Run FsAutoComplete Asynchronously

[austincrft]

The auto-complete suggestions for this plugin are noticeably slower than omnisharp-vim's. I imagine the biggest factor in this is how the vim-omnisharp plugin leverages vim-dispatch to run the OmniSharp asynchronously.

Do you think this is a desirable feature to implement?

I see there has been a bit of vim-dispatch discussion on issue #13.

[nosami]

omnisharp-vim author here :) OmniSharp only uses vim-dispatch to launch the server and it can also be used for running tests and builds, but it's not used for normal editor operations.

If you use YouCompleteMe with OmniSharp, then completions can be async, but everything else is synchronous.

[kjnilsson]

I think the difference here is that the completion server is faster and there won't be much we can do about it until FCS gets faster itself. I'm hoping we can do some exciting things with the async support in vim 8 though. :)

[nosami]

@kjnilsson : I haven't tried vim-fsharp in ages. Did you ever implement the parse improvements that we talked about?

[nosami]

Oh, I remember now. You need background parsing for that to work.

[kjnilsson]

@nosami no I just worked around that for now. Given there is no automatic autocompletion (unless you use a plugin) the speed has never bothered me much as I only complete when I need/want.

[kjnilsson]

naturally all things may be possible with vim 8 but I feel that may effectively me a re-write

[austincrft]

I see what you mean. I use neocomplete, which offers suggestions as I type. It makes the entire editing experience slow, but I suppose I could use only manual completions.

[kjnilsson]

Manual completions is all it's been tested for really. I only rarely use them myself. The checker is much more important to me. I will close this for now unless there is something concrete we can address here. (Re-open if so) Making it all async in vim 8 is a whole different project?