Patch allowing empty commands and comment lines typed without error

[Klaus Reichl]

This patch allow empty lines and comments typed in without crying.

KR
--
Klaus Reichl @ HOME     email: [EMAIL PROTECTED] 

ChangeLog:
        * stage2/cmdline.c (enter_cmdline): Repeat if the user hits an
        empty line or comment line (don't complain about unrecognized
        command in that case). 

Patch:
diff -ru --exclude-from=exclude.grub grub-99-11-06/stage2/cmdline.c 
grub/stage2/cmdline.c
--- grub-99-11-06/stage2/cmdline.c      Fri Oct 29 06:33:02 1999
+++ grub/stage2/cmdline.c       Sun Nov  7 16:30:01 1999
@@ -124,9 +124,15 @@
       print_error ();
       errnum = ERR_NONE;
       
-      /* Get the command-line with the minimal BASH-like interface.  */
-      if (get_cmdline (PACKAGE "> ", heap, 2048, 0, 1))
-       return;
+      /* Get the command-line with the minimal BASH-like interface.  
+        Repeat until we see something on the cmdline.  */
+      do
+       {
+         *heap = 0;
+         if (get_cmdline (PACKAGE "> ", heap, 2048, 0, 1))
+           return;
+       }
+      while (heap [0] == '\0' || heap [0] == '#');
 
       /* Find a builtin.  */
       builtin = find_command (heap);