Null Attributes Break xsl:key?

Subject: Null Attributes Break xsl:key?
From: Bill Entwistle <ent@xxxxxxxxx>
Date: Mon, 05 Jun 2000 18:40:44 -0500
Are null attribute values legal in XML?  As in, for example:

	<some-element some-attribute=""/>

If so, then the following looks like a Xalan bug.  I would love
to find out otherwise, or be given a workaround for this problem.
I discovered that if you have a null attribute in your XML, then
the xsl:key instruction fails to create any keys after the
element with the null attribute.  For example, if I process the
following XML:

			<id code="1672"/>
			<bonus amount=""/>
			<id code="2035"/>
			<bonus amount=""/>

with the following script:

	<xsl:stylesheet xmlns:xsl="";

	<xsl:key name="Codes" match="person" use="id/@code"/>

	<xsl:template match="/">
		<xsl:copy-of select="key('Codes','1672')"/>
		<xsl:copy-of select="key('Codes','2035')"/>


then it outputs the first node set, but fails to output the second.
If I stick anything into the attribute fields to make them non-null,
then the script works as expected and outputs both node sets.

I tried to contact Apache about this, but they apparently don't allow
mere users to access their bug reporting website and they don't
publish their phone number.

Thanks for any help,


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