Submitted by salimiles
Currently there is some input that is context sensitive (same key, different action) such as the arrow keys, space key, enter, etc.

However the current way of doing this is less than optimal, and should be updated. It (maybe?) is what is holding back gamepad support? A written proposal for how to do this in the comment section of http://rb.freedroid.org/r/908/ (although, as of writing, there has been no response).

Basically all input should be handled by single set of input functions with a single place for SDL polling.