* lib/rubygems: Update to RubyGems 2.4.2.

* test/rubygems:  ditto.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47748 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

7 files changed, 74 insertions, 8 deletions

diff --git a/lib/rubygems.rb b/lib/rubygems.rb
index 453520665a..ac22c3cdce 100644
--- a/lib/rubygems.rb
+++ b/lib/rubygems.rb
@@ -9,7 +9,7 @@ require 'rbconfig'
 require 'thread'
 
 module Gem
-  VERSION = '2.4.1'
+  VERSION = '2.4.2'
 end
 
 # Must be first since it unloads the prelude from 1.9.2
diff --git a/lib/rubygems/commands/update_command.rb b/lib/rubygems/commands/update_command.rb
index 9e9bd088f2..b132089612 100644
--- a/lib/rubygems/commands/update_command.rb
+++ b/lib/rubygems/commands/update_command.rb
@@ -203,7 +203,10 @@ command to remove old versions.
   def update_gem name, version = Gem::Requirement.default
     return if @updated.any? { |spec| spec.name == name }
 
-    @installer ||= Gem::DependencyInstaller.new options
+    update_options = options.dup
+    update_options[:prerelease] = version.prerelease?
+
+    @installer = Gem::DependencyInstaller.new update_options
 
     say "Updating #{name}"
     begin
diff --git a/lib/rubygems/installer.rb b/lib/rubygems/installer.rb
index e5cfc0f536..d497ba5c05 100644
--- a/lib/rubygems/installer.rb
+++ b/lib/rubygems/installer.rb
@@ -681,14 +681,14 @@ TEXT
   # return the stub script text used to launch the true Ruby script
 
   def windows_stub_script(bindir, bin_file_name)
-    ruby = File.basename(Gem.ruby).chomp('"')
+    ruby = Gem.ruby.chomp('"').tr(File::SEPARATOR, "\\")
     return <<-TEXT
 @ECHO OFF
 IF NOT "%~f0" == "~f0" GOTO :WinNT
-@"#{bindir.tr(File::SEPARATOR, File::ALT_SEPARATOR)}\\#{ruby}" "#{File.join(bindir, bin_file_name)}" %1 %2 %3 %4 %5 %6 %7 %8 %9
+@"#{ruby}" "#{File.join(bindir, bin_file_name)}" %1 %2 %3 %4 %5 %6 %7 %8 %9
 GOTO :EOF
 :WinNT
-@"%~dp0#{ruby}" "%~dpn0" %*
+@"#{ruby}" "%~dpn0" %*
 TEXT
   end
 
diff --git a/lib/rubygems/request_set.rb b/lib/rubygems/request_set.rb
index d12e06358d..57f9c39ba9 100644
--- a/lib/rubygems/request_set.rb
+++ b/lib/rubygems/request_set.rb
@@ -284,6 +284,48 @@ class Gem::RequestSet
     gf.load
   end
 
+  def pretty_print q # :nodoc:
+    q.group 2, '[RequestSet:', ']' do
+      q.breakable
+
+      if @remote then
+        q.text 'remote'
+        q.breakable
+      end
+
+      if @prerelease then
+        q.text 'prerelease'
+        q.breakable
+      end
+
+      if @development_shallow then
+        q.text 'shallow development'
+        q.breakable
+      elsif @development then
+        q.text 'development'
+        q.breakable
+      end
+
+      if @soft_missing then
+        q.text 'soft missing'
+      end
+
+      q.group 2, '[dependencies:', ']' do
+        q.breakable
+        @dependencies.map do |dep|
+          q.text dep.to_s
+          q.breakable
+        end
+      end
+
+      q.breakable
+      q.text 'sets:'
+
+      q.breakable
+      q.pp @sets.map { |set| set.class }
+    end
+  end
+
   ##
   # Resolve the requested dependencies and return an Array of Specification
   # objects to be activated.
diff --git a/lib/rubygems/request_set/gem_dependency_api.rb b/lib/rubygems/request_set/gem_dependency_api.rb
index 24179dd1ed..9aad5ab5d3 100644
--- a/lib/rubygems/request_set/gem_dependency_api.rb
+++ b/lib/rubygems/request_set/gem_dependency_api.rb
@@ -596,8 +596,17 @@ Gem dependencies file #{@path} requires #{name} more than once.
 
     groups = gem_group spec.name, {}
 
+    self_dep = Gem::Dependency.new spec.name, spec.version
+
+    add_dependencies groups, [self_dep]
     add_dependencies groups, spec.runtime_dependencies
 
+    @dependencies[spec.name] = '!'
+
+    spec.dependencies.each do |dep|
+      @dependencies[dep.name] = dep.requirement
+    end
+
     groups << development_group
 
     add_dependencies groups, spec.development_dependencies
diff --git a/lib/rubygems/request_set/lockfile.rb b/lib/rubygems/request_set/lockfile.rb
index 2901dba871..918aa971e5 100644
--- a/lib/rubygems/request_set/lockfile.rb
+++ b/lib/rubygems/request_set/lockfile.rb
@@ -168,8 +168,12 @@ class Gem::RequestSet::Lockfile
     dest = File.expand_path(dest)
     base = File.expand_path(base)
 
-    if dest.index(base) == 0
-      return dest[base.size+1..-1]
+    if dest.index(base) == 0 then
+      offset = dest[base.size+1..-1]
+
+      return '.' unless offset
+
+      offset
     else
       dest
     end
diff --git a/lib/rubygems/source/git.rb b/lib/rubygems/source/git.rb
index fb9cbce2fb..35c2270a74 100644
--- a/lib/rubygems/source/git.rb
+++ b/lib/rubygems/source/git.rb
@@ -178,9 +178,17 @@ class Gem::Source::Git < Gem::Source
   # Converts the git reference for the repository into a commit hash.
 
   def rev_parse # :nodoc:
+    hash = nil
+
     Dir.chdir repo_cache_dir do
-      Gem::Util.popen(@git, 'rev-parse', @reference).strip
+      hash = Gem::Util.popen(@git, 'rev-parse', @reference).strip
     end
+
+    raise Gem::Exception,
+          "unable to find reference #{@reference} in #{@repository}" unless
+            $?.success?
+
+    hash
   end
 
   ##