[PATCH] fix flickering timeout message for slow terminals (gfxterm)

[Robert Millan <rmh@aybabtu.com>]

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As subject says.  Based on suggestions from Vesa.

-- 
Robert Millan

<GPLv2> I know my rights; I want my phone call!
<DRM> What use is a phone call, if you are unable to speak?
(as seen on /.)

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	* normal/menu.c (run_menu): Move timeout message to a separate
	(local) function, print_timeout().  Use print_timeout() once during
	initial draw to print the whole message, and again in every clock
	tick to update only the number of seconds.

diff -x '*~' -x configure -x config.h.in -urp grub2/normal/menu.c test/normal/menu.c
--- grub2/normal/menu.c	2008-01-05 13:10:28.000000000 +0100
+++ test/normal/menu.c	2008-01-14 14:55:16.000000000 +0100
@@ -314,6 +314,20 @@ run_menu (grub_menu_t menu, int nested)
   int first, offset;
   unsigned long saved_time;
   int default_entry;
+  int timeout;
+
+  auto void print_timeout (int);
+  void print_timeout (int second_stage)
+    {
+      char *prelude = "   The highlighted entry will be booted automatically in";
+
+      grub_gotoxy (second_stage ? grub_strlen (prelude) : 0, GRUB_TERM_HEIGHT - 3);
+      /* NOTE: Do not remove the trailing space characters.
+         They are required to clear the line.  */
+      grub_printf ("%s %ds.    ", second_stage ? "" : prelude, timeout);
+      grub_gotoxy (GRUB_TERM_CURSOR_X, GRUB_TERM_FIRST_ENTRY_Y + offset);
+      grub_refresh ();
+    };
   
   first = 0;
   
@@ -340,11 +354,14 @@ run_menu (grub_menu_t menu, int nested)
   print_entries (menu, first, offset);
   grub_refresh ();
 
+  timeout = get_timeout ();
+
+  if (timeout > 0)
+    print_timeout (0);
+
   while (1)
     {
       int c;
-      int timeout;
-
       timeout = get_timeout ();
       
       if (timeout > 0)
@@ -357,16 +374,8 @@ run_menu (grub_menu_t menu, int nested)
 	      timeout--;
 	      set_timeout (timeout);
 	      saved_time = current_time;
+	      print_timeout (1);
 	    }
-	  
-	  grub_gotoxy (0, GRUB_TERM_HEIGHT - 3);
-	  /* NOTE: Do not remove the trailing space characters.
-	     They are required to clear the line.  */
-	  grub_printf ("\
-   The highlighted entry will be booted automatically in %d s.    ",
-		       timeout);
-	  grub_gotoxy (GRUB_TERM_CURSOR_X, GRUB_TERM_FIRST_ENTRY_Y + offset);
-	  grub_refresh ();
 	}
 
       if (timeout == 0)