1 files changed, 14 insertions, 46 deletions

diff --git a/lib/rubygems/bundler_version_finder.rb b/lib/rubygems/bundler_version_finder.rb
index 9ce0a2378e..dd2fd77418 100644
--- a/lib/rubygems/bundler_version_finder.rb
+++ b/lib/rubygems/bundler_version_finder.rb
@@ -2,48 +2,18 @@
 
 module Gem::BundlerVersionFinder
   def self.bundler_version
-    version, _ = bundler_version_with_reason
+    v = ENV["BUNDLER_VERSION"]
 
-    return unless version
+    v ||= bundle_update_bundler_version
+    return if v == true
 
-    Gem::Version.new(version)
-  end
-
-  def self.bundler_version_with_reason
-    if v = ENV["BUNDLER_VERSION"]
-      return [v, "`$BUNDLER_VERSION`"]
-    end
-    if v = bundle_update_bundler_version
-      return if v == true
-      return [v, "`bundle update --bundler`"]
-    end
-    v, lockfile = lockfile_version
-    if v
-      return [v, "your #{lockfile}"]
-    end
-  end
+    v ||= lockfile_version
+    return unless v
 
-  def self.missing_version_message
-    return unless vr = bundler_version_with_reason
-    <<-EOS
-Could not find 'bundler' (#{vr.first}) required by #{vr.last}.
-To update to the latest version installed on your system, run `bundle update --bundler`.
-To install the missing version, run `gem install bundler:#{vr.first}`
-    EOS
+    Gem::Version.new(v)
   end
 
-  def self.compatible?(spec)
-    return true unless spec.name == "bundler".freeze
-    return true unless bundler_version = self.bundler_version
-
-    spec.version.segments.first == bundler_version.segments.first
-  end
-
-  def self.filter!(specs)
-    return unless bundler_version = self.bundler_version
-
-    specs.reject! {|spec| spec.version.segments.first != bundler_version.segments.first }
-
+  def self.prioritize!(specs)
     exact_match_index = specs.find_index {|spec| spec.version == bundler_version }
     return unless exact_match_index
 
@@ -51,7 +21,7 @@ To install the missing version, run `gem install bundler:#{vr.first}`
   end
 
   def self.bundle_update_bundler_version
-    return unless File.basename($0) == "bundle".freeze
+    return unless File.basename($0) == "bundle"
     return unless "update".start_with?(ARGV.first || " ")
     bundler_version = nil
     update_index = nil
@@ -68,23 +38,21 @@ To install the missing version, run `gem install bundler:#{vr.first}`
   private_class_method :bundle_update_bundler_version
 
   def self.lockfile_version
-    return unless lockfile = lockfile_contents
-    lockfile, contents = lockfile
-    lockfile ||= "lockfile"
+    return unless contents = lockfile_contents
     regexp = /\n\nBUNDLED WITH\n\s{2,}(#{Gem::Version::VERSION_PATTERN})\n/
     return unless contents =~ regexp
-    [$1, lockfile]
+    $1
   end
   private_class_method :lockfile_version
 
   def self.lockfile_contents
     gemfile = ENV["BUNDLE_GEMFILE"]
-    gemfile = nil if gemfile && gemfile.empty?
+    gemfile = nil if gemfile&.empty?
 
     unless gemfile
       begin
         Gem::Util.traverse_parents(Dir.pwd) do |directory|
-          next unless gemfile = Gem::GEM_DEP_FILES.find {|f| File.file?(f.tap(&Gem::UNTAINT)) }
+          next unless gemfile = Gem::GEM_DEP_FILES.find {|f| File.file?(f) }
 
           gemfile = File.join directory, gemfile
           break
@@ -99,11 +67,11 @@ To install the missing version, run `gem install bundler:#{vr.first}`
     lockfile = case gemfile
                when "gems.rb" then "gems.locked"
                else "#{gemfile}.lock"
-               end.dup.tap(&Gem::UNTAINT)
+    end
 
     return unless File.file?(lockfile)
 
-    [lockfile, File.read(lockfile)]
+    File.read(lockfile)
   end
   private_class_method :lockfile_contents
 end