private static boolean shell_parameter_expansion_1(PsiBuilder b, int l) {
    if (!recursion_guard_(b, l, "shell_parameter_expansion_1")) return false;
    boolean r;
    Marker m = enter_section_(b);
    r = shell_parameter_expansion_inner(b, l + 1);
    while (r) {
      int c = current_position_(b);
      if (!shell_parameter_expansion_inner(b, l + 1)) break;
      if (!empty_element_parsed_guard_(b, "shell_parameter_expansion_1", c)) break;
    }
    exit_section_(b, m, null, r);
    return r;
  }
private static boolean shell_parameter_expansion_1(PsiBuilder b, int l)