--- qbiff.c.orig	Tue Aug  5 01:54:33 1997
+++ qbiff.c	Wed Aug  6 18:07:05 1997
@@ -29,6 +29,7 @@
 
 struct utmp ut;
 char line[sizeof(ut.ut_line) + 1];
+char leastidleline[sizeof(ut.ut_line) + 1];
 stralloc woof = {0};
 stralloc tofrom = {0};
 stralloc text = {0};
@@ -56,6 +57,7 @@
  char *sender;
  char *userext;
  struct stat st;
+ time_t leastidle;
  int i;
 
  if (chdir("/dev") == -1) _exit(0);
@@ -70,6 +72,7 @@
  if (!stralloc_cats(&tofrom,"> FROM <")) _exit(0);
  if (!stralloc_cats(&tofrom,sender)) _exit(0);
  if (!stralloc_cats(&tofrom,">")) _exit(0);
+ if (tofrom.len > 78) tofrom.len = 78;
 
  for (i = 0;i < tofrom.len;++i)
    if ((tofrom.s[i] < 32) || (tofrom.s[i] > 126))
@@ -92,6 +95,7 @@
  if (fdutmp == -1) _exit(0);
  substdio_fdbuf(&ssutmp,read,fdutmp,bufutmp,sizeof(bufutmp));
 
+ leastidle = 0;
  while (substdio_get(&ssutmp,&ut,sizeof(ut)) == sizeof(ut))
    if (!str_diffn(ut.ut_name,user,sizeof(ut.ut_name)))
     {
@@ -105,9 +109,19 @@
      if (fstat(fdtty,&st) == -1) { close(fdtty); continue; }
      if (!(st.st_mode & 0100)) { close(fdtty); continue; }
      if (st.st_uid != getuid()) { close(fdtty); continue; }
-     substdio_fdbuf(&sstty,write,fdtty,buftty,sizeof(buftty));
-     substdio_putflush(&sstty,woof.s,woof.len);
+     if(st.st_atime > leastidle)
+      {
+       leastidle = st.st_atime;
+       byte_copy(leastidleline,sizeof(line),line);
+       line[sizeof(leastidleline)] = 0;
+      }
      close(fdtty);
     }
+ if(leastidle == 0) _exit(0);
+ fdtty = open_append(leastidleline);
+ if (fdtty == -1) _exit(0);
+ substdio_fdbuf(&sstty,write,fdtty,buftty,sizeof(buftty));
+ substdio_putflush(&sstty,woof.s,woof.len);
+ close(fdtty);
  _exit(0);
 }