Regenerate the bundler binstub and exclude it from rubocop (#1585)

Regenerate the bundler binstub and exclude it from rubocop

.rubocop.yml

@@ -6,6 +6,7 @@ require:
 AllCops:
   TargetRubyVersion: 2.5
   Exclude:
+    - bin/bundle
     - db/migrate/**
     - db/schema.rb
     - vendor/bundle/**/*

bin/bundle

@@ -8,57 +8,55 @@
 # this file is here to facilitate running it.
 #
 
-require 'rubygems'
+require "rubygems"
 
 m = Module.new do
   module_function
 
   def invoked_as_script?
-    File.expand_path($PROGRAM_NAME) == File.expand_path(__FILE__)
+    File.expand_path($0) == File.expand_path(__FILE__)
   end
 
   def env_var_version
-    ENV['BUNDLER_VERSION']
+    ENV["BUNDLER_VERSION"]
   end
 
   def cli_arg_version
     return unless invoked_as_script? # don't want to hijack other binstubs
-    return unless 'update'.start_with?(ARGV.first || ' ') # must be running `bundle update`
-
+    return unless "update".start_with?(ARGV.first || " ") # must be running `bundle update`
     bundler_version = nil
     update_index = nil
     ARGV.each_with_index do |a, i|
-      bundler_version = a if update_index && update_index.succ == i && a =~ Gem::Version::ANCHORED_VERSION_PATTERN
+      if update_index && update_index.succ == i && a =~ Gem::Version::ANCHORED_VERSION_PATTERN
+        bundler_version = a
+      end
       next unless a =~ /\A--bundler(?:[= ](#{Gem::Version::VERSION_PATTERN}))?\z/
-
-      bundler_version = Regexp.last_match(1) || '>= 0.a'
+      bundler_version = $1 || ">= 0.a"
       update_index = i
     end
     bundler_version
   end
 
   def gemfile
-    gemfile = ENV['BUNDLE_GEMFILE']
-    return gemfile if gemfile.present?
+    gemfile = ENV["BUNDLE_GEMFILE"]
+    return gemfile if gemfile && !gemfile.empty?
 
-    File.expand_path('../../Gemfile', __FILE__)
+    File.expand_path("../../Gemfile", __FILE__)
   end
 
   def lockfile
     lockfile =
       case File.basename(gemfile)
-      when 'gems.rb' then gemfile.sub(/\.rb$/, gemfile)
+      when "gems.rb" then gemfile.sub(/\.rb$/, gemfile)
       else "#{gemfile}.lock"
       end
     File.expand_path(lockfile)
   end
 
   def lockfile_version
     return unless File.file?(lockfile)
-
     lockfile_contents = File.read(lockfile)
     return unless lockfile_contents =~ /\n\nBUNDLED WITH\n\s{2,}(#{Gem::Version::VERSION_PATTERN})\n/
-
     Regexp.last_match(1)
   end
 
@@ -70,26 +68,25 @@ m = Module.new do
   end
 
   def load_bundler!
-    ENV['BUNDLE_GEMFILE'] ||= gemfile
+    ENV["BUNDLE_GEMFILE"] ||= gemfile
 
     # must dup string for RG < 1.8 compatibility
     activate_bundler(bundler_version.dup)
   end
 
   def activate_bundler(bundler_version)
-    bundler_version = '< 2' if Gem::Version.correct?(bundler_version) && Gem::Version.new(bundler_version).release < Gem::Version.new('2.0')
+    if Gem::Version.correct?(bundler_version) && Gem::Version.new(bundler_version).release < Gem::Version.new("2.0")
+      bundler_version = "< 2"
+    end
     gem_error = activation_error_handling do
-      gem 'bundler', bundler_version
+      gem "bundler", bundler_version
     end
     return if gem_error.nil?
-
     require_error = activation_error_handling do
-      require 'bundler/version'
+      require "bundler/version"
     end
     return if require_error.nil? && Gem::Requirement.new(bundler_version).satisfied_by?(Gem::Version.new(Bundler::VERSION))
-
-    warn "Activating bundler (#{bundler_version}) failed:\n#{gem_error.message}\n\n" \
-      "To install the version of bundler this project requires, run `gem install bundler -v '#{bundler_version}'`"
+    warn "Activating bundler (#{bundler_version}) failed:\n#{gem_error.message}\n\nTo install the version of bundler this project requires, run `gem install bundler -v '#{bundler_version}'`"
     exit 42
   end
 
@@ -103,4 +100,6 @@ end
 
 m.load_bundler!
 
-load Gem.bin_path('bundler', 'bundle') if m.invoked_as_script?
+if m.invoked_as_script?
+  load Gem.bin_path("bundler", "bundle")
+end