[xsl] what does xsl:sort do if "select" doesn't evaluate to anything?

Subject: [xsl] what does xsl:sort do if "select" doesn't evaluate to anything?
From: "Robert P. J. Day" <rpjday@xxxxxxxxxxxxxx>
Date: Tue, 18 Mar 2003 23:10:22 -0500 (EST)
  what is the defined behavior for <xsl:sort> if the "select="
expression is not satisfied by anything?

  eg., i want to process a bunch of <car> elements, sorted by their
engine <displacement> values, but some of the <car> elements have no
such element?

  i read kay pretty carefully, but his section on xsl:sort didn't
appear to address that specific issue.

rday


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