Vscode-r: [Feature request] Support highlighting for yaml front matter of Rmarkdown document

[psychelzh]

.Rmd is now well highlighted in the main document, but there is no support for highlighting for yaml front matter. Will it be supported in the future?

[Ikuyadeu]

@psychelzh Thank you for using and issue.
Looks little difficult, but actually it should be supported by this extension.
I put this as want help

[psychelzh]

Thanks. And I also filed an issue (Microsoft/vscode#49604) in vscode. Hopefully it will be solved there?

[Ikuyadeu]

Yes, I think so.

[andycraig]

It might be possible to handle this as an Embedded Language: https://code.visualstudio.com/api/language-extensions/syntax-highlight-guide#embedded-languages

[psychelzh]

But I do believe this is supported in newer versions of vscode. See the following screenshots.

[andycraig]

@psychelzh Thank you for pointing this out! I hadn't realised this was supported at all. I checked just now and found that on Linux it is indeed highlighted, but on Windows there is no highlighting even with VSCode 1.40.

[andycraig]

Check of the highlighting info on Windows:

---
title: "highlighting test"
author: "me"
---

**Text!**

# Hello

[andycraig]

Linux:

Windows and Linux are showing the front matter as different languages. Not sure why this would be.

[psychelzh]

@andycraig Interestingly, I am using Windows 10 now, which is normal.😱

[andycraig]

@psychelzh Oh! In that case it is almost certainly something specific to my system. I’ll try reinstalling VSCode etc. Thank you for letting me know!

[andycraig]

It's confirmed working on both Linux and Windows, and whatever problem I'm having on Windows is probably related to VSCode rather than vscode-R, so let's close this.