[xsl] Attributes disappear in XHTML output

Subject: [xsl] Attributes disappear in XHTML output
From: "Mark Giffin m1879@xxxxxxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>
Date: Fri, 30 Aug 2019 06:47:11 -0000
When I do the following simple XHTML output, I can get any attribute I want in the XHTML output:

XML input:
<x>
B  <p>Here is my text.</p>
</x>

XSLT:
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
B B B xmlns:xs="http://www.w3.org/2001/XMLSchema";
B B B exclude-result-prefixes="xs"
B B B version="2.0">
B B B <xsl:output method="xml" encoding="utf-8" indent="yes"
doctype-system="http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd";
B B B B B B B doctype-public="-//W3C//DTD XHTML 1.0 Transitional//EN"
B B B />
B B B <xsl:template match="/">
B B B B B B B <html> <body>
B B B B B B B B B B B B B B B <span class="myclass" data-toggle="tooltip" data-placement="bottom">
B B B B B B B B B B B B B B B B B B B <xsl:apply-templates/>
B B B B B B B B B B B B B B B </span>
B B B B B B B B B B B </body></html>
B B B </xsl:template>
</xsl:stylesheet>


But when I run XHTML output with the DITA Open Toolkit v.3.3.2 using this:

B B B B B <span class="myclass" data-toggle="tooltip" data-placement="bottom">
B B B B B B B <xsl:apply-templates select="." mode="output-term">
B B B B B B B B B <xsl:with-param name="displaytext" select="normalize-space($displaytext)"/>
B B B B B B B </xsl:apply-templates>
B B B B B </span>


only the @class attribute appears in the output. The data-* attributes are dropped. I've tried using <xsl:attribute> instead of literal text, same result. What would cause this?

Thanks,
Mark

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