working around XLST weirdness when making this template parametric.
diff --git a/releng/build-scripts/build/patch-content-xml.xsl b/releng/build-scripts/build/patch-content-xml.xsl
index 7c7bcd1..5efd50e 100644
--- a/releng/build-scripts/build/patch-content-xml.xsl
+++ b/releng/build-scripts/build/patch-content-xml.xsl
@@ -1,9 +1,19 @@
 <?xml version="1.0"?>
-<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:fn="http://www.w3.org/2004/07/xpath-functions" xmlns:xdt="http://www.w3.org/2004/07/xpath-datatypes" exclude-result-prefixes="xs fn xdt">
-   <xsl:param name="version" />
-   <xsl:param name="versionrange" />
-   <xsl:template match="@range[../@name='org.eclipse.jdt.feature.group' and starts-with(.,concat('[','{$version}'))]">
-     <xsl:attribute name="range"><xsl:value-of select="concat('[','{$version}',',','{$versionnext}',')')" /></xsl:attribute>
+<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:fn=
+"http://www.w3.org/2004/07/xpath-functions" xmlns:xdt="http://www.w3.org/2004/07/xpath-datatypes" exclude-result-prefixes="xs fn xdt
+">
+   <xsl:param name="version"/>
+   <xsl:param name="versionnext" />
+   <xsl:template match="@range[../@name='org.eclipse.jdt.feature.group']">
+    <xsl:choose>
+     <!-- cannot use "concat('[',$version)" inside match predicate, so choose now: -->
+     <xsl:when test="starts-with(.,concat('[',$version))">
+        <xsl:attribute name="range"><xsl:value-of select="concat('[',$version,',',$versionnext,')')" /></xsl:attribute>
+     </xsl:when>
+     <xsl:otherwise>
+        <xsl:attribute name="range"><xsl:value-of select="."/></xsl:attribute>
+     </xsl:otherwise>
+    </xsl:choose>
    </xsl:template>
    <!-- Whenever you match any node or any attribute -->
    <xsl:template match="node()|@*">