vimrc for multiple-cursors and YouCompleteMe integration

.vimrc

" Experimentally integrate YouCompleteMe with vim-multiple-cursors, otherwise    
" the numerous Cursor events cause great slowness                                
" (https://github.com/kristijanhusak/vim-multiple-cursors/issues/4)

function Multiple_cursors_before()                                               
  let s:old_ycm_whitelist = g:ycm_filetype_whitelist                           
  let g:ycm_filetype_whitelist = {}                                            
endfunction                                                                      
                                                                                 
function Multiple_cursors_after()                                                
  let g:ycm_filetype_whitelist = s:old_ycm_whitelist                           
endfunction                                            

Thank you! I wish this was in a readme somewhere instead of buried in issue comments.

Is this still working ? if I try multiple-cursors in files that are about 400 lines vim and neovim just freeze. You can test by opening one of the files below.
I have my vimrc splited into these two files if you need to take a look on them: vim bultin options and vim plugins options.

Good, works as expect