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  # But otherwise use 3 digits
  s/($Data_Dumper_low_controls)/'\\'.sprintf('%03o',ord($1))/eg;


    # all but last branch below not supported --BEHAVIOR SUBJECT TO CHANGE--
  my $high = shift || "";
    if ($high eq "iso8859") {   # Doesn't escape the Latin1 printables
      if ($Data_Dumper_IS_ASCII) {
        s/([\200-\240])/'\\'.sprintf('%o',ord($1))/eg;
      }
      elsif ($] ge 5.007_003) {
        my $high_control = utf8::unicode_to_native(0x9F);
        s/$high_control/sprintf('\\%o',ord($1))/eg;
      }
    } elsif ($high eq "utf8") {
#     Some discussion of what to do here is in
#       https://rt.perl.org/Ticket/Display.html?id=113088
#     use utf8;
#     $str =~ s/([^\040-\176])/sprintf "\\x{%04x}", ord($1)/ge;
    } elsif ($high eq "8bit") {
        # leave it as it is