Had to tweak a couple things to make it work in my version of 2.2.2.  I’ve merely taken your elsif alternatives and
inserted them into the two versions of full_messages now in rails.

I have also added the error_massages_for proc into the plugin.  Didn’t make any changes to it, but needed it in the
plugin to make it work.  Not sure why – some scoping issue I don’t want to deal with.