patch 9.0.0671: negative topline using CTRL-Y with 'smoothscroll' and 'diff' Commit: https://github.com/vim/vim/commit/1a58e1d97cfc72e501cbf63ad75f46f1bb4c8da2 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Oct 6 13:09:17 2022 +0100 patch 9.0.0671: negative topline using CTRL-Y with 'smoothscroll' and 'diff' Problem: Negative topline using CTRL-Y with 'smoothscroll' and 'diff'. (Ernie Rael) Solution: Only use 'smoothscroll' when 'wrap' is set.

" Vim filetype plugin file
" Language:             Sieve filtering language input file
" Previous Maintainer:  Nikolai Weibull <now@bitwi.se>
" Latest Revision:      2008-07-09

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

let s:cpo_save = &cpo
set cpo&vim

let b:undo_ftplugin = "setl com< cms< fo<"

setlocal comments=s1:/*,mb:*,ex:*/,:# commentstring=#\ %s
setlocal formatoptions-=t formatoptions+=croql

let &cpo = s:cpo_save
unlet s:cpo_save