Hi Dylan, > As Jeni described, you could declare it in your template with a > special default value that indicates it hasn't been set by the > importing/including transformation (I believe you would have use a > param rather than a variable to achieve this affect). I'm not saying > that a run-time test for variables/params is a major omission from > XSLT, just pointing out that there is a hypothetical use case for > such a feature. I actually meant declare it as a global variable in your stylesheet, so that it is overridden if it is declared as a global variable in the importing stylesheet. If you define it within the *template* (even as a parameter) then that local definition will override any global one, even if it's on the importing stylesheet. So if on my utility stylesheet I do: <xsl:variable name="my:var" select="'a-ridiculous-value-no-one-will-set'" /> <xsl:template name="my:template"> <xsl:choose> <xsl:when test="$my:var = 'a-ridiculous-value-no-one-will-set'"> <!-- variable has not been declared in importing stylesheet --> </xsl:when> <xsl:otherwise> <!-- variable *has* been declared in importing stylesheet --> </xsl:otherwise> </xsl:choose> </xsl:template> I hope that helps, Jeni --- Jeni Tennison http://www.jenitennison.com/ XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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