patch 9.0.1279: display shows lines scrolled down erroneously Commit: https://github.com/vim/vim/commit/61fdbfa1e3c842252b701aec12f45839ca41ece5 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Feb 4 13:57:55 2023 +0000 patch 9.0.1279: display shows lines scrolled down erroneously Problem: Display shows lines scrolled down erroneously. (Yishai Lerner) Solution: Do not change "wl_lnum" at index zero. (closes https://github.com/vim/vim/issues/11938)

" 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