vimrc.useful

set nocompatible                                  " get out of vi-compatible mode
syntax on
scriptencoding utf-8
filetype plugin indent on

set autoindent
set smartindent

set backup                                        " make backup files
set backupdir=~/.vim/backup                       " backup directory
set directory=~/.vim/swap                         " swap directory
set autochdir                                     " switch to current file directory automatically
set backspace=indent,eol,start                    " make backspace more flexible
set hidden                                        " change buffers without saving

set wildmenu                                      " turn on cli completion wild style
set wildmode=list:longest                         " turn on wild mode huge list
set wildignore=*.jpg,*.png,.git                   " ignore these file extensions

set gdefault                                      " Add the g flag to search/replace by default

set incsearch                                     " highlight as you type your search
set hlsearch                                      " highlight search
set ignorecase                                    " case insensitive by default
set smartcase                                     " if there are caps, go case-sensitive
set scrolloff=10                                  " keep 10 lines for scope
set showmatch                                     " show matching brackets

" Backwards compability {

if version >= 703
  set undodir=~/.vim/undo                           " undo directory
  set undofile                                      " store all undos
  set undolevels=1000                               " remember 1000 undos
  set undoreload=10000                              " save up to 10000 lines for undo on a buffer reload
endif

" }
" Folding {

set foldlevelstart=0
set foldmarker={,}                                " fold C style code
set foldmethod=marker                             " fold based on indent
set foldlevel=0                                   " don't autofold
set foldnestmax=10                                " deepest fold is 10
set foldopen=block,hor,mark,percent,quickfix,tag  " what movements open folds

" Space to toggle folds
nnoremap <space> zA
vnoremap <space> zA

" Make zO recursively open whatever top level fold we're in, no matter where the
" cursor happens to be.
nnoremap zO zCzO

" Use <leader>z to focus the current fold
nnoremap <leader>z zMzvzz

" }

au BufWinLeave * silent! mkview   " make vim save view state,folds,cursor,etc
au BufWinEnter * silent! loadview " make vim load view state,folds,cursor,etc