Description:
------------
during transformation to XML attribute "selected" always set to empty string.
That might be ok for trasformation to HTML, but for XML it's wrong.

If I rename attribute - all works as expected.
Also on earlier version selected works just fine.

 

Test script:
---------------
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:output method="xml" encoding="utf-8" indent="no"/>
    <xsl:template name="selectTemplate">
        <select>
           <option value="123" selected="selected">value</option>
        </select>
    </xsl:template>
</xsl:stylesheet>

Expected result:
----------------
Correct XHTML will be

<select>
    <option value="123" selected="selected">value</option>
</select>

or at least it should be correct HTML5

<select>
    <option value="123" selected>value</option>
</select>

Actual result:
--------------
<select>
   <option value="123" selected="">value</option>
</select>

Firefox treat this element as NOT selected