My Vim resource configuration file for the xub system

.vimrc

set nocompatible
syntax on
set number
set ruler
colorscheme one
set autoindent
set hlsearch " enable search highlighting
set wrap
set title
set shiftround
set ignorecase
set incsearch
set smartcase
set cursorline
set mouse=a " Enable mouse
set background=dark
set wildmenu
set lazyredraw

" Diff function (https://stackoverflow.com/questions/749297/can-i-see-changes-before-i-save-my-file-in-vim/22360650)
function! s:DiffWithSaved()
  let filetype=&ft
  diffthis
  vnew | r # | normal! 1Gdd
  diffthis
  exe "setlocal bt=nofile bh=wipe nobl noswf ro ft=" . filetype
endfunction
com! DiffSaved call s:DiffWithSaved()