diff --git a/lib/haml/html.rb b/lib/haml/html.rb
index dbc4b13c..e116fc5e 100644
--- a/lib/haml/html.rb
+++ b/lib/haml/html.rb
@@ -2,9 +2,60 @@ require File.dirname(__FILE__) + '/../haml'
 
 require 'haml/engine'
 require 'rubygems'
-require 'hpricot'
 require 'cgi'
 
+module Haml
+  class HTML
+    # A module containing utility methods that every Hpricot node
+    # should have.
+    module Node
+      # Returns the Haml representation of the given node.
+      #
+      # @param tabs [Fixnum] The indentation level of the resulting Haml.
+      # @option options (see Haml::HTML#initialize)
+      def to_haml(tabs, options)
+        parse_text(self.to_s, tabs)
+      end
+
+      private
+
+      def tabulate(tabs)
+        '  ' * tabs
+      end
+
+      def parse_text(text, tabs)
+        text.strip!
+        if text.empty?
+          String.new
+        else
+          lines = text.split("\n")
+
+          lines.map do |line|
+            line.strip!
+            "#{tabulate(tabs)}#{'\\' if Haml::Engine::SPECIAL_CHARACTERS.include?(line[0])}#{line}\n"
+          end.join
+        end
+      end
+    end
+  end
+end
+
+# Haml monkeypatches various Hpricot classes
+# to add methods for conversion to Haml.
+module Hpricot
+  # @see Hpricot
+  module Node
+    include Haml::HTML::Node
+  end
+
+  # @see Hpricot
+  class BaseEle
+    include Haml::HTML::Node
+  end
+end
+
+require 'hpricot'
+
 module Haml
   # Converts HTML documents into Haml templates.
   # Depends on [Hpricot](http://code.whytheluckystiff.net/hpricot/) for HTML parsing.
@@ -46,67 +97,35 @@ module Haml
     end
     alias_method :to_haml, :render
 
-    # Haml monkeypatches various Hpricot classes
-    # to add methods for conversion to Haml.
-    module ::Hpricot::Node
-      # Returns the Haml representation of the given node.
-      #
-      # @param tabs [Fixnum] The indentation level of the resulting Haml.
-      # @option options (see Haml::HTML#initialize)
-      def to_haml(tabs, options)
-        parse_text(self.to_s, tabs)
-      end
-
-      private
-
-      def tabulate(tabs)
-        '  ' * tabs
-      end
-
-      def parse_text(text, tabs)
-        text.strip!
-        if text.empty?
-          String.new
-        else
-          lines = text.split("\n")
-
-          lines.map do |line|
-            line.strip!
-            "#{tabulate(tabs)}#{'\\' if Haml::Engine::SPECIAL_CHARACTERS.include?(line[0])}#{line}\n"
-          end.join
-        end
-      end
-    end
-
     TEXT_REGEXP = /^(\s*).*$/
 
-    # @see Hpricot::Node
+    # @see Hpricot
     class ::Hpricot::Doc
-      # @see Hpricot::Node#to_haml
+      # @see Haml::HTML::Node#to_haml
       def to_haml(tabs, options)
         (children || []).inject('') {|s, c| s << c.to_haml(0, options)}
       end
     end
 
-    # @see Hpricot::Node
+    # @see Hpricot
     class ::Hpricot::XMLDecl
-      # @see Hpricot::Node#to_haml
+      # @see Haml::HTML::Node#to_haml
       def to_haml(tabs, options)
         "#{tabulate(tabs)}!!! XML\n"
       end
     end
 
-    # @see Hpricot::Node
+    # @see Hpricot
     class ::Hpricot::CData
-      # @see Hpricot::Node#to_haml
+      # @see Haml::HTML::Node#to_haml
       def to_haml(tabs, options)
         "#{tabulate(tabs)}:cdata\n#{parse_text(self.content, tabs + 1)}"
       end
     end
 
-    # @see Hpricot::Node
+    # @see Hpricot
     class ::Hpricot::DocType
-      # @see Hpricot::Node#to_haml
+      # @see Haml::HTML::Node#to_haml
       def to_haml(tabs, options)
         attrs = public_id.scan(/DTD\s+([^\s]+)\s*([^\s]*)\s*([^\s]*)\s*\/\//)[0]
         if attrs == nil
@@ -137,17 +156,17 @@ module Haml
       end
     end
 
-    # @see Hpricot::Node
+    # @see Hpricot
     class ::Hpricot::Comment
-      # @see Hpricot::Node#to_haml
+      # @see Haml::HTML::Node#to_haml
       def to_haml(tabs, options)
         "#{tabulate(tabs)}/\n#{parse_text(self.content, tabs + 1)}"
       end
     end
 
-    # @see Hpricot::Node
+    # @see Hpricot
     class ::Hpricot::Elem
-      # @see Hpricot::Node#to_haml
+      # @see Haml::HTML::Node#to_haml
       def to_haml(tabs, options)
         output = "#{tabulate(tabs)}"
         if options[:rhtml] && name[0...5] == 'haml:'
diff --git a/lib/haml/precompiler.rb b/lib/haml/precompiler.rb
index 3df8291f..e395ceea 100644
--- a/lib/haml/precompiler.rb
+++ b/lib/haml/precompiler.rb
@@ -571,7 +571,10 @@ END
       attributes = {}
 
       scanner.scan(/\(\s*/)
-      until (name, value = parse_new_attribute(scanner)).first.nil?
+      loop do
+        name, value = parse_new_attribute(scanner)
+        break if name.nil?
+
         if name == false
           text = (Haml::Shared.balance(line, ?(, ?)) || [line]).first
           raise Haml::SyntaxError.new("Invalid attribute list: #{text.inspect}.", last_line - 1)
diff --git a/lib/sass/script/funcall.rb b/lib/sass/script/funcall.rb
index de5f396f..d05d2cf9 100644
--- a/lib/sass/script/funcall.rb
+++ b/lib/sass/script/funcall.rb
@@ -42,7 +42,7 @@ module Sass
 
         return Functions::EvaluationContext.new(environment.options).send(name, *args)
       rescue ArgumentError => e
-        raise e unless e.backtrace.first =~ /:in `(#{name}|perform)'$/
+        raise e unless e.backtrace.first =~ /:in `(block in )?(#{name}|perform)'$/
         raise Sass::SyntaxError.new("#{e.message} for `#{name}'")
       end
     end
diff --git a/test/haml/template_test.rb b/test/haml/template_test.rb
index 03012be8..859f767e 100644
--- a/test/haml/template_test.rb
+++ b/test/haml/template_test.rb
@@ -140,8 +140,10 @@ class TemplateTest < Test::Unit::TestCase
   end
 
   def test_action_view_templates_render_correctly
-    @base.content_for(:layout) {'Lorem ipsum dolor sit amet'}
-    assert_renders_correctly 'content_for_layout'
+    @base.with_output_buffer("") do
+      @base.content_for(:layout) {'Lorem ipsum dolor sit amet'}
+      assert_renders_correctly 'content_for_layout'
+    end
   end
 
   def test_instance_variables_should_work_inside_templates
diff --git a/test/test_helper.rb b/test/test_helper.rb
index d1c3700c..8a1f3e22 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -7,7 +7,7 @@ $:.unshift lib_dir unless $:.include?(lib_dir)
 require 'haml'
 require 'sass'
 
-Sass::RAILS_LOADED = true
+Sass::RAILS_LOADED = true unless defined?(Sass::RAILS_LOADED)
 
 # required because of Sass::Plugin
 unless defined? RAILS_ROOT