TK_END
{ "END", TK_END, },
check_match(ls, TK_END, TK_WHILE, line);
check_match(ls, TK_END, TK_FOR, line);
check_match(ls, TK_END, TK_IF, line);
check_match(ls, TK_END, TK_DO, line);
case TK_END: case TK_EOS:
check_match(ls, TK_END, TK_FUNCTION, line);