My general question is how can I know if an old mod is overriding something that is new and important (potentially even presenting security risks)? Is there a way to go back to a version when the mod was written so you can compare the files and make sure you are using JUST the code the mode puts in?


For this example I will use the mod "Swap Images Mouseover". It works great, yet there are three pages it overrides;
/includes/modules/additional_images.php
/includes/modules/main_product_image.php
/includes/templates/template_default/templates/tpl_modules_main_product_image.php

/includes/modules/main_product_image.php was easy to update as there were only two changes it was easy to see what was what.

/includes/templates/template_default/templates/tpl_modules_main_product_image.php no change needed as there was not change in the file in all that time.

but…
in /includes/modules/additional_images.php there have been so many changes and I can't decipher which are Zen Cart changes and which are changes due to the mod.

Is there a way to download additional_images.php with this info?
@version $Id: additional_images.php 6132 2007-04-08 06:58:40Z drbyte $

Is there a repository for old Zen Cart versions so people can compare older files and what older mods may have altered?