Deoplete.nvim: deoplete trigger competition automatically

[srghma]

Problems summary

after recent update I began to notice that sometimes, if I quickly enough print word - it will be completed automatically, without permission

The reproduce ways from neovim starting

init.vim, which I use in reproduction

" setup & dein {{{
  set rtp+=~/.config/nvim/bundle/repos/github.com/Shougo/dein.vim
  call dein#begin(expand('~/.config/nvim/bundle/'))
  call dein#add('Shougo/dein.vim')
"}}}

call dein#add('Shougo/deoplete.nvim') " {{{
  let g:deoplete#enable_at_startup = 1
" }}}

In command line
rm -rf nvim/bundle nvim/.cache && git clone https://github.com/Shougo/dein.vim nvim/bundle/repos/github.com/Shougo/dein.vim

and video

As you see, if I type new quickly enough (skill is required :smile:), it paste first match automatically, I don`t remember such behavior in past

Environment Information

• deoplete version(SHA1): 7a9865ae3db5ebed3c5b96f48ed3d769a99c72cf (_oh, I see in commit that you had changed auto_complete_delay_)
• OS: archlinux
• neovim version:

 pacman -Qi neovim-git 
Name            : neovim-git
Version         : 0.1.7.r707.gd290c1342-1

NVIM v0.2.0-707-gd290c1342
Build type: RelWithDebInfo
Compilation: /usr/bin/cc -march=x86-64 -mtune=generic -O2 -pipe -fstack-protector-strong -Wconversion -O2 -g -DDISABLE_LOG -Wall -Wextra -pedantic -Wno-unused-parameter -Wstrict-prototypes -std=gnu99 -Wvla -fstack-protector-strong -fdiagnostics-color=auto -DINCLUDE_GENERATED_DECLARATIONS -DHAVE_CONFIG_H -D_GNU_SOURCE -I/tmp/yaourt-tmp-bjorn/aur-neovim-git/src/neovim-git/build/config -I/tmp/yaourt-tmp-bjorn/aur-neovim-git/src/neovim-git/src -I/usr/include -I/usr/include -I/usr/include -I/usr/include -I/usr/include -I/usr/include -I/usr/include -I/tmp/yaourt-tmp-bjorn/aur-neovim-git/src/neovim-git/build/src/nvim/auto -I/tmp/yaourt-tmp-bjorn/aur-neovim-git/src/neovim-git/build/include
Compiled by bjorn@machine

Optional features included (+) or not (-): +acl   +iconv    +jemalloc +tui      
For differences from Vim, see :help vim-differences

   system vimrc file: "$VIM/sysinit.vim"
  fall-back for $VIM: "/usr/share/nvim"

• :CheckHealth result(neovim ver.0.1.5-452+):

## Configuration
  - SUCCESS: no issues found

## Performance
  - SUCCESS: Build type: RelWithDebInfo

## Remote Plugins
  - SUCCESS: Up to date

## terminal
  - INFO: key_backspace (kbs) terminfo entry: key_backspace=\177
  - INFO: key_dc (kdch1) terminfo entry: key_dc=\E[3~

health#provider#check
========================================================================
## Clipboard
  - SUCCESS: Clipboard tool found: xclip

## Python 2 provider
  - INFO: `g:python_host_prog` is not set.  Searching for python2 in the environment.
  - INFO: Executable: /usr/bin/python2
  - INFO: Python2 version: 2.7.13
  - INFO: python2-neovim version: 0.1.13
  - SUCCESS: Latest python2-neovim is installed: 0.1.13

## Python 3 provider
  - INFO: `g:python3_host_prog` is not set.  Searching for python3 in the environment.
  - INFO: Executable: /usr/bin/python3
  - INFO: Python3 version: 3.6.0
  - INFO: python3-neovim version: 0.1.13
  - SUCCESS: Latest python3-neovim is installed: 0.1.13

## Ruby provider
  - INFO: Ruby: ruby 2.4.0p0 (2016-12-24 revision 57164) [x86_64-linux]
  - INFO: Host: /home/bjorn/.rvm/gems/ruby-2.4.0@rails-bookstore/bin/neovim-ruby-host
  - ERROR: Command timed out: gem list -ra ^neovim$
  - ERROR: Failed to run: gem list -ra ^neovim$
    - SUGGESTIONS:
      - Make sure you're connected to the internet.
      - Are you behind a firewall or proxy?

[tricktux]

I get the same behavior on Windows. Was actually preparing to report.

[srghma]

@rmolin88 , I think it auto_complete_delay, after I had changed it to old value, weird behavior gone

let g:deoplete#auto_complete_delay=50

[tricktux]

@BjornMelgaard Thanks! Seems to have gone away with your fix

[srghma]

@rmolin88 , it`s not, just now I had same experience
Will see what happen tomorrow

[Shougo]

Well, because deoplete is asynchronous...
It is hard to fix.

[Shougo]

I have added pumvisible() check.
Please check the latest version.

[Shougo]

@BjornMelgaard Please add the real reproduce ways in the video.
You have not uploaded the script and the reproduce ways in editing the file.
I cannot reproduce it.

[billyvg]

Here is my reproduction video:
https://asciinema.org/a/8ellal7t7rosye9auw0yhez7d
I switch between auto_complete_delay = 0 and 50

Using commit 9574fcdcb74011b866b58ae7ca750c71272c0614

:version
NVIM v0.2.0-44-g80892924

:CheckHealth

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
========================================================================
## Configuration
  - SUCCESS: no issues found

## Performance
  - SUCCESS: Build type: RelWithDebInfo

## Remote Plugins
  - SUCCESS: Up to date

## terminfo
  - INFO: key_backspace terminfo entry: key_backspace=\177,

health#provider#check
========================================================================
## Clipboard
  - SUCCESS: Clipboard tool found: pbcopy

## Python 2 provider
  - INFO: `g:python_host_prog` is not set.  Searching for python2 in the environment.
  - INFO: Executable: /usr/local/bin/python2
  - INFO: Python2 version: 2.7.13
  - INFO: python2-neovim version: 0.1.12
  - WARNING: Latest python2-neovim is NOT installed: 0.1.13

## Python 3 provider
  - INFO: `g:python3_host_prog` is not set.  Searching for python3 in the environment.
  - INFO: Executable: /usr/local/bin/python3
  - INFO: Python3 version: 3.6.0
  - INFO: python3-neovim version: 0.1.13
  - SUCCESS: Latest python3-neovim is installed: 0.1.13

## Ruby provider
  - ERROR: Missing Neovim RubyGem
    - SUGGESTIONS:
      - Install or upgrade the neovim RubyGem using `gem install neovim`.
  - INFO: Ruby Version: ruby 2.4.0p0 (2016-12-24 revision 57164) [x86_64-darwin16]
  - INFO: Host Executable: not found
  - INFO: Host Version: not found

[srghma]

@Shougo, I have updated to new version and set g:auto_complete_delay = 50, but this does not fix bug.

Reproduction:
video
used config/nvim with log

[chee]

I am having this exact problem and it does seem to stop happening when i

let g:deoplete#auto_complete_delay = 147

the bug is still there if #auto_complete_delay is around 50, but above 100 seems to be fine

perhaps some race condition?

[tricktux]

I have to say that I haven't seen it anymore with delay of 50.

On Mar 1, 2017 11:19 AM, "chee" [e-mail] wrote:

I am having this exact problem and it does seem to stop happening when i

let g:deoplete#auto_complete_delay = 147

the bug is still there if #auto_complete_delay is around 50, but above 100
seems to be fine

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[srghma]

@chee, :smile: I have thought the same with auto_complete_delay = 50, and I just wondering, how you get this number?)

[billyvg]

Within the last few days the default has gone from 150 -> 50 -> 0, so try 150 if you're still having issues.

[srghma]

@billyvg , ha, great descending. I already using 150/147 and I have been programming for an hour and didnt notice this bug, thanks @chee :+1:

[chee]

thanks, shougo :tada:!!

[srghma]

I'm sorry guys, but I have reinstalled all plugins without remainder, made "UpdateRemotePlugins" and bug still present
But when I try to reproduce it on video, I can't get right combination as I did. Should I try harder? Am I one who experience that?
I'll better stick to let g:deoplete#auto_complete_delay = 150, at least it works

" have experienced bug with this in my main init.vim
call dein#add('Shougo/deoplete.nvim') " {{{
  call dein#add('fishbullet/deoplete-ruby')
  let g:deoplete#enable_at_startup = 1
  " let g:deoplete#auto_complete_delay = 150
" }}}

[offa]

Am I one who experience that?

Me too. After the pushed fixed, the bug happens less likely but it's still here (at least for me). Setting g:deoplete#auto_complete_delay to 50 or 150 works for me.

[Shougo]

I have reproduced the problem if g:deoplete#eable_refresh_always is 1.
So I have changed g:deoplete#auto_complete_delay default value.
It seems complete() bug. But it is not easy to fix.

[Shougo]

I had changed the default value recently.
Because, other people said deoplete completion is slow.
I don't think so, but the delay seems long.
So I had changed it...

[VasLem]

Unfortunately the problem persists for me, even after the last update (OP of #441). I do not know if I am the only one who keeps having the problem, but my configuration is close to the default one and the plugins I use do not seem to conflict with the deoplete plugin. I have to note however that its frequency has decreased.

[Shougo]

This is bug of Vim/neovim.
I will create the patch to fix it.

It depends on your machine speed and your configuration and your input time.
If the problem persists, please change g:deoplete#auto_complete_delay time.

[alok]

@VasLem I also have this issue. My delay is set to 10, but I'm going to increase it to try to avoid this issue.

[zhou13]

Another way to workaround this problem is to set
let g:deoplete#complete_method = "omnifunc" let g:deoplete#auto_complete_delay = 0
so that you get a fast completion.

Meanwhile, could @Shougo reopen this bug open for tracking until the problem is fixed totally?

[Shougo]

@zhou13 Please test https://github.com/Shougo/deoplete.nvim/issues/447.

[zhou13]

I opened some random big python sources and it seems that the bug is fixed. I will report if there is any problem.

[alok]

I'm still seeing it.
On Mon, Mar 27, 2017 at 3:30 AM Yichao Zhou [e-mail]
wrote:

I opened some random big python sources and it seems that the bug is
fixed. I will report if there is any problem.

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>

• Alok

[Shougo]

@Alok Please test #447.

[alok]

447 seems to work except that I got this error message editing a markdown file with dictionary completion enabled:

[deoplete] Traceback (most recent call last):
[deoplete]   File "/Users/alokbeniwal/.config/nvim/bundle/deoplete.nvim/rplugin/python3/deoplete/deoplete.py", line 46, in completion_begin
[deoplete]     self.gather_results(context), context['input'])
[deoplete]   File "/Users/alokbeniwal/.config/nvim/bundle/deoplete.nvim/rplugin/python3/deoplete/deoplete.py", line 146, in merge_results
[deoplete]     [x['context']['complete_position'] for x in results
[deoplete] ValueError: min() arg is an empty sequence

[z33ky]

@Alok this should fix, or at least work around, it:

diff --git a/rplugin/python3/deoplete/deoplete.py b/rplugin/python3/deoplete/deoplete.py
index ed8ff51..515e0b8 100644
--- a/rplugin/python3/deoplete/deoplete.py
+++ b/rplugin/python3/deoplete/deoplete.py
@@ -139,12 +139,13 @@ class Deoplete(logger.LoggingMixin):
         return self._results.values()

     def merge_results(self, results, context_input):
-        if not results:
-            return (False, -1, [])
-
         complete_position = min(
             [x['context']['complete_position'] for x in results
-             if x['context']['candidates']])
+             if x['context']['candidates']],
+            None)
+
+        if not complete_position:
+            return (False, -1, [])

         candidates = []
         for result in [x for x in results

[Shougo]

@Alok I have fixed the error. Please use the latest version.

[Shougo]

Fixed.