Why does the commit editor hide the coauthored message? Why not pre-populate the text field and users take or leave it when committing?
Co-Authored-By is normally a trailer, and trailers aren’t part of the commit message. It’s likely the commit editor isn’t set up to show trailers. They’re not exactly obscure, but it does seem that they’re relatively unknown.
I think this is a good point - perhaps there should be some commit-time UI which would let the user make the choice. Thanks for the suggestion!