vimrc

" ================ General Config ====================
"
set number                      "Line numbers are good
set relativenumber              "Relative numbers are even better
set numberwidth=5
set backspace=indent,eol,start  "Allow backspace in insert mode
set history=1000                "Store lots of :cmdline history
set showcmd                     "Show incomplete cmds down the bottom
set showmode                    "Show current mode down the bottom
set gcr=a:blinkon0              "Disable cursor blink
set visualbell                  "No sounds
set autoread                    "Reload files changed outside vim
set wildmenu
set wildmode=full
set laststatus=2
set scrolloff=3
set mouse=a

" This makes vim act like all other editors, buffers can
" exist in the background without being in a window.
" http://items.sjbach.com/319/configuring-vim-right
set hidden

" ================ Persistent Undo ==================
" Keep undo history across sessions, by storing in file.
set undofile

set directory=~/.vim/swapfiles

" ================ Indentation ======================

if has('gui_running')
  set guifont=FuraCode\ Nerd\ Font\ Mono:h14
  set linespace=4
endif

set autoindent
set smartindent
set smarttab
set shiftwidth=2
set softtabstop=2
set tabstop=2
set expandtab

filetype plugin on
filetype indent on

" Display tabs and trailing spaces visually
"set list listchars=tab:\ \ ,trail:·

" set nowrap       "Don't wrap lines
set linebreak    "Wrap lines at convenient points

set breakindent
"set showbreak=\\\\\

set ruler
syntax enable

set encoding=utf8

set ffs=unix,dos,mac

" === Plugins ===

" Plugin automation
if empty(glob('~/.vim/autoload/plug.vim'))
  silent !curl -fLo ~/.vim/autoload/plug.vim --create-dirs
        \ https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
  autocmd VimEnter * PlugInstall --sync | source $MYVIMRC
endif

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

Plug 'arcticicestudio/nord-vim'
Plug 'itchyny/lightline.vim'
Plug 'christoomey/vim-tmux-navigator'
Plug 'tmux-plugins/vim-tmux-focus-events'
Plug 'roxma/vim-tmux-clipboard'
Plug 'tpope/vim-endwise'
Plug 'tpope/vim-eunuch'
Plug 'tpope/vim-fugitive'
Plug 'tpope/vim-rhubarb'
Plug 'airblade/vim-gitgutter'
Plug 'tpope/vim-surround'
Plug 'jiangmiao/auto-pairs'
Plug 'vim-ruby/vim-ruby'
Plug 'tpope/vim-rails'
Plug 'tpope/vim-commentary'
Plug 'junegunn/fzf', { 'do': { -> fzf#install() }}
Plug 'junegunn/fzf.vim'
Plug 'SirVer/ultisnips'
Plug 'honza/vim-snippets'
Plug 'hashivim/vim-terraform'
Plug 'psliwka/vim-smoothie'
Plug 'ojroques/vim-scrollstatus'
Plug 'ryanoasis/vim-devicons'
Plug 'preservim/nerdtree'
Plug 'Xuyuanp/nerdtree-git-plugin'
call plug#end()

colorscheme nord
let g:nord_italic = 1
let g:nord_underline = 1
let g:nord_italic_comments = 1
let g:nord_cursor_line_number_background = 1

" Supress python errors I don't need
" see https://github.com/SirVer/ultisnips/issues/996#issuecomment-403347577
if has('python3')
  silent! python3 1
endif

" Delete trailing white space on save, useful for Python and CoffeeScript ;)
func! DeleteTrailingWS()
  exe "normal mz"
  %s/\s\+$//ge
  exe "normal `z"
endfunc
autocmd BufWrite *.py :call DeleteTrailingWS()
autocmd BufWrite *.coffee :call DeleteTrailingWS()
autocmd BufWrite *.rb :call DeleteTrailingWS()

" Always start in line 1 of Git commit messages
au FileType gitcommit au! BufEnter COMMIT_EDITMSG call setpos('.', [0, 1, 1, 0])
" Limit commit messages to 72 character lines
au BufRead,BufNewFile COMMIT_EDITMSG setlocal textwidth=72

" With a map leader it's possible to do extra key combinations
" " like <leader>w saves the current file
nnoremap <Space> <nop>
let mapleader = "\<Space>"
let g:mapleader = " "

" Yank text to the OS X clipboard
noremap <leader>y "*y
noremap <leader>yy "*Y

" Preserve indentation while pasting text from the OS X clipboard
noremap <leader>p :set paste<CR>:put  *<CR>:set nopaste<CR>

" Add a shortcut for netrw
nmap <silent> <Leader>e :Explore<CR>

" Add short for save file
nnoremap <Leader>w :w<CR>

" Fuzzy helpers
nmap ; :Buffers<CR>
nmap <Leader>f :Files<CR>
nmap <Leader>F :GFiles<CR>
nmap <Leader>r :Tags<CR>
nmap <Leader>a :Rg<CR>
"nmap <Leader>h :History<CR>

" Window management
nnoremap <silent> <leader>s :split<CR>
nnoremap <silent> <leader>v :vsplit<CR>
nnoremap <silent> <leader>q :close<CR>

" Zoom a split
noremap <silent> <leader>z :tab split<CR>

" Seamlessly navigate Vim splits and tmux panes
" from https://bluz71.github.io/2017/06/14/a-few-vim-tmux-mappings.html
noremap <C-h> <C-w>h
noremap <C-j> <C-w>j
noremap <C-k> <C-w>k
noremap <C-l> <C-w>l

if &term == 'screen-256color'
  let g:tmux_navigator_no_mappings = 1
  nnoremap <silent> <C-h> :TmuxNavigateLeft<cr>
  nnoremap <silent> <C-j> :TmuxNavigateDown<cr>
  nnoremap <silent> <C-k> :TmuxNavigateUp<cr>
  nnoremap <silent> <C-l> :TmuxNavigateRight<cr>
endif

" Generic helpers
cnoremap w!! execute 'silent! write !sudo tee % >/dev/null' <bar> edit!

" Fugitive mapping
nmap <leader>gb :Gblame<cr>
nmap <leader>gc :Gcommit<cr>
nmap <leader>gd :Gdiff<cr>
nmap <leader>gg :Ggrep
nmap <leader>gl :Glog<cr>
nmap <leader>gp :Git pull<cr>
nmap <leader>gP :Git push<cr>
nmap <leader>gs :Gstatus<cr>
nmap <leader>gw :Gbrowse<cr>

" Snippet configuration
" Trigger configuration. Do not use <tab> if you use https://github.com/Valloric/YouCompleteMe.
let g:UltiSnipsExpandTrigger="<tab>"
let g:UltiSnipsJumpForwardTrigger="<c-b>"
let g:UltiSnipsJumpBackwardTrigger="<c-z>"

" If you want :UltiSnipsEdit to split your window.
let g:UltiSnipsEditSplit="vertical"

" my snippets
let g:UltiSnipsSnippetDirectories=[$HOME.'/.vim/UltiSnips']

let g:scrollstatus_size = 25

let g:lightline = {
      \ 'colorscheme': 'nord',
      \ 'active': {
      \   'left': [ [ 'mode', 'paste' ],
      \             [ 'gitbranch', 'readonly', 'filename', 'modified' ],
      \             [ 'scroll_status' ] ],
      \   'right': [ [ 'linter_checking', 'linter_errors', 'linter_warnings', 'linter_ok' ],
      \              [ 'lineinfo' ],
      \              [ 'filetype' ]
      \            ]
      \ },
      \ 'component_function': {
      \   'gitbranch': 'fugitive#head',
      \   'scroll_status': 'ScrollStatus'
      \ },
      \ }

let NERDTreeShowHidden=1

" Check if NERDTree is open or active
function! IsNERDTreeOpen()
  return exists("t:NERDTreeBufName") && (bufwinnr(t:NERDTreeBufName) != -1)
endfunction

" Call NERDTreeFind iff NERDTree is active, current window contains a modifiable
" file, and we're not in vimdiff
function! SyncTree()
  if &modifiable && IsNERDTreeOpen() && strlen(expand('%')) > 0 && !&diff
    NERDTreeFind
    wincmd p
  endif
endfunction

" Highlight currently open buffer in NERDTree
autocmd BufEnter * call SyncTree()

function! ToggleNerdTree()
  set eventignore=BufEnter
  NERDTreeToggle
  set eventignore=
endfunction
nmap <C-n> :call ToggleNerdTree()<CR>