Problem with vim's fold mark signs in C++ comments

[thefallenidealist]

Problems summary

deoplete-clang will report:

Error detected while processing function 38_completion_delayed[4]..38_completion_begin:
line 28:
E475: Invalid argument: Channel doesn't exist

Expected

Normal deoplete-clang suggestion.

Environment Information

• OS:
  FreeBSD 11.0-RELEASE
• Neovim version:
  0.1.6 # FreeBSD pkg
  v0.2.0-45-g7666b495
  v0.2.0-149-gaa4ef896 # todays source
• Clang version:
  3.8.1
  3.7.1

Provide a minimal init.vim with less than 50 lines and not plugin manager (Required!)

call plug#begin('~/.vim/plugged')
Plug 'Shougo/deoplete.nvim', { 'do': ':UpdateRemotePlugins' }
Plug 'zchee/deoplete-clang'
call plug#end()

let g:deoplete#enable_at_startup = 1

let g:deoplete#sources#clang#libclang_path = "/usr/local/llvm38/lib/libclang.so"
let g:deoplete#sources#clang#clang_header  = "/usr/local/llvm38/include/clang"

The reproduce ways from neovim starting (Required!)

C++ example which will trigger the error:
http://pastebin.com/NrPE1k7T

• Open the file
• Write "str" as argument to "printr" function.
• Wait a second or two
• Write "i"

Screen shot (if possible)

Don't work:

Works:

Upload the log file

:messages
Error detected while processing function 38_completion_delayed[4]..38_completion_begin:
line 28:
E475: Invalid argument: Channel doesn't exist
Error detected while processing function 38_completion_delayed[4]..38_completion_begin:
line 28:
E475: Invalid argument: Channel doesn't exist
Error detected while processing function 38_completion_delayed[4]..38_completion_begin:
line 28:
E475: Invalid argument: Channel doesn't exist
Error detected while processing function 38_completion_delayed[4]..38_completion_begin:
line 28:
E475: Invalid argument: Channel doesn't exist
Error detected while processing function 38_completion_delayed[4]..38_completion_begin:
line 28:
E475: Invalid argument: Channel doesn't exist

Possible fix:

I have noticed that problem would not appear if:

• there is no "// }" "// }}}" at the end of the class definition
• there is no class declaration
• "#define printr" is commented out