Only include builtin filters whose filenames match /^[a-z][a-z_]*_helper.rb$/ to avoid including operating system metadata such as ._foo_helper.rb. References #2855.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@3007 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

actionpack/CHANGELOG

@@ -1,5 +1,7 @@
 *SVN*
 
+* Only include builtin filters whose filenames match /^[a-z][a-z_]*_helper.rb$/ to avoid including operating system metadata such as ._foo_helper.rb.  #2855 [court3nay@gmail.com]
+
 * Added FormHelper#form_for and FormHelper#fields_for that makes it easier to work with forms for single objects also if they don't reside in instance variables [DHH]. Examples:
 
   <% form_for :person => @person, :url => { :action => "update" } do |f| %>

actionpack/lib/action_view/base.rb

@@ -157,13 +157,12 @@ module CompiledTemplates #:nodoc:
 
     class ObjectWrapper < Struct.new(:value) #:nodoc:
     end
-    
+
     def self.load_helpers(helper_dir)#:nodoc:
       Dir.foreach(helper_dir) do |helper_file| 
-        next unless helper_file =~ /_helper.rb$/
-        require helper_dir + helper_file
-        helper_module_name = helper_file.capitalize.gsub(/_([a-z])/) { |m| $1.capitalize }[0..-4]
-
+        next unless helper_file =~ /^([a-z][a-z_]*_helper).rb$/
+        require File.join(helper_dir, $1)
+        helper_module_name = $1.camelize
         class_eval("include ActionView::Helpers::#{helper_module_name}") if Helpers.const_defined?(helper_module_name)
       end
     end