public static boolean let_command(PsiBuilder b, int l) {
    if (!recursion_guard_(b, l, "let_command")) return false;
    if (!nextTokenIs(b, LET)) return false;
    boolean r, p;
    Marker m = enter_section_(b, l, _NONE_, LET_COMMAND, null);
    r = consumeToken(b, LET);
    p = r; // pin = 1
    r = r && expression(b, l + 1, -1);
    exit_section_(b, l, m, r, p, null);
    return r || p;
  }
public static boolean let_command(PsiBuilder b, int l)