The WSGI based URI path parsing specification that used to be referred to as wsgi.url_vars is now specified as wsgiorg.routing_args and has now stabilized, with an implementation in selector. I have now updated wsgicollection to be conformant, but falling back to the old selector.vars if the new style environment variable is not present.

Yes, this stuff is moving rather fast and loose, and I keep feeling the urge to yell "Corner-turn!", yet I believe this stuff is useful, important, and will improve the experience of building web applications under Python, and at this point I'll gladly trade slow and precise for fast and sloppy. The nice part of open source is that if we're wrong the code just doesn't get used.