Andrea Aime wrote:
> Validation? Warnings? Sorry?
>   
I thought that was what you were wanting; apparently i was wrong.
> A filter like "INCLUDE and INCLUDE and EXCLUDE" is perfectly valid,
> it's just redundant. I was speaking about simplification, not validation.
>   
Okay for simplification I would like to see that handled as a filter 
visitor; ie I don't want magic to occur when you start trying to use a 
factory.
> Moreover, a wrapper cannot change the fact ff.and(...) must return and 
> And filter, whilst a smart builder would have to return Filter, generically.
>   
I understand the limitation.
> I don't know about fallbacks and stuff, but remember, we have a very
> extensive code base and adding the builder everywhere is going to
> have quite a cost (the old filter migration, still unfinished, should
> have teached us something...)
>   
Not having factories do magic was one of the things it taught us.
Jody

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