Use XSLT to mark up text matching regex?

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I am trying to use XSLT 2.0 (Saxon-PE 9.6) on an HTML document to create tags that surround all contiguous runs of characters from a specified non-Latin Unicode block (space

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梦如初夏

2021-01-20 00:39

Complementing the previous answers, you might like to note that you can write \p{IsDevanagari} in place of [ऀ-ॿ]

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离开以前

2021-01-20 00:40
This should work (some comments after the code):

XSLT 2.0
```
<xsl:analyze-string select="$textValue" regex="([&#x0900;-&#x097f;]+)((\s+[&#x0900;-&#x097f;]+)*)">
    <xsl:matching-substring>
          <span xml:lang="hi-Deva"><xsl:value-of select="regex-group(1)"/><xsl:value-of select="regex-group(2)"/></span>
    </xsl:matching-substring>
    <xsl:non-matching-substring>
          <xsl:value-of select="."/>
    </xsl:non-matching-substring>
</xsl:analyze-string>
```
- the regex is the one from your second try (as it was correctly matching only the Hindi text fragments!), just with parentheses around the first part
- the matching-substring branch puts the span around the Hindi text
- the non-matching-substring branch just returns the unmodified "normal" text substring (you were returning the whole text!)
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忘掉有多难

2021-01-20 01:00

I came up with http://xsltransform.net/jyH9rMo which just does

<?xml version="1.0" encoding="UTF-8" ?>
<xsl:transform xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="2.0">
    <xsl:output method="html" doctype-public="XSLT-compat" omit-xml-declaration="yes" encoding="UTF-8" indent="yes" />

    <xsl:template match="/">
      <hmtl>
        <head>
          <title>New Version!</title>
        </head>
        <xsl:apply-templates/>
      </hmtl>
    </xsl:template>

    <xsl:template match="@*|node()">
        <xsl:copy>
            <xsl:apply-templates select="@*|node()"/>
        </xsl:copy>
    </xsl:template>

    <xsl:template match="text()">
   <xsl:analyze-string select="." regex="([&#x0900;-&#x097f;]+)((\s+[&#x0900;-&#x097f;]+)*)">

    <xsl:matching-substring>
      <span xml:lang="hi-Deva"><xsl:value-of select="."/></span>
    </xsl:matching-substring>

    <xsl:non-matching-substring>
      <xsl:value-of select="."/>
    </xsl:non-matching-substring>

  </xsl:analyze-string>       
    </xsl:template>
</xsl:transform>

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