Executing `vscode.executeFormatDocumentProvider` with HTML files can return end range exceeding file length

[allisonchou]

• VS Code Version: 1.76.0-insider
• OS Version: Windows 11

Using the built-in command vscode.executeFormatDocumentProvider (spec'd here) using an HTML URI can return a range that exceeds the length of the source file.

For example, invoking the above command on a completely empty HTML file will return a range of (startPosition: (0, 0); endPosition: (1, 0)) despite there only being one line in the file. This has caused several bugs to be filed on the Razor team. We've implemented a workaround for now, but we hope to have this issue formally fixed in the near future.

[aeschli]

Can you create an extension test that shows that issue? Are there any settings involved?