patch 8.0.1361: some users don't want to diff with hidden buffers commit https://github.com/vim/vim/commit/97ce419201421f65f4764549ed80307a7ef9c7a6 Author: Bram Moolenaar <Bram@vim.org> Date: Fri Dec 1 20:35:58 2017 +0100 patch 8.0.1361: some users don't want to diff with hidden buffers Problem: Some users don't want to diff with hidden buffers. Solution: Add the "hiddenoff" item to 'diffopt'. (Alisue, closes https://github.com/vim/vim/issues/2394)