_copyfd_eof(src_fd, fd);
- close(fd);
- xrename(new_fname, pas->pw_name);
- } else {
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