When Magento generates the url of a product, use the url key of the categories that represent the path to the current category and add the url key of the product followed by .html
If we are in the category Chancellery and click on the product Pen, Magento will use the url www.domain.com/chancellery/pen.html
If the product Pen is also visible in Homepage and we click on it, Magento will use the url www.domain.com/pen.html
If we enable the option
System > Configuration > Catalog > Search Engine Optimizations > Use Canonical Link Meta Tag For Products
putting it to "Yes" in the product page will be added the meta tag for the canonical url which in our example will always correspond to www.domain.com/pen.html
Our module allows Magento to use the full url with the path of the category for both products in Homepage than the canonical url for improving the indexing on search engines.
The url generated to display a product passing from one category are not altered.
If the product is assigned to more than one category, it always will use the path to the first category.
The specified versions are tested versions. The module may also work on other versions.
