fix typos in setkey_func.

ChangeLog

@@ -1,3 +1,12 @@
+2001-01-15  OKUJI Yoshinori  <okuji@gnu.org>
+
+	From Thierry Laronde <thierry.laronde@polynum.com>:
+	* docs/user-ref.texi (Command-line and menu commands): Update
+	the description about setkey.
+	* stage2/builtins.c (setkey_func): When checking if TO_KEY and
+	FROM_KEY are specified, see *TO_KEY and *FROM_KEY instead of
+	TO_KEY and FROM_KEY, respectively.
+	
 2001-01-13  OKUJI Yoshinori  <okuji@gnu.org>
 
 	From Thierry Laronde <thierry.laronde@polynum.com>:

docs/user-ref.texi

@@ -736,11 +736,11 @@ The serial port is not used as a communication channel unless the
 This command is only available if GRUB is compiled with serial support.
 @end deffn
 
-@deffn Command setkey to_key from_key
+@deffn Command setkey [to_key from_key]
 Change the keyboard map. The key @var{from_key} is mapped to the key
-@var{to_key}. Note that this command @emph{does not} exchange the
+@var{to_key}. If no argument is specified, reset key mappings. Note that 
-keys. If you want to exchange the keys, run this command again with the
+this command @emph{does not} exchange the keys. If you want to exchange 
-arguments exchanged, like this:
+the keys, run this command again with the arguments exchanged, like this:
 
 @example
 grub> @kbd{setkey capslock control}

stage2/builtins.c

@@ -3394,7 +3394,7 @@ setkey_func (char *arg, int flags)
   to_key = arg;
   from_key = skip_to (0, to_key);
 
-  if (! to_key)
+  if (! *to_key)
     {
       /* If the user specifies no argument, reset the key mappings.  */
       grub_memset (bios_key_map, 0, KEY_MAP_SIZE * sizeof (unsigned short));
@@ -3402,7 +3402,7 @@ setkey_func (char *arg, int flags)
 
       return 0;
     }
-  else if (! from_key)
+  else if (! *from_key)
     {
       /* The user must specify two arguments or zero argument.  */
       errnum = ERR_BAD_ARGUMENT;