Youcompleteme: Error on vim start up when UltiSnips is not installed

[bamoqi]

Issue Prelude

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the brackets) _before_ filing your issue:

• [x] I have read and understood YCM's CONTRIBUTING document.
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  :YcmToggleLogs stderr.
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Issue Details

vim version: vim 7.4 ( vim-gtk deb package )
OS: Kubuntu 14.04 LTS

I installed YCM via Vundle and compiled it with --clang-completer --tern-completer. If UltiSnips is not installed, and I start vim with
vim test.c
Errors are shown:

Error detected while processing function youcompleteme#Enable..<SNR>64_OnBufferRead:
line   17:
E117: Unknown function: UltiSnips#SnippetsInCurrentScope
Press ENTER or type command to continue
Error detected while processing function youcompleteme#Enable..<SNR>64_OnBufferRead:
line   17:
E15: Invalid expression: UltiSnips#SnippetsInCurrentScope( 1 )

I tried
let g:ycm_use_ultisnips_completer = 0
but it has no effect on the errors.

These errors goes away after I enable UltiSnips with Vundle.

---

YcmDebugInfo

Printing YouCompleteMe debug information...
-- Server has Clang support compiled in: True
-- Clang version: clang version 3.9.0 (tags/RELEASE_390/final)
-- C-family completer debug information:
--   Configuration file found and loaded
--   Configuration path: /home/jim/software/etc/ycm_extra_conf.py
--   Flags: ['-g', '-Wall', '-Wextra', '-Wno-unused-variable', '-Wundef', '-std=c++11', '-x', 'c++', '-I', '/home/jim/software/
etc/include', '-I', '/home/jim/software/etc/.', '-isystem', '/home/jim/devel/include', '-isystem', '/home/jim/software/include'
, '-resource-dir=/home/jim/.vim/bundle/YouCompleteMe/third_party/ycmd/ycmd/../clang_includes', '-fspell-checking']
-- Server running at: http://127.0.0.1:32934
-- Server process ID: 10931
-- Server logfiles:
--   /tmp/ycm_temp/server_32934_stdout.log
--   /tmp/ycm_temp/server_32934_stderr.log

YcmToggleLogs stderr

2016-09-16 04:41:47,666 - INFO - Received event notification
2016-09-16 04:41:50,477 - INFO - Received health request
2016-09-16 04:41:50,490 - INFO - Received debug info request

[puremourning]

Thanks for the detailed and measured report!

I think we've seen this elsewhere, though I personally cannot reproduce it.

[tuna-f1sh]

I am also getting this issue with the latest version (I don't use UltiSnips). No problem previously. Errors I get:

Error detected while processing function youcompleteme#Enable..<SNR>57_OnBufferRead:
line   17:
E117: Unknown function: UltiSnips#SnippetsInCurrentScope
Press ENTER or type command to continue
Error detected while processing function youcompleteme#Enable..<SNR>57_OnBufferRead:
line   17:
E15: Invalid expression: UltiSnips#SnippetsInCurrentScope( 1 )  

OS: OS X 10.11.6
Vim: 7.4, version output:

VIM - Vi IMproved 7.4 (2013 Aug 10, compiled Oct 25 2013 20:05:26)
MacOS X (unix) version
Included patches: 1-52
Compiled by Bjorn Winckler <[email protected]>
Huge version with MacVim GUI.  Features included (+) or not (-):
+acl             +cmdline_info    +emacs_tags      -gettext         -lua             +mouse_urxvt     +profile         +statusline      +transparency    -X11
+arabic          +comments        +eval            -hangul_input    +menu            +mouse_xterm     +python          -sun_workshop    +user_commands   -xfontset
+autocmd         +conceal         +ex_extra        +iconv           +mksession       +multi_byte      -python3         +syntax          +vertsplit       +xim
+balloon_eval    +cryptv          +extra_search    +insert_expand   +modify_fname    +multi_lang      +quickfix        +tag_binary      +virtualedit     -xsmp
+browse          +cscope          +farsi           +jumplist        +mouse           -mzscheme        +reltime         +tag_old_static  +visual          -xterm_clipboard
++builtin_terms  +cursorbind      +file_in_path    +keymap          +mouseshape      +netbeans_intg   +rightleft       -tag_any_white   +visualextra     -xterm_save
+byte_offset     +cursorshape     +find_in_path    +langmap         +mouse_dec       +odbeditor       +ruby            -tcl             +viminfo         -xpm
+cindent         +dialog_con_gui  +float           +libcall         -mouse_gpm       +path_extra      +scrollbind      +terminfo        +vreplace
+clientserver    +diff            +folding         +linebreak       -mouse_jsbterm   +perl            +signs           +termresponse    +wildignore
+clipboard       +digraphs        -footer          +lispindent      +mouse_netterm   +persistent_undo +smartindent     +textobjects     +wildmenu
+cmdline_compl   +dnd             +fork()          +listcmds        +mouse_sgr       +postscript      -sniff           +title           +windows
+cmdline_hist    -ebcdic          +fullscreen      +localmap        -mouse_sysmouse  +printer         +startuptime     +toolbar         +writebackup
   system vimrc file: "$VIM/vimrc"
     user vimrc file: "$HOME/.vimrc"
 2nd user vimrc file: "~/.vim/vimrc"
      user exrc file: "$HOME/.exrc"
  system gvimrc file: "$VIM/gvimrc"
    user gvimrc file: "$HOME/.gvimrc"
2nd user gvimrc file: "~/.vim/gvimrc"
    system menu file: "$VIMRUNTIME/menu.vim"
  fall-back for $VIM: "/Applications/MacVim.app/Contents/Resources/vim"
Compilation:
clang -c -I. -Iproto -DHAVE_CONFIG_H -DFEAT_GUI_MACVIM -Wall -Wno-unknown-pragmas -pipe  -DMACOS_X_UNIX -no-cpp-precomp  -g -O2 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1
Linking: clang   -L. -L/usr/local/lib -L. -L/usr/local/lib  -L/usr/local/lib -o Vim -framework Cocoa -framework Carbon       -lm -lncurses  -liconv -framework Cocoa   -fstack-protector
 -L/usr/local/lib  -L/System/Library/Perl/5.16/darwin-thread-multi-2level/CORE -lperl -framework Python   -framework Ruby

[micbou]

Could you try PR #2337? It should fix the issue.

[tuna-f1sh]

Thanks, it didn't fix the issue though unfortunately. I pulled the edited file and re-run the install script but still suffer the same error.

I've only had a brief glance so this may not cover all bases but I have been able to continue by using or rather than and (vim.eval( "exists( '*UltiSnips#SnippetsInCurrentScope' )" ) seems to be a good test for whether a user has UltiSnips installed?):

    if ( not vimsupport.VimVersionAtLeast( "7.4.107" ) or
         not vim.eval( "exists( '*UltiSnips#SnippetsInCurrentScope' )" ) ):
      return

[micbou]

That's strange. What is the output of

:py print( vimsupport.VimVersionAtLeast( "7.4.107" ) )

and

:py print( vim.eval( "exists( '*UltiSnips#SnippetsInCurrentScope' )" ) )

in Vim?

[tuna-f1sh]

Yes:

:py print( vimsupport.VimVersionAtLeast( "7.4.107" ) )
False
:py print( vim.eval( "exists( '*UltiSnips#SnippetsInCurrentScope' )" ) )
0

Intrigued as to how this gets through the and, I tried:

:py print( not vim.eval( "exists( '*UltiSnips#SnippetsInCurrentScope' )" ) )
False

It seems there is some discrepancy over bit and worded logic?! :py print( not vim.eval( "exists( '*UltiSnips#SnippetsInCurrentScope' )" ) ) returns True.

[micbou]

Thanks. It should be fixed now. Could you try again?

[tuna-f1sh]

Yes GetBoolValue appears to have fixed it, thanks.

[shank7485]

I still seem to have the issue. I get the same

Error detected while processing function youcompleteme#Enable..<SNR>14_OnBufferRead:
line   17:
E117: Unknown function: UltiSnips#SnippetsInCurrentScope
Press ENTER or type command to continue
Error detected while processing function youcompleteme#Enable..<SNR>14_OnBufferRead:
line   17:
E15: Invalid expression: UltiSnips#SnippetsInCurrentScope( 1 )
Press ENTER or type command to continue

@tuna-f1sh Can you please let me know how you fixed this? YCM was working fine until the recent update from last week.

[micbou]

@shank7485 Update your Vim version to 7.4.107 or later.

[shank7485]

@micbou Thanks. That worked.

And for those looking to update Vim using apt-get on Ubuntu Linux, the version won't go beyond 7.40. Do the following to get the latest Vim:
sudo add-apt-repository ppa:pkg-vim/vim-daily
sudo apt-get update
sudo apt-get install vim
dpkg -s vim | grep 'Version' #should be greater than 7.41

Hope it helps.

[micbou]

Closed as we bumped the minimum Vim version requirement to 7.4.143 with PR #1901. This version contains the patch that fixes this issue.