[Feature Request] Add coc.nvim support

[voldikss]

coc.nvim is a modern completion framework plugin for Vim/NeoVim. It's very fast and easy to use.

Currently I am using snippets with coc to compelte Tex code. Notice that vimtex have support for Deoplete, ncm2, YCM, it will be fantastic if vimtex also support coc.nvim.

How do you think about this?

P.S. this might be helpful: Create custom source

[clason]

Did you see https://github.com/neoclide/coc-vimtex?

[voldikss]

I'm so sorry 😥 for that

[lervag]

No reason to be sorry! I think coc-vimtex should be documented in vimtex as well, which is currently missing.

[clason]

@voldikss Yes, please! I'd be great if you could try it out and maybe even make a PR for the documentation.

[voldikss]

@clason @lervag I just forked vimtex project, the coc.nvim will be documented soon

[voldikss]

Just made a PR for coc.nvim & coc-vimtex introduction.

[lervag]

Thanks, @voldikss! I think #1351 resolves this issue. What do you think, @clason?

[clason]

Looks good! I'm not sure whether the installation instructions should be more explicit (installing CoC is not as simple as Plug 'neoclide/coc.nvim', since you also need to install the binary, which could be tricky depending on how much of the dependencies you've already installed)?

[voldikss]

Hmmmm It does need some pre-requirements... Sorry I forgot it, and it should be introduced in detail.

But notice that it will be much stuff to about CoC's installation, how about just providing the link of CoC's README? https://github.com/neoclide/coc.nvim/blob/master/Readme.md

[clason]

Yes, that should be sufficient: make clear that it's not just Plug and play, and give a link to the installation instructions (although https://github.com/neoclide/coc.nvim/wiki/Install-coc.nvim is probably a better target than a deep link to the source code).

[voldikss]

Yes, I agree.

Since that's is a pretty little modification, a PR might be troublesome. So could please you modify and commit it?

It's midnight here, I am in the bed now :smile:

[lervag]

I think my update should resolve this.

[lervag]

By the way: Do you have any experience with ncm2 and/or deoplete, and if so, how would you compare coc.nvim to these? I've used neocomplete, then ncm2, then deoplete, and for now I'm relatively satisfied with deoplete.

[voldikss]

Thank you @lervag

I've being using Deoplete before CoC, it is quite convenient and out of box. However it seems to be pretty show, so I switched to CoC.

Besides, I haven't used ncm2 and neocomplete, I've used YCM 3 years ago when I came into Vim. But YCM is bulky.

[lervag]

Ok, thanks. I've not really had an issue with deoplete being slow. I looked into CoC yesterday, but it seems very inconvenient to configure.

[voldikss]

It's not that inconvenient actually. I won't persuade you to use coc, but if you did suffered a lot from Deoplete's slow performance you should have a try with coc.

For people who haven't used coc before, it might be convoluted when they first looked at coc. But it has a quite detailed doc as well as it's wiki. Furthermore, only the basic configuration can get coc to work.

Since you are a Vim developer, it will be fine for you to configure it.

Both deoplete and coc are excellent, just pick which are suitable for you.

[voldikss]

Ho! I just hear from vim-cn telegram group that coc is on the github trending today! See https://github.com/trending :astonished:

[voldikss]

Excuse me for a confusion:

I read vim-airline's document today, why not add that documentation in the doc/vimtex.txt? see: https://github.com/vim-airline/vim-airline/blob/master/doc/airline.txt#L1061

[lervag]

I read vim-airline's document today, why not add that documentation in the doc/vimtex.txt? see: https://github.com/vim-airline/vim-airline/blob/master/doc/airline.txt#L1061

I'm not quite sure what you mean. Could you elaborate?

Ho! I just hear from vim-cn telegram group that coc is on the github trending today!

Cool!

It's not that inconvenient actually. I won't persuade you to use coc, but if you did suffered a lot from Deoplete's slow performance you should have a try with coc.

As mentioned, I did not suffer slow performance. But I am always looking for ways to improve my Vim usage, and if there are clear benefits then I am willing to change my ways. :)

Since you are a Vim developer, it will be fine for you to configure it.

Yes, probably. What confuses me the most is that coc.nvim seems to be more than just completion. It seems that I may replace both deoplete and vim-lsp. Thus the change becomes more complicated, since there are quite a few plugins that might become redundant or unnecessary. In any case, thanks for your comments, I may look into testing coc.nvim when I get more time.

[lervag]

Reg. vim-airline: Do you have a suggestion to where in the vimtex docs it should be mentioned? I don't think it makes sense to write much, but I agree it might be good to mention that the plugins work well together.

[voldikss]

I have no idea about this:(. Maybe that makes no sense, it's just a little integration which is hard to insert into the vimtex.txt

[lervag]

Ok, thanks. I think I'll leave it as it is, because the information is already clear at vim-airline's side, where it matters. If you (or anyone else) have a clear idea where and how it could be documented in vimtex, then I'm all ears.

[patnr]

It might be worth documenting as well some map conflicts with coc's, whose README suggests a ton of mappings. For example, nmap K is used by both vimtex and coc to show documentation.

[lervag]

Yes, feel free to suggest something specific :)

[patnr]

You mean a PR? I can do that. But there may be several other conflicts that I'm not aware of yet.

[lervag]

Either a PR or just a concrete suggestion is also fine. I'm not sure if it is worth commenting on all conflicts, though; these may change in time and keeping things updated will be too much work.