On Thu, Aug 19, 2010 at 10:16 AM, Paul Gilbert
<pgilb...@bank-banque-canada.ca> wrote:
> I used to get caught by this c() behaviour often, but now I do expect it to 
> drop attributes. I think it would break many things if you change it, and 
> force people to write different code when they really do want to drop 
> attributes. When you want new behaviour it is usually better to define a new 
> function, ca() maybe?
>

That would work if ca defaulted to c for those classes that did not
supply a ca method.

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