src/Pure/System/isabelle_system.ML

--- a/src/Pure/System/isabelle_system.ML	Tue Jun 21 23:05:37 2022 +0200
+++ b/src/Pure/System/isabelle_system.ML	Tue Jun 21 23:27:26 2022 +0200
@@ -24,6 +24,8 @@
   val download_file: string -> Path.T -> unit
   val decode_base64: Bytes.T -> Bytes.T
   val encode_base64: Bytes.T -> Bytes.T
+  val compress: Bytes.T -> Bytes.T
+  val uncompress: Bytes.T -> Bytes.T
   val isabelle_id: unit -> string
   val isabelle_identifier: unit -> string option
   val isabelle_heading: unit -> string
@@ -167,6 +169,12 @@
 val encode_base64 = Scala.function1_bytes "encode_base64";
 
 
+(* XZ compression *)
+
+val compress = Scala.function1_bytes "compress";
+val uncompress = Scala.function1_bytes "uncompress";
+
+
 (* Isabelle distribution identification *)
 
 fun isabelle_id () = Scala.function1 "isabelle_id" "";