Add nvim configuration

.config/nvim/init.vim

+" Install vim-plug (from vim bootstrap)
+let vimplug_exists=expand('~/.config/nvim/autoload/plug.vim')
+
+if !filereadable(vimplug_exists)
+  echo "Installing Vim-Plug..."
+  echo ""
+  silent !\curl -fLo ~/.config/nvim/autoload/plug.vim --create-dirs https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
+  let g:not_finish_vimplug = "yes"
+
+  autocmd VimEnter * PlugInstall
+endif
+
+
+" plugins
+call plug#begin('~/.vim/plugged')
+    Plug 'scrooloose/nerdtree'
+    Plug 'tpope/vim-commentary'
+    Plug 'tpope/vim-fugitive'
+    Plug 'ctrlpvim/ctrlp.vim'
+    Plug 'vim-airline/vim-airline'
+    Plug 'vim-airline/vim-airline-themes'
+    Plug 'airblade/vim-gitgutter'
+    Plug 'bronson/vim-trailing-whitespace'
+
+    Plug 'Xuyuanp/nerdtree-git-plugin'
+
+    Plug 'rhysd/vim-crystal'
+    Plug 'fatih/vim-go'
+    Plug 'chriskempson/base16-vim'
+    Plug 'altercation/vim-colors-solarized'
+    Plug 'morhetz/gruvbox'
+    Plug 'sonph/onehalf', {'rtp': 'vim/'}
+    Plug 'arcticicestudio/nord-vim'
+
+    " Plug 'ensime/ensime-vim'
+
+    Plug 'majutsushi/tagbar'
+    " Plug 'scrooloose/syntastic'
+    Plug 'vim-scripts/grep.vim'
+    Plug 'AndrewRadev/splitjoin.vim'
+    Plug 'inkarkat/vim-ingo-library'
+    Plug 'vim-scripts/QuickFixCurrentNumber'
+
+    " Gonvim
+    Plug 'dzhou121/gonvim-fuzzy'       " Vim plug
+    Plug 'equalsraf/neovim-gui-shim'       " Vim plug
+
+    " Language server
+    Plug 'autozimu/LanguageClient-neovim', {
+    \ 'branch': 'next',
+    \ 'do': 'bash install.sh',
+    \ }
+
+    " (Optional) Multi-entry selection UI.
+    Plug 'junegunn/fzf'
+
+    if has('nvim')
+      Plug 'Shougo/deoplete.nvim', { 'do': ':UpdateRemotePlugins' }
+    else
+      Plug 'Shougo/deoplete.nvim'
+      Plug 'roxma/nvim-yarp'
+      Plug 'roxma/vim-hug-neovim-rpc'
+    endif
+    Plug 'zchee/deoplete-go', { 'do': 'make'}
+    Plug 'zchee/deoplete-jedi'                     " Go auto completion
+    " Plug 'uplus/deoplete-solargraph'               " Ruby auto completion
+    Plug 'neomake/neomake'
+
+    " Icons
+    Plug 'ryanoasis/vim-devicons'
+
+    " helm
+    Plug 'towolf/vim-helm'
+call plug#end()
+
+
+" reload configuration when saved
+augroup myvimrchooks
+    au!
+    autocmd bufwritepost init.vim source $MYVIMRC
+augroup END
+
+
+
+
+" *****************************
+" Bootstrap conf
+" *****************************
+"
+set nocompatible
+" set modeline
+
+"" Encoding
+set encoding=utf-8
+set fileencoding=utf-8
+set fileencodings=utf-8
+
+" set term=xterm-256color
+
+"" Searching
+set hlsearch
+set incsearch
+set ignorecase
+set smartcase
+
+"" Encoding
+set bomb
+set binary
+set ttyfast
+
+"" Directories for swp files
+set nobackup
+set noswapfile
+
+set fileformats=unix,dos,mac
+set showcmd
+set shell=/bin/sh
+
+"" no one is really happy until you have this shortcuts
+cnoreabbrev W! w!
+cnoreabbrev Q! q!
+cnoreabbrev Qall! qall!
+cnoreabbrev Wq wq
+cnoreabbrev Wa wa
+cnoreabbrev wQ wq
+cnoreabbrev WQ wq
+cnoreabbrev W w
+cnoreabbrev Q q
+cnoreabbrev Qall qall
+
+
+"" Map leader to ,
+let mapleader=','
+
+" Enable ctrlp caching
+let g:ctrlp_use_caching = 1
+
+" change paste mode with F10 (even in insert mode
+set pastetoggle=<F10>
+
+" disable line highlight as it very slow
+set nocursorline
+
+" enable spell checking
+set spell spelllang=en_us
+
+"" Tabs (vim bootstrap)
+nnoremap <Tab> gt
+nnoremap <S-Tab> gT
+nnoremap <silent> <S-t> :tabnew<CR>
+
+" vim-airline (vim bootstrap)
+let g:airline_powerline_fonts = 0
+" let g:airline_theme = 'powerlineish'
+let g:airline_theme = 'onehalfdark'
+let g:airline#extensions#syntastic#enabled = 1
+let g:airline#extensions#branch#enabled = 1
+let g:airline#extensions#tabline#enabled = 1
+let g:airline#extensions#tagbar#enabled = 1
+
+" NerdTree (vim bootstrap)
+noremap <F3> :NERDTreeToggle<CR>
+
+" Tagbar
+nmap <silent> <F4> :TagbarToggle<CR>
+let g:tagbar_autofocus = 1
+
+"" Git (vim bootstrap)
+noremap <Leader>ga :Gwrite<CR>
+noremap <Leader>gc :Gcommit<CR>
+noremap <Leader>gsh :Gpush<CR>
+noremap <Leader>gll :Gpull<CR>
+noremap <Leader>gs :Gstatus<CR>
+noremap <Leader>gb :Gblame<CR>
+noremap <Leader>gd :Gvdiff<CR>
+noremap <Leader>gr :Gremove<CR>
+
+" Ensime
+noremap <Leader>sb :EnDocBrowse<CR>
+noremap <Leader>sd :EnDeclaration<CR>
+noremap <Leader>ss :EnDeclarationSplit<CR>
+
+"" Copy/Paste/Cut (vim bootstrap)
+if has('unnamedplus')
+  set clipboard=unnamed,unnamedplus
+endif
+
+noremap YY "+y<CR>
+noremap <leader>p "+gP<CR>
+noremap XX "+x<CR>
+
+" To test. From http://superuser.com/questions/10588/how-to-make-cut-copy-paste-in-gvim-on-ubuntu-work-with-ctrlx-ctrlc-ctrlv/189198#189198
+vmap <C-c> "+yi
+vmap <C-x> "+c
+vmap <C-v> c<ESC>"+p
+imap <C-v> <C-r><C-o>+
+
+"" ctrlp.vim (vim bootstrap)
+set wildmode=list:longest,list:full
+set wildignore+=*.o,*.obj,.git,*.rbc,*.pyc,__pycache__
+let g:ctrlp_custom_ignore = '\v[\/](node_modules|target|dist|vendor)|(\.(swp|tox|ico|git|hg|svn))$'
+let g:ctrlp_user_command = "find %s -type f | grep -Ev '"+ g:ctrlp_custom_ignore +"'"
+let g:ctrlp_use_caching = 0
+cnoremap <C-P> <C-R>=expand("%:p:h") . "/" <CR>
+noremap <leader>b :CtrlPBuffer<CR>
+let g:ctrlp_map = '<leader>e'
+let g:ctrlp_open_new_file = 'r'
+
+
+"" Buffer nav
+noremap <leader>z :bp<CR>
+noremap <leader>q :bp<CR>
+noremap <leader>x :bn<CR>
+noremap <leader>w :bn<CR>
+
+"" Close buffer
+noremap <leader>c :bd<CR>
+
+"" Clean search (highlight)
+nnoremap <silent> <leader><space> :noh<cr>
+
+"" Vmap for maintain Visual Mode after shifting > and <
+vmap < <gv
+vmap > >gv
+
+
+"" Move visual block
+vnoremap J :m '>+1<CR>gv=gv
+vnoremap K :m '<-2<CR>gv=gv
+
+" Move to other splits (also for terminal buffers)
+" :tnoremap <A-h> <C-\><C-n><C-w>h
+" :tnoremap <A-j> <C-\><C-n><C-w>j
+" :tnoremap <A-k> <C-\><C-n><C-w>k
+" :tnoremap <A-l> <C-\><C-n><C-w>l
+" :nnoremap <A-h> <C-w>h
+" :nnoremap <A-j> <C-w>j
+" :nnoremap <A-k> <C-w>k
+" :nnoremap <A-l> <C-w>l
+" 
+" :tnoremap <A-Left> <C-\><C-n><C-w>Left
+" :tnoremap <A-Down> <C-\><C-n><C-w>Down
+" :tnoremap <A-Up> <C-\><C-n><C-w>Up
+" :tnoremap <A-Right> <C-\><C-n><C-w>Right
+" :nnoremap <A-Left> <C-w>Left
+" :nnoremap <A-Down> <C-w>Down
+" :nnoremap <A-Up> <C-w>Up
+" :nnoremap <A-Right> <C-w>Right
+
+" UI
+" set background=dark
+let base16colorspace=256
+colorscheme base16-flat
+" colorscheme solarized
+" colorscheme gruvbox
+" colorscheme onehalfdark
+set cc=80
+set termguicolors
+
+" hide grey bar for splits
+" set fillchars=""
+set fillchars+=vert:│
+hi VertSplit ctermbg=NONE guibg=NONE
+
+set linebreak
+set nonumber
+
+set modeline
+
+" Indentation
+set tabstop=2
+set sw=2
+set et
+set ai
+
+
+augroup vimrc-yaml
+  autocmd!
+  autocmd BufNewFile,BufRead *.yml,*.yaml setlocal filetype=yaml
+  autocmd FileType yaml set tabstop=2|set shiftwidth=2|set expandtab
+augroup END
+
+augroup vimrc-go
+  autocmd!
+  au BufNewFile,BufRead *.go setlocal noet ts=4 sw=4 sts=4
+augroup END
+
+" scala
+" autocmd BufWritePost *.scala silent :EnTypeCheck
+" nnoremap <leader>t :EnType<CR>
+function! SyntasticDisableBuffer()
+    let b:syntastic_skip_checks = 1
+    SyntasticReset
+    echo 'Syntastic disabled for this buffer'
+endfunction
+
+augroup vimrc-scala
+  autocmd!
+  autocmd FileType scala call SyntasticDisableBuffer()
+  autocmd BufWritePost *.scala silent :EnTypeCheck
+augroup END
+
+" Syntastic
+
+let g:syntastic_always_populate_loc_list=1
+let g:syntastic_error_symbol='✗'
+let g:syntastic_warning_symbol='⚠'
+let g:syntastic_style_error_symbol = '✗'
+let g:syntastic_style_warning_symbol = '⚠'
+let g:syntastic_auto_loc_list=1
+let g:syntastic_aggregate_errors = 1
+
+let g:syntastic_go_checkers = ['golint', 'govet']
+let g:syntastic_mode_map = { 'mode': 'active', 'passive_filetypes': ['go'] }
+
+" grep.vim
+nnoremap <silent> <leader>f :Rgrep<CR>
+let Grep_Default_Options = '-IR'
+let Grep_Skip_Files = '*.log *.db'
+let Grep_Skip_Dirs = '.git node_modules'
+
+" In the quickfix window, <CR> is used to jump to the error under the
+" cursor, so undefine the mapping there.
+autocmd BufReadPost quickfix nnoremap <buffer> <CR> <CR>
+
+" Go
+set autowrite
+let g:go_list_type = "quickfix"
+let g:go_test_timeout = '10s'
+" let g:go_auto_type_info = 1
+set updatetime=100
+" let g:go_metalinter_autosave = 1
+let g:go_jump_to_error = 1
+let g:go_echo_command_info = 0
+let g:go_fmt_command = "goimports"
+
+let g:go_highlight_extra_types = 1
+let g:go_highlight_operators = 1
+let g:go_highlight_functions = 1
+let g:go_highlight_function_arguments = 1
+let g:go_highlight_function_calls = 1
+let g:go_highlight_types = 1
+let g:go_highlight_fields = 1
+let g:go_highlight_variable_declarations = 1
+let g:go_highlight_variable_assignments = 1
+
+
+
+map <C-b> :cc<CR>
+map <C-n> :cnext<CR>
+map <C-m> :cprevious<CR>
+nnoremap <leader>a :cclose<CR>
+
+" autocmd FileType go nmap <leader>b  <Plug>(go-build)
+autocmd FileType go nmap <leader>or  <Plug>(go-run)
+autocmd FileType go nmap <leader>ot  <Plug>(go-test)
+autocmd FileType go nmap <Leader>oc  <Plug>(go-coverage-toggle)
+autocmd FileType go nmap <Leader>oi  <Plug>(go-info)
+autocmd FileType go nmap <Leader>oe  <Plug>(go-iferr)
+
+" run :GoBuild or :GoTestCompile based on the go file
+function! s:build_go_files()
+  let l:file = expand('%')
+  if l:file =~# '^\f\+_test\.go$'
+    call go#test#Test(0, 1)
+  elseif l:file =~# '^\f\+\.go$'
+    call go#cmd#Build(0)
+  endif
+endfunction
+
+autocmd FileType go nmap <leader>ob :<C-u>call <SID>build_go_files()<CR>
+
+"----------------------------------------------
+" Plugin: Shougo/deoplete.nvim
+"----------------------------------------------
+" if has('nvim')
+    " Enable deoplete on startup
+    let g:deoplete#enable_at_startup = 1
+" endif
+
+" Disable deoplete when in multi cursor mode
+function! Multiple_cursors_before()
+    let b:deoplete_disable_auto_complete = 1
+endfunction
+
+function! Multiple_cursors_after()
+    let b:deoplete_disable_auto_complete = 0
+endfunction
+
+" " When writing a buffer.
+" call neomake#configure#automake('w')
+" " When writing a buffer, and on normal mode changes (after 750ms).
+call neomake#configure#automake('nw', 750)
+" When reading a buffer (after 1s), and when writing.
+" call neomake#configure#automake('rw', 1000)
+
+" neomake
+autocmd BufWritePost * Neomake
+let g:neomake_error_sign   = {'text': '✖', 'texthl': 'NeomakeErrorSign'}
+let g:neomake_warning_sign = {'text': '∆', 'texthl': 'NeomakeWarningSign'}
+let g:neomake_message_sign = {'text': '➤', 'texthl': 'NeomakeMessageSign'}
+let g:neomake_info_sign    = {'text': 'ℹ', 'texthl': 'NeomakeInfoSign'}
+let g:neomake_go_enabled_makers = [ 'go', 'gometalinter' ]
+let g:neomake_go_gometalinter_maker = {
+  \ 'args': [
+  \   '--tests',
+  \   '--enable-gc',
+  \   '--concurrency=3',
+  \   '--fast',
+  \   '-D', 'aligncheck',
+  \   '-D', 'dupl',
+  \   '-D', 'gocyclo',
+  \   '-D', 'gotype',
+  \   '-E', 'errcheck',
+  \   '-E', 'misspell',
+  \   '-E', 'unused',
+  \   '%:p:h',
+  \ ],
+  \ 'append_file': 0,
+  \ 'errorformat':
+  \   '%E%f:%l:%c:%trror: %m,' .
+  \   '%W%f:%l:%c:%tarning: %m,' .
+  \   '%E%f:%l::%trror: %m,' .
+  \   '%W%f:%l::%tarning: %m'
+  \ }
+
+" Gonvim
+let g:gonvim_draw_statusline = 1
+
+" Dismiss deoplete popup with enter
+" inoremap <expr> <CR> (pumvisible() ? "\<c-y>\<cr>" : "\<CR>")
+
+" Language server
+"
+" Required for operations modifying multiple buffers like rename.
+set hidden
+
+let g:LanguageClient_serverCommands = {
+    \ 'crystal': ['scry'],
+    \ }
+    " \ 'rust': ['rustup', 'run', 'nightly', 'rls'],
+    " \ 'javascript': ['javascript-typescript-stdio'],
+    " \ 'javascript.jsx': ['tcp://127.0.0.1:2089'],
+    " \ 'python': ['pyls'],
+    " \ }
+
+nnoremap <F5> :call LanguageClient_contextMenu()<CR>
+" Or map each action separately
+nnoremap <silent> K :call LanguageClient#textDocument_hover()<CR>
+nnoremap <silent> gd :call LanguageClient#textDocument_definition()<CR>
+nnoremap <silent> <F2> :call LanguageClient#textDocument_rename()<CR>