Quotes ruby command in case it contains spaces

* Closes rspec#674

Changelog.md

@@ -8,6 +8,7 @@ Enhancements
 * JSON Formatter (Alex Chaffee)
 * Refactor rake task internals (Sam Phippen)
 * Refactor HtmlFormatter (Pete Hodgson)
+* Autotest supports a path to Ruby that contains spaces (dsisnero)
 
 Bug fixes
 

lib/autotest/rspec2.rb

@@ -47,7 +47,7 @@ def consolidate_failures(failed)
   # Overrides Autotest's implementation to generate the rspec command to run
   def make_test_cmd(files_to_test)
     files_to_test.empty? ? '' :
-      "#{prefix}#{ruby}#{suffix} -S '#{RSPEC_EXECUTABLE}' --tty #{normalize(files_to_test).keys.flatten.map { |f| "'#{f}'"}.join(' ')}"
+      "#{prefix}'#{ruby}'#{suffix} -S '#{RSPEC_EXECUTABLE}' --tty #{normalize(files_to_test).keys.flatten.map { |f| "'#{f}'"}.join(' ')}"
   end
 
   # Generates a map of filenames to Arrays for Autotest

spec/autotest/rspec_spec.rb

@@ -3,7 +3,7 @@
 describe Autotest::Rspec2 do
   let(:rspec_autotest) { Autotest::Rspec2.new }
   let(:spec_cmd) { File.expand_path("../../../exe/rspec", __FILE__) }
-  let(:ruby_cmd) { "ruby" }
+  let(:ruby_cmd) { "/path/to/ruby" }
 
   before do
     File.stub(:exist?) { false }
@@ -50,6 +50,11 @@
       end
     end
 
+    it "quotes the path of the ruby executable" do
+      cmd = rspec_autotest.make_test_cmd(@files_to_test)
+      cmd.should match(%r('/path/to/ruby'))
+    end
+
     it "gives '--tty' to #{Autotest::Rspec2::RSPEC_EXECUTABLE}, not '--autotest'" do
       cmd = rspec_autotest.make_test_cmd(@files_to_test)
       cmd.should match(' --tty ')