[rubygems/rubygems] Keep compatiblity of Bundler specs

https://github.com/rubygems/rubygems/commit/b211eeacba

1 files changed, 21 insertions, 1 deletions

diff --git a/lib/rubygems/config_file.rb b/lib/rubygems/config_file.rb
index 36cf20194c..97c11bd95d 100644
--- a/lib/rubygems/config_file.rb
+++ b/lib/rubygems/config_file.rb
@@ -352,7 +352,27 @@ if you believe they were disclosed to a third party.
 
     begin
       content = Bundler::YAMLSerializer.load(File.read(filename))
-      unless content.is_a? Hash
+      if content.is_a? Hash
+        content.transform_keys! do |k|
+          if k.match?(/__/)
+            if k.is_a?(Symbol)
+              k.to_s.gsub(/__/,".").to_sym
+            else
+              k.dup.gsub(/__/,".")
+            end
+          else
+            k
+          end
+        end
+
+        content.transform_values! do |v|
+          if (v.is_a?(Hash) || v.is_a?(String)) && v.empty?
+            nil
+          else
+            v
+          end
+        end
+      else
         warn "Failed to load #{filename} because it doesn't contain valid YAML hash"
         return {}
       end