Is it possible to test a macro argument?

["Oren Ben-Kiki" <oren@xxxxxxxxxxxxx>]

I've tried to do:

<xsl:macro name="MyMacro>
    <xsl:macro-arg name="MyArg"/>
    <xsl:choose>
        <xsl:when test="arg(MyArg)=1">
            <xsl:text>First</xsl:text>
        </xsl:when>
        <xsl:when test="arg(MyArg)=2">
            <xsl:text>Second</xsl:text>
        </xsl:when>
    </xsl:choose>
</xsl:macro>

But XT (the latest) has sternly refused to accept it. From reading the
latest draft, it seems that the 'test' attribute of <xsl:when> is a select
pattern, only the 'select' attribute of <xsl:value-of> is a string
expression.

There's an editorial note indicating the name 'test' isn't final, and that
maybe it should be a match pattern instead of a select pattern. I feel that
a match pattern isn't enough - testing macro arguments is really something
which should be possible. Constants, too. Maybe we need to define a separate
test expression?

I also find it strange that 'expr' was changed to 'select'. It would have
been nice if each 'select' was a select pattern, each 'match' was a match
pattern, each 'test' was a test expression, and each 'expr' was a string
expression... I suppose there was a good reason for this rename - could
someone post it?

Another question: for each template processing mode, there's an implicit:

<xsl:template match="*|/" mode="the-mode">
<xsl:apply-templates/>
</xsl:template>

Shouldn't it be:

<xsl:template match="*|/" mode="the-mode">
<xsl:apply-templates mode="the-mode"/>
</xsl:template>

Instead? It easy enough to work around, but strange. Is this intentional?

Share & Enjoy,

    Oren Ben-Kiki


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