If this gets implemented, I noticed a problem in Ghost on two fronts here:
- The Markdown-to-HTML mechanism in Ghost puts square brackets around the superscript numbers. This is IEEE Style [1]. This is Chicago Style.² The superscript square brackets are only a quirk of Wikipedia—not Markdown and not how 99.9% of how most books and journal articles are published.
- The superscript and subscript on most websites, including all of those made with Ghost, will mess up the leading (spacing between lines) with the superscript and subscript HTML tags (instead of the “pre-composed” Unicode character for ² in my earlier example). They should look the same as each other. Neither should affect line spacing. I wrote it about here on the forum under Bugs.