It may not solve all the problems you mentioned, but:

$ perl -MData::Dump=pp -le '$ref = []; print pp eval pp [$ref, $ref];'
do {
  my $a = [[], 'fix'];
  $a->[1] = $a->[0];
  $a;
}

[download]

In reply to Re^3: Perl data notation by Anonymous Monk
in thread Perl data notation by rje

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