"subhash" --> "sub-hash"

actionpack/lib/action_dispatch/http/filter_parameters.rb

@@ -6,8 +6,8 @@ module ActionDispatch
   module Http
     # Allows you to specify sensitive parameters which will be replaced from
     # the request log by looking in the query string of the request and all
-    # subhashes of the params hash to filter. If a block is given, each key and
-    # value of the params hash and all subhashes is passed to it, the value
+    # sub-hashes of the params hash to filter. If a block is given, each key and
+    # value of the params hash and all sub-hashes is passed to it, the value
     # or key can be replaced using String#replace or similar method.
     #
     #   env["action_dispatch.parameter_filter"] = [:password]

activesupport/test/core_ext/hash_ext_test.rb

@@ -635,7 +635,7 @@ class HashExtTest < ActiveSupport::TestCase
     assert_equal 1, h['first']
   end
 
-  def test_indifferent_subhashes
+  def test_indifferent_sub_hashes
     h = {'user' => {'id' => 5}}.with_indifferent_access
     ['user', :user].each {|user| [:id, 'id'].each {|id| assert_equal 5, h[user][id], "h[#{user.inspect}][#{id.inspect}] should be 5"}}
 

guides/source/action_controller_overview.md

@@ -260,7 +260,7 @@ used:
 params.require(:log_entry).permit!
 ```
 
-This will mark the `:log_entry` parameters hash and any subhash of it
+This will mark the `:log_entry` parameters hash and any sub-hash of it
 permitted. Extreme care should be taken when using `permit!` as it
 will allow all current and future model attributes to be
 mass-assigned.