Formatter does not respect selection or format on save "modifications"

[vaisest]

The formatter seems to always format the entire file. This is problematic when working with projects where I only want to format what I'm about to commit. The entire file gets formatted when I use the "Format Selection" feature and the extension doesn't seem to respect "editor.formatOnSaveMode": "modifications",.

[CppCXY]

Formatting on save does not exist for LSP; what really exists is range formatting. You can try whether format selection itself works correctly.

[CppCXY]

Through simple testing, I’ve found that range formatting automatically expands the selection. Since the selected range may not have independently formattable text, I prefer to accept this change.