You're very welcome--and not a pain nor more problems! It was actually quite fun to work on and am glad it's working for you.
I think you're correct about the reason why the defined-or-equals (//=) throws an error on your *nix box. I believe that the operator was introduced in v5.10. You can recode each of the //= lines as follows:
This:
$hash{orderID} //= do { /Order ID:(\S+)/; $1 };
Can be written as:
$hash{orderID} = $1 if !defined $hash{orderID} and /Order ID:(\S+)/;
Again, let me know if you have any more questions about this script...
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