Deoplete.nvim: Error occurred calling omnifunction: rubycomplete#Complete

[josemarluedke]

Problems summary

I just pulled latest of deoplete and started getting this error when typing any dot (.) for example: foo.bar.

Error occurred calling omnifunction: rubycomplete#Complete

Expected

No errors

Environment Information

• OS: MacOX Sierra

health#deoplete#check
================================================================================

## deoplete.nvim
  - SUCCESS: has("nvim") was successful
  - SUCCESS: has("python3") was successful
  - INFO: If you're still having problems, try the following commands:
    $ export NVIM_PYTHON_LOG_FILE=/tmp/log
    $ export NVIM_PYTHON_LOG_LEVEL=DEBUG
    $ nvim
    $ cat /tmp/log_{PID}
    and then create an issue on github

health#nvim#check
================================================================================

## Remote Plugins
  - SUCCESS: Up to date

## Python 2 provider
  - WARNING: No Python interpreter was found with the neovim module.  Using the first available for diagnostics.
  - WARNING: provider/pythonx: Could not load Python 2:
    python2 not found in search path or not executable.
    /usr/bin/python2.7 does not have the neovim module installed. See ":help provider-python".
    /usr/bin/python2.6 does not have the neovim module installed. See ":help provider-python".
    /usr/bin/python does not have the neovim module installed. See ":help provider-python".
  - ERROR: Python provider error
      - SUGGESTIONS:
        - provider/pythonx: Could not load Python 2:
          python2 not found in search path or not executable.
          /usr/bin/python2.7 does not have the neovim module installed. See ":help provider-python".
          /usr/bin/python2.6 does not have the neovim module installed. See ":help provider-python".
          /usr/bin/python does not have the neovim module installed. See ":help provider-python".
  - INFO: Executable: Not found

## Python 3 provider
  - INFO: `g:python3_host_prog` is not set.  Searching for python3 in the environment.
  - INFO: There are multiple python3 executables found.  Set "g:python3_host_prog" to avoid surprises.
  - INFO: Executable: /Library/Frameworks/Python.framework/Versions/3.5/bin/python3
  - INFO: Other python executable: /usr/local/bin/python3
  - INFO: Python3 version: 3.5.1
  - INFO: python3-neovim Version: 0.1.9
  - SUCCESS: Latest Neovim Python client is installed: (up to date)

## Ruby provider
  - ERROR: Missing Neovim RubyGem
      - SUGGESTIONS:
        - Install or upgrade the neovim RubyGem using `gem install neovim`.
  - INFO: Ruby Version: ruby 2.3.0p0 (2015-12-25 revision 53290) [x86_64-darwin15]
  - INFO: Host Executable: not found
  - INFO: Host Version: not found

Provide a minimal init.vim with less than 50 lines (Required!)

https://github.com/josemarluedke/vimfiles/blob/master/vimrc

The reproduce ways from neovim starting (Required!)

1. edit any ruby file
   

   Screen shot (if possible)

[Shougo]

Please upload :message result.
I have not ESP skills.

[Shougo]

I think rubycomplete does not work. Because, Ruby provider is not installed.

## Ruby provider
  - ERROR: Missing Neovim RubyGem
      - SUGGESTIONS:
        - Install or upgrade the neovim RubyGem using `gem install neovim`.
  - INFO: Ruby Version: ruby 2.3.0p0 (2015-12-25 revision 53290) [x86_64-darwin15]
  - INFO: Host Executable: not found
  - INFO: Host Version: not found

[josemarluedke]

@Shougo what do you mean by :message result?

Also, I did install the gem today after seen the error, but the it did not solve the problem. Note that I was not having this problem even though I did not have the gem install before.

[Shougo]

if_ruby is works properly?
Why Ruby provider is not detected in the :CheckHealth result?

@Shougo what do you mean by :message result?

Please execute :message and paste the screenshot after the error is occurred.

[josemarluedke]

Ahh okay: Here you go:

[Shougo]

OK. I should improve the error messages.
Please update deoplete and re-upload :messages result.

[josemarluedke]

Done, but no new information is displayed:

[Shougo]

Hm. I cannot help you.
But you should check if_ruby works properly.

[Shougo]

You should check normal omnifunc works by <C-x><C-o>.

[Shougo]

I have tested rubycomplete#Complete and it works for me.

[Shougo]

I have improved the trace.
Please update deoplete and re-upload :messages result.

[josemarluedke]

Okay, now we got some values:

How can I test if_ruby works properly ?

[Shougo]

OK. Your if_ruby does not work.

How can I test if_ruby works properly ?

You can check it by :echo has('ruby').

Also, I did install the gem today after seen the error, but the it did not solve the problem. Note that I was not having this problem even though I did not have the gem install before.

Really? I have executed sudo gem install neovim and it works.

[josemarluedke]

The result of :echo has('ruby') was 1.

Interesting, you are doing a sudo to get the gem installed. I was just doing gem install neovim, without sudo. I use rbenv to get different versions of ruby so that probably affected it.

Doing a sudo gem install neovim worked for me. My problem was actually invalid. Thanks for sticking with me and adding more message to the error log.

I hope this can help other users to solve similar problems.

[Shougo]

OK

[exAspArk]

I guess it's better to mention about sudo gem install neovim in readme.

P.S. the error was introduced in this commit https://github.com/Shougo/deoplete.nvim/commit/981aedb97b0bc75331eccddef5794c8e3899b12d

[Shougo]

.S. the error was introduced in this commit 981aedb

This is not deoplete problem.
The commit just prints the error.

[exAspArk]

@Shougo I totally agree that it's not deoplete problem.

But the error occurs when I use the updated deoplete plugin for ruby files. IMHO at least it is good to inform your users how to prevent their neovim crashing after installing the plugin ✌️

[cbrwizard]

Also had the same error, also used rbenv.
Running sudo gem install neovim helped.
If I didn't find this issue I probably wouldn't have solved it.