Rename behaviour to behavior in documentation

actioncable/lib/action_cable/connection/stream.rb

@@ -98,7 +98,7 @@ module ActionCable
 
         # This should return the underlying io according to the SPEC:
         @rack_hijack_io = @socket_object.env["rack.hijack"].call
-        # Retain existing behaviour if required:
+        # Retain existing behavior if required:
         @rack_hijack_io ||= @socket_object.env["rack.hijack_io"]
 
         @event_loop.attach(@rack_hijack_io, self)

actionpack/CHANGELOG.md

@@ -28,7 +28,7 @@
 *   Add the ability to use custom logic for storing and retrieving CSRF tokens.
 
     By default, the token will be stored in the session.  Custom classes can be
-    defined to specify arbitrary behaviour, but the ability to store them in
+    defined to specify arbitrary behavior, but the ability to store them in
     encrypted cookies is built in.
 
     *Andrew Kowpak*

actionpack/lib/action_controller/metal/helpers.rb

@@ -80,7 +80,7 @@ module ActionController
       # Provides a proxy to access helper methods from outside the view.
       #
       # Note that the proxy is rendered under a different view context.
-      # This may cause incorrect behaviour with capture methods. Consider
+      # This may cause incorrect behavior with capture methods. Consider
       # using {helper}[rdoc-ref:AbstractController::Helpers::ClassMethods#helper]
       # instead when using +capture+.
       def helpers

actionpack/lib/action_controller/metal/request_forgery_protection.rb

@@ -139,7 +139,7 @@ module ActionController # :nodoc:
       #      end
       #
       #      def handle_unverified_request
-      #        # Custom behaviour for unverfied request
+      #        # Custom behavior for unverfied request
       #      end
       #    end
       #

actionpack/lib/action_controller/metal/strong_parameters.rb

@@ -275,7 +275,7 @@ module ActionController
             comparisons between instances of `ActionController::Parameters`. If
             you need to compare to a hash, first convert it using
             `ActionController::Parameters#new`.
-            To disable the deprecated behaviour set
+            To disable the deprecated behavior set
             `Rails.application.config.action_controller.allow_deprecated_parameters_hash_equality = false`.
           WARNING
           @parameters == other

actionview/lib/action_view/helpers/url_helper.rb

@@ -595,7 +595,7 @@ module ActionView
         # We ignore any extra parameters in the request_uri if the
         # submitted URL doesn't have any either. This lets the function
         # work with things like ?order=asc
-        # the behaviour can be disabled with check_parameters: true
+        # the behavior can be disabled with check_parameters: true
         request_uri = url_string.index("?") || check_parameters ? request.fullpath : request.path
         request_uri = URI::DEFAULT_PARSER.unescape(request_uri).force_encoding(Encoding::BINARY)
 

activejob/CHANGELOG.md

@@ -24,7 +24,7 @@
     was called before calling `perform_now`. When a record no longer exists
     and is serialized using GlobalID this led to raising
     an `ActiveJob::DeserializationError` before reaching `perform_now` call.
-    This behaviour makes difficult testing the job `discard_on/retry_on` logic.
+    This behavior makes difficult testing the job `discard_on/retry_on` logic.
 
     Now `deserialize_arguments_if_needed` call is postponed to when `perform_now`
     is called.

activerecord/lib/active_record/inheritance.rb

@@ -116,7 +116,7 @@ module ActiveRecord
       # true.
       # +ApplicationRecord+, for example, is generated as an abstract class.
       #
-      # Consider the following default behaviour:
+      # Consider the following default behavior:
       #
       #   Shape = Class.new(ActiveRecord::Base)
       #   Polygon = Class.new(Shape)

activerecord/test/cases/validations/numericality_validation_test.rb

@@ -114,7 +114,7 @@ class NumericalityValidationTest < ActiveRecord::TestCase
     if 123.455.to_d(5) == BigDecimal("123.46")
       # BigDecimal's to_d behavior changed in BigDecimal 3.0.1, see https://github.com/ruby/bigdecimal/issues/70
       # TODO: replace this with a check against BigDecimal::VERSION, currently
-      # we just check the behaviour because both versions of BigDecimal report "3.0.0"
+      # we just check the behavior because both versions of BigDecimal report "3.0.0"
       assert_not_predicate subject, :valid?
     else
       assert_predicate subject, :valid?

guides/source/5_2_release_notes.md

@@ -792,7 +792,7 @@ Please refer to the [Changelog][active-support] for detailed changes.
     `ActiveSupport::TimeZone::MAPPING`.
     ([Pull Request](https://github.com/rails/rails/pull/31176))
 
-*   Changed default behaviour of `ActiveSupport::SecurityUtils.secure_compare`,
+*   Changed default behavior of `ActiveSupport::SecurityUtils.secure_compare`,
     to make it not leak length information even for variable length string.
     Renamed old `ActiveSupport::SecurityUtils.secure_compare` to
     `fixed_length_secure_compare`, and started raising `ArgumentError` in

guides/source/active_record_querying.md

@@ -418,7 +418,7 @@ end
 as long as they have no ordering, since the method needs to force an order
 internally to iterate.
 
-If an order is present in the receiver the behaviour depends on the flag
+If an order is present in the receiver the behavior depends on the flag
 [`config.active_record.error_on_ignored_order`][]. If true, `ArgumentError` is
 raised, otherwise the order is ignored and a warning issued, which is the
 default. This can be overridden with the option `:error_on_ignore`, explained

guides/source/active_storage_overview.md

@@ -606,7 +606,7 @@ rails_blob_path(user.avatar, disposition: "attachment")
 ```
 
 WARNING: To prevent XSS attacks, Active Storage forces the Content-Disposition header
-to "attachment" for some kind of files. To change this behaviour see the
+to "attachment" for some kind of files. To change this behavior see the
 available configuration options in [Configuring Rails Applications](configuring.html#configuring-active-storage).
 
 If you need to create a link from outside of controller/view context (Background

guides/source/configuring.md

@@ -1165,7 +1165,7 @@ the top level, or on individual controllers.
 
 #### `config.action_controller.allow_deprecated_parameters_hash_equality`
 
-Controls behaviour of `ActionController::Parameters#==` with `Hash` arguments.
+Controls behavior of `ActionController::Parameters#==` with `Hash` arguments.
 Value of the setting determines whether an `ActionController::Parameters` instance is equal to an equivalent `Hash`.
 
 The default value depends on the `config.load_defaults` target version:

guides/source/upgrading_ruby_on_rails.md

@@ -639,10 +639,10 @@ end
 get('my_action.csv')
 ```
 
-Previous behaviour was returning a `text/csv` response's Content-Type which is inaccurate since a JSON response is being rendered.
-Current behaviour correctly returns a `application/json` response's Content-Type.
+Previous behavior was returning a `text/csv` response's Content-Type which is inaccurate since a JSON response is being rendered.
+Current behavior correctly returns a `application/json` response's Content-Type.
 
-If your application relies on the previous incorrect behaviour, you are encouraged to specify
+If your application relies on the previous incorrect behavior, you are encouraged to specify
 which formats your action accepts, i.e.
 
 ```ruby

railties/lib/rails/generators/testing/behavior.rb

@@ -108,7 +108,7 @@ module Rails
           end
       end
 
-      Behaviour = ActiveSupport::Deprecation::DeprecatedConstantProxy.new("Behaviour", "Behavior")
+      Behaviour = ActiveSupport::Deprecation::DeprecatedConstantProxy.new("behavior", "Behavior")
     end
   end
 end