.vimrc

" Enable syntax highlighting
syntax on
" Don’t create backups when editing files in certain directories
set backupskip=/tmp/*,/private/tmp/*
" Make Vim more useful
set nocompatible
" 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=','
" Don’t add empty newlines at the end of files
set binary
set noeol
" Make tabs as wide as two spaces
" set tabstop=2
" 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
" Highlight current line
set cursorline
" 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

" Base16 shell colours
if filereadable(expand("~/.vimrc_background"))
	let base16colorspace=256
	source ~/.vimrc_background
endif

" Airline configs
" Enable the list of buffers
let g:airline#extensions#tabline#enabled=1
" Show just the filename
let g:airline#extensions#tabline#fnamemod=':t'

" NERDTree
let NERDTreeShowHidden=1
autocmd StdinReadPre * let s:std_in=1
autocmd VimEnter * if argc() == 0 && !exists('s:std_in') | NERDTree | endif
let NERDTreeMinimalUI=1
let NERDTreeDirArrows=1
let NERDTreeQuitOnOpen=1
autocmd bufenter * if (winnr('$') == 1 && exists('b:NerdTreeType') && b:NERDTreeType == 'primary') | q | endif