patch 9.0.1435: scrolling too many lines when 'wrap' and 'diff' are set Commit: https://github.com/vim/vim/commit/38d867f041349e1400c2cce9cac06f59ae6ccbb1 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Apr 1 19:54:40 2023 +0100 patch 9.0.1435: scrolling too many lines when 'wrap' and 'diff' are set Problem: Scrolling too many lines when 'wrap' and 'diff' are set. Solution: Only scroll by screenlines for 'diff' when 'wrap' is not set. (closes #12211)

" Vim filetype plugin
" Language:	roff(7)
" Maintainer:	Aman Verma
" Homepage:	https://github.com/a-vrma/vim-nroff-ftplugin
" Previous Maintainer:	Chris Spiegel <cspiegel@gmail.com>
" Last Change:	2020 Nov 21

if exists("b:did_ftplugin")
  finish
endif
let b:did_ftplugin = 1

setlocal commentstring=.\\\"%s
setlocal comments=:.\\\"
setlocal sections+=Sh

let b:undo_ftplugin = 'setlocal commentstring< comments< sections<'