Duplicate and Empty Elements (O'Reilly) [LWN.net]

Bob DuCharme shows how to clean up XML data on O'Reilly's XML.com. "Any manipulation of XML documents, whether with XSLT or not, often involves cleaning up the documents. Perhaps some company sends XML data to your company, and while it may be valid XML, it still needs to be beaten into shape a bit before your systems can use it. Dealing with duplicate elements and empty elements are typical tasks of a cleanup process. Through no fault of XSLT, finding them can be a little trickier than you might at first think, but it's not too bad, and XSLT includes several features to make these cleanup tasks go more easily."

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