[xsl] Unicode question

Hi out there,

 

I have a problem that is Unicode related. Some Unicode characters (for instance 
emojis) can have some code *following* the actual character to indicate a 
variant. For instance in the following stylesheet, the emoji character in $x 
(U+1F61C) is followed by U+DE1C. When I look in oXygen it shows me this. But 
when I run the stylesheet it reports a string length of 1 and only a single 
codepoint. 

 

I suppose that is true, it is only  single character. But how can I find out 
(in XPath) what the value of the second “character” (indicator?) is? Or is that 
impossible anyway?

 

Thanks,

Erik Siegel

 

PS Running this in the latest oXygen using Saxon 9.8.

 





<?xml version="1.0" encoding="UTF-8"?>

<xsl:stylesheet version="3.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"; 
xmlns:xs="http://www.w3.org/2001/XMLSchema"; expand-text="true">

 

  <xsl:template match="/">

    <xsl:variable name="x" as="xs:string" select="'😜'"/>

    <test length="{string-length($x)}">{ string-to-codepoints($x) }</test>

  </xsl:template>

 

</xsl:stylesheet>
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