Call include directly

Author: pirj

lib/rspec/core/configuration.rb

@@ -843,8 +843,8 @@ def expect_with(*frameworks)
 
             # Tag this exception class so our exception formatting logic knows
             # that it satisfies the `MultipleExceptionError` interface.
-            ::RSpec::Expectations::MultipleExpectationsNotMetError.__send__(
-              :include, MultipleExceptionError::InterfaceTag
+            ::RSpec::Expectations::MultipleExpectationsNotMetError.include(
+              MultipleExceptionError::InterfaceTag
             )
 
             ::RSpec::Matchers
@@ -2331,11 +2331,11 @@ def metadata_applies_to_group?(meta, group)
       end
 
       def safe_prepend(mod, host)
-        host.__send__(:prepend, mod) unless host < mod
+        host.prepend(mod) unless host < mod
       end
 
       def safe_include(mod, host)
-        host.__send__(:include, mod) unless host < mod
+        host.include(mod) unless host < mod
       end
 
       def safe_extend(mod, host)

lib/rspec/core/memoized_helpers.rb

@@ -514,7 +514,7 @@ def self.module_for(example_group)
 
       # @private
       def self.define_helpers_on(example_group)
-        example_group.__send__(:include, module_for(example_group))
+        example_group.include(module_for(example_group))
       end
 
       # @private