https://git.ruby-lang.org/ruby.git/commit/?id=ddacff2b41

From ddacff2b4140006d69ecf6d1ac63ddb791e92e5e Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Fri, 25 Dec 2020 17:40:56 +0900
Subject: Follow up on variations of the development start messages [ci skip]


diff --git a/tool/lib/vcs.rb b/tool/lib/vcs.rb
index 0c01abb..dd662e0 100644
--- a/tool/lib/vcs.rb
+++ b/tool/lib/vcs.rb
@@ -521,7 +521,7 @@ class VCS https://github.com/ruby/ruby/blob/trunk/tool/lib/vcs.rb#L521
 
     def branch_beginning(url)
       cmd_read(%W[ #{COMMAND} log -n1 --format=format:%H
-                   --author=matz --committer=matz --grep=has\ started
+                   --author=matz --committer=matz --grep=started\\.$
                    #{url.to_str} -- version.h include/ruby/version.h])
     end
 
-- 
cgit v0.10.2


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