A simple benchmark for vim-ruby indentation

benchmark.vim

function! s:Stats(list)
  let sum = 0
  for item in a:list
    let sum += item
  endfor

  let mean = sum / len(a:list)

  let sum_deviations = 0
  for item in a:list
    let sum_deviations += (item - mean) * (item - mean)
  endfor
  let standard_deviation = sum_deviations / len(a:list)

  return {"mean": mean, "std": standard_deviation}
endfunction

let times = []

edit indent_test_large_complex_file.rb
" edit indent_test_active_record.rb
normal! gg

for i in range(1, 10)
  let start_time = reltime()
  normal! =G
  let end_time = reltime()

  call add(times, reltimefloat(reltime(start_time, end_time)))
endfor

echomsg string(s:Stats(times))