Unable to specify document selectors for formatting requests during the initial initialization

[rcjsuen]

language-server-protocol/_specifications/lsp/3.18/general/initialize.md

Lines 791 to 794 in 7755eb1

	/**
	* The server provides document formatting.
	*/
	documentFormattingProvider?: boolean | DocumentFormattingOptions;

language-server-protocol/_specifications/lsp/3.18/general/initialize.md

Lines 826 to 832 in 7755eb1

	/**
	* The server provides selection range support.
	*
	* @since 3.15.0
	*/
	selectionRangeProvider?: boolean | SelectionRangeOptions
	| SelectionRangeRegistrationOptions;

For ServerCapabilities I can include SelectionRangeRegistrationOptions in the original response to the initialize request but I cannot include DocumentFormattingRegistrationOptions because only DocumentFormattingOptions is allowed.

Would it make sense to update ServerCapabilities so that it supports declaring registration options for textDocument/formatting and other such features?

[dbaeumer]

The reason here is backwards compatibility. If we do that it must go behind a client capability since it might be unexpected for older clients. I never did this since you can achieve the same with dynamic registration.

I actually opt to leave it as is.

[rcjsuen]

The reason here is backwards compatibility.

Yeah, I figured as much. It is what it is. I'm okay with closing this.