Merge commit 'mainstream/master'

Conflicts:
	railties/guides/files/stylesheets/main.css
	railties/guides/rails_guides/generator.rb
	railties/guides/source/index.erb.textile

3 files changed, 13 insertions, 5 deletions

diff --git a/actionpack/lib/action_controller/routing/builder.rb b/actionpack/lib/action_controller/routing/builder.rb
index 44d759444a..d9590c88b8 100644
--- a/actionpack/lib/action_controller/routing/builder.rb
+++ b/actionpack/lib/action_controller/routing/builder.rb
@@ -159,7 +159,8 @@ module ActionController
         path = "/#{path}" unless path[0] == ?/
         path = "#{path}/" unless path[-1] == ?/
 
-        path = "/#{options[:path_prefix].to_s.gsub(/^\//,'')}#{path}" if options[:path_prefix]
+        prefix = options[:path_prefix].to_s.gsub(/^\//,'')
+        path = "/#{prefix}#{path}" unless prefix.blank?
 
         segments = segments_for_route_path(path)
         defaults, requirements, conditions = divide_route_options(segments, options)
diff --git a/actionpack/lib/action_controller/routing/recognition_optimisation.rb b/actionpack/lib/action_controller/routing/recognition_optimisation.rb
index ebc553512f..9bfebff0c0 100644
--- a/actionpack/lib/action_controller/routing/recognition_optimisation.rb
+++ b/actionpack/lib/action_controller/routing/recognition_optimisation.rb
@@ -98,7 +98,6 @@ module ActionController
           if Array === item
             i += 1
             start = (i == 1)
-            final = (i == list.size)
             tag, sub = item
             if tag == :dynamic
               body += padding + "#{start ? 'if' : 'elsif'} true\n"
diff --git a/actionpack/lib/action_controller/routing/segments.rb b/actionpack/lib/action_controller/routing/segments.rb
index 129e87c139..4f936d51d2 100644
--- a/actionpack/lib/action_controller/routing/segments.rb
+++ b/actionpack/lib/action_controller/routing/segments.rb
@@ -3,7 +3,11 @@ module ActionController
     class Segment #:nodoc:
       RESERVED_PCHAR = ':@&=+$,;'
       SAFE_PCHAR = "#{URI::REGEXP::PATTERN::UNRESERVED}#{RESERVED_PCHAR}"
-      UNSAFE_PCHAR = Regexp.new("[^#{SAFE_PCHAR}]", false, 'N').freeze
+      if RUBY_VERSION >= '1.9'
+        UNSAFE_PCHAR = Regexp.new("[^#{SAFE_PCHAR}]", false).freeze
+      else
+        UNSAFE_PCHAR = Regexp.new("[^#{SAFE_PCHAR}]", false, 'N').freeze
+      end
 
       # TODO: Convert :is_optional accessor to read only
       attr_accessor :is_optional
@@ -314,13 +318,17 @@ module ActionController
       end
     
       def regexp_chunk
-        '(\.[^/?\.]+)?'
+        '/|(\.[^/?\.]+)?'
       end
     
       def to_s
         '(.:format)?'
       end
-    
+
+      def extract_value
+        "#{local_name} = options[:#{key}] && options[:#{key}].to_s.downcase"
+      end
+
       #the value should not include the period (.)
       def match_extraction(next_capture)
         %[