diff -r af82097b4adc -r ff716ecb0805 src/Pure/General/path.scala
--- a/src/Pure/General/path.scala	Mon May 10 20:09:47 2021 +0200
+++ b/src/Pure/General/path.scala	Mon May 10 22:18:12 2021 +0200
@@ -213,6 +213,7 @@
     }
 
   def xz: Path = ext("xz")
+  def xml: Path = ext("xml")
   def html: Path = ext("html")
   def tex: Path = ext("tex")
   def pdf: Path = ext("pdf")