twty.vim

function! s:append(line)
  let wn = bufwinnr("tweets")
  if wn == -1
    return 0
  endif
  exe wn 'wincmd w'
  try
    let o = jsondecode(a:line)
    let ts = type(o) == 3 ? o : [o]
    for t in ts
      1put!=t.user.screen_name . ': ' . t.text
    endfor
  finally
    wincmd p
  endtry
endfunction

if bufwinnr("tweets") == -1
  10new tweets
  setlocal buftype=nofile bufhidden=hide noswapfile
  wincmd p
endif

function! TweetsCallback(handle, msg)
  for line in split(a:msg, "\n")
    call s:append(line)
  endfor
  redraw
endfunction

let handle = connect("127.0.0.1:7777", "raw", "TweetsCallback")