How to have custom tags like code blocks in CMS rich text editor?

any one using Plasmic CMS for blog posts with a rich-text field for the body? I’m looking for a way to have custom tags such as <code>....</code> <cta>....</cta> to be render inline with the post content.
Wondering if someone has a similar case and how you solved it! Thanks!

(Responding on public thread for visibility)

We’ve today shipped an updated rich text editor supporting many more formatting operations including code block