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Re: handling tags and PIs within a macro

Subject: Re: handling tags and PIs within a macro
From: David Carlisle <davidc@xxxxxxxxx>
Date: Tue, 23 Oct 2007 16:02:55 +0100
Re:  handling tags and PIs within a macro
> Macros in our documentation are similar to entities.

The difference is that the syntax used for macros in that system means
that the resulting file is not XML. XML files can not have a < in
attribute values. As the file is not XML it can't be parsed by an XML
parser or used by XML tools such as XSLT.

Your terminoligy is double confusing in an XMl context as you have
called them "processing instructions" but in XML PIs always have the
syntax <?...?> (and also can not appear in attribute values).

If you have control over the design of the input it would be better to
use an XML compatible syntax. For instance XSLT needs to allow XPath
expressions to be evaluated in attribute values, it can't allow

<foo id="<xsl:value-of select="@id"/>">

as that is not XML so it uses {} notation

<foo id="{@id}">

with an XSLT-specific rule that says {} denotes Xpath expressions to be
evaluated in a literal result element's attribute.

David


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