From a0f610602bb6f509ac11f68f85de81790ef6959c Mon Sep 17 00:00:00 2001
From: John Bintz <john@coswellproductions.com>
Date: Sat, 6 Oct 2012 16:42:51 -0400
Subject: [PATCH] support the ruby version option

---
 features/ruby_gemfile.feature | 11 +++++++++++
 lib/penchant/gemfile.rb       | 10 +++++++---
 2 files changed, 18 insertions(+), 3 deletions(-)

diff --git a/features/ruby_gemfile.feature b/features/ruby_gemfile.feature
index 291ff4d..96173d1 100644
--- a/features/ruby_gemfile.feature
+++ b/features/ruby_gemfile.feature
@@ -411,3 +411,14 @@ Feature: Gemfiles
       gem "one"
       """
 
+  Scenario: Pass through the Ruby version
+    Given I have the file "Gemfile.penchant" with the content:
+      """
+      ruby '1.9.3'
+      """
+    When I rebuild the Gemfile for "local" mode
+    Then the file "Gemfile" should have the following content:
+      """
+      # generated by penchant, environment: local
+      ruby "1.9.3"
+      """
diff --git a/lib/penchant/gemfile.rb b/lib/penchant/gemfile.rb
index ead4c1c..b2a79ab 100644
--- a/lib/penchant/gemfile.rb
+++ b/lib/penchant/gemfile.rb
@@ -203,6 +203,10 @@ module Penchant
         end
       end
 
+      def ruby(version)
+        @output << %{ruby "#{version}"}
+      end
+
       protected
       def args_to_string(args)
         args.inspect[1..-2]
@@ -218,9 +222,9 @@ module Penchant
         [ args, template ]
       end
 
-      def call_and_indent_output(block)
+      def call_and_indent_output(block = nil, &given_block)
         index = @output.length
-        block.call
+        (block || given_block).call
         index.upto(@output.length - 1) do |i|
           @output[i] = "  " + @output[i]
         end
@@ -270,7 +274,7 @@ module Penchant
             properties[key] = value
           end
         end
-        
+
         properties
       end