Don't divide by zero (empty files)

While there, also increase buf[]

OK claudio@

diff --git a/usr.bin/vi/vi/vs_refresh.c b/usr.bin/vi/vi/vs_refresh.c
index 91769cf..37d03d8 100644 (file)
--- a/usr.bin/vi/vi/vs_refresh.c
+++ b/usr.bin/vi/vi/vs_refresh.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: vs_refresh.c,v 1.24 2024/04/24 15:15:40 job Exp $     */
+/*     $OpenBSD: vs_refresh.c,v 1.25 2024/04/25 09:58:17 job Exp $     */
 
 /*-
  * Copyright (c) 1992, 1993, 1994
@@ -781,7 +781,7 @@ vs_modeline(SCR *sp)
        size_t cols, curcol, curlen, endpoint, len, midpoint;
        const char *t = NULL;
        int ellipsis;
-       char *p, buf[20];
+       char *p, buf[30];
        recno_t last;
 
        /*
@@ -859,7 +859,7 @@ vs_modeline(SCR *sp)
        if (O_ISSET(sp, O_RULER)) {
                vs_column(sp, &curcol);
 
-               if (db_last(sp, &last))
+               if (db_last(sp, &last) || last == 0)
                        len = snprintf(buf, sizeof(buf), "%lu,%zu",
                            (ulong)sp->lno, curcol + 1);
                else