Re: [xslt] confusing error message "function format-date bound to undefined prefix date"

On Tue, Mar 24 2009 09:50:05 +0000, mlu as-guides com wrote:
> Viktor Stujber schrieb:
>> Greetings. We had some trouble when modifying our presentation layer
>> to use (e)xslt date formatting. The problematic code looked like this:
>> <xsl:value-of select="date:format-date(str:replace($date, ' ', 'T'),
>> 'HH:mm:ss | dd. MMMM, yy')"/>
>> This line worked on its author's test setup, which used an older
>> libxslt version. But when deployed on our webserver, it started
>> throwing errors:
>> xmlXPathCompOpEval: function format-date bound to undefined prefix date
>> xmlXPathCompiledEval: 1 objects left on the stack.
> First, the error message strongly suggests you haven't bound the prefix
> "date" to a namespace. As a consequence, the XPath expression cannot be
> compiled.

The other thing to check is that the namespace prefix is also used in
the value of the "extension-element-prefixes" attribute of
xsl:stylesheet [1].  It's a quirk of libxslt that you need to register
namespaces for extension functions this way.


Tony Graham                         Tony Graham MenteithConsulting com
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Menteith Consulting Ltd
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