So Smirk has me installing the PayPal module for osCommerce on behalf of one of our customers. I download the appropriate archive, extract the files, and start reading on how to install this puppy. That's when I read:
To install this module, back up your existing installation to a safe place and then just copy the included catalog/ directory over your existing osCommerce files. This will replace the modified files and add the new files. However, if you have modified your osCommerce installation, you will need to manually compare the new files with your existing ones, and possible manually merge the changes.
Oh bloody hell.
This installation of osCommerce I'm installing into has been in production use for several years now. Of course it has been modified! You can't help but modify it if you want to change the layouts or the verbiage. There have been countless modules added over the course of several years. Heck, I hate touching the thing because it's 88,067 lines of PHP code across 999 source files in 154 directories.
And this module from Paypal? It's 39,765 lines of code across 199 source files in 29 directories.
And Paypal expects me to manually compare the new files with the existing files … heh. Heh. Heh. Heh heh heh. Oh! It is to laugh!