Re: Calling eldoc-message directly

[Clément Pit-Claudel]

On 2018-05-09 22:01, Stefan Monnier wrote:
>> In that package, I use a server process to get information about the current
>> buffer.  I can use it to asynchronously retrieve documentation about
>> identifiers, among other things.  This pattern seems pretty common (I think
>> that's how tide, elpy, cider, and multiple other modes work).
>
> Indeed async use is currently not supported.
>
> Not sure how to best add support for sync-processing.
> Ideally, we'd pass a "continuation" to the eldoc-documentation-function,
> but that would break existing functions which wouldn't expect that extra arg.
>
> We could pass that extra arg via a dynamically-scoped variable like
> `eldoc-continuation-function`.
>
> An alternative would be to allow eldoc-documentation-function to return
> a function, which is then called with the continuation.

That would be nice.  This model works pretty well in company-mode.