tclxml(n) on macOS
The text 4210e91fcbf4, as Mac OS X 10.4.2, Mac OS X 10.4.1, Mac OS X 10.4 shipped it.
XML parser support for Tcl
Flags it lists
-
-attlistdeclcommand -
-baseurl -
-characterdatacommand -
-commentcommand -
-defaultcommand -
-defaultexpandinternalentities -
-doctypecommand -
-elementdeclcommand -
-elementendcommand -
-elementstartcommand -
-endcdatasectioncommand -
-enddoctypedeclcommand -
-entitydeclcommand -
-entityreferencecommand -
-errorcommand -
-errrocommand -
-externalentitycommand -
-final -
-ignorewhitespace -
-notationdeclcommand -
-notstandalonecommand -
-paramentityparsing -
-parameterentitydeclcommand -
-parser -
-processinginstructioncommand -
-reportempty -
-startcdatasectioncommand -
-startdoctypedeclcommand -
-unknownencodingcommand -
-unparsedentitydeclcommand -
-validate -
-warningcommand -
-xmldeclcommand