Microsoft’s RSS Team: “Feeds and well-formed XML”
Hence, we’ve adopted the following overriding principle for IE 7 and RSS platform in Windows Vista:
We will only support feeds that are well-formed XML.
Funnily enough, their own Atom feed does not validate, according to feedvalidator.org (the RSS feed does).
I do realize that well-formedness and validation aren’t the same, and both XML files do seem well-formed. But if they have well-formedness as a goal for a very simple reason:
This principle allows us to build a more predictable feed parser.
… , then why not make that feed parser even more predictable by requiring validation as well?
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