Last night over dinner I had a discussion with Miyagawa about what Devel::Cover could steal from Ruby. He mentioned a Ruby backend which uses Vim signs to show coverage information.
So today I shamelessly stole it and produced a basic version for Devel::Cover.
Devel::Cover has more coverage criteria, so extra work will be required to provide this information, but the report seems useful for now. To use it run
$ cover -report vim
and then in vim:
I'd be happy to…