--- textutils-2.0.orig/src/tail.c	Thu Aug  5 16:38:02 1999
+++ textutils-2.0/src/tail.c	Thu Jul  5 13:56:23 2001
@@ -838,6 +838,7 @@
       for (i = 0; i < nfiles; i++)
 	{
 	  struct stat stats;
+	  static time_t st_mtime = 0;
 
 	  if (f[i].fd < 0)
 	    {
@@ -853,6 +854,38 @@
 	      continue;
 	    }
 
+	  /* FIFO patch; since the size of a FIFO doesn't change when it is written
+	   * to, we have to look at something else. I suggest using the st_mtime
+	   * stat entry. Of course, some of the code later in this function deals
+	   * with size changes (thinks that the file has had its size changed)
+	   * which is not true of FIFOs, but it works.
+	   *
+	   * TODO: I'm not 100% sure it works when two consecutive changes are done
+	   * within one second, and there is a fstat() inbetween them. An fstat()
+	   * call after the second change will see that st_mtime hasn't been
+	   * changed since the previous fstat() call (since the two changes were
+	   * done within the same second) and tail will thus not think that there
+	   * are any changes to report. Then, if no further data is written to the
+	   * FIFO in a long time, will that data be discovered by tail?
+	   */
+	  if (S_ISFIFO(stats.st_mode)) {
+		  if (stats.st_mtime > st_mtime) {
+			  st_mtime = stats.st_mtime;
+		  } else {
+			  /* This block copied from the if (stats.st_size == f[i].size)
+			   * block below
+			   */
+			  f[i].n_consecutive_size_changes = 0;
+			  if (++f[i].n_unchanged_stats > max_n_unchanged_stats_between_opens
+					  && follow_mode == Follow_name)
+			  {
+				  recheck (&f[i]);
+				  f[i].n_unchanged_stats = 0;
+			  }
+			  continue;
+		  }
+	  } else
+
 	  if (stats.st_size == f[i].size)
 	    {
 	      f[i].n_consecutive_size_changes = 0;
@@ -887,6 +920,7 @@
 	  /* reset counter */
 	  f[i].n_unchanged_stats = 0;
 
+	  if (! S_ISFIFO(stats.st_mode))
 	  if (stats.st_size < f[i].size)
 	    {
 	      write_header (pretty_name (&f[i]), _("file truncated"));
@@ -903,8 +937,12 @@
 		write_header (pretty_name (&f[i]), NULL);
 	      last = i;
 	    }
+	  if (! S_ISFIFO(stats.st_mode)) {
 	  f[i].size += dump_remainder (pretty_name (&f[i]), f[i].fd,
 				       COPY_TO_EOF);
+	  } else {
+		  dump_remainder (pretty_name (&f[i]), f[i].fd, COPY_TO_EOF);
+	  }
 	}
 
       if (n_live_files (f, nfiles) == 0 && ! reopen_inaccessible_files)