Fwds Compat/Fallback Conformance Puzzles

What is the expected behavior of a conformant processor when given each of
the following:

1.
<y xsl:version="1.1">
	<xsl:for-each select="//author">
		<xsl:sort-1.1 select="first-name">
			<xsl:fallback>
				<xsl:sort select="last-name"/>
			</xsl:fallback>
		</xsl:sort-1.1>
	</xsl:for-each>
</y>

2.
<y xsl:version="1.1">
	<xsl:text>
		Some text
		<xsl:nbsp>
			<xsl:fallback>
				Fallback text
			</xsl:fallback>
		</xsl:nbsp>
		More text
	</xsl:text>
</y>

3.
<y xsl:version="1.1">
	<xsl:apply-templates>
		<xsl:positional-param-1.1 select="foo">
			<xsl:fallback>
				<xsl:with-param name="foo" select="foo"/>
			</xsl:fallback>
		</xsl:positional-param-1.1>
	</xsl:apply-templates>
</y>

4.
<y xsl:version="1.1">
	<xsl:apply-imports>
		<xsl:with-param name="foo" select="foo">
			<xsl:fallback/>
		</xsl:with-param>
	</xsl:apply-imports>
</y>


Thanks for any opinions, authoritative or otherwise...

Andy Kimball
MSXSL Dev


 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list