.vimrc

" Make vim more useful
set nocompatible
" Enhance command-line completion
set wildmenu
" Allow cursor keys in insert mode
set esckeys
" 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

" Enable line numbers
set number
" Enable syntax highlighting
syntax on
" Highlight current line
set cursorline
" 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
" Use relative line numbers
set relativenumber
au BufReadPost * set relativenumber
" Start scrolling three lines before the horizontal window border
set scrolloff=3

" 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>