[Zope3-dev] Re: Message id's text interpolation

[Philipp von Weitershausen]

Dmitry Vasiliev wrote:
> Currently variables inside the message id's text substituted to None if
> variable name hadn't found in the mapping, like this:
> 
>   >>> from zope.i18nmessageid import Message
>   >>> from zope.i18n import translate
>   >>> message = Message("some text ${variable}", mapping={"typo":
> "variable"})
>   >>> translate(message)
>   u'some text None'
> 
> but:
> 
>   >>> message = Message("some text ${variable}")
>   >>> translate(message)
>   u'some text ${variable}'
> 
> Would it to be better if no substitution will happens if variable name
> hasn't found in the mapping? So instead of u'some text None' we'll
> always get u'some text ${variable}'. I think it would be better for
> debugging purposes and also we'll get some optimizations in case of the
> empty mapping (seems like the ZPT engine always pass empty dictionary as
> default value for the mapping) for free.

+1