https://git.ruby-lang.org/ruby.git/commit/?id=64e89713da

From 64e89713dab469a162d042fbc5c3595116937e8d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?David=20Rodr=C3=ADguez?= <deivid.rodriguez@r...>
Date: Mon, 27 Apr 2020 22:23:16 +0200
Subject: [rubygems/rubygems] Extract a `remove_file_list` helper

https://github.com/rubygems/rubygems/commit/8cc6087590

diff --git a/lib/rubygems/commands/setup_command.rb b/lib/rubygems/commands/setup_command.rb
index 37a305e..5563b0e 100644
--- a/lib/rubygems/commands/setup_command.rb
+++ b/lib/rubygems/commands/setup_command.rb
@@ -550,14 +550,7 @@ abort "#{deprecation_message}" https://github.com/ruby/ruby/blob/trunk/lib/rubygems/commands/setup_command.rb#L550
         file.start_with? 'defaults'
       end
 
-      Dir.chdir old_lib_dir do
-        to_remove.each do |file|
-          FileUtils.rm_f file
-
-          warn "unable to remove old file #{file} please remove it by hand" if
-            File.exist? file
-        end
-      end
+      remove_file_list(to_remove, old_lib_dir)
     end
   end
 
@@ -644,6 +637,17 @@ abort "#{deprecation_message}" https://github.com/ruby/ruby/blob/trunk/lib/rubygems/commands/setup_command.rb#L637
     install file, dest_file, :mode => options[:data_mode] || 0644
   end
 
+  def remove_file_list(files, dir)
+    Dir.chdir dir do
+      files.each do |file|
+        FileUtils.rm_f file
+
+        warn "unable to remove old file #{file} please remove it by hand" if
+          File.exist? file
+      end
+    end
+  end
+
   def target_bin_path(bin_dir, bin_file)
     bin_file_formatted = if options[:format_executable]
                            Gem.default_exec_format % bin_file
-- 
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