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Re: 1st previous node()

Subject: Re: 1st previous node()
From: "Imsieke, Gerrit, le-tex" <gerrit.imsieke@xxxxxxxxx>
Date: Tue, 08 Feb 2011 07:58:52 +0100
Re:  1st previous node()
On 2011-02-08 07:16, Karl Stubsjoen wrote:
I need help finding the first previous node, skipping white space,
comments, etc.. I thought this might work, but I can't get it or
similar tries to work.

<xsl:variable name="previous" select="preceding::node()

This can be written as

    <xsl:variable name="previous" select="preceding::node()

which will select the text node immediately preceding X.

So you could write

    <xsl:variable name="previous" select="preceding::node()

which will yield

   <?skip me?>
   <!--skip me-->

for the first example and nothing in the second (since X doesn't have a preceding element: an element has to be closed before X starts in order to qualify as preceding).

But as Patrick points out, this can of course be written as

<xsl:variable name="previous" select="preceding::*[1]"/>

You can get M in the first case and B in the second by declaring

<xsl:variable name="previous" select="(preceding-sibling::*[1], ..)[1]" />

which selects the immediately preceding sibling or, if there is no preceding sibling, the parent element.


Given that<X> is the context node then I expect the previous node is<M>.

    <?skip me?>
    <!--skip me-->
   <X>  this is context node</X>

Given that<X> is the context node then I expect the previous node is<B>.

   <X>  this is context node</X>

Karl Stubsjoen
(602) 845-0006

-- Gerrit Imsieke Geschdftsf|hrer / Managing Director le-tex publishing services GmbH Weissenfelser Str. 84, 04229 Leipzig, Germany Phone +49 341 355356 110, Fax +49 341 355356 510 gerrit.imsieke@xxxxxxxxx, http://www.le-tex.de

Registergericht / Commercial Register: Amtsgericht Leipzig
Registernummer / Registration Number: HRB 24930

Geschdftsf|hrer: Gerrit Imsieke, Svea Jelonek,
Thomas Schmidt, Dr. Reinhard Vvckler

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