.vimrc

set encoding=utf-8
set nocompatible                  " Must come first because it changes other options.

syntax enable                     " Turn on syntax highlighting.

set tabstop=2                     " Global tab width.
set shiftwidth=2                  " And again, related.
set expandtab                     " Use spaces instead of tabs
set softtabstop=2                 " Makes the spaces feel like real tabs

set autoindent
set backspace=indent,eol,start    " Intuitive backspacing.

set showmatch
set incsearch                     " Highlight matches as you type.
set hlsearch                      " Highlight matches.

set showcmd                       " Display incomplete commands.
set showmode                      " Display the mode you're in.

set hidden                        " Handle multiple buffers better.

set wildmenu                      " Enhanced command line completion.
set wildmode=list:longest         " Complete files like a shell.
set wildignore+=*/tmp/*,*.so,*.swp,*.zip,*.scssc,*.sassc

set ignorecase                    " Case-insensitive searching.
set smartcase                     " But case-sensitive if expression contains a capital letter.

set number                        " Show line numbers.
set ruler                         " Show cursor position.

set wrap                          " Turn on line wrapping.
set scrolloff=3                   " Show 3 lines of context around the cursor.

set title                         " Set the terminal's title

set visualbell                    " No beeping.

set nobackup                      " Don't make a backup before overwriting a file.
set nowritebackup                 " And again.

set laststatus=2                  " Show the status line all the time
set listchars=tab:▸\ ,eol:¬

set t_Co=256
set background=dark
colorscheme vividchalk

let g:bufferline_echo = 0         " Don't print bufferline bar

" Open new split panes to right and bottom, which feels more natural
set splitbelow
set splitright

"" Load plugins

if has('vim_starting')
  set runtimepath+=~/.vim/bundle/neobundle.vim/
endif

call neobundle#begin(expand('~/.vim-bundle/'))

" Let NeoBundle manage NeoBundle
NeoBundleFetch 'Shougo/neobundle.vim'

NeoBundle 'Shougo/vimproc', {
      \ 'build' : {
      \     'windows' : 'make -f make_mingw32.mak',
      \     'cygwin' : 'make -f make_cygwin.mak',
      \     'mac' : 'make -f make_mac.mak',
      \     'unix' : 'make -f make_unix.mak',
      \    },
      \ }
NeoBundle 'mileszs/ack.vim' " make sure you have ack-grep >=2.0
NeoBundle 'tpope/vim-commentary'
NeoBundle 'vim-ruby/vim-ruby'
NeoBundle 'bling/vim-bufferline'
NeoBundle 'moll/vim-bbye'
NeoBundle 'scrooloose/nerdtree'
call neobundle#end()
set cursorline

filetype plugin indent on         " Turn on file type detection.

" Syntax of these languages is fussy over tabs Vs spaces
autocmd FileType make setlocal ts=8 sts=8 sw=8 noexpandtab
autocmd FileType yaml setlocal ts=2 sts=2 sw=2 expandtab

" Customisations based on house-style (arbitrary)
autocmd FileType html setlocal ts=2 sts=2 sw=2 expandtab
autocmd FileType css setlocal ts=2 sts=2 sw=2 expandtab
autocmd FileType javascript setlocal ts=2 sts=2 sw=2 expandtab

"" Mappings
imap ;; <Esc>

" Disable arroy keys
nnoremap <up> <nop>
nnoremap <down> <nop>
nnoremap <left> <nop>
nnoremap <right> <nop>

let mapleader=","

" Edit another file in the same directory as the current file
" uses expression to extract path from current file's path
cnoremap %% <C-R>=expand('%:h').'/'<cr>
map <leader>e :e %%
map <leader>pu i STDERR.puts

" Easier navigation between split windows
nnoremap <c-j> <c-w>j
nnoremap <c-k> <c-w>k
nnoremap <c-h> <c-w>h
nnoremap <c-l> <c-w>l

" Repeat last command
:noremap <C-P> @:<CR>

" Configure bufferline
let g:bufferline_echo = 0
autocmd VimEnter *
  \ let &statusline='%{bufferline#refresh_status()}' . bufferline#get_status_string() . ' %=%l,%v' . '        %P'

" Strip trailing whitespace
function! <SID>StripTrailingWhitespaces()
  " Preparation: save last search, and cursor position.
  let _s=@/
  let l = line(".")
  let c = col(".")
  " Do the business:
  %s/\s\+$//e
  " Clean up: restore previous search history, and cursor position
  let @/=_s
  call cursor(l, c)
endfunction
autocmd BufWritePre * :call <SID>StripTrailingWhitespaces()

function! NumberToggle()
  if(&relativenumber == 1)
    set norelativenumber
  else
    set relativenumber
  endif
endfunc

nnoremap <C-n> :call NumberToggle()<cr>
nnoremap <C-b> :Bd<cr>