benchmark.vim

let n = 100000
let t = reltime()
for i in range(n)
  let _ = 0 < v:count ? v:count : 0
endfor
echomsg reltimestr(reltime(t))
let t = reltime()
for i in range(n)
  let _ = v:count ? v:count : 0
endfor
echomsg reltimestr(reltime(t))
let t = reltime()
for i in range(n)
  let _ = 0 < v:count ? v:count : 0
endfor
echomsg reltimestr(reltime(t))
let t = reltime()
for i in range(n)
  let _ = v:count ? v:count : 0
endfor
echomsg reltimestr(reltime(t))

dis-the-cho45.vim

" gitで現在開いているファイルの1つ前のバージョンを開く。(require metarw-git)

nnoremap <silent> eg :<C-u>call <SID>git_prev_rev()<CR>

function! s:git_prev_rev()
  let path = expand('%')
  let commit = "HEAD"

  let l = matchlist(path, 'git:\([^:]\+\):\([^:]\+\)')
  if len(l) > 0
    let commit = l[1]
    let path   = l[2]
  endif

  let output = system(printf('git log -n 1 --format="%%h %%s" %s -- %s',
  \                          shellescape(commit . '~'),
  \                          shellescape(path)))
  if v:shell_error != 0
    echoerr 'git log failed with the following reason:'
    echoerr output
    return
  endif

  let [commit_id, subject] = matchlist(output, '^\(\S*\)\s\(.*\)$')[1:2]
  silent edit `=printf('git:%s:%s', commit_id, path)`

  " カーソル移動がしたい? すれば良いじゃない!
  normal! 3339gghjklfofofofofo

  echo subject
endfunction

Result

  1.065487
  0.933179
  0.843261
  0.705416