<Plug>(cm_force_refresh) not working properly on Vim8 on Windows about nvim-completion-manager HOT 12 CLOSED

I can't reproduce it.

Could you reproduce this with

set NVIM_PYTHON_LOG_FILE=nvim.log
set NVIM_NCM_LOG_LEVEL=DEBUG
nvim test.js

and show the contents of the nvim.log_py3_cm_core and nvim.log_py3_cm_sources.cm_tern?

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There's a possible cause of this issue, the <Plug>(cm_force_refresh) is triggered before the source channel started.

On my machine, all channels start within 3 seconds. It's hard to reproduce it in this case.

So I guess there may be other causes, which is why the log files are needed.

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Issue is only related to gvim.
I tried it with minimal vimrc and couldn't reproduce the issue. Then I tried removing chunks of my vimrc and found out that

set guicursor=a:blinkon0          " disable blinking

is to blame. When I have it set I need to press <Plug>(cm_force_refresh) two times. Without it, it works as intended, even though it has small delay.

This is my minimal vimrc

call plug#begin()

Plug 'roxma/nvim-completion-manager'
if !has('nvim')
    Plug 'roxma/vim-hug-neovim-rpc'
endif
Plug 'roxma/nvim-cm-tern',  {'do': 'npm install'}

let g:cm_auto_popup = 0
imap <tab> <Plug>(cm_force_refresh)
set guicursor=a:blinkon0          " disable blinking

call plug#end()

Steps to reproduce:

1. open blank buffer
2. type fooooobaaaar
3. type foooo
4. type <tab>

I have to press tab 2 times to get completions.

nvim.log_py3_cm_core:
http://pastebin.com/Mb8fzSdz
nvim.log_py3_cm_sources.cm_tern:
http://pastebin.com/kBetxuTc

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Thanks! I'll look into that.

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It seems there's something wrong with vim's timer according to the log files, I switch to python implementation for the timer.

Update both plugin, NCM and ncm-tern, and check whether the issue is still happening.

If it's still happening, I'll still need the log files.

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It's happening in a buffer without ft set also. Issue is not exclusively related to tern source. I updated plugins and it's still happening.
Log file:
nvim.log_py3_cm_core
http://pastebin.com/J57apttu

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I get this reproduced.

The popup menu is displayed after seconds, or 10+ seconds. But according to the log file, the complete process is finished in 1 seond. I believe this is a vim issue.

I also noticed that if I touch <ctrl> after I press <Plug>(cm_force_refresh), the menu will be displayed.

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Oh I got a workaround, just put this into your vimrc:

func g:Foo(...)
" do nothing
endfunc
call timer_start(100,function('g:Foo'),{'repeat':-1})

I guess this somehow activates vim's timer, and then the screen gets updated.

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This may also be related to the ncm-tern slow issue you reported on roxma/nvim-cm-tern#2

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Thank you! The workaround solves my issue.

As for tern issue, completions are still slow. I get buffer completions instantly and then after a second or two tern completions. I get the same delay with both automatic and manual completion.

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I encountered similar issue in ALE and Neomake and I would like to report issue directly to Vim. But I struggle with producing minimal reproducible case. Is this issue connected with job_start function?

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This issue is related to timer and vim's rpc somehow.

If there's no timer started, the display of popup menu get significantly delayed.

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