(use_curses): Initialize to 0 if !HAVE_LIBCURSES

(main): Check for curses use and set terminal to dumb if we don't
       use it (helps for --batch and variants of non-curses setup).

grub/main.c

@@ -35,7 +35,11 @@ int grub_stage2 (void);
 char *program_name = 0;
 int use_config_file = 1;
 int use_preset_menu = 0;
+#ifdef HAVE_LIBCURSES
 int use_curses = 1;
+#else
+int use_curses = 0;
+#endif
 int verbose = 0;
 int read_only = 0;
 int floppy_disks = 1;
@@ -242,6 +246,11 @@ main (int argc, char **argv)
       sleep (1);
     }
 
+  /* If we don't have curses (!HAVE_LIBCURSES or --no-curses or
+     --batch) put terminal to dumb for better handling of line i/o */
+  if (!use_curses)
+    terminal |= TERMINAL_DUMB;
+
   /* Transfer control to the stage2 simulator. */
   exit (grub_stage2 ());
 }