Update runtime files
diff --git a/runtime/indent/pov.vim b/runtime/indent/pov.vim
index f74c96b..60077ff 100644
--- a/runtime/indent/pov.vim
+++ b/runtime/indent/pov.vim
@@ -2,6 +2,7 @@
" Language: PoV-Ray Scene Description Language
" Maintainer: David Necas (Yeti) <yeti@physics.muni.cz>
" Last Change: 2017 Jun 13
+" 2022 April: b:undo_indent added by Doug Kearns
" URI: http://trific.ath.cx/Ftp/vim/indent/pov.vim
" Only load this indent file when no other was loaded.
@@ -16,6 +17,8 @@
setlocal indentexpr=GetPoVRayIndent()
setlocal indentkeys+==else,=end,0]
+let b:undo_indent = "setl inde< indk< lisp<"
+
" Only define the function once.
if exists("*GetPoVRayIndent")
finish