# File lib/spec/expectations/handler.rb, line 7
        def handle_matcher(actual, matcher, &block)
          ::Spec::Matchers.last_should = "should"
          return Spec::Matchers::PositiveOperatorMatcher.new(actual) if matcher.nil?

          unless matcher.respond_to?(:matches?)
            raise InvalidMatcherError, "Expected a matcher, got #{matcher.inspect}."
          end
          
          match = matcher.matches?(actual, &block)
          ::Spec::Matchers.last_matcher = matcher
          Spec::Expectations.fail_with(matcher.failure_message) unless match
          match
        end