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Re: can't get my RSS to validate - Help!!

From: dingbat@----------.--- (---- -------)
To: NULL
Date: 5/24/2004 4:09:00 AM
lkrubner@g... (lawrence) wrote in message news:<da7e68e8.0405221211.29ab7b56@p...>...

> I'm stumped when I think of all the possible user inputs that can mess
> up an RSS feed. 

Can't be done.  Never was possible - users are just too inventive.

Instead, look at it the other way. Find the set of all things that are
_valid_ RSS and exclude anything else.  This is a smaller set than the
invalid stuff, and it's better documented. If you _only_ allow the
valid sequences, then you have implicitly forbidden all the invalid
stuff.

Definitely read this
http://diveintomark.org/archives/2004/02/04/incompatible-rss


> It's true that I could write filters for each possible problem as it
> comes up, 

No, you can't. You might possibly manage to do it for one day, but
there will always be something new coming along tomorrow. Take it the
other way.


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