diff --git a/lib/puppet/interface.rb b/lib/puppet/interface.rb
index 6be8b6930..6c288f3c0 100644
--- a/lib/puppet/interface.rb
+++ b/lib/puppet/interface.rb
@@ -1,156 +1,157 @@
 require 'puppet'
 require 'puppet/util/autoload'
 require 'puppet/interface/documentation'
 require 'prettyprint'
+require 'semver'
 
 class Puppet::Interface
   include FullDocs
 
   require 'puppet/interface/face_collection'
 
   require 'puppet/interface/action_manager'
   include Puppet::Interface::ActionManager
   extend Puppet::Interface::ActionManager
 
   require 'puppet/interface/option_manager'
   include Puppet::Interface::OptionManager
   extend Puppet::Interface::OptionManager
 
   include Puppet::Util
 
   class << self
     # This is just so we can search for actions.  We only use its
     # list of directories to search.
     # Can't we utilize an external autoloader, or simply use the $LOAD_PATH? -pvb
     def autoloader
       @autoloader ||= Puppet::Util::Autoload.new(:application, "puppet/face")
     end
 
     def faces
       Puppet::Interface::FaceCollection.faces
     end
 
     def register(instance)
       Puppet::Interface::FaceCollection.register(instance)
     end
 
     def define(name, version, &block)
       face = Puppet::Interface::FaceCollection[name, version]
       if face.nil? then
         face = self.new(name, version)
         Puppet::Interface::FaceCollection.register(face)
         # REVISIT: Shouldn't this be delayed until *after* we evaluate the
         # current block, not done before? --daniel 2011-04-07
         face.load_actions
       end
 
       face.instance_eval(&block) if block_given?
 
       return face
     end
 
     def face?(name, version)
       Puppet::Interface::FaceCollection[name, version]
     end
 
     def [](name, version)
       unless face = Puppet::Interface::FaceCollection[name, version]
         if current = Puppet::Interface::FaceCollection[name, :current]
           raise Puppet::Error, "Could not find version #{version} of #{name}"
         else
           raise Puppet::Error, "Could not find Puppet Face #{name.inspect}"
         end
       end
       face
     end
   end
 
   def set_default_format(format)
     Puppet.warning("set_default_format is deprecated (and ineffective); use render_as on your actions instead.")
   end
 
 
   ########################################################################
   # Documentation.  We currently have to rewrite both getters because we share
   # the same instance between build-time and the runtime instance.  When that
   # splits out this should merge into a module that both the action and face
   # include. --daniel 2011-04-17
   def synopsis
     build_synopsis self.name, '<action>'
   end
 
 
   ########################################################################
   attr_reader :name, :version
 
   def initialize(name, version, &block)
-    unless Puppet::Interface::FaceCollection.validate_version(version)
+    unless SemVer.valid?(version)
       raise ArgumentError, "Cannot create face #{name.inspect} with invalid version number '#{version}'!"
     end
 
     @name    = Puppet::Interface::FaceCollection.underscorize(name)
-    @version = version
+    @version = SemVer.new(version)
 
     # The few bits of documentation we actually demand.  The default license
     # is a favour to our end users; if you happen to get that in a core face
     # report it as a bug, please. --daniel 2011-04-26
     @authors  = []
     @license  = 'All Rights Reserved'
 
     instance_eval(&block) if block_given?
   end
 
   # Try to find actions defined in other files.
   def load_actions
     Puppet::Interface.autoloader.search_directories.each do |dir|
       Dir.glob(File.join(dir, "puppet/face/#{name}", "*.rb")).each do |file|
         action = file.sub(dir, '').sub(/^[\\\/]/, '').sub(/\.rb/, '')
         Puppet.debug "Loading action '#{action}' for '#{name}' from '#{dir}/#{action}.rb'"
         require(action)
       end
     end
   end
 
   def to_s
     "Puppet::Face[#{name.inspect}, #{version.inspect}]"
   end
 
   ########################################################################
   # Action decoration, whee!  You are not expected to care about this code,
   # which exists to support face building and construction.  I marked these
   # private because the implementation is crude and ugly, and I don't yet know
   # enough to work out how to make it clean.
   #
   # Once we have established that these methods will likely change radically,
   # to be unrecognizable in the final outcome.  At which point we will throw
   # all this away, replace it with something nice, and work out if we should
   # be making this visible to the outside world... --daniel 2011-04-14
   private
   def __invoke_decorations(type, action, passed_args = [], passed_options = {})
     [:before, :after].member?(type) or fail "unknown decoration type #{type}"
 
     # Collect the decoration methods matching our pass.
     methods = action.options.select do |name|
       passed_options.has_key? name
     end.map do |name|
       action.get_option(name).__decoration_name(type)
     end
 
     methods.reverse! if type == :after
 
     # Exceptions here should propagate up; this implements a hook we can use
     # reasonably for option validation.
     methods.each do |hook|
       respond_to? hook and self.__send__(hook, action, passed_args, passed_options)
     end
   end
 
   def __add_method(name, proc)
     meta_def(name, &proc)
     method(name).unbind
   end
   def self.__add_method(name, proc)
     define_method(name, proc)
     instance_method(name)
   end
 end
diff --git a/lib/puppet/interface/face_collection.rb b/lib/puppet/interface/face_collection.rb
index 12d3c56b1..4522824fd 100644
--- a/lib/puppet/interface/face_collection.rb
+++ b/lib/puppet/interface/face_collection.rb
@@ -1,137 +1,98 @@
 require 'puppet/interface'
 
 module Puppet::Interface::FaceCollection
-  SEMVER_VERSION = /^(\d+)\.(\d+)\.(\d+)([A-Za-z][0-9A-Za-z-]*|)$/
-
   @faces = Hash.new { |hash, key| hash[key] = {} }
 
   def self.faces
     unless @loaded
       @loaded = true
       $LOAD_PATH.each do |dir|
         Dir.glob("#{dir}/puppet/face/*.rb").
           collect {|f| File.basename(f, '.rb') }.
           each {|name| self[name, :current] }
       end
     end
     @faces.keys.select {|name| @faces[name].length > 0 }
   end
 
-  def self.validate_version(version)
-    !!(SEMVER_VERSION =~ version.to_s)
-  end
-
-  def self.semver_to_array(v)
-    parts = SEMVER_VERSION.match(v).to_a[1..4]
-    parts[0..2] = parts[0..2].map { |e| e.to_i }
-    parts
-  end
-
-  def self.cmp_semver(a, b)
-    a, b = [a, b].map do |x| semver_to_array(x) end
-
-    cmp = a[0..2] <=> b[0..2]
-    if cmp == 0
-      cmp = a[3] <=> b[3]
-      cmp = +1 if a[3].empty? && !b[3].empty?
-      cmp = -1 if b[3].empty? && !a[3].empty?
-    end
-    cmp
-  end
-
-  def self.prefix_match?(desired, target)
-    # Can't meaningfully do a prefix match with current on either side.
-    return false if desired == :current
-    return false if target  == :current
-
-    # REVISIT: Should probably fail if the matcher is not valid.
-    prefix = desired.split('.').map {|x| x =~ /^\d+$/ and x.to_i }
-    have   = semver_to_array(target)
-
-    while want = prefix.shift do
-      return false unless want == have.shift
-    end
-    return true
-  end
-
   def self.[](name, version)
     name = underscorize(name)
     get_face(name, version) or load_face(name, version)
   end
 
   # get face from memory, without loading.
-  def self.get_face(name, desired_version)
+  def self.get_face(name, pattern)
     return nil unless @faces.has_key? name
+    return @faces[name][:current] if pattern == :current
 
-    return @faces[name][:current] if desired_version == :current
-
-    found = @faces[name].keys.select {|v| prefix_match?(desired_version, v) }.sort.last
+    versions = @faces[name].keys - [ :current ]
+    found    = SemVer.find_matching(pattern, versions)
     return @faces[name][found]
   end
 
   # try to load the face, and return it.
   def self.load_face(name, version)
     # We always load the current version file; the common case is that we have
     # the expected version and any compatibility versions in the same file,
     # the default.  Which means that this is almost always the case.
     #
     # We use require to avoid executing the code multiple times, like any
     # other Ruby library that we might want to use.  --daniel 2011-04-06
     begin
       require "puppet/face/#{name}"
 
       # If we wanted :current, we need to index to find that; direct version
       # requests just work™ as they go. --daniel 2011-04-06
       if version == :current then
         # We need to find current out of this.  This is the largest version
         # number that doesn't have a dedicated on-disk file present; those
         # represent "experimental" versions of faces, which we don't fully
         # support yet.
         #
         # We walk the versions from highest to lowest and take the first version
         # that is not defined in an explicitly versioned file on disk as the
         # current version.
         #
         # This constrains us to only ship experimental versions with *one*
         # version in the file, not multiple, but given you can't reliably load
         # them except by side-effect when you ignore that rule this seems safe
         # enough...
         #
         # Given those constraints, and that we are not going to ship a versioned
         # interface that is not :current in this release, we are going to leave
         # these thoughts in place, and just punt on the actual versioning.
         #
         # When we upgrade the core to support multiple versions we can solve the
         # problems then; as lazy as possible.
         #
         # We do support multiple versions in the same file, though, so we sort
         # versions here and return the last item in that set.
         #
         # --daniel 2011-04-06
-        latest_ver = @faces[name].keys.sort {|a, b| cmp_semver(a, b) }.last
+        latest_ver = @faces[name].keys.sort.last
         @faces[name][:current] = @faces[name][latest_ver]
       end
     rescue LoadError => e
       raise unless e.message =~ %r{-- puppet/face/#{name}$}
       # ...guess we didn't find the file; return a much better problem.
     rescue SyntaxError => e
       raise unless e.message =~ %r{puppet/face/#{name}\.rb:\d+: }
       Puppet.err "Failed to load face #{name}:\n#{e}"
       # ...but we just carry on after complaining.
     end
 
     return get_face(name, version)
   end
 
   def self.register(face)
     @faces[underscorize(face.name)][face.version] = face
   end
 
   def self.underscorize(name)
     unless name.to_s =~ /^[-_a-z]+$/i then
       raise ArgumentError, "#{name.inspect} (#{name.class}) is not a valid face name"
     end
 
     name.to_s.downcase.split(/[-_]/).join('_').to_sym
   end
 end
diff --git a/lib/semver.rb b/lib/semver.rb
new file mode 100644
index 000000000..ef9435abd
--- /dev/null
+++ b/lib/semver.rb
@@ -0,0 +1,65 @@
+class SemVer
+  VERSION = /^v?(\d+)\.(\d+)\.(\d+)([A-Za-z][0-9A-Za-z-]*|)$/
+  SIMPLE_RANGE = /^v?(\d+|[xX])(?:\.(\d+|[xX])(?:\.(\d+|[xX]))?)?$/
+
+  include Comparable
+
+  def self.valid?(ver)
+    VERSION =~ ver
+  end
+
+  def self.find_matching(pattern, versions)
+    versions.select { |v| v.matched_by?("#{pattern}") }.sort.last
+  end
+
+  attr_reader :major, :minor, :tiny, :special
+
+  def initialize(ver)
+    unless SemVer.valid?(ver)
+      raise ArgumentError.new("Invalid version string '#{ver}'!")
+    end
+
+    @major, @minor, @tiny, @special = VERSION.match(ver).captures.map do |x|
+      # Because Kernel#Integer tries to interpret hex and octal strings, which
+      # we specifically do not want, and which cannot be overridden in 1.8.7.
+      Float(x).to_i rescue x
+    end
+  end
+
+  def <=>(other)
+    other = SemVer.new("#{other}") unless other.is_a? SemVer
+    return self.major <=> other.major unless self.major == other.major
+    return self.minor <=> other.minor unless self.minor == other.minor
+    return self.tiny  <=> other.tiny  unless self.tiny  == other.tiny
+
+    return 0  if self.special  == other.special
+    return 1  if self.special  == ''
+    return -1 if other.special == ''
+
+    return self.special <=> other.special
+  end
+
+  def matched_by?(pattern)
+    # For the time being, this is restricted to exact version matches and
+    # simple range patterns.  In the future, we should implement some or all of
+    # the comparison operators here:
+    # https://github.com/isaacs/node-semver/blob/d474801/semver.js#L340
+
+    case pattern
+    when SIMPLE_RANGE
+      pattern = SIMPLE_RANGE.match(pattern).captures
+      pattern[1] = @minor unless pattern[1] && pattern[1] !~ /x/i
+      pattern[2] = @tiny  unless pattern[2] && pattern[2] !~ /x/i
+      [@major, @minor, @tiny] == pattern.map { |x| x.to_i }
+    when VERSION
+      self == SemVer.new(pattern)
+    else
+      false
+    end
+  end
+
+  def inspect
+    "v#{@major}.#{@minor}.#{@tiny}#{@special}"
+  end
+  alias :to_s :inspect
+end
diff --git a/spec/unit/interface/face_collection_spec.rb b/spec/unit/interface/face_collection_spec.rb
index 4ad8787c5..98887a778 100755
--- a/spec/unit/interface/face_collection_spec.rb
+++ b/spec/unit/interface/face_collection_spec.rb
@@ -1,180 +1,152 @@
 #!/usr/bin/env rspec
 require 'spec_helper'
 
 require 'tmpdir'
 require 'puppet/interface/face_collection'
 
 describe Puppet::Interface::FaceCollection do
   # To avoid cross-pollution we have to save and restore both the hash
   # containing all the interface data, and the array used by require.  Restoring
   # both means that we don't leak side-effects across the code. --daniel 2011-04-06
   #
   # Worse luck, we *also* need to flush $" of anything defining a face,
   # because otherwise we can cross-pollute from other test files and end up
   # with no faces loaded, but the require value set true. --daniel 2011-04-10
   before :each do
     @original_faces    = subject.instance_variable_get("@faces").dup
     @original_required = $".dup
     $".delete_if do |path| path =~ %r{/face/.*\.rb$} end
     subject.instance_variable_get(:@faces).clear
     subject.instance_variable_set(:@loaded, false)
   end
 
   after :each do
     subject.instance_variable_set(:@faces, @original_faces)
     @original_required.each {|f| $".push f unless $".include? f }
   end
 
-  describe "::prefix_match?" do
-    #   want     have
-    { ['1.0.0', '1.0.0'] => true,
-      ['1.0',   '1.0.0'] => true,
-      ['1',     '1.0.0'] => true,
-      ['1.0.0', '1.1.0'] => false,
-      ['1.0',   '1.1.0'] => false,
-      ['1',     '1.1.0'] => true,
-      ['1.0.1', '1.0.0'] => false,
-    }.each do |data, result|
-      it "should return #{result.inspect} for prefix_match?(#{data.join(', ')})" do
-        subject.prefix_match?(*data).should == result
-      end
-    end
-  end
-
-  describe "::validate_version" do
-    { '10.10.10'     => true,
-      '1.2.3.4'      => false,
-      '10.10.10beta' => true,
-      '10.10'        => false,
-      '123'          => false,
-      'v1.1.1'       => false,
-    }.each do |input, result|
-      it "should#{result ? '' : ' not'} permit #{input.inspect}" do
-        subject.validate_version(input).should(result ? be_true : be_false)
-      end
-    end
-  end
-
   describe "::[]" do
     before :each do
-      subject.instance_variable_get("@faces")[:foo]['0.0.1'] = 10
+      subject.instance_variable_get("@faces")[:foo][SemVer.new('0.0.1')] = 10
     end
 
     it "should return the face with the given name" do
       subject["foo", '0.0.1'].should == 10
     end
 
     it "should attempt to load the face if it isn't found" do
       subject.expects(:require).with('puppet/face/bar')
       subject["bar", '0.0.1']
     end
 
     it "should attempt to load the default face for the specified version :current" do
       subject.expects(:require).with('puppet/face/fozzie')
       subject['fozzie', :current]
     end
 
     it "should return true if the face specified is registered" do
-      subject.instance_variable_get("@faces")[:foo]['0.0.1'] = 10
+      subject.instance_variable_get("@faces")[:foo][SemVer.new('0.0.1')] = 10
       subject["foo", '0.0.1'].should == 10
     end
 
     it "should attempt to require the face if it is not registered" do
       subject.expects(:require).with do |file|
-        subject.instance_variable_get("@faces")[:bar]['0.0.1'] = true
+        subject.instance_variable_get("@faces")[:bar][SemVer.new('0.0.1')] = true
         file == 'puppet/face/bar'
       end
       subject["bar", '0.0.1'].should be_true
     end
 
     it "should return false if the face is not registered" do
       subject.stubs(:require).returns(true)
       subject["bar", '0.0.1'].should be_false
     end
 
     it "should return false if the face file itself is missing" do
       subject.stubs(:require).
         raises(LoadError, 'no such file to load -- puppet/face/bar')
       subject["bar", '0.0.1'].should be_false
     end
 
     it "should register the version loaded by `:current` as `:current`" do
       subject.expects(:require).with do |file|
         subject.instance_variable_get("@faces")[:huzzah]['2.0.1'] = :huzzah_face
         file == 'puppet/face/huzzah'
       end
       subject["huzzah", :current]
       subject.instance_variable_get("@faces")[:huzzah][:current].should == :huzzah_face
     end
 
     context "with something on disk" do
       it "should register the version loaded from `puppet/face/{name}` as `:current`" do
         subject["huzzah", '2.0.1'].should be
         subject["huzzah", :current].should be
         Puppet::Face[:huzzah, '2.0.1'].should == Puppet::Face[:huzzah, :current]
       end
 
       it "should index :current when the code was pre-required" do
         subject.instance_variable_get("@faces")[:huzzah].should_not be_key :current
         require 'puppet/face/huzzah'
         subject[:huzzah, :current].should be_true
       end
     end
 
     it "should not cause an invalid face to be enumerated later" do
       subject[:there_is_no_face, :current].should be_false
       subject.faces.should_not include :there_is_no_face
     end
   end
 
   describe "::register" do
     it "should store the face by name" do
       face = Puppet::Face.new(:my_face, '0.0.1')
       subject.register(face)
-      subject.instance_variable_get("@faces").should == {:my_face => {'0.0.1' => face}}
+      subject.instance_variable_get("@faces").should == {
+        :my_face => { face.version => face }
+      }
     end
   end
 
   describe "::underscorize" do
     faulty = [1, "#foo", "$bar", "sturm und drang", :"sturm und drang"]
     valid  = {
       "Foo"      => :foo,
       :Foo       => :foo,
       "foo_bar"  => :foo_bar,
       :foo_bar   => :foo_bar,
       "foo-bar"  => :foo_bar,
       :"foo-bar" => :foo_bar,
     }
 
     valid.each do |input, expect|
       it "should map #{input.inspect} to #{expect.inspect}" do
         result = subject.underscorize(input)
         result.should == expect
       end
     end
 
     faulty.each do |input|
       it "should fail when presented with #{input.inspect} (#{input.class})" do
         expect { subject.underscorize(input) }.
           should raise_error ArgumentError, /not a valid face name/
       end
     end
   end
 
   context "faulty faces" do
     before :each do
       $:.unshift "#{PuppetSpec::FIXTURE_DIR}/faulty_face"
     end
 
     after :each do
       $:.delete_if {|x| x == "#{PuppetSpec::FIXTURE_DIR}/faulty_face"}
     end
 
     it "should not die if a face has a syntax error" do
       subject.faces.should be_include :help
       subject.faces.should_not be_include :syntax
       @logs.should_not be_empty
       @logs.first.message.should =~ /syntax error/
     end
   end
 end
diff --git a/spec/unit/semver_spec.rb b/spec/unit/semver_spec.rb
new file mode 100644
index 000000000..0e0457b6e
--- /dev/null
+++ b/spec/unit/semver_spec.rb
@@ -0,0 +1,187 @@
+require 'spec_helper'
+require 'semver'
+
+describe SemVer do
+  describe '::valid?' do
+    it 'should validate basic version strings' do
+      %w[ 0.0.0 999.999.999 v0.0.0 v999.999.999 ].each do |vstring|
+        SemVer.valid?(vstring).should be_true
+      end
+    end
+
+    it 'should validate special version strings' do
+      %w[ 0.0.0foo 999.999.999bar v0.0.0a v999.999.999beta ].each do |vstring|
+        SemVer.valid?(vstring).should be_true
+      end
+    end
+
+    it 'should fail to validate invalid version strings' do
+      %w[ nope 0.0foo 999.999 x0.0.0 z.z.z 1.2.3-beta 1.x.y ].each do |vstring|
+        SemVer.valid?(vstring).should be_false
+      end
+    end
+  end
+
+  describe '::find_matching' do
+    before :all do
+      @versions = %w[
+        0.0.1
+        0.0.2
+        1.0.0rc1
+        1.0.0rc2
+        1.0.0
+        1.0.1
+        1.1.0
+        1.1.1
+        1.1.2
+        1.1.3
+        1.1.4
+        1.2.0
+        1.2.1
+        2.0.0rc1
+      ].map { |v| SemVer.new(v) }
+    end
+
+    it 'should match exact versions by string' do
+      @versions.each do |version|
+        SemVer.find_matching(version, @versions).should == version
+      end
+    end
+
+    it 'should return nil if no versions match' do
+      %w[ 3.0.0 2.0.0rc2 1.0.0alpha ].each do |v|
+        SemVer.find_matching(v, @versions).should be_nil
+      end
+    end
+
+    it 'should find the greatest match for partial versions' do
+      SemVer.find_matching('1.0', @versions).should == 'v1.0.1'
+      SemVer.find_matching('1.1', @versions).should == 'v1.1.4'
+      SemVer.find_matching('1', @versions).should   == 'v1.2.1'
+      SemVer.find_matching('2', @versions).should   == 'v2.0.0rc1'
+      SemVer.find_matching('2.1', @versions).should == nil
+    end
+
+
+    it 'should find the greatest match for versions with placeholders' do
+      SemVer.find_matching('1.0.x', @versions).should == 'v1.0.1'
+      SemVer.find_matching('1.1.x', @versions).should == 'v1.1.4'
+      SemVer.find_matching('1.x', @versions).should   == 'v1.2.1'
+      SemVer.find_matching('1.x.x', @versions).should == 'v1.2.1'
+      SemVer.find_matching('2.x', @versions).should   == 'v2.0.0rc1'
+      SemVer.find_matching('2.x.x', @versions).should == 'v2.0.0rc1'
+      SemVer.find_matching('2.1.x', @versions).should == nil
+    end
+  end
+
+  describe 'instantiation' do
+    it 'should raise an exception when passed an invalid version string' do
+      expect { SemVer.new('invalidVersion') }.to raise_exception ArgumentError
+    end
+
+    it 'should populate the appropriate fields for a basic version string' do
+      version = SemVer.new('1.2.3')
+      version.major.should   == 1
+      version.minor.should   == 2
+      version.tiny.should    == 3
+      version.special.should == ''
+    end
+
+    it 'should populate the appropriate fields for a special version string' do
+      version = SemVer.new('3.4.5beta6')
+      version.major.should   == 3
+      version.minor.should   == 4
+      version.tiny.should    == 5
+      version.special.should == 'beta6'
+    end
+  end
+
+  describe '#matched_by?' do
+    subject { SemVer.new('v1.2.3beta') }
+
+    describe 'should match against' do
+      describe 'literal version strings' do
+        it { should be_matched_by('1.2.3beta') }
+
+        it { should_not be_matched_by('1.2.3alpha') }
+        it { should_not be_matched_by('1.2.4beta') }
+        it { should_not be_matched_by('1.3.3beta') }
+        it { should_not be_matched_by('2.2.3beta') }
+      end
+
+      describe 'partial version strings' do
+        it { should be_matched_by('1.2.3') }
+        it { should be_matched_by('1.2') }
+        it { should be_matched_by('1') }
+      end
+
+      describe 'version strings with placeholders' do
+        it { should be_matched_by('1.2.x') }
+        it { should be_matched_by('1.x.3') }
+        it { should be_matched_by('1.x.x') }
+        it { should be_matched_by('1.x') }
+      end
+    end
+  end
+
+  describe 'comparisons' do
+    describe 'against a string' do
+      it 'should just work' do
+        SemVer.new('1.2.3').should == '1.2.3'
+      end
+    end
+
+    describe 'against a symbol' do
+      it 'should just work' do
+        SemVer.new('1.2.3').should == :'1.2.3'
+      end
+    end
+
+    describe 'on a basic version (v1.2.3)' do
+      subject { SemVer.new('v1.2.3') }
+
+      it { should == SemVer.new('1.2.3') }
+
+      # Different major versions
+      it { should > SemVer.new('0.2.3') }
+      it { should < SemVer.new('2.2.3') }
+
+      # Different minor versions
+      it { should > SemVer.new('1.1.3') }
+      it { should < SemVer.new('1.3.3') }
+
+      # Different tiny versions
+      it { should > SemVer.new('1.2.2') }
+      it { should < SemVer.new('1.2.4') }
+
+      # Against special versions
+      it { should > SemVer.new('1.2.3beta') }
+      it { should < SemVer.new('1.2.4beta') }
+    end
+
+    describe 'on a special version (v1.2.3beta)' do
+      subject { SemVer.new('v1.2.3beta') }
+
+      it { should == SemVer.new('1.2.3beta') }
+
+      # Same version, final release
+      it { should < SemVer.new('1.2.3') }
+
+      # Different major versions
+      it { should > SemVer.new('0.2.3') }
+      it { should < SemVer.new('2.2.3') }
+
+      # Different minor versions
+      it { should > SemVer.new('1.1.3') }
+      it { should < SemVer.new('1.3.3') }
+
+      # Different tiny versions
+      it { should > SemVer.new('1.2.2') }
+      it { should < SemVer.new('1.2.4') }
+
+      # Against special versions
+      it { should > SemVer.new('1.2.3alpha') }
+      it { should < SemVer.new('1.2.3beta2') }
+    end
+  end
+end