rails/rails — pull request #11935 by phillipalexander (2013-08-19 04:55:08+00:00)
Title: Fix default values of arguments to follow Rails convention

Fix default spacing in actionmailer delivery methods
```ruby
def add_delivery_method(symbol, klass, default_options = {})
class_attribute(:"#{symbol}_settings") unless respond_to?(:"#{symbol}_settings")
send(:"#{symbol}_settings=", default_options)
self.delivery_methods = delivery_methods.merge(symbol.to_sym => klass).freeze
end

def wrap_delivery_behavior(mail, method = nil, options = nil) # :nodoc:
method ||= self.delivery_method
mail.delivery_handler = self

case method
when NilClass
raise "Delivery method cannot be nil"
when Symbol
if klass = delivery_methods[method]
mail.delivery_method(klass,(send(:"#{method}_settings") || {}).merge!(options || {}))
else
raise "Invalid delivery method #{method.inspect}"
end
else
mail.delivery_method(method)
end

mail.perform_deliveries = perform_deliveries
mail.raise_delivery_errors = raise_delivery_errors
end
```