diff -r 861777e58b77 -r 9dc4d9ed886f src/Pure/General/path.scala
--- a/src/Pure/General/path.scala	Fri Feb 03 19:00:29 2023 +0100
+++ b/src/Pure/General/path.scala	Fri Feb 03 20:23:37 2023 +0100
@@ -239,6 +239,7 @@
   def gz: Path = ext("gz")
   def html: Path = ext("html")
   def jar: Path = ext("jar")
+  def json: Path = ext("json")
   def log: Path = ext("log")
   def orig: Path = ext("orig")
   def patch: Path = ext("patch")