> - you'd get more bonus points by arranging for the code
>   to (re)use the existing plain text (which is currently produced later
>   when (re)generating the HTML page, so it would take a fair bit of
>   code reorg to get that.  In the mean time, a FIXME comment seems
>   in order).
> - Your code may end up "rendering" a Markdown file for no obvious benefit
>   since the rendering is a no-op (tho I think this is very hypothetical
>   and likely can't happen because of other constraints).

Why should this be?  Both this and the previous iteration of the patch
check (eq (car readme-content) 'text/plain), and currently there is only
text/plain (which includes markdown) and text/org?

> - We might also add a `README-elpa` file when the readme file has a name
>   not recognized by `package--get-description`.