Languageclient-neovim: Completion popup not showing up automatically anymore

[schiegl]

The completion menu does not popup automatically in any Language. I tried a simple python file

"".     # <-- popup should show up but doesn't

NeoVim: 0.2.0
Plugin: Last one that's working 2760b3f340dad4b373658d00153511e0adce6b9b

LanguageServer.log - Only Python Language Server seems to throw an error. Others don't

ERROR - pyls.server - Language server exiting due to uncaught exception
Traceback (most recent call last):
  File "/home/user/.local/lib/python3.6/site-packages/pyls/server.py", line 34, in handle
    data = self._read_message()
  File "/home/user/.local/lib/python3.6/site-packages/pyls/server.py", line 91, in _read_message
    raise EOFError()
EOFError

LanguageClient.log - not verbose.

WARNING [MainThread] Unknown parameter key: rootPath
WARNING [MainThread] Unknown parameter key: settingsPath
WARNING [MainThread] register completion manager source failed. Error: NvimError(b'Error calling function.',)

My .vimrc is just from the README. Deoplete + LanguageClient no special settings.

[autozimu]

I couldn't reproduce with the provided information.

Please provide vimrc and reproduction steps.

[schiegl]

I didn't see you had changed the README.

With the new setup the Java LS doesn't work at all. This is the error I get in LanguageServer.log:

Error: Unable to access jarfile ~/.config/nvim/eclipse.jdt.ls/plugins/org.eclipse.equinox.launcher_1.4.0.v20161219-1356.jar

However the python error message in LanguageClient.log disappeared. But the problem is still the same. Completion does not show up automatically.

init.vim

call plug#begin('~/.config/nvim/plugged')

" Language Support
" Plug 'autozimu/LanguageClient-neovim', {'commit': '2760b3f340dad4b373658d00153511e0adce6b9b', 'do': ':UpdateRemotePlugins' }
Plug 'autozimu/LanguageClient-neovim', {
    \ 'branch': 'next',
    \ 'do': './install.sh'
    \ }
Plug 'Shougo/deoplete.nvim', { 'do': ':UpdateRemotePlugins' }

call plug#end()

let g:LanguageClient_serverCommands = {
        \ 'python': ['pyls'],
        \ 'java': ['java',
        \   '-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=1044',
        \   '-Declipse.application=org.eclipse.jdt.ls.core.id1',
        \   '-Dosgi.bundles.defaultStartLevel=4',
        \   '-Declipse.product=org.eclipse.jdt.ls.core.product',
        \   '-jar', '~/.config/nvim/eclipse.jdt.ls/plugins/org.eclipse.equinox.launcher_1.4.0.v20161219-1356.jar',
        \   '-configuration', '~/.config/nvim/eclipse.jdt.ls/config_linux',
        \    '-data', '/tmp']
        \  }

let g:LanguageClient_autoStart = 0
set omnifunc=LanguageClient#complete
let g:LanguageClient_diagnosticsEnable = 0

let g:deoplete#enable_at_startup = 1

There are really no reproduction steps. I just opened a .py file. Typed "". and this is where the completion pops up in the last working version but not the latest.

[autozimu]

There are too many issues in the provided setting.

Error: Unable to access jarfile ~/.config/nvim/eclipse.jdt.ls/plugins/org.eclipse.equinox.launcher_1.4.0.v20161219-1356.jar

It is your responsibility to make sure language server could be started with the provided commands. This clearly says there is something wrong with the jar file/path.

---

let g:LanguageClient_autoStart = 0

If you have this line, language server will not be started automatically when opening a file. Completion won't show up until you start server explicitly with :LanguageClientStart.

Again, with the provided setting and after command :LanguageClientStart, I could see the correct completion list.

You might need to either remove

let g:LanguageClient_autoStart = 0

or run the command explicitly. And you may also need to check your plugin installation, possibly remove and re-install.

---

There are definitely reproduction steps even in this simple case.

• Install plugins with provided vimrc nvim -u /tmp/vimrc +PlugInstall
• Start with empty file nvim -u /tmp/vimrc /tmp/sample.py
• Start typing "".

[schiegl]

It is your responsibility to make sure language server could be started with the provided commands. This clearly says there is something wrong with the jar file/path.

But why is there nothing wrong with the path in version: 2760b3f340dad4b373658d00153511e0adce6b9b. This version of the plugin works.

Also I ran :LanguageClientStart explicitely like you suggested in the issue template. Also autostarting does not make a difference.

And you may also need to check your plugin installation, possibly remove and re-install.

Also did that.

[autozimu]

I see. For the java language server, I think the issue is caused by ~ in arguments not expanded. I will push a fix shortly to fix that.

---

For the python one, I really don't have any idea what's going wrong. Please try at least attach a log here.

[schiegl]

Have your tried deoplete? NCM shows the completion menu but not deoplete.

[autozimu]

Yes, I tested with the provided vimrc, which is using deoplete.

On Mon, Dec 11, 2017 at 01:01 tepf [e-mail] wrote:

Have your tried deoplete? NCM shows the completion menu but not deoplete.

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[nguquen]

I have the same issue, i found the reason is this commit https://github.com/autozimu/LanguageClient-neovim/commit/b85ff8e.
Before:

React[.] -> show all completions

After:

React[.] -> nothing
React.[h] -> [h]asOwnProperty

Look like i must type at least 1 character to show the completion.

[saks]

I have similar problem:

$ cat ~/desktop/test_config.vim               
call plug#begin('~/.config/nvim/plugged')
Plug 'autozimu/LanguageClient-neovim', { 'branch': 'next', 'do': 'make release' }
Plug 'Shougo/deoplete.nvim', { 'do': ':UpdateRemotePlugins' }
call plug#end()

set nocompatible
set noswapfile
set hidden

let g:LanguageClient_loggingLevel = 'DEBUG'
let g:LanguageClient_serverCommands = {
    \ 'rust': ['rustup', 'run', 'nightly', 'rls'],
    \ }

```
$ cat src/lib.rs
pub fn foo() {
//
}

open file:

nvim -u ~/desktop/test_config.vim src/lib.rs

and type in the function body:
```rust
String::

nothing happens. /tmp/LanguageClient.log doesn't have any textDocument/completion calls.
However when I press C-X C-O, I see completion results.

[dschuessler]

Same problem with php-language-server. Completion with \

It doesn't matter if I use deoplete or nvim-completion-manager. Neither does it matter if I use MacVim or Terminal Vim. Other completion sources work fine.

MacVim 8.0.1420
Vim 8.0.642

.vimrc

filetype plugin on
set omnifunc=syntaxcomplete#Complete

call plug#begin('~/.vim/plugged')

if has('nvim')
    Plug 'Shougo/deoplete.nvim', { 'do': ':UpdateRemotePlugins' }
else
    Plug 'Shougo/deoplete.nvim'
    Plug 'roxma/nvim-yarp'
    Plug 'roxma/vim-hug-neovim-rpc'
endif

Plug 'autozimu/LanguageClient-neovim', {'tag': 'binary-*-x86_64-apple-darwin'}
Plug 'roxma/LanguageServer-php-neovim',  {'do': 'composer install && composer run-script parse-stubs'}

call plug#end()

" Use deoplete
let g:deoplete#enable_at_startup = 1

" LanguageClient-neovim
let g:LanguageClient_serverCommands = {
    \'python' : ['pyls'],
    \'php' : ['php', '~/.vim/plugged/LanguageServer-php-neovim/vendor/bin/php-language-server.php']
    \ }

[autozimu]

Should fix with https://github.com/autozimu/LanguageClient-neovim/commit/a7e940cc9ff2218e694e251438f0c9a87c0b45f7

[dschuessler]

Just updated. The problem persists without any difference for me.

[autozimu]

You need to wait for CI to build binaries and make sure the plugin updated.

On Sun, Dec 31, 2017 at 14:53 Phosphor303 [e-mail] wrote:

Just updated. The problem persists without any difference for me.

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[saks]

Thank you very much!
It fixed problem for me. When I type String:: I get suggestions from deoplete. However when I select particular option, it inserts a template like:

String::from_iter(${1:iter})

Any plans to fix it?

[autozimu]

That’s code snippet, which is kind of expected. Haven’t got interest to
look into that yet.

On Sun, Dec 31, 2017 at 14:58 Aliaksandr Rahalevich <
[email protected]> wrote:

Thank you very much!
It fixed problem for me. When I type String:: I get suggestions from
deoplete. However when I select particular option, it inserts a template
like:

String::from_iter(${1:iter})

Any plans to fix it?

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[saks]

@autozimu, do you have any ideas about how to address this issue? Should it be done on rust or viml side? I can try to help with this if you like.

[autozimu]

Basically what needs to be done is to detect if snippet plugin is loaded, if not, indicate that in the
initialize request parameters sent to server.

https://github.com/Microsoft/language-server-protocol/blob/gh-pages/specification.md Search for snippetSupport.

[dschuessler]

I waited a day now, used the .vimrc from my original post, deleted ~.vim/plugged/LanguageClient-neovim to make sure the old version of the plugin is wiped, ran :PlugInstall and waited until it was undoubtedly finished. The problem still persits as described above.

I'm happy to help with further troubleshooting.

[bzm3r]

Using LCS 0.1.2.8, and I am having the same issue as described by others here. Pressing <C-x><C-o> shows the completion popup, but it otherwise does not show up automatically. Pressing Enter/Tab does not do what is expected and select a completion. I do not have any snippet plugins installed. Hints?

[saks]

Same here

[bzm3r]

@saks I was able to fix this issue by making sure that Python 3 was properly installed (when you check your :messages in nvim, do you see any helpful messages pointing to this?), and that neovim-completion-manager had the right variables set to ensure auto-popup.

[saks]

@bzm3r, thanks for your suggestion. I've checked:
```

• OK: Latest python2-neovim is installed: 0.2.0
  ...
• OK: Latest python3-neovim is installed: 0.2.0
  `` Also:messages` is empty. I'm using deoplete and it's used to open popup. I've not changed any configuration.

P.S.
Pressing <C-x><C-o> doesn't give any suggestions too. Does this mean anything?

[bzm3r]

@saks

Pressing doesn't give any suggestions too. Does this mean anything?

I'm not knowledgeable enough to know :( but, let me share my minimal init.vim with you, and you can check to see if it gives you proper completion? It is here: https://gist.github.com/bzm3r/cdc915b5ff137a4a93df0f991c937668

You might want to tweak some of the language specific settings (e.g. remove the rust stuff) to reflect your use case better, but this minimal set up, I have working popups. (note though that I am using nvim-completion-manager, might be worth trying that out just to make sure its not an LCS issue?)

[saks]

@bzm3r, thanks for sharing. I think I found the issue. I didn't figured out that dropdown preview is provided by fzf. After I've added it - everything works.
Thanks!

[bzm3r]

@saks glad it works for you!