My (neo) vim configuration on Mac OS

.zshrc

# Replace vim with neo vim
if type nvim > /dev/null 2>&1; then
  alias vim='nvim'
fi

coc-settings.json

{
  "languageserver": {
    "go": {
      "command": "gopls",
      "rootPatterns": ["go.mod"],
      "trace.server": "verbose",
      "filetypes": ["go"]
    },
    "bash": {
      "command": "bash-language-server",
      "args": ["start"],
      "filetypes": ["sh"],
      "ignoredRootPaths": ["~"]
    },
    "ccls": {
      "command": "ccls",
      "filetypes": ["c", "cpp", "cuda", "objc", "objcpp"],
      "rootPatterns": [".ccls-root", "compile_commands.json"],
      "initializationOptions": {
        "cache": {
          "directory": ".ccls-cache"
        },
        "client": {
          "snippetSupport": true
        },
        "clang": {
          "resourceDir": "/Library/Developer/CommandLineTools/usr/lib/clang/12.0.0",
          "extraArgs": [
            "-isystem",
            "/Library/Developer/CommandLineTools/usr/include/c++/v1",
            "-I",
            "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/"--------
          ]
        }
      }
    }
  }
}

init.vim

syntax on
set number
set relativenumber
set cmdheight=1         " Give more space for displaying message.
set ruler               " Show the line and column numbers of the cursor.
set formatoptions+=o    " Continue comment marker in new lines.
set textwidth=0         " Hard-wrap long lines as you type them.
set modeline            " Enable modeline.
set linespace=0         " Set line-spacing to minimum.
set nojoinspaces        " Prevents inserting two spaces after punctuation on a join (J)
" More natural splits
set splitbelow          " Horizontal split below current.
set splitright          " Vertical split to right of current.
if !&scrolloff
  set scrolloff=3       " Show next 3 lines while scrolling.
endif
if !&sidescrolloff
  set sidescrolloff=5   " Show next 5 columns while side-scrolling.
endif
set display+=lastline
set nostartofline       " Do not jump to first character with page commands.
set noerrorbells                " No beeps
set backspace=indent,eol,start  " Makes backspace key more powerful.
set showcmd                     " Show me what I'm typing
set showmode                    " Show current mode.
set noswapfile                  " Don't use swapfile
set nobackup            	" Don't create annoying backup files
set encoding=utf-8              " Set default encoding to UTF-8
set autowrite                   " Automatically save before :next, :make etc.
set autoread                    " Automatically reread changed files without asking me anything
set laststatus=2
set fileformats=unix,dos,mac    " Prefer Unix over Windows over OS 9 formats
set showmatch                   " Do not show matching brackets by flickering
set incsearch                   " Shows the match while typing
set hlsearch                    " Highlight found searches
set ignorecase                  " Search case insensitive...
set smartcase                   " ... but not when search pattern contains upper case characters
set autoindent
set tabstop=4 shiftwidth=4 expandtab
set gdefault            " Use 'g' flag by default with :s/foo/bar/.
set magic               " Use 'magic' patterns (extended regular expressions).
set path+=/usr/local/include/c++/11.1.0

" Use <C-L> to clear the highlighting of :set hlsearch.
if maparg('<C-L>', 'n') ==# ''
  nnoremap <silent> <C-L> :nohlsearch<CR><C-L>
endif

" Search and Replace
nmap <Leader>s :%s//g<Left><Left>

" Leader key is like a command prefix.
let mapleader='z'
let maplocalleader='\'

let g:python_host_prog="/usr/local/bin/python2.7"

let g:session_autosave = 'yes'
let g:session_autoload = 'yes'
let g:session_default_to_last = 1

" set cursorcolumn
nmap <Space> <PageDown>
vmap <BS> x

" cd ~/.config/nvim/spell
" wget http://ftp.vim.org/vim/runtime/spell/pt.utf-8.spl
" set spell spelllang=pt_pt
" zg to add word to word list
" zw to reverse
" zug to remove word from word list
" z= to get list of possibilities
" set spellfile=~/.config/nvim/spellfile.add
set nospell

" Plugins here
call plug#begin('~/.config/nvim/plugged')
Plug 'vim-airline/vim-airline'
Plug 'vim-airline/vim-airline-themes'
Plug 'Chiel92/vim-autoformat'
Plug 'scrooloose/nerdtree'
Plug 'terryma/vim-multiple-cursors'
Plug 'dracula/vim', { 'as': 'dracula' }
Plug 'neoclide/coc.nvim', {'branch': 'release'}
Plug 'chun-yang/auto-pairs'
call plug#end()

" Tell Vim which characters to show for expanded TABs,
" trailing whitespace, and end-of-lines. VERY useful!
if &listchars ==# 'eol:$'
  " set listchars=tab:>\ ,trail:-,extends:>,precedes:<,nbsp:+
  set listchars=tab:>\ ,extends:>,precedes:<,nbsp:+
endif

" nerdtree config
map <C-n> :NERDTreeToggle<CR>

" airline settings
let g:airline#extensions#tabline#enabled = 2
let g:airline#extensions#tabline#fnamemod = ':t'
let g:airline#extensions#tabline#left_sep = ' '
let g:airline#extensions#tabline#left_alt_sep = '|'
let g:airline#extensions#tabline#right_sep = ' '
let g:airline#extensions#tabline#right_alt_sep = '|'
let g:airline_powerline_fonts=1
let g:airline_left_sep = ' '
let g:airline_left_alt_sep = '|'
let g:airline_right_sep = ' '
let g:airline_right_alt_sep = '|'
let g:airline_powerline_fonts=1
let g:airline_theme='dracula'

" Multicursor
let g:multi_cursor_use_default_mapping=0
let g:multi_cursor_next_key='<C-e>'
let g:multi_cursor_quit_key='<Esc>'
let g:multi_cursor_quit_key='<Esc>'

" Other
set mouse=
set list

" Theme
set termguicolors
let g:dracula_colorterm=0
colorscheme dracula
let NERDTreeIgnore = ['_site']

" Buffer handling
nmap L :let &number=1-&number<CR>
nmap <leader>l :bnext<CR>
nmap <c-h> :bprevious<CR>
nmap <leader>bq :bp <BAR> bd #<CR>
nmap <leader>bl :ls<CR>
nmap <leader>0 :set invnumber<CR>
" map :q to byffer delete
" http://stackoverflow.com/questions/7513380/vim-change-x-function-to-delete-buffer-instead-of-save-quit
cnoreabbrev <expr> q getcmdtype() == ":" && (getcmdline() == 'q' && len(filter(range(1, bufnr('$')), 'buflisted(v:val)')) > 1) ? 'bd' : 'q'

" Use <Tab> for CoC trigger completion
function! s:check_back_space() abort
  let col = col('.') - 1
  return !col || getline('.')[col - 1]  =~ '\s'
endfunction

inoremap <silent><expr> <Tab>
      \ pumvisible() ? "\<C-n>" :
      \ <SID>check_back_space() ? "\<Tab>" :
      \ coc#refresh()

Here's the screenshot.