vimrc

""
"" Thanks:
""   Gary Bernhardt  <destroyallsoftware.com>
""   Drew Neil  <vimcasts.org>
""   Tim Pope  <tbaggery.com>
""   Janus  <github.com/carlhuda/janus>
""

set nocompatible
set encoding=utf-8
set exrc                    " load vimrc from current directory

call pathogen#infect()
filetype plugin indent on

runtime macros/matchit.vim  " enables % to cycle through `if/else/endif`

syntax enable
if has('gui_running')
  set background=light
else
  set background=dark
endif
color railscasts
set synmaxcol=800           " don't try to highlight long lines

set nonumber    " line numbers aren't needed
set ruler       " show the cursor position all the time
set cursorline  " highlight the line of the cursor
set showcmd     " show partial commands below the status line
set shell=bash  " avoids munging PATH under zsh
let g:is_bash=1 " default shell syntax
set history=200 " remember more Ex commands
set scrolloff=3 " have some context around the current line always on screen

" Allow backgrounding buffers without writing them, and remember marks/undo
" for backgrounded buffers
set hidden

" Auto-reload buffers when file changed on disk
set autoread

" Disable swap files; systems don't crash that often these days
set updatecount=0

" Make Vim able to edit crontab files again.
set backupskip=/tmp/*,/private/tmp/*"

"" Whitespace
set nowrap                        " don't wrap lines
set tabstop=2                     " a tab is two spaces
set shiftwidth=2                  " an autoindent (with <<) is two spaces
set expandtab                     " use spaces, not tabs
set list                          " Show invisible characters
set backspace=indent,eol,start    " backspace through everything in insert mode
" Joining lines
set formatoptions+=j              " Delete comment char when joining commented lines
set nojoinspaces                  " Use only 1 space after "." when joining lines, not 2
" Indicator chars
set listchars=tab:▸\ ,trail:•,extends:❯,precedes:❮
set showbreak=↪\ 

"" Searching
set hlsearch                      " highlight matches
set incsearch                     " incremental searching
set ignorecase                    " searches are case insensitive...
set smartcase                     " ... unless they contain at least one capital letter
set gdefault                      " have :s///g flag by default on

" Time out on key codes but not mappings.
" Basically this makes terminal Vim work sanely.
set notimeout
set ttimeout
set ttimeoutlen=100

function s:setupWrapping()
  set wrap
  set wrapmargin=2
  set textwidth=80
endfunction

if has("autocmd")
  " Avoid showing trailing whitespace when in insert mode
  au InsertEnter * :set listchars-=trail:•
  au InsertLeave * :set listchars+=trail:•

  " In Makefiles, use real tabs, not tabs expanded to spaces
  au FileType make set noexpandtab

  " Make sure all markdown files have the correct filetype set and setup wrapping
  au BufRead,BufNewFile *.{md,markdown,mdown,mkd,mkdn,txt} setf markdown | call s:setupWrapping()

  " Treat JSON files like JavaScript
  au BufNewFile,BufRead *.json set ft=javascript

  " https://github.com/sstephenson/bats
  au BufNewFile,BufRead *.bats set ft=sh

  " make Python follow PEP8 ( http://www.python.org/dev/peps/pep-0008/ )
  au FileType python set softtabstop=4 tabstop=4 shiftwidth=4 textwidth=79

  " Remember last location in file, but not for commit messages.
  " see :help last-position-jump
  au BufReadPost * if &filetype !~ '^git\c' && line("'\"") > 0 && line("'\"") <= line("$")
    \| exe "normal! g`\"" | endif

  " mark Jekyll YAML frontmatter as comment
  au BufNewFile,BufRead *.{md,markdown,html,xml} sy match Comment /\%^---\_.\{-}---$/

  " magic markers: enable using `H/S/J/C to jump back to
  " last HTML, stylesheet, JS or Ruby code buffer
  au BufLeave *.{erb,html}      exe "normal! mH"
  au BufLeave *.{css,scss,sass} exe "normal! mS"
  au BufLeave *.{js,coffee}     exe "normal! mJ"
  au BufLeave *.{rb}            exe "normal! mC"
endif

" don't use Ex mode, use Q for formatting
map Q gq

" clear the search buffer when hitting return
:nnoremap <CR> :nohlsearch<cr>

" toggle the current fold
:nnoremap <Space> za

let mapleader=","

" paste lines from unnamed register and fix indentation
nmap <leader>p pV`]=
nmap <leader>P PV`]=

" http://vimcasts.org/e/14
cnoremap %% <C-R>=expand('%:h').'/'<cr>

map <leader>F :CtrlP %%<cr>
map <leader>b :CtrlPBuffer<cr>
let g:ctrlp_root_markers = ['.git', 'Rakefile']
" let g:ctrlp_extensions = ['tag', 'buffertag']

let g:turbux_command_test_unit = 'ruby -Ilib:test'
" let g:turbux_command_cucumber = 'cucumber -f progress'

let g:ackprg = 'ag --nogroup --nocolor --column'

" In command-line mode, C-a jumps to beginning (to match C-e)
cnoremap <C-a> <Home>

" ignore Rubinius, Sass cache files
set wildignore+=tmp/**,*.rbc,.rbx,*.scssc,*.sassc
" ignore Bundler standalone/vendor installs & gems
set wildignore+=bundle/**,vendor/bundle/**,vendor/cache/**
set wildignore+=node_modules/**

" toggle between last open buffers
nnoremap <leader><leader> <c-^>

command! KillWhitespace :normal :%s/ *$//g<cr><c-o><cr>

set splitright
set splitbelow

let g:tmux_is_last_pane = 0
au WinEnter * let g:tmux_is_last_pane = 0

" Like `wincmd` but also change tmux panes instead of vim windows when needed.
function s:TmuxWinCmd(direction)
  let nr = winnr()
  let tmux_last_pane = (a:direction == 'p' && g:tmux_is_last_pane)
  if !tmux_last_pane
    " try to switch windows within vim
    exec 'wincmd ' . a:direction
  endif
  " Forward the switch panes command to tmux if:
  " a) we're toggling between the last tmux pane;
  " b) we tried switching windows in vim but it didn't have effect.
  if tmux_last_pane || nr == winnr()
    let cmd = 'tmux select-pane -' . tr(a:direction, 'phjkl', 'lLDUR')
    exec 'silent !'.cmd
    redraw! " because `exec` fucked up the screen. why is this needed?? arrghh
    let g:tmux_is_last_pane = 1
    echo cmd
  else
    let g:tmux_is_last_pane = 0
  endif
endfunction

" navigate between split windows/tmux panes
nmap <c-j> :call <SID>TmuxWinCmd('j')<cr>
nmap <c-k> :call <SID>TmuxWinCmd('k')<cr>
nmap <c-h> :call <SID>TmuxWinCmd('h')<cr>
nmap <c-l> :call <SID>TmuxWinCmd('l')<cr>
nmap <c-\> :call <SID>TmuxWinCmd('p')<cr>

" disable cursor keys in normal mode
map <Left>  :echo "no!"<cr>
map <Right> :echo "no!"<cr>
map <Up>    :echo "no!"<cr>
map <Down>  :echo "no!"<cr>

if has("statusline") && !&cp
  set laststatus=2              " always show the status bar
  set statusline=%f\ %m\ %r     " filename, modified, readonly
  set statusline+=%{fugitive#statusline()}
  set statusline+=\ %l/%L[%p%%] " current line/total lines
  set statusline+=\ %v[0x%B]    " current column [hex char]
endif