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@@ -98,6 +98,8 @@ application. Accepts a valid week day symbol (e.g. `:monday`).
* `config.exceptions_app` sets the exceptions application invoked by the ShowException middleware when an exception happens. Defaults to `ActionDispatch::PublicExceptions.new(Rails.public_path)`.
+* `config.debug_exception_response_format` sets the format used in responses when errors occur in development mode.
+
* `config.file_watcher` is the class used to detect file updates in the file system when `config.reload_classes_only_on_change` is true. Rails ships with `ActiveSupport::FileUpdateChecker`, the default, and `ActiveSupport::EventedFileUpdateChecker` (this one depends on the [listen](https://github.com/guard/listen) gem). Custom classes must conform to the `ActiveSupport::FileUpdateChecker` API.
* `config.filter_parameters` used for filtering out the parameters that