padrino/padrino-framework — pull request #1466 by namusyaka (2013-10-17 14:10:55+00:00)
Title: Change request.accepts to an empty array if request.accepts is `*/*`.

ref #1465
I guess [this changes](https://github.com/sinatra/sinatra/commit/4762e4a92bab58d1973c5b3500a3db2e01149e38) is the cause of the problem.
This PR is a simple way of solving.