Update runtime files
diff --git a/runtime/indent/python.vim b/runtime/indent/python.vim
index 307b7f6..6681229 100644
--- a/runtime/indent/python.vim
+++ b/runtime/indent/python.vim
@@ -2,7 +2,7 @@
" Language: Python
" Maintainer: Bram Moolenaar <Bram@vim.org>
" Original Author: David Bustos <bustos@caltech.edu>
-" Last Change: 2021 May 26
+" Last Change: 2021 Sep 26
" Only load this indent file when no other was loaded.
if exists("b:did_indent")
@@ -17,6 +17,8 @@
setlocal indentexpr=GetPythonIndent(v:lnum)
setlocal indentkeys+=<:>,=elif,=except
+let b:undo_indent = "setl ai< inde< indk< lisp<"
+
" Only define the function once.
if exists("*GetPythonIndent")
finish