Update load once paths to prevent nested once constants from being detected and claimed by an external non-once load. References #6720

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@5782 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activesupport/CHANGELOG

@@ -1,5 +1,7 @@
 *SVN*
 
+* Update load once paths to prevent nested once constants from being detected and claimed by an external non-once load. [Nicholas Seckar]
+
 * Deprecation: silence warnings when reporting test errors.  [Jeremy Kemper]
 
 * Hash#slice(*keys) returns a new hash with only the given keys. #slice! replaces the hash with only the given keys. Works with HashWithIndifferentAccess also.  [Jeremy Kemper]

activesupport/lib/active_support/dependencies.rb

@@ -130,7 +130,7 @@ module Dependencies #:nodoc:
   # Given +path+, a filesystem path to a ruby file, return an array of constant
   # paths which would cause Dependencies to attempt to load this file.
   # 
-  def loadable_constants_for_path(path, bases = load_paths - load_once_paths)
+  def loadable_constants_for_path(path, bases = load_paths)
     path = $1 if path =~ /\A(.*)\.rb\Z/
     expanded_path = File.expand_path(path)
     
@@ -169,6 +169,10 @@ module Dependencies #:nodoc:
     nil
   end
   
+  def load_once_path?(path)
+    load_once_paths.any? { |base| path.starts_with? base }
+  end
+  
   # Attempt to autoload the provided module name by searching for a directory
   # matching the expect path suffix. If found, the module is created and assigned
   # to +into+'s constants with the name +const_name+. Provided that the directory
@@ -200,7 +204,7 @@ module Dependencies #:nodoc:
       result = load_without_new_constant_marking path
     end
     
-    autoloaded_constants.concat newly_defined_paths
+    autoloaded_constants.concat newly_defined_paths unless load_once_path?(path)
     autoloaded_constants.uniq!
     log "loading #{path} defined #{newly_defined_paths * ', '}" unless newly_defined_paths.empty?
     return result