Set numbers

let g:number_mode = 1

function! g:ToggleNuMode(...)
  if a:0
    if(a:1 != -1)
      let g:number_mode = a:1
    else
      let g:number_mode -= 1
    endif
  else
    let g:number_mode += 1
  endif

  if g:number_mode > 2
    let g:number_mode = 0
  endif
  if g:number_mode < 0
    let g:number_mode = 2
  endif

  call g:TimDisplayNumbers()
endfunc

function! g:DisplayNumbers()
  if(g:number_mode == 1)
    set number
  elseif(g:number_mode == 2)
    set relativenumber
  else
    set nonumber
    set norelativenumber
  endif
endfunc

" Cycle
nnoremap <silent> <leader>n :call g:ToggleNuMode()<cr>
nnoremap <silent> <leader>NN :call g:ToggleNuMode(-1)<cr>

" Off
nnoremap <silent> <leader>N0 :call g:ToggleNuMode(0)<cr>

" Absolute
nnoremap <silent> <leader>Na :call g:ToggleNuMode(1)<cr>

" Relative
nnoremap <silent> <leader>Nr :call g:ToggleNuMode(2)<cr>