.vimrc

fun! BumpVimrcVersion()
  let lines = getline(1,10)
  let i = 0
  for line in lines
    let i += 1
    if line =~ '^"\s*Version:'
      let version_str = matchstr(line,'\(Version:\s*\)\@<=[0-9.]\+')
      let vimrc_version = str2float(version_str) + 0.01
      cal setline( i, "\" Version: " . string(vimrc_version)  )
    elseif line =~ '^"\s*Date:'
      cal setline( i, "\" Date:    " . strftime("%c") )
    endif
  endfor
endf
aug AutoVimrcVersion
  au!
  au BufWritePre .vimrc :cal BumpVimrcVersion()
aug END