Update runtime files
diff --git a/runtime/indent/dosbatch.vim b/runtime/indent/dosbatch.vim
index aea2a18..d24b139 100644
--- a/runtime/indent/dosbatch.vim
+++ b/runtime/indent/dosbatch.vim
@@ -2,7 +2,7 @@
" Language: MSDOS batch file (with NT command extensions)
" Maintainer: Ken Takata
" URL: https://github.com/k-takata/vim-dosbatch-indent
-" Last Change: 2017 May 10
+" Last Change: 2021-10-18
" Filenames: *.bat
" License: VIM License
@@ -17,6 +17,8 @@
setlocal indentkeys=!^F,o,O
setlocal indentkeys+=0=)
+let b:undo_indent = "setl ai< inde< indk< si<"
+
if exists("*GetDosBatchIndent")
finish
endif