What is the proper way to maintain a local port file?

[Michael_google gmail_Gersten]

>> What is the proper way to maintain a local port?
>>
>> 2. Modifying an existing port.
>
> 2) keeping local patches
> (2) can be a bit of a pain in the ass, but has the advantage that you'll
> discover when and if the official port breaks your patch.
>
> I've got procedures and scripts to handle both cases that you are
> welcome to get and take a look at :-)

This is what I'm looking for. Where are your scripts? I was hoping to
find a link in there.