Although I see nothing to recommend it above xsl:result-document in this
case, for the sake of completeness I mention xsl:character-map.

<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

  <xsl:param name="doctype-name" select="'doc'"/>
  <xsl:param name="dtd-path" select="'my-document.dtd'"/>
  
  <xsl:character-map name="markup">
    <xsl:output-character character="&#x27E8;" string="&lt;"/>
    <xsl:output-character character="&#x27E9;" string="&gt;"/>
  </xsl:character-map>

  <xsl:output method="xml" indent="yes" use-character-maps="markup"/>

  <xsl:template match="/">
    <xsl:text>&#10;&#x27E8;!DOCTYPE </xsl:text>
    <xsl:value-of select="$doctype-name"/>
    <xsl:text> "</xsl:text>
    <xsl:value-of select="$dtd-path"/>
    <xsl:text>"&#x27E9;&#10;</xsl:text>
    <doc>I'm a document</doc>
  </xsl:template>
  
</xsl:stylesheet>


On Wed, 2019-05-15 at 15:15 +0000, Trevor Nicholls
trevor@xxxxxxxxxxxxxxxxxx wrote:
> Well you learn something every day. I have used result-document in the
> POST-processor stylesheet to split the document apart but I had
> absolutely no idea that - without an href - it could be used to define
> the primary output. It works just the way I needed it to.
> 
>  
> 
> Thank you very much
> 
>  
> 
> cheers
> 
> T
> 
>  
> 
> From: Michael Kay mike@xxxxxxxxxxxx
> <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> 
> Sent: Wednesday, 15 May 2019 19:07
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: Re:  Dynamic DTD declaration in output
> 
> 
>  
> 
> In XSLT 2.0 you can do:
> 
>  
> 
> 
> <xsl:template match="/">
> 
> 
>   <xsl:result-document doctype-system="{$DefaultDTDPath}" method="xml"
> encoding="utf-8">
> 
> 
>     ....
> 
> 
>   </xsl:result-document>
> 
> 
> </xsl:template>
> 
> 
>  
> 
> 
> Michael Kay
> 
> 
> Saxonica
> 
> 
> 
>         On 15 May 2019, at 06:45, Trevor Nicholls
>         trevor@xxxxxxxxxxxxxxxxxx
>         <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:
>         
>         
>          
>         
>         Hi
>         
>         
>          
>         
>         
>         I've got a simple stylesheet which is executed as a
>         pre-process when XML documents are loaded into FrameMaker. At
>         the moment the stylesheet includes the line
>         
>         
>          
>         
>         
>             <xsl:output doctype-system="/path/to/docs.dtd"
>         method="xml" encoding="UTF-8" />
>         
>         
>          
>         
>         
>         Because this stylesheet will be used by different users in
>         several different contexts, it would be brilliant if the path
>         to the DTD could be parameterised. I know the following is
>         invalid but the purpose of this post is to ask if there is any
>         way of engineering an equivalent:
>         
>         
>          
>         
>         
>             <xsl:param name="DefaultDTDPath" />
>         
>         
>             <xsl:output doctype-system="{$DefaultDTDPath}"
>         method="xml" encoding="UTF-8" />
>         
>         
>          
>         
>         
>         XSL version has to be 1.0 or 2.0.
>         
>         
>          
>         
>         
>         Thanks
>         
>         
>         T
>         
>         
>          
>         
>         
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