really, really fast vim filtering

selecta_ag.vim

" Requirements:
" selecta: https://github.com/garybernhardt/selecta
" ag: https://github.com/ggreer/the_silver_searcher

" Run a given vim command on the results of fuzzy selecting from a given shell
" command. See usage below.
function! SelectaCommand(choice_command, selecta_args, vim_command)
  try
    silent let selection = system(a:choice_command . " | selecta " . a:selecta_args)
  catch /Vim:Interrupt/
    " Swallow the ^C so that the redraw below happens; otherwise there will be
    " leftovers from selecta on the screen
    redraw!
    return
  endtry
  redraw!
  exec a:vim_command . " " . selection
endfunction

" Find all files in all non-dot directories starting in the working directory.
" Fuzzy select one of those. Open the selected file with :e.
nnoremap <c-p> :call SelectaCommand("ag --no-numbers --nogroup -l .", "", ":e")<cr>