.vimrc

" Make Vim more useful
" http://stevelosh.com/blog/2010/09/coming-home-to-vim/
set nocompatible
" For Pathogen
runtime bundle/vim-pathogen.vim/autoload/pathogen.vim
execute pathogen#infect()
" Enable file type detection and plugins
filetype plugin on
" Enable syntax highlighting
syntax enable
" set default background
set background=dark
" toggle background color
nnoremap <leader>b :let &background = ( &background == "dark"? "light" : "dark" )<CR>
" set color scheme
colorscheme solarized

" Use the OS clipboard by default (on versions compiled with `+clipboard`)
set clipboard=unnamed
" Enhance command-line completion
set wildmenu
set wildmode=list:longest
" Allow cursor keys in insert mode
set esckeys
" 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 noeol
"set binary
" Centralize backups, swapfiles and undo history
set backupdir=~/.vim/backups
set directory=~/.vim/swaps
if exists("&undodir")
  set undodir=~/.vim/undo
endif
" persistent undo
"set undofile
"maximum number of changes that can be undone
"set undolevels=1000
"maximum number lines to save for undo on a buffer reload
"set undoreload=10000
" Respect modeline in files
" set modeline
" set modelines=4
set modelines=0
" Enable per-directory .vimrc files and disable unsafe commands in them
set exrc
set secure
" Highlight current line
set cursorline
" Make tabs as wide as 2 spaces, use spaces instead of tab char
set tabstop=2
set shiftwidth=2
set softtabstop=2
set expandtab
" autoindent
set autoindent
" Toggle autoindent
nmap <leader>ai :set invai ai?<CR>
" toggle paste mode
set pastetoggle=<f2>
" Toggle paste mode
" (prefer this over 'pastetoggle' to echo current state)
nmap <leader>p :setlocal paste! paste?<CR>
" visual bell
set visualbell
" Highlight searches
set hlsearch
" Ignore case of search
set ignorecase
set smartcase
" Highlight dynamically as pattern is typed
set incsearch
" Enable mouse in all modes
"set mouse=a
set mouse=
" 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 
set titlestring=vim:\ %F 
" Set title back to normal on exit of vim
set titleold="" 
" Show the (partial) command as it’s being typed
set showcmd
" Start scrolling three lines before the horizontal window border
set scrolloff=3
set wrap linebreak nolist
set textwidth=79
set formatoptions=qrn1
set colorcolumn=85

" clear search highlights
nnoremap <leader><space> :noh<CR>
" match bracket pairs
nnoremap <tab> %
vnoremap <tab> %
" make saving easier
nmap <leader>w :w!<CR>
" strip all trailing whitespace
nnoremap <leader>W :%s/\s\+$//<CR>:let @/=''<CR>
" Scroll the viewport faster
nnoremap <C-e> 3<C-e>
nnoremap <C-y> 3<C-y>
"quicker escaping from insert mode
inoremap jj <ESC>
" moving around split windows easier
nnoremap <C-h> <C-w>h
nnoremap <C-j> <C-w>j
nnoremap <C-k> <C-w>k
nnoremap <C-l> <C-w>l
" Center screen around cursor with SPACE
nmap <space> zz
" re-hardwrap paragraphs
nnoremap <leader>q gqip
" NERDTree toggle
map <leader>f :let NERDTreeQuitOnOpen = 1<bar>NERDTreeToggle<CR>
map <leader>F :let NERDTreeQuitOnOpen = 0<bar>NERDTreeToggle<CR>

" Ack
" let g:ackprg="<custom-ack-path-goes-here> -H --nocolor --nogroup --column"
" Ack shortcut
nnoremap <leader>a :Ack

" http://vimdoc.sourceforge.net/htmldoc/diff.html#:DiffOrig
" DiffOrig, when the prompt comes up you hit 'recover', and then type :DiffOrig.
" Then when you're done you save the buffer. Then to delete the swap file
" (because it'll still linger and bug you next time), you just type :e,
" which brings up the prompt again, and you can hit 'delete'
" http://stackoverflow.com/questions/63104/smarter-vim-recovery
" command! DiffOrig vert new | set bt=nofile | r # | 0d_ | diffthis | wincmd p | diffthis

" http://stackoverflow.com/questions/6426154/taking-a-quick-look-at-difforig-then-switching-back
command! DiffOrig let g:diffline = line('.') | vert new | set bt=nofile | r # | 0d_ | diffthis | :exe "norm! ".g:diffline."G" | wincmd p | diffthis | wincmd p
map <Leader>do :DiffOrig<CR>
map <leader>dc :q<CR>:diffoff!<CR>:e<CR>

"toggle line numbers
nnoremap <leader>n :set invnumber<CR>
nnoremap <leader>nn :set invrelativenumber<CR>
"toggle invisible characters
set lcs=tab:▸\ ,trail:·,eol:¬,nbsp:_
nnoremap <leader>i :set invlist<CR>

" Session option management
" NOTE: I used to turn options off, but it causes issues with syntax highlighting
" when sourcing session files in session.vim.  So I updated session.vim to source the vimrc on VimEnter.
" If this becomes an issue, see this thread for another possible solution:
" http://stackoverflow.com/questions/5142099/auto-save-vim-session-on-quit-and-auto-reload-session-on-start/6052704#6052704
" set ssop-=options    " do not store global and local values in a session
set ssop-=folds      " do not store folds

" quick access to edit vimrc
nnoremap <leader>ev :vertical topleft split  $MYVIMRC<CR>

"autocommands
if has("autocmd")
  "Auto source(reload) vimrc on save... be careful with errors :)
  "http://www.bestofvim.com/tip/auto-reload-your-vimrc/
  augroup reload_vimrc " {
    autocmd!
    autocmd BufWritePost $MYVIMRC source $MYVIMRC
  augroup END " }
  augroup myAutoCommands " {
    autocmd!
    " auto save when switching between windows
    au WinLeave ?* :wa
    " Treat .json files as .js
    au BufNewFile,BufRead *.json setfiletype json syntax=javascript
    " Open NERDTree if no file is specified
    " au vimenter * if !argc() | NERDTree | endif
    " close vim if only thing open is NERDtree
    au bufenter * if (winnr("$") == 1 && exists("b:NERDTreeType") && b:NERDTreeType == "primary") | q | endif
  augroup END " }
endif

" Don't use nerdtree when opening vim
let g:NERDTreeHijackNetrw=0

"session management
source ~/.vim/session.vim

"hack to add small margin on left
"set foldcolumn=1

nnoremap <Leader>m :w <BAR> !lessc % > %:t:r.css<CR><space>

let g:airline_theme='solarized'
"let g:airline_solarized_dark_inactive_border = 1
let g:airline_powerline_fonts = 1
let g:airline#extensions#tabline#enabled = 1
let g:airline#extensions#tabline#fnamemod = ':t'
"per airline docs:
"The default setting of 'laststatus' is for the statusline to not appear until
"a split is created. If you want it to appear all the time, add the following
"to your vimrc: set laststatus=2

" Always show status line
set laststatus=2

"buffers
nmap <leader>T :enew<cr>
nmap <leader>l :bnext<CR>
nmap <leader>h :bprevious<CR>
nmap <leader>bq :bp <BAR> bd #<CR>
nmap <leader>bl :ls<CR>