colorcolumnのトグル

.vimrc

" 80文字範囲外塗りつぶしのオンオフ
function! s:ToggleMargin()
  let value = &colorcolumn
  if strlen(value)
    set colorcolumn=""
    set colorcolumn?
  else
    execute "set colorcolumn=".join(range(&textwidth+1, 999), ',')
    echo "  colorcolumn=81..."
  endif
endfunction