Adding Byline Authors as Author fields in RSS feeds

A good source for figuring this one out: https://digwp.com/2012/10/customizing-wordpress-feeds/

CoAuthors Plus uses a filter and action to put multiple Guest Authors into feeds. It handles the RSS2 feed pretty much like this example in the Codex: https://codex.www.ads-software.com/Plugin_API/Action_Reference/rss2_item#Example_Usage

I’m not sure if CoAuthors covers all feed types, since there are so many.

I’ve got a working patch I sent your way for testing. I have a new version of the plugin running at https://mattdulin.com/tdcx

Scratch that link. Had to create a new demo site.

https://dev.mattdulin.com/byline1/

Looks like it all checks out, but it’s technically not valid XML with all the authors packed into one tag. How will services like Feedburner react to that is the practical question I guess.