Extended shortcuts like 'ctrl-x x' are unavailable in editor.

Extended shortcuts like 'ctrl-x ctrl-x' or 'ctrl-x alt-x' are available
in editor, but 'ctrl-x x' are not.

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>

src/editor/editkeys.c

@@ -79,7 +79,7 @@ edit_translate_key (WEdit * edit, long x_key, int *cmd, int *ch)
     int c;
 
     /* an ordinary insertable character */
-    if (x_key < 256)
+    if (!edit->extmod && x_key < 256)
     {
 #ifdef HAVE_CHARSET
         if (edit->charpoint >= 4)