Fix tokenizing openssl style versions

Fixes Homebrew/homebrew#25736.

Library/Homebrew/test/test_versions.rb

@@ -2,6 +2,8 @@ require 'testing_env'
 require 'version'
 
 class VersionTests < Test::Unit::TestCase
+  include VersionAssertions
+
   def test_accepts_objects_responding_to_to_str
     value = stub(:to_str => '0.1')
     assert_equal '0.1', Version.new(value).to_s
@@ -12,6 +14,18 @@ class VersionTests < Test::Unit::TestCase
     assert_raises(TypeError) { Version.new(1) }
     assert_raises(TypeError) { Version.new(:symbol) }
   end
+
+  def test_tokens
+    assert_version_tokens %w{1 0 z23}, version('1.0z23')
+    assert_version_tokens %w{1 0 z23}, version('1.0.z23')
+    assert_version_tokens %w{1 0 z 23}, version('1.0.z.23')
+    assert_version_tokens %w{1 0 23 z}, version('1.0.23z')
+    assert_version_tokens %w{1 0 23 z}, version('1.0.23.z')
+  end
+
+  def test_openssl_style_tokenization
+    assert_version_tokens %w{1 0 1 f}, version('1.0.1f')
+  end
 end
 
 class VersionComparisonTests < Test::Unit::TestCase

Library/Homebrew/test/testing_env.rb

@@ -97,6 +97,10 @@ module VersionAssertions
   def assert_version_nil url
     assert_nil Version.parse(url)
   end
+
+  def assert_version_tokens tokens, version
+    assert_equal tokens, version.send(:tokens).map(&:to_s)
+  end
 end
 
 module Test::Unit::Assertions

Library/Homebrew/version.rb

@@ -43,7 +43,7 @@ class Version
   NULL_TOKEN = NullToken.new
 
   class StringToken < Token
-    PATTERN = /[a-z]+[0-9]+/i
+    PATTERN = /[a-z]+[0-9]*/i
 
     def initialize(value)
       @value = value.to_s