formatting code samples in markdown files (fsharp blocks) and <code> elements in xml comments?

[smoothdeveloper]

I propose fantomas goes where code formatters rarely go, for code that is most displayed to large audience: code documentation.

• F# codeblocks in markdown files
• code elements (identified as being F#) in xml comments of .net projects
• maybe F# code samples in sandcastle doc

Pros

• consistent formatting in F# code shown in documentation

Cons

• may require third party deps, or work on writing parsers/printers for formats that are alien to fantomas

Extra information

Estimated cost (XS, S, M, L, XL, XXL): M or L

Related suggestions: (put links to related suggestions here)

Affidavit (please submit!)

• [x] I have read the Contribution Guidelines.
• [x] I have searched both open and closed suggestions on this site and believe this is not a duplicate
• [x] This is not a breaking change to Fantomas
• [ ] I or my company would be willing to help implement and/or test this
• [ ] This suggestion is part of the Microsoft style guide (please add a link to section if so)
• [ ] This suggestion is part of the G-Research style guide (please add a link to section if so)

[nojaf]

This seems like something some tool or script could do outside of Fantomas using Fantomas.Core.

Side note, FSharp.Formatting scripts can be formatted because they are just scripts.