Ability to treat content of comments as Markdown (e.g. in C++)

[MikeWeller]

If I have Markdown in a Doxygen comment in C++:

/// * some list item

This will get wrapped using the standard text wrapping, i.e. wrapped text is not aligned with the starting character:

/// * some list
/// item

Whereas in Markdown files it is wrapped as:

* some list
  item

(lines are aligned after the * / with the first character of the initial line)

(and presumably this applies to all Markdown-specific behaviour)

I would like some way to treat the content of comments for a given language (or directory/project/workspace?) as Markdown.