I want to create an unbounded sequence and wondered if i could do it via a tail recursive function.

a simple example being

<xsl:function name="kooks:repeat" as="xs:integer*">
    <xsl:sequence select="1"/>
    <xsl:sequence select="kooks:repeat()"/>
</xsl:function>

<xsl:template match="/">
    <xsl:sequence select="kooks:repeat()[5]"/>
</xsl:template>

(I’m using Saxon-ee 11.4)

This fails with

Severity: error
Description: class java.lang.StackOverflowError