IssueTracker

#What is the desired behavior of the feature? (Be specific!)

Consider the following app.yaml  rule:


- url: /app\?_escaped_fragment=
  script: main.app

This won't work, because App Engine only matches the path against the regular expression. I'd like this to work.

#If relevant, what new use cases will this feature will enable?

Let's say your application routes all users to a static file, that does further routing using javascript. This is very useful,  because serving static files is cheaper than hitting a script handler. This file communicates with your ap through, for instance, a cloud endpoints API. 'This works great for users, but isn't very crawler friendly.

We can fix this by implementing the crawlable AjAx specification, documented here:https://developers.google.com/webmasters/ajax-crawling/docs/specification
.
Now if my static file is crawled through the path /app, Googlebot will find the meta tag described in the spec, and make a request to /app?_escaped_fragment_=, but there's currently no way for me to route this request to a script handler instead of a static file handler in app.yaml.

A current workaround is to have a script handler route the request based on the presence of the _escaped_fragment_ query parameter, but the goal of having a static file, is requests not hitting the app server at all.