Merge pull request #4637 from railsaholic/error_message_fix
quote fix ` to ' in the ArgumentError message
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29aa20daa6
@ -63,7 +63,7 @@ def instantiate_observers
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# raises an +ArgumentError+ exception.
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def add_observer(observer)
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unless observer.respond_to? :update
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raise ArgumentError, "observer needs to respond to `update'"
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raise ArgumentError, "observer needs to respond to 'update'"
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end
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observer_instances << observer
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end
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