@Ikuyadeu, thanks for your PR! By analyzing the history of the files in this pull request, we identified @egamma to be a potential reviewer.

@Ikuyadeu How did you convert it? Manually, or is there a script? We can add that to our 'update-grammar' script

@aeschli First convert by script sublime-syntax(as yaml) to json, but some values(ex:push) are Manually. So script is not complete yet. I'll submit this script if completed.

@aeschli Thank you for your review, I fixed.

Did you had a chance to look at a script?

@aeschli I just used this script

var inputfile = 'R.sublime-syntax',
outputfile = 'r.json',
yaml = require('yamljs'),
fs = require('fs'),
obj = yaml.load(inputfile);

fs.writeFileSync(outputfile, JSON.stringify(obj, null, 2));

And fixed manually.

I think better way is importing converted json from here by update-grammar.
It need just change r/package.json script url.

Thanks for the pointers.
I'm curious how the sublime syntax to TextMate conversion works. I was under the impression that the difference is more than just semantics.
We need to do the conversion using a script this as we want to be able to continuously update to the latest grammar

Thank you share your think, actually copy sublime syntax is difficult.
But https://github.com/textmate/r.tmbundle/blob/master/Syntaxes/R.plist is not updated in 5 years.
How is change https://github.com/Microsoft/vscode/blob/master/extensions/r/package.json#L7
to

"update-grammar": "node ../../build/npm/update-grammar.js textmate/vscode-r syntax/r.json ./syntaxes/r.tmLanguage.json"

or

"update-grammar": "node ../../build/npm/update-grammar.js lee-dohm/language-r grammars/r.cson ./syntaxes/r.tmLanguage.json"

I'm happy to switch to a better grammar. Important for us would be that

• it is maintained
• has an OS licence statement, preferably MIT

https://github.com/lee-dohm/language-r also is no longer maintained. But if it's the best option out there, I can switch to it.

Or are you are interested in hosting and maintaining the grammar? If so, set up a repo!

@aeschli Yes, I'll maintain my repository until better repository is created(e.g. RTVS team will create official extension).
But I'll update grammar only when https://github.com/randy3k/R-Box is updated or issue/PR is submitted here/mine.

@Ikuyadeu Great. What's the URL of the repo?

@aeschli Here is my repo's syntax file https://github.com/Ikuyadeu/vscode-R/blob/master/syntax/r.json.

Thanks @Ikuyadeu. It would be nice to have a separate repo just for the grammar, to signal that also other products can use it.
But for now it's fine, I'll update to it.

I switched to your repo: 012d7da
Closing the PR, thanks @Ikuyadeu for your work!

@aeschli Thank you.

@aeschli Could you put about 012d7da that improved R grammer to the https://github.com/Microsoft/vscode-docs/blob/vnext/release-notes/v1_17.md#languages?
If you inform to users I can improve the syntax based on the user's issue.

@Ikuyadeu Done. (microsoft/vscode-docs@08a2122)

@aeschli Thank you for your prompt work!