bug#61066: [PATCH] Add inlay hint support to eglot

[Dmitry Gutov]

On 26/01/2023 08:29, Eli Zaretskii wrote:
> AFAIU, inlay hints provide information of the same kind as ElDoc and
> in similar manner from the display and UX POV.  So I think this
> feature should work via ElDoc, not as a separate from-the-scratch
> implementation.

IIUC the "inlay hints" are about different information.

Information that is not determined by the position of point.

For example, annotating variable declarations with specific types in a 
language that infers types, here's a screenshot: 
https://user-images.githubusercontent.com/2771466/71774757-54269200-2fc8-11ea-8505-ac2f326761ca.png

Or adding parameter types (or names) inside function calls, example: 
https://user-images.githubusercontent.com/2303841/35807174-43bc0c3c-0a82-11e8-8c99-591fb650e1e0.png

So I don't think this fits Eldoc's protocol.

You were probably thinking of signature help (that was my initial 
impression as well).