Based on your Data::Dumper output it is clear that you still have newlines at the end of your hash keys. Are you sure you are doing: 
  chomp;
  $hashlist{$_} = 1;

[download]
or do you have something else?

In reply to Re^3: Attempting to fill a hash by pc88mxer
in thread Attempting to fill a hash by TwistedTransistor

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