" Automatically open buffer when shortest partial tab expands to unique name
" Barry Arthur, Mar 10 2012

function! Buffalo(...)
  "echom 1
  let cmdline = getcmdline()
  if cmdline !~ '\C^b\%[uffer]'
    "echom 2
    return ' '
  endif
  if !a:0
    call g:bl.update()
    call feedkeys("\<C-G>")
    "echom 3
    return ' '
  endif
  let char = getchar()
  if char !~ '\d\+'
    call feedkeys(char)
    "echom 4
    return ''
  endif
  let char = nr2char(char)
  let partial = matchstr(cmdline, '^\a\+ \zs.*').char
  let bl = g:bl.filter('v:val["name"] =~ "' . partial . '"')
  if len(bl.buffers) == 1
    "echom 5
    return char."\<CR>"
  else
    "echom 6
    call feedkeys(char."\<C-D>\<C-G>")
    return ""
  endif
endfunction

cnore <expr> <C-G> Buffalo(1)
cnoremap <expr> <Space> Buffalo()