Shougo

if !exists('g:auplugin_disable')
  let g:auplugin_disable = 0
endif

command! -nargs=1 -complete=customlist,auplugin#_complete AuLoad call s:load_plugin(<q-args>)

function! auplugin#_complete(arglead, cmdline, cursorpos)"{{{
  let list = split(globpath(&runtimepath, 'auplugin/*'), '\n')
  let list += split(globpath(&runtimepath, 'bundle/*'), '\n')
  let rtp = map(split(&runtimepath, ','), 'expand(v:val)')

Shougo

" Capture {{{
command!
      \ -nargs=+ -bang
      \ -complete=command
      \ Capture
      \ call s:cmd_capture([<f-args>], <bang>0)

function! C(cmd)
  redir => result
  silent execute a:cmd