title: How can a Jekyll page access its filename?
body: <p>My goal is to create links from any published jekyll page back to its location on Github. </p>
  
  <p>And so, I'd need access to a page's pathname when constructing this url. However, I don't see anything in the api for templates that provides this info. I looked at the source for <em>page</em>, but none of the file/path attributes had values, when accessed via the template.</p>