From 3a145066a6d51cf622a9cd77d7f0942d7313fdc3 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Sat, 4 Sep 2021 00:26:39 +0900
Subject: [PATCH] Expand upstream issue numbers to URLs in ChangeLog

---
 tool/lib/vcs.rb | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tool/lib/vcs.rb b/tool/lib/vcs.rb
index 1ccf80a49f..c41276e3b4 100644
--- a/tool/lib/vcs.rb
+++ b/tool/lib/vcs.rb
@@ -625,6 +625,12 @@ class VCS
               end
               s = s.join('')
             end
+
+            if %r[^ +(https://github\.com/[^/]+/[^/]+/)commit/\h+\n(?=(?: +\n(?i: +Co-authored-by: .*\n)+)?(?:\n|\Z))] =~ s
+              issue = "#{$1}pull/"
+              s.gsub!(/\b[Ff]ix(?:e[sd])? \K#(?=\d+)/) {issue}
+            end
+
             s.gsub!(/ +\n/, "\n")
             s.sub!(/^Notes:/, '  \&')
             w.print h, s