patch 8.1.1082: "Conceal" match is mixed up with 'hlsearch' match. commit https://github.com/vim/vim/commit/ab62c19ea034d76632bbbf4265a9fc17e7508541 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Mar 30 16:39:05 2019 +0100 patch 8.1.1082: "Conceal" match is mixed up with 'hlsearch' match. Problem: "Conceal" match is mixed up with 'hlsearch' match. Solution: Check that a match is found, not a 'hlsearch' item. (Andy Massimino, closes #4073)

" Vim filetype plugin file
" Language:             calendar(1) 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< inc< fo<"

setlocal comments=s1:/*,mb:*,ex:*/ commentstring& include&
setlocal formatoptions-=t formatoptions+=croql

let &cpo = s:cpo_save
unlet s:cpo_save