bugfix, when matching multiple paths with `get`, `post`, ...

This problem was introduced with:

https://github.com/rails/rails/commit/d03aa104e069be4e301efa8cefb90a2a785a7bff
routing shorthand syntax works with multiple paths

Closes #9913.

We need to expand the match shorthand syntax for every path.
Merge pull request #9932 from senny/9913_routing_problem

routing bugfixes when matching multiple paths