Why does your plugin remap application/json?

[EgbertW]

I received a bug report for my plugin redmine_planning, EgbertW/redmine_planning#16 which seems to be caused by your plugin. The following line in particular:

Mime::Type.register "application/json", :json_impasse

It seems to remap the JSON request type to a new request type, JSON_IMPASSE, which apparently poses additional constraints. My plugin outputs data using format.json, but this is broken by the line mentioned above.

Can you explain to me why you are remapping the already registered application/json? Thanks.