static boolean redirection_target(PsiBuilder b, int l) {
    if (!recursion_guard_(b, l, "redirection_target")) return false;
    boolean r;
    Marker m = enter_section_(b, l, _NONE_, null, "<redirection target>");
    r = process_substitution(b, l + 1);
    if (!r) r = parseUntilSpace(b, l + 1, ShParser::w);
    exit_section_(b, l, m, r, false, null);
    return r;
  }
static boolean redirection_target(PsiBuilder b, int l)