bug#61506: 30.0.50; [PATCH]: Send command in eglot completion exit-function

[Felician Nemeth]

Hi Theo,

> The LSP spec supports an optional command in the completion results, so
> that the server can know what completion candidate was selected.  That
> information can then be used by the server to score candidates for
> better completion results etc.

Can you list some servers that send this info?  And if it is not too
much trouble can write a simple recipe where supporting this feature
actually makes a difference?  Thanks.

> This simple patch adds support for this.
> I have no strong opinions on _where_ exactly the command should be sent,
> as in before or after the didchange notification.

The specification only says: "An optional command that is executed
*after* inserting this completion."  I think it is worth asking for
clarification at https://github.com/microsoft/language-server-protocol
(I'd guess it's safer to send the command after the didChange
notification.)