[Neovim] add async support?

[liujoey]

Would you like to add async support for Neovim and vim-dispatch? One example could be found from here

With the async support, it could also improve performance, because user doesn't need to wait for all results to be fetched.

[gabesoft]

That sounds good. I think async support would be a welcome improvement. I'm a bit busy with other projects right now. But, I'll get to this as soon as I have some spare time.

[gabesoft]

I've been playing with the async support for neovim. I have a potential implementation here 00880a6 on the async-search branch. The only thing is that it doesn't seem faster that the sync version. Take a look when you have some time.

[liujoey]

It definitely faster, I tried it on a very large java project (my current working project), and when I search a very common word, your master branch took about 10-15 seconds before it can populate any result. While with the async branch, it shows result within 1 second, and I can start scrolling down while it's adding more results to the buffer. Impressive!

[gabesoft]

Sounds good. Then it's worth integrating this change it into the master branch.

[liujoey]

Thanks for your great work. I will close this issue.