package/busybox/patches/480-vi_search.patch

   1 --- a/editors/vi.c
   2 +++ b/editors/vi.c
   3 @@ -3317,7 +3317,7 @@ static void do_cmd(char c)
   4                 buf[1] = '\0';
   5                 q = get_input_line(buf);        // get input line- use "status line"
   6                 if (q[0] && !q[1]) {
   7 -                       if (last_search_pattern[0])
   8 +                       if (last_search_pattern)
   9                                 last_search_pattern[0] = c;
  10                         goto dc3; // if no pat re-use old pat
  11                 }
  12 @@ -3333,6 +3333,10 @@ static void do_cmd(char c)
  13                 if (cmdcnt-- > 1) {
  14                         do_cmd(c);
  15                 }                               // repeat cnt
  16 +               if (last_search_pattern == 0) {
  17 +                       msg = "No previous regular expression";
  18 +                       goto dc2;
  19 +               }
  20                 dir = BACK;             // assume BACKWARD search
  21                 p = dot - 1;
  22                 if (last_search_pattern[0] == '?') {