.vimrc

syntax on
set pastetoggle=<F12>
set smarttab
set smartindent
set autoindent
set tabstop=2
set softtabstop=2
set sw=2
set expandtab
set hlsearch

nmap <silent><Home> :call SmartHome("n")<CR>
nmap <silent><End> :call SmartEnd("n")<CR>
imap <silent><Home> <C-r>=SmartHome("i")<CR>
imap <silent><End> <C-r>=SmartEnd("i")<CR>
vmap <silent><Home> <Esc>:call SmartHome("v")<CR>
vmap <silent><End> <Esc>:call SmartEnd("v")<CR>


function! SuperCleverTab()
  if strpart(getline('.'), 0, col('.') - 1) =~ '^\s*$'
    return "\<Tab>"
  else
    if &omnifunc != ''
      return "\<C-X>\<C-O>"
    elseif &dictionary != ''
      return "\<C-K>"
    else
      return "\<C-N>"
    endif
  endif
endfunction
inoremap <Tab> <C-R>=SuperCleverTab()<cr>



function SmartHome(mode)
  let curcol = col(".")
  "gravitate towards beginning for wrapped lines
  if curcol > indent(".") + 2
    call cursor(0, curcol - 1)
  endif
  if curcol == 1 || curcol > indent(".") + 1
    if &wrap
      normal g^
    else
      normal ^
    endif
  else
    if &wrap
      normal g0
    else
      normal 0
    endif
  endif
  if a:mode == "v"
    normal msgv`s
  endif
  return ""
endfunction

function SmartEnd(mode)
  let curcol = col(".")
  let lastcol = a:mode == "i" ? col("$") : col("$") - 1
  "gravitate towards ending for wrapped lines
  if curcol < lastcol - 1
    call cursor(0, curcol + 1)
  endif
  if curcol < lastcol
    if &wrap
      normal g$
    else
      normal $
    endif
  else
    normal g_
  endif
  "correct edit mode cursor position, put after current character
  if a:mode == "i"
    call cursor(0, col(".") + 1)
  endif
  if a:mode == "v"
    normal msgv`s
  endif
  return ""
endfunction