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Re: Asymmetric string handling with processing-instru

Subject: Re: Asymmetric string handling with processing-instructions
From: "Martin Honnen martin.honnen@xxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>
Date: Thu, 14 Sep 2023 16:08:41 -0000
Re:  Asymmetric string handling with  processing-instru
On 14.09.2023 17:27, Martin Honnen martin.honnen@xxxxxx wrote:
> On 14.09.2023 16:05, Michael Mueller-Hillebrand
> michael.mueller-hillebrand@xxxxxxxxx wrote:
>> My bottom line: If you want to use saxon:get-pseudo-attribute(),
>> because it is elegant and efficient, and it could be possible you
>> have user content in processing instruction, you have two additional
>> tasks:
>> * When using xsl:processing-instruction or other ways to create
>> processing instructions, make sure to escape the five XML characters
>> * When accessing PI string values without saxon:get-pseudo-attribute,
>> add an unescaping routine to avoid double escaped content.
>> How do you deal with this asymmetry?
> For the escaping in your sample, one way to ensure the ampersand is
> escaped could be
> B B B  <xsl:template match="p">
> B B B B B B B  <xsl:processing-instruction name="my" select="'value=&quot;'
> || string() => serialize(map { 'method' : 'xml' }) || '&quot;'"/>
> B B B  </xsl:template>
> Should also work for the less than sign but probably not for double
> quotes.

For the string value using `parse-xml-fragment` should help e.g.

 B B  <xsl:template match="processing-instruction(my)">

 B B B B B B B  <p>

 B B B B B B B B B B B  <xsl:text>String: </xsl:text>

 B B B B B B B B B B B  <xsl:value-of select="string(.) =>

 B B B B B B B  </p>


<p>String: value="Marks &amp; Spencer PI"</p>

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