More understandable warning in the local_constant_names section

Rewrite the warning about local_constant_names in Ruby 1.8 to make it more understandable. Word ordering fixes in the same section.

1 files changed, 2 insertions, 2 deletions

diff --git a/railties/guides/source/active_support_core_extensions.textile b/railties/guides/source/active_support_core_extensions.textile
index 5aee001545..addf5f78be 100644
--- a/railties/guides/source/active_support_core_extensions.textile
+++ b/railties/guides/source/active_support_core_extensions.textile
@@ -719,9 +719,9 @@ X.local_constants    # => ["X2", "X1", "Y"], assumes Ruby 1.8
 X::Y.local_constants # => ["X1", "Y1"], assumes Ruby 1.8
 </ruby>
 
-The names are returned as strings in Ruby 1.8, and as symbols in Ruby 1.9. The method +local_constant_names+ returns always strings.
+The names are returned as strings in Ruby 1.8, and as symbols in Ruby 1.9. The method +local_constant_names+ always returns strings.
 
-WARNING: This method is exact if running under Ruby 1.9. In previous versions it may miss some constants if their value in some ancestor stores the exact same object than in the receiver.
+WARNING: This method returns precise results in Ruby 1.9. In older versions of Ruby, however, it may miss some constants in case the same constant exists in the receiver module as well as in any of its ancestors and both constants point to the same object (objects are compared using +Object#object_id+).
 
 NOTE: Defined in +active_support/core_ext/module/introspection.rb+.