the function field of the struct cmd_list_element is 0). */
struct cmd_list_element *
-lookup_cmd (const char **line, struct cmd_list_element *list, char *cmdtype,
+lookup_cmd (const char **line, struct cmd_list_element *list,
+ const char *cmdtype,
int allow_unknown, int ignore_help_classes)
{
struct cmd_list_element *last_list = 0;