Use URLPattern for routing

[kof]

Can we use the full URLPattern implementation for routing?

In particular missing the regex groups, makes it impossible to use it to create URLs like this: /directory/sitemap(\\d+).xml. A practical example that we recently stumbled upon was creating a number of sitemaps under the same directory path "/directory/" in this case and having each sitemap contain X amount of urls. Splitting those is necessary for performance reasons as these are going into hundreds.

One would argue to make the directory dynamic like this /:directory/sitemap.xml but that would be against Google's SEO policy that requires you to put the sitemap in the same directory as the pages it is referencing.