Hello,

Thank you for your inquiry.

1)
The built-in formatter is based on clang and as such supports all options available there. Previously most of these were listed each, but to support all current and future commands this was changed to the single "Formatting Options" setting. As written in the description, all available clang formatting commands may be used: clang.llvm.org/docs/ClangFormatStyleOptions.html

The "Formatting Style" setting allows an easier selection to the predefined styles, e.g. Chromium, and also defines some custom styles.

2)
Based on the screenshots there are currently uncommitted changes in the V8.10d session, while V8.12 is in sync with the repository.
This is the intended behavior, as the file may not be removed while there are pending changes, and there is of course nothing to compare/revert to without modifications.

Best regards,
SebastianB