3 files changed, 13 insertions, 9 deletions
diff --git a/lib/rubygems/commands/install_command.rb b/lib/rubygems/commands/install_command.rb
index 48cd3869f9..dad19380ea 100644
--- a/lib/rubygems/commands/install_command.rb
+++ b/lib/rubygems/commands/install_command.rb
@@ -50,7 +50,11 @@ class Gem::Commands::InstallCommand < Gem::Command
 
     installed_gems = []
 
-    ENV['GEM_PATH'] = options[:install_dir] # HACK what does this do?
+    if options[:install_dir].nil? and RUBY_VERSION > '1.9' then
+      ENV.delete 'GEM_PATH'
+    else
+      ENV['GEM_PATH'] = options[:install_dir] # HACK what does this do?
+    end
 
     install_options = {
       :env_shebang => options[:env_shebang],
diff --git a/lib/rubygems/commands/query_command.rb b/lib/rubygems/commands/query_command.rb
index cc81f3f07e..f4d6120bcd 100644
--- a/lib/rubygems/commands/query_command.rb
+++ b/lib/rubygems/commands/query_command.rb
@@ -131,18 +131,18 @@ class Gem::Commands::QueryCommand < Gem::Command
       versions[spec_tuple.first] << [spec_tuple, source_uri]
     end
 
-    versions = versions.sort_by do |(name,),|
+    versions = versions.sort_by do |(name,_),_|
       name.downcase
     end
 
     versions.each do |gem_name, matching_tuples|
-      matching_tuples = matching_tuples.sort_by do |(name, version,),|
+      matching_tuples = matching_tuples.sort_by do |(name, version,_),_|
         version
       end.reverse
 
       seen = {}
 
-      matching_tuples.delete_if do |(name, version,),|
+      matching_tuples.delete_if do |(name, version,_),_|
         if seen[version] then
           true
         else
@@ -154,7 +154,7 @@ class Gem::Commands::QueryCommand < Gem::Command
       entry = gem_name.dup
 
       if options[:versions] then
-        versions = matching_tuples.map { |(name, version,),| version }.uniq
+        versions = matching_tuples.map { |(name, version,_),_| version }.uniq
         entry << " (#{versions.join ', '})"
       end
 
diff --git a/lib/rubygems/commands/sources_command.rb b/lib/rubygems/commands/sources_command.rb
index f45438463c..9aabb77cb1 100644
--- a/lib/rubygems/commands/sources_command.rb
+++ b/lib/rubygems/commands/sources_command.rb
@@ -111,10 +111,10 @@ Will cause RubyGems to revert to legacy indexes, degrading performance.
       fetcher = Gem::SpecFetcher.fetcher
 
       if fetcher.legacy_repos.empty? then
-        Gem.sources.each do |source_uri|
-          source_uri = URI.parse source_uri
-          fetcher.load_specs source_uri, 'specs'
-          fetcher.load_specs source_uri, 'latest_specs'
+        Gem.sources.each do |update_uri|
+          update_uri = URI.parse update_uri
+          fetcher.load_specs update_uri, 'specs'
+          fetcher.load_specs update_uri, 'latest_specs'
         end
       else
         Gem::SourceInfoCache.cache true