Slow (and weak) AutoCompletion

[Georg97]

Issue

Compared to my NeoVim config with lsp-zero and cmp, the helix AutoCompletion just seems to lack a lot to be a serious competitor.

My problems are:

• needs about 0.5 - 1 second unit autocomplete suggestions are shown (Maybe I can configure this somehow)
• For some specific languages the AutoCompletion just does not show every possibilty (e.g. java with jdtls and scss with vscode-language-server)

My Setup

I installed vscode-language-server through npm and jdtls by extracting to ~/.local/bin/jdtls-files and creating a symlink ~/.local/bin/jdtls -> ./jdtls-files/bin/jdtls.

hx --health has following output for java:

posting my whole NeoVim config would be a bit too much I guess. It can be found here

Screenshots

auto complete with neovim

autocomplete with helix. It shows less results and addClassNames ist not even existent

misc

The main issue is the missing completion. I can live with the slower results, but would nice to address them somehow.

I have similar problems with css/scss files, but I think this one example shoud be enough for now. Maybe when I find a solution for this, the other one will also vanish.

When coding typescript I don't have this issue. It's just slow, but shows all possibilites for code completion

I don't know if this is a bug or might be feature request. I guess there is also a high chance, that I have just configured jdtls wrong. I just can't find any practical examples on how to configure helix for java development. Any help would be much appreciated!

[clo4]

Not sure about the second issue, but for the first one, add this to your helix config (use :config-open)

[editor]
idle-timeout = 0
completion-trigger-len = 1

[Georg97]

Great, thanks for that one. That was what I was hoping for.

[kirawi]

Helix shows all the auto-completion results the LSP sends, so there isn't anything that can be done client-side about it.

[Georg97]

Yes I do understand that, technically... But how does neovim do that then? I'm just curious

[pascalkuthe]

It seems like you might still be using an older helix version (22.12 instead of 22.3) which didn't include snippet support. Many LSPs will just send less completions when the client disables snippets

[Georg97]

hx --version says I run version 23.03. And the missing auto completions are not snippets, they are missing member functions and properties

[clo4]

Is it possible that your LS is (maybe incorrectly, maybe not) not seeing a capability being reported, and as a result sending fewer completions? I don't know anything about your LS or what capabilities Helix reports, so that's a total shot in the dark from me