From 3587824d710ffcfd1270be0a354a770a49312b6f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?David=20Rodr=C3=ADguez?= <deivid.rodriguez@riseup.net>
Date: Thu, 25 Apr 2019 11:48:40 +0200
Subject: [PATCH] [rubygems/rubygems] Don't unregister default specifications

I think this should be more efficient?

https://github.com/rubygems/rubygems/commit/a1de78104f
---
 lib/rubygems.rb                         | 14 ++------------
 lib/rubygems/core_ext/kernel_require.rb |  1 -
 2 files changed, 2 insertions(+), 13 deletions(-)

diff --git a/lib/rubygems.rb b/lib/rubygems.rb
index 9440ab048a..1e79e408fb 100644
--- a/lib/rubygems.rb
+++ b/lib/rubygems.rb
@@ -1293,18 +1293,8 @@ An Array (#{env.inspect}) was passed in from #{caller[3]}
     # Find a Gem::Specification of default gem from +path+
 
     def find_unresolved_default_spec(path)
-      @path_to_default_spec_map[path]
-    end
-
-    ##
-    # Remove needless Gem::Specification of default gem from
-    # unresolved default gem list
-
-    def remove_unresolved_default_spec(spec)
-      spec.files.each do |file|
-        @path_to_default_spec_map.delete(file)
-        @path_to_default_spec_map.delete(file.sub(suffix_regexp, ""))
-      end
+      default_spec = @path_to_default_spec_map[path]
+      return default_spec if default_spec && loaded_specs[default_spec.name] != default_spec
     end
 
     ##
diff --git a/lib/rubygems/core_ext/kernel_require.rb b/lib/rubygems/core_ext/kernel_require.rb
index 5656524f33..7407c02931 100755
--- a/lib/rubygems/core_ext/kernel_require.rb
+++ b/lib/rubygems/core_ext/kernel_require.rb
@@ -57,7 +57,6 @@ module Kernel
     end
 
     if spec = Gem.find_unresolved_default_spec(path)
-      Gem.remove_unresolved_default_spec(spec)
       begin
         Kernel.send(:gem, spec.name, "#{Gem::Requirement.default}.a")
       rescue Exception