My bad. Apparently, you're correct. It seems that relevant code is a part of VS Code codebase. Perhaps, this is it (though, I very well might be wrong on this,

My bad. Apparently, you're correct. It seems that relevant code is a part of VS Code codebase. Perhaps, this is it (though, I very well might be wrong on this, too): https://github.com/microsoft/vscode/tree/master/src/vs/workbench/services/remote https://github.com/microsoft/vscode/tree/master/src/vs/workb....