My Vimrc config

.vimrc

call plug#begin('~/.vim/plugged')

Plug 'neoclide/coc.nvim', {'branch': 'release'}
Plug 'scrooloose/nerdtree'
"Plug 'tsony-tsonev/nerdtree-git-plugin'
Plug 'Xuyuanp/nerdtree-git-plugin'
Plug 'tiagofumo/vim-nerdtree-syntax-highlight'
Plug 'airblade/vim-gitgutter'
Plug 'junegunn/fzf', { 'do': { -> fzf#install() } }
Plug 'junegunn/fzf.vim'
Plug 'scrooloose/nerdcommenter'
Plug 'itchyny/lightline.vim'
Plug 'tpope/vim-fugitive'
Plug 'nvie/vim-flake8'
Plug 'ryanoasis/vim-devicons'
Plug 'morhetz/gruvbox'
"Plug 'prettier/vim-prettier', { 'do': 'yarn install' }

" Initialize plugin system
call plug#end()

if exists('+colorcolumn')
  set colorcolumn=80
else
  au BufWinEnter * let w:m2=matchadd('ErrorMsg', '\%>80v.\+', -1)
endif

let g:NERDTreeGitStatusWithFlags = 1
let g:NERDTreeIgnore = ['^node_modules$', '^venv$']

" Use the Solarized Dark theme
set background=dark
colorscheme gruvbox
let g:solarized_termtrans=1

" Make Vim more useful
set nocompatible
" Use the OS clipboard by default (on versions compiled with `+clipboard`)
set clipboard=unnamed
" Enhance command-line completion
set wildmenu
" Allow cursor keys in insert mode
set esckeys
" Allow backspace in insert mode
set backspace=indent,eol,start
" Optimize for fast terminal connections
set ttyfast
" Add the g flag to search/replace by default
set gdefault
" Use UTF-8 without BOM
set encoding=utf-8 nobomb
" Change mapleader
let mapleader=","

inoremap jk <ESC>
nmap ,n :NERDTreeFind<CR>
nmap ,m :NERDTreeToggle<CR>
vmap ++ <plug>NERDCommenterToggle
nmap ++ <plug>NERDCommenterToggle

" Clear search highlights
map <silent> <leader><cr> :noh<cr>

" fzf key bindings
nmap <Leader>f :GFiles<CR>
nmap <Leader>b :Buffers<CR>
" Don’t add empty newlines at the end of files
set binary
set noeol
" Centralize backups, swapfiles and undo history
set backupdir=~/.vim/backups
set directory=~/.vim/swaps
if exists("&undodir")
	set undodir=~/.vim/undo
endif

" Don’t create backups when editing files in certain directories
set backupskip=/tmp/*,/private/tmp/*

" Respect modeline in files
set modeline
set modelines=4
" Enable per-directory .vimrc files and disable unsafe commands in them
set exrc
set secure
" Enable line numbers
set number
" Enable syntax highlighting
syntax on
" Highlight current line
set cursorline
set smarttab
set cindent
set shiftwidth=2
set expandtab
" Make tabs as wide as two spaces
set tabstop=2
" Show “invisible” characters
set lcs=tab:▸\ ,trail:·,eol:¬,nbsp:_
set list
" Highlight searches
set hlsearch
" Ignore case of searches
set ignorecase
" Highlight dynamically as pattern is typed
set incsearch
" Always show status line
set laststatus=2
" Enable mouse in all modes
set mouse=a
" Disable error bells
set noerrorbells
" Don’t reset cursor to start of line when moving around.
set nostartofline
" Show the cursor position
set ruler
" Don’t show the intro message when starting Vim
set shortmess=atI
" Show the current mode
set showmode
" Show the filename in the window titlebar
set title
" Show the (partial) command as it’s being typed
set showcmd
" Use relative line numbers
if exists("&relativenumber")
	set relativenumber
	au BufReadPost * set relativenumber
endif
" Start scrolling three lines before the horizontal window border
set scrolloff=3

" " always show signcolumns
set signcolumn=yes

" Use tab for trigger completion with characters ahead and navigate.
" Use command ':verbose imap <tab>' to make sure tab is not mapped by other plugin.
inoremap <silent><expr> <TAB>
      \ pumvisible() ? "\<C-n>" :
      \ <SID>check_back_space() ? "\<TAB>" :
      \ coc#refresh()
inoremap <expr><S-TAB> pumvisible() ? "\<C-p>" : "\<C-h>"

" Remap keys for gotos
nmap <silent> gd <Plug>(coc-definition)
nmap <silent> gy <Plug>(coc-type-definition)
nmap <silent> gi <Plug>(coc-implementation)
nmap <silent> gr <Plug>(coc-references)
" Use `[g` and `]g` to navigate diagnostics
nmap <silent> [g <Plug>(coc-diagnostic-prev)
nmap <silent> ]g <Plug>(coc-diagnostic-next)

" let g:gitgutter_sign_allow_clobber = 1
" highlight link GitGutterChangeLineNr Underlined

" let g:lightline = {
"      \ 'colorscheme': 'solarized dark',
"      \ 'active': {
"      \   'left': [ [ 'mode', 'paste' ],
"      \             [ 'gitbranch', 'readonly', 'filename', 'modified' ] ]
"      \ },
"      \ 'component_function': {
"      \   'gitbranch': 'FugitiveHead'
"      \ },
"      \ }


" Use K to show documentation in preview window
nnoremap <silent> K :call <SID>show_documentation()<CR>

function! s:show_documentation()
  if (index(['vim','help'], &filetype) >= 0)
    execute 'h '.expand('<cword>')
  else
    call CocAction('doHover')
  endif
endfunction

" Highlight symbol under cursor on CursorHold
" autocmd CursorHold * call CocActionAsync('highlight')

" Highlight currently open buffer in NERDTree
" autocmd BufEnter * call SyncTree()
nnoremap <silent> <space>a  :<C-u>CocList diagnostics<cr>
" Find symbol of current document
nnoremap <silent> <space>o  :<C-u>CocList outline<cr>
" Search workspace symbols
nnoremap <silent> <space>s  :<C-u>CocList -I symbols<cr>

" Strip trailing whitespace (,ss)
function! StripWhitespace()
	let save_cursor = getpos(".")
	let old_query = getreg('/')
	:%s/\s\+$//e
	call setpos('.', save_cursor)
	call setreg('/', old_query)
endfunction
noremap <leader>ss :call StripWhitespace()<CR>
" Save a file as root (,W)
noremap <leader>W :w !sudo tee % > /dev/null<CR>

" Automatic commands
if has("autocmd")
	" Enable file type detection
	filetype on
	filetype plugin on
	" Treat .json files as .js
	autocmd BufNewFile,BufRead *.json setfiletype json syntax=javascript
	" Treat .md files as Markdown
	autocmd BufNewFile,BufRead *.md setlocal filetype=markdown
endif

let macvim_skip_colorscheme = 1