fn:message

Outputs trace information and discards the result.

message($input as item()*, $label as xs:string?:=()) ➔ empty-sequence()

Arguments
	$input	item()*		The value to be traced
	$label	xs:string?	:= ()	Label to be included in the trace output
Result		empty-sequence()

Namespace

http://www.w3.org/2005/xpath-functions

Links to W3C specifications

XPath 4.0 Functions and Operators

Saxon availability

Available in XPath 4.0, XSLT 4.0, and XQuery 4.0, provided that 4.0 features are enabled (see Enabling 4.0 features). Requires Saxon-PE or Saxon-EE. Implemented since Saxon 13. Available for all platforms.