runtime(racket): undo some indent options only when vim9script is available (#13935)
This copies commit 64edf95 (indent: only reset some options when has
vim9, 2024-01-30) from https://github.com/benknoble/vim-racket.
Signed-off-by: D. Ben Knoble <ben.knoble+github@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/indent/racket.vim b/runtime/indent/racket.vim
index 2d45d89..bf6eeff 100644
--- a/runtime/indent/racket.vim
+++ b/runtime/indent/racket.vim
@@ -3,7 +3,7 @@
" Maintainer: D. Ben Knoble <ben.knoble+github@gmail.com>
" Previous Maintainer: Will Langstroth <will@langstroth.com>
" URL: https://github.com/benknoble/vim-racket
-" Last Change: 2023 Jul 17
+" Last Change: 2024 Jan 30
if exists("b:did_indent")
finish
@@ -66,4 +66,4 @@
setlocal lispwords+=case/dep
setlocal lispwords+=define/obs
-let b:undo_indent = "setlocal indentexpr< lisp< lispoptions< ai< si< lw<"
+let b:undo_indent = "setlocal lisp< ai< si< lw<" .. (has('vim9script') ? 'indentexpr< lispoptions<' : '')