Easily switch between absolute and relative line numbering.
What about toggling three states:
nnoremap <silent> <C-n> :let [&nu, &rnu] = [!&rnu, &nu+&rnu==1]<cr>
What about toggling three states:
nnoremap <silent> <C-n> :let [&nu, &rnu] = [!&rnu, &nu+&rnu==1]<cr>