Or even: 
foreach my $suffic( 
  sort {
     length($b) <=> length($a)
     or
     $a cmp $b
  } keys %sufdata)

[download]
to sort both on length and alphanumeric

In reply to Re:{2} Getting impossible things right (behaviour of keys) by jeroenes
in thread Getting impossible things right (behaviour of keys) by PetaMem

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