I am hitting a namespace bug when loading XInclude files with -i. I am using BaseX 12.3. Consider the following two files: main.xml: <?xml version="1.0"?> <root xmlns:xi="http://www.w3.org/2001/XInclude"> <xi:include href="included.xml"/> </root> included.xml: <?xml version="1.0"?> <item xml:id="test123"/> If I load main.xml with -i, the xml namespace is lost on xml:id attributes: basex -i main.xml '//item/@xml:id' This returns empty. But if I load it using doc(), it works fine: basex 'doc("main.xml")//item/@xml:id' This returns test123. My workaround is to use doc() with an external variable instead of -i. This may be related to issue #2642. Jonathan