Serialization methods on output ports

XProc friends,

Using XProc 3.0 I have a pipeline with an output port that looks like this:

<p:output port="plaintext" pipe="@pretty" serialization="map{'method': 'text' }" />

When the pipeline is run without a binding, my 'pretty' results are echoed to the console.

Running in Morgana XProc III-se, I see a text block. Running in XML Calabash 3 alpha (recent), all the XML tagging comes - tags are not stripped, I see XML.

By analogy with method='text' in XSLT I expected the former - the 'text' method delivers only the string value of the document element, with no tagging (or comments or PIs).

Is this a bug or lapse in XML Calabash, or the 'text method' support optional in XProc 3? Is this a failure on my part to understand what to expect?

Along parallel lines, is there a better way of stripping tagging for final output in XProc than using a serialization method?

My experiments show me it is not hard with p:string-replace, but that also seems a little cumbersome (to me).

Here is my XProc: https://github.com/wendellpiez/oscal-xproc3/blob/wip-2024jan/testing/PROCESSOR-REPORT.xpl

With thanks for any thoughts or relevant info -
Wendell