Update runtime files
diff --git a/runtime/ftplugin/help.vim b/runtime/ftplugin/help.vim
index 9eb7214..b619a75 100644
--- a/runtime/ftplugin/help.vim
+++ b/runtime/ftplugin/help.vim
@@ -1,7 +1,7 @@
 " Vim filetype plugin file
 " Language:             Vim help file
 " Previous Maintainer:  Nikolai Weibull <now@bitwi.se>
-" Latest Revision:      2008-07-09
+" Latest Revision:      2018-12-29
 
 if exists("b:did_ftplugin")
   finish
@@ -11,9 +11,9 @@
 let s:cpo_save = &cpo
 set cpo&vim
 
-let b:undo_ftplugin = "setl fo< tw< cole< cocu<"
+let b:undo_ftplugin = "setl fo< tw< cole< cocu< keywordprg<"
 
-setlocal formatoptions+=tcroql textwidth=78
+setlocal formatoptions+=tcroql textwidth=78 keywordprg=:help
 if has("conceal")
   setlocal cole=2 cocu=nc
 endif
diff --git a/runtime/ftplugin/logcheck.vim b/runtime/ftplugin/logcheck.vim
index 7d4671d..9d664b2 100644
--- a/runtime/ftplugin/logcheck.vim
+++ b/runtime/ftplugin/logcheck.vim
@@ -1,16 +1,16 @@
 " Vim filetype plugin file
 " Language:    Logcheck
-" Maintainer:  Debian Vim Maintainers <pkg-vim-maintainers@lists.alioth.debian.org>
-" Last Change: 2012 Jan 15
+" Maintainer:  Debian Vim Maintainers
+" Last Change: 2018 Dec 27
 " License:     Vim License
-" URL: http://hg.debian.org/hg/pkg-vim/vim/file/unstable/runtime/ftplugin/logcheck.vim
+" URL: https://salsa.debian.org/vim-team/vim-debian/blob/master/ftplugin/logcheck.vim
 
-if exists("b:did_ftplugin")
+if exists('b:did_ftplugin')
     finish
 endif
 let b:did_ftplugin = 1
 
-let b:undo_ftplugin = "setl fo<"
+let b:undo_ftplugin = 'setl fo<'
 
 " Do not hard-wrap non-comment lines since each line is a self-contained
 " regular expression
diff --git a/runtime/ftplugin/rst.vim b/runtime/ftplugin/rst.vim
index 9d737cd..8ab56b0 100644
--- a/runtime/ftplugin/rst.vim
+++ b/runtime/ftplugin/rst.vim
@@ -3,7 +3,7 @@
 " Maintainer: Marshall Ward <marshall.ward@gmail.com>
 " Original Maintainer: Nikolai Weibull <now@bitwi.se>
 " Website: https://github.com/marshallward/vim-restructuredtext
-" Latest Revision: 2018-01-07
+" Latest Revision: 2018-12-29
 
 if exists("b:did_ftplugin")
     finish
@@ -13,6 +13,11 @@
 let s:cpo_save = &cpo
 set cpo&vim
 
+"Disable folding
+if !exists('g:rst_fold_enabled')
+  let g:rst_fold_enabled = 0
+endif
+
 let b:undo_ftplugin = "setl com< cms< et< fo<"
 
 setlocal comments=fb:.. commentstring=..\ %s expandtab