I thought for a while that TextMate bundles[1] were that, especially since JetBrains[2], Linguist[3] and VSCode[4] honor them. However, in the spirit of "the good thing about standards ..." highlight.js does[5] almost the same thing that Pragtical does which makes me feel even worse
I had high hopes for Tree-Sitter since it seems to have really won mindshare, but the idea of having an executable grammar spec[6] is ... well, no wonder it hasn't caught on outside of that specific ecosystem
1: https://github.com/rspec/rspec.tmbundle/blob/1.1.12/Syntaxes...
2: https://github.com/JetBrains/intellij-community/blob/idea/24...
3: https://github.com/github-linguist/linguist/blob/v7.30.0/lib...
4: https://github.com/microsoft/vscode-textmate
5: https://github.com/highlightjs/highlight.js/blob/11.10.0/src...
6: https://github.com/tree-sitter/tree-sitter/blob/v0.22.6/test...