From bda070f0162e293e296c1fe7e6cb80a736058162 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Wed, 30 Nov 2022 23:04:45 +0900
Subject: [PATCH] [ruby/rdoc] Fix `=end` delimiter

https://github.com/ruby/rdoc/commit/e1679fa7e4
---
 lib/rdoc/rd/block_parser.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/rdoc/rd/block_parser.rb b/lib/rdoc/rd/block_parser.rb
index bfcc126ed2..6f70622c0b 100644
--- a/lib/rdoc/rd/block_parser.rb
+++ b/lib/rdoc/rd/block_parser.rb
@@ -137,7 +137,7 @@ def next_token # :nodoc:
 =end
       @in_part = part
     # non-RD part end
-    when /^=end/
+    when /^=end(?:$|[\s\0\C-d\C-z])/
       if @in_part # if in non-RD part
 =begin # not imported to RDoc
 #  p "END_PART: #{@in_part}" # DEBUG