Regex seems correct, but doesn't match with XSLT - regex

Question

I have this string:
"und", 3.96036662358691, 3.3195020746888, 3.2907085875176, 3.02795262671161, 3.5162776568275, 3.6582196231319, 4.25539102528011, 2.66244838424718, 2.92641494865261, 2.76262283971535,
I want to get the first decimal and the comma afterwards (3.96036662358691,).
Therefore I'm using this regex:
(^"\w+",\s)(\d+\.\d+,)
To use the regex in XSLT, I escaped the quotes, so the regex is now:
(^"\w+",\s)(\d+\.\d+,)
A snippet from the XSLT:
<xsl:analyze-string select="." regex="(^"\w+",\s)(\d+\.\d+,)">
<xsl:matching-substring>
<xsl:value-of select="regex-group(2)"/>
</xsl:matching-substring>
</xsl:analyze-string>
I'm using Oxygen, XSLT 3.0 and Saxon-PE 11.4.
Why is my regex only matching when looking for the pattern in the file, but not when using it with XSLT?
Some more information:
This is a snippet from the XML file (with word frequencies):
<?xml version="1.0" encoding="utf-8"?><xml>"name1", "name2", "name3", "name4", "name5", "name6", "name7", "name8", "name9", "name10",
"und", 3.96036662358691, 3.3195020746888, 3.2907085875176, 3.02795262671161, 3.5162776568275, 3.6582196231319, 4.25539102528011, 2.66244838424718, 2.92641494865261, 2.76262283971535,
"sie", 1.74547291174592, 2.69105265278169, 1.79199906147349, 4.57921899704663, 2.02015087843653, 0.786224821312541, 2.4266651652497, 5.35571214331204, 1.5944714693846, 2.0382921043714,
"die", 1.87916870924135, 2.7111952624582, 2.32578601595495, 2.36866441931923, 2.16444736975343, 2.00129954515919, 2.77011429536625, 2.09749984592313, 2.3009806192572, 2.05947136563877,</xml>
This is a snippet from my XSLT so far:
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="3.0"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
exclude-result-prefixes="#all"
expand-text="yes">
<xsl:template match="*:xml/text()">
<!-- copy all words to the very top -->
<xsl:analyze-string select="." regex="("(\w+)",)">
<xsl:matching-substring>
<xsl:value-of select="."/>
</xsl:matching-substring>
</xsl:analyze-string>
<!-- copy all word frequencies for name1 -->
<xsl:analyze-string select="." regex="(^"\w+",\s)(\d+\.\d+,)">
<xsl:matching-substring>
<xsl:text>"name1",</xsl:text>
<xsl:value-of select="regex-group(2)"/>
</xsl:matching-substring>
</xsl:analyze-string>
<!-- after that: copy all frequencies for name2 etc. -->
</xsl:template>
</xsl:stylesheet>
All in all, I'm trying to reformat a txt file to get the correct format for csv.

Answer 1

You haven't quite explained what you are after but I would think that adding the flags="m" attribute in
<xsl:analyze-string select="." regex="(^"\w+",\s)(\d+\.\d+,)" flags="m">
<xsl:matching-substring>
<xsl:text>"name1",</xsl:text>
<xsl:value-of select="regex-group(2)"/>
</xsl:matching-substring>
</xsl:analyze-string>
is what helps with your complete, multi-line input as that way ^ matches the beginning of each line and not simply of the input string.