Saxon

The problem seem to be with class LoggingWriter, which attempt to bridge the "Writer" interface to the Saxon Logger.

The LoggingWriter is Java code that overrides java.io.Writer. The transpiler simply converts this to a corresponding C# class that overrides System.IO.TextWriter. The problem is, although the Java and C# interfaces are very similar (otherwise this wouldn't be possible), the methods that a subclass has to implement appear to be different in the two cases. It looks like the output is being written to an interface that we haven't implemented, causing it to disappear.

Specifically, The C# TextWriter says:

A derived class must minimally implement the Write(Char) method to make a useful instance of TextWriter.

while Java Writer says

The only methods that a subclass must implement are write(char[], int, int), flush(), and close()

For me, at least on Windows, I don't see any fix:

SaxonCS:

PS C:\Users\marti\SomePath\saxoncs-message-test> & 'C:\Program Files\Saxonica\SaxonCS-11.4\SaxonCS.exe' transform -it -xsl:.\sheet1.xsl
<?xml version="1.0" encoding="UTF-8"?><test>Run with SAXON EE 11.4 </test><!--Run with SAXON EE 11.4 -->

Saxon HE Java:

PS C:\Users\marti\SomePath\saxoncs-message-test> java -jar 'C:\Program Files\Saxonica\SaxonHE11-4J\saxon-he-11.4.jar' -it -xsl:.\sheet1.xsl
Run with SAXON HE 11.4
<?xml version="1.0" encoding="UTF-8"?><test>Run with SAXON HE 11.4 </test><!--Run with SAXON HE 11.4 -->

Code

<?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="/" name="xsl:initial-template">
    <test>Run with {system-property('xsl:product-name')} {system-property('xsl:product-version')} {system-property('Q{http://saxon.sf.net/}platform')}</test>     
    <xsl:comment>Run with {system-property('xsl:product-name')} {system-property('xsl:product-version')} {system-property('Q{http://saxon.sf.net/}platform')}</xsl:comment>
    <xsl:message>Run with {system-property('xsl:product-name')} {system-property('xsl:product-version')} {system-property('Q{http://saxon.sf.net/}platform')}</xsl:message>
  </xsl:template>
  
</xsl:stylesheet>