New test for Boost version style

1_39_0 becomes 1.39.0

Cellar/homebrew/brewkit.rb

@@ -44,8 +44,10 @@ class Formula
     filename=File.basename url
     i=filename.index /[-_]\d/
     unless i.nil?
-      /^((\d+[.-])*\d+)/.match filename[i+1,1000] #1000 because rubysucks
-      @version = $1
+      /^((\d+[._])*(\d+-)?\d+)/.match filename[i+1,1000] #1000 because rubysucks
+      @version=$1
+      # if there are no dots replace underscores, boost do this, the bastards!
+      @version.gsub!('_', '.') unless @version.include? '.'
     else
       # no divisor or a '.' divisor, eg. dmd.1.11.zip
       /^[a-zA-Z._-]*((\d+\.)*\d+)/.match filename

Cellar/homebrew/unittest.rb

@@ -16,6 +16,11 @@ class BeerTasting < Test::Unit::TestCase
     assert_equal '1.1', r.version
   end
 
+  def test_version_underscores_all_the_way
+    r=Formula.new "http://example.com/boost_1_39_0.tar.bz2", 'nomd5'
+    assert_equal '1.39.0', r.version
+  end
+
   def test_version_internal_dash
     r=Formula.new "http://example.com/foo-arse-1.1-2.tar.gz", 'nomd5'
     assert_equal '1.1-2', r.version